How do I encode throw ratio for projector schema?

Throw ratio (TR) is the ratio of throw distance to image width: TR = throw distance / image width. Encode as a numeric additionalProperty. For a 1.5:1 throw ratio projector: at 3 meters (throw distance), the image is 2 meters wide (approximately 87 inches diagonal at 16:9 aspect ratio). Classification: Standard throw: TR ≥ 1.4 (must be positioned several feet from the screen). Short throw: 0.4 ≤ TR < 1.4 (can project large image from 1–3 feet away). Ultra-short-throw (UST): TR < 0.4 (can sit touching or inches from the wall/screen). Encode: { '@type': 'PropertyValue', 'name': 'Throw Ratio', 'value': '0.25', 'description': 'Ultra-short-throw projector: throw ratio 0.25 (= throw distance / image width). To project a 120-inch diagonal 16:9 image (2.66m wide), the projector must be positioned only 0.66 meters (26 inches) from the screen surface. UST projectors are designed for use with Ambient Light Rejecting (ALR) screens that reject side-incident ambient light — standard gain screens will wash out in typical room lighting at UST angles.' }. Include throw distance calculation for the maximum supported screen size in the description.

What is the difference between ANSI lumens, LED lumens, and peak lumens for projectors?

These three brightness specifications are NOT comparable and their differences represent the largest source of misrepresentation in the projector category. ANSI lumens (ISO 21118): measured as an average of 9 points across the projected image at a standardized color temperature, uniformity, and on-mode brightness. This is the only internationally standardized, independently verifiable brightness specification. LED lumens: brightness claimed by LED manufacturers for the light source component — not the actual output at the screen after losses through optics, LCD/DLP chip, color filters, and thermal management. Typically 3–5× inflated vs ANSI lumens at the same projector. Peak lumens: maximum single-point or boosted-mode output — not sustained brightness, often 2–3× ANSI lumens claimed. 'Equivalent lumens': a marketing term with no standard definition. A '10,000 lumen' budget projector typically delivers 200–400 ANSI lumens. Encode: { '@type': 'PropertyValue', 'name': 'ANSI Lumens', 'value': '2200', 'description': 'ANSI lumens: 2,200 lm (ISO 21118 test method — 9-point grid average at full white, calibrated color temperature). This is the standardized brightness figure. Manufacturer also claims 20,000 LED lumens (a light source component specification, not ANSI output — not comparable). At 2,200 ANSI lumens: suitable for rooms with controlled lighting for 100-inch screens; large rooms require blackout curtains for full image quality.' }.

How do I encode contrast ratio — native vs full-on/full-off?

Contrast ratio has at least three different measurement methods that produce numbers differing by 100–10,000× from each other: (1) Native contrast (on/off ratio within a single frame): the ratio of the projector's actual peak white brightness to its actual black floor brightness when projecting the same frame. A 500:1 native contrast ratio means black is 1/500th the brightness of peak white. Laser projectors achieve 2,000–10,000:1 native; lamp projectors typically 2,000–5,000:1. (2) Full-on/full-off (FOFO): compares a 100% white frame (projector fully on) against a 100% black frame (projector essentially off). With a dynamic iris that closes on the black frame, FOFO ratios reach 1,000,000:1 or more — but this tells you nothing about contrast within a single frame (a scene with highlights and shadows). (3) ANSI contrast (checkerboard pattern): 8 alternating black and white squares in the same projected frame — typically 200:1 to 1,000:1 even for projectors claiming 1,000,000:1 FOFO. Encode: { '@type': 'PropertyValue', 'name': 'Native Contrast Ratio', 'value': '4000:1', 'description': 'Native (single-frame) contrast ratio: 4,000:1. Measured by projecting the same frame with no iris adjustment — this is the contrast visible in actual movie content (bright highlights vs dark shadows simultaneously on screen). Manufacturer also claims 2,000,000:1 dynamic contrast (full-on/full-off with dynamic iris — this figure reflects the iris closing on a fully black frame, not simultaneous highlight/shadow contrast).' }.

How do I encode light source type and life hours for projectors?

Encode light source type and rated life hours as separate properties, and note that life hours depend on brightness mode. Light source types: UHP Lamp: replaceable high-pressure mercury arc lamp; replacement cost $50–$200 every 3,000–5,000 hours; high brightness ceiling; warm-up and cool-down required; loud cooling fan. LED: typically 20,000–30,000 hours rated life; low power; brightness ceiling approximately 2,000–3,000 ANSI lumens; cool-running; instant on/off. Laser (single phosphor): 20,000+ hours; higher brightness than LED (up to 10,000 ANSI lumens); instant on; excellent color stability over life. Laser (triple RGB): highest brightness and color accuracy; no phosphor wheel; 20,000+ hours; highest cost. Encode: { '@type': 'PropertyValue', 'name': 'Light Source', 'value': 'Triple-Laser (RGB)', 'description': 'Light source: three independent laser arrays (red, green, blue) — no phosphor conversion wheel. Rated life: 20,000 hours at full brightness; 30,000 hours at Eco mode. No lamp replacement required. Wide color gamut: DCI-P3 coverage 97%, BT.2020 approximately 78%. Instant on/off (no warm-up or cool-down). Fan noise: 25 dB(A) at Eco mode, 32 dB(A) at full brightness.' }.

What is the difference between native 4K and pixel-shifted 4K for projector schema?

Native 4K projectors have image chips with 3840×2160 (UHD) or 4096×2160 (cinema) pixel count — every pixel is individually addressable. Pixel-shifted 4K projects a lower-resolution image chip (typically 2716×1528 on JVC's 0.69-inch e-shift chip, or 1920×1080 on BenQ/Optoma DLP chips) and rapidly shifts it by 0.5 pixels diagonally to produce a 4K-density image. The result passes 4K standards (and often resolves fine detail accurately on test charts), but the actual chip resolution is lower. Encode: { '@type': 'PropertyValue', 'name': 'Native Resolution', 'value': '3840×2160 (Native 4K UHD)', 'description': 'Native UHD 4K resolution: 3840×2160 pixels on the imaging chip — each of the 8,294,400 pixels is individually driven. No pixel shifting, wobulation, or XPR technology used. Distinguished from 4K-capable projectors using 1920×1080 or 2716×1528 chips with 0.5-pixel diagonal shift to create 4K-density images (also marketed as 4K). Native 4K chips: Sony LCOS (SXRD), JVC D-ILA (native 4K), DLP 0.67-inch 4K chip (TI). This projector uses the TI DLP 0.67-inch 4K chip.' }.

Optimization Guide

Shopify Projector Schema — Throw Ratio, ANSI Lumens vs LED Lumens vs Peak Lumens, Native vs FOFO Contrast, Light Source Life, Native 4K vs Pixel-Shift, Lens Shift, Structured Data

Q: What is the difference between ANSI lumens, LED lumens, and peak lumens for projectors?

These three brightness specifications are NOT comparable and their differences represent the largest source of misrepresentation in the projector category. ANSI lumens (ISO 21118): measured as an average of 9 points across the projected image at a standardized color temperature, uniformity, and on-mode brightness. This is the only internationally standardized, independently verifiable brightness specification. LED lumens: brightness claimed by LED manufacturers for the light source component — not the actual output at the screen after losses through optics, LCD/DLP chip, color filters, and thermal management. Typically 3–5× inflated vs ANSI lumens at the same projector. Peak lumens: maximum single-point or boosted-mode output — not sustained brightness, often 2–3× ANSI lumens claimed. 'Equivalent lumens': a marketing term with no standard definition. A '10,000 lumen' budget projector typically delivers 200–400 ANSI lumens. Encode: { '@type': 'PropertyValue', 'name': 'ANSI Lumens', 'value': '2200', 'description': 'ANSI lumens: 2,200 lm (ISO 21118 test method — 9-point grid average at full white, calibrated color temperature). This is the standardized brightness figure. Manufacturer also claims 20,000 LED lumens (a light source component specification, not ANSI output — not comparable). At 2,200 ANSI lumens: suitable for rooms with controlled lighting for 100-inch screens; large rooms require blackout curtains for full image quality.' }.

Q: How do I encode contrast ratio — native vs full-on/full-off?

Contrast ratio has at least three different measurement methods that produce numbers differing by 100–10,000× from each other: (1) Native contrast (on/off ratio within a single frame): the ratio of the projector's actual peak white brightness to its actual black floor brightness when projecting the same frame. A 500:1 native contrast ratio means black is 1/500th the brightness of peak white. Laser projectors achieve 2,000–10,000:1 native; lamp projectors typically 2,000–5,000:1. (2) Full-on/full-off (FOFO): compares a 100% white frame (projector fully on) against a 100% black frame (projector essentially off). With a dynamic iris that closes on the black frame, FOFO ratios reach 1,000,000:1 or more — but this tells you nothing about contrast within a single frame (a scene with highlights and shadows). (3) ANSI contrast (checkerboard pattern): 8 alternating black and white squares in the same projected frame — typically 200:1 to 1,000:1 even for projectors claiming 1,000,000:1 FOFO. Encode: { '@type': 'PropertyValue', 'name': 'Native Contrast Ratio', 'value': '4000:1', 'description': 'Native (single-frame) contrast ratio: 4,000:1. Measured by projecting the same frame with no iris adjustment — this is the contrast visible in actual movie content (bright highlights vs dark shadows simultaneously on screen). Manufacturer also claims 2,000,000:1 dynamic contrast (full-on/full-off with dynamic iris — this figure reflects the iris closing on a fully black frame, not simultaneous highlight/shadow contrast).' }.

Q: How do I encode light source type and life hours for projectors?

Encode light source type and rated life hours as separate properties, and note that life hours depend on brightness mode. Light source types: UHP Lamp: replaceable high-pressure mercury arc lamp; replacement cost $50–$200 every 3,000–5,000 hours; high brightness ceiling; warm-up and cool-down required; loud cooling fan. LED: typically 20,000–30,000 hours rated life; low power; brightness ceiling approximately 2,000–3,000 ANSI lumens; cool-running; instant on/off. Laser (single phosphor): 20,000+ hours; higher brightness than LED (up to 10,000 ANSI lumens); instant on; excellent color stability over life. Laser (triple RGB): highest brightness and color accuracy; no phosphor wheel; 20,000+ hours; highest cost. Encode: { '@type': 'PropertyValue', 'name': 'Light Source', 'value': 'Triple-Laser (RGB)', 'description': 'Light source: three independent laser arrays (red, green, blue) — no phosphor conversion wheel. Rated life: 20,000 hours at full brightness; 30,000 hours at Eco mode. No lamp replacement required. Wide color gamut: DCI-P3 coverage 97%, BT.2020 approximately 78%. Instant on/off (no warm-up or cool-down). Fan noise: 25 dB(A) at Eco mode, 32 dB(A) at full brightness.' }.

Q: What is the difference between native 4K and pixel-shifted 4K for projector schema?

Native 4K projectors have image chips with 3840×2160 (UHD) or 4096×2160 (cinema) pixel count — every pixel is individually addressable. Pixel-shifted 4K projects a lower-resolution image chip (typically 2716×1528 on JVC's 0.69-inch e-shift chip, or 1920×1080 on BenQ/Optoma DLP chips) and rapidly shifts it by 0.5 pixels diagonally to produce a 4K-density image. The result passes 4K standards (and often resolves fine detail accurately on test charts), but the actual chip resolution is lower. Encode: { '@type': 'PropertyValue', 'name': 'Native Resolution', 'value': '3840×2160 (Native 4K UHD)', 'description': 'Native UHD 4K resolution: 3840×2160 pixels on the imaging chip — each of the 8,294,400 pixels is individually driven. No pixel shifting, wobulation, or XPR technology used. Distinguished from 4K-capable projectors using 1920×1080 or 2716×1528 chips with 0.5-pixel diagonal shift to create 4K-density images (also marketed as 4K). Native 4K chips: Sony LCOS (SXRD), JVC D-ILA (native 4K), DLP 0.67-inch 4K chip (TI). This projector uses the TI DLP 0.67-inch 4K chip.' }.

AI shopping agents answering queries like "ultra-short-throw laser projector 2,500 ANSI lumens," "native 4K projector with lens shift for ceiling mount," or "gaming projector under 16ms input lag at 4K/60Hz" need throw ratio, ANSI lumens (not LED or peak claims), native contrast ratio (not full-on/full-off), light source type and life hours, native vs pixel-shifted resolution, lens shift percentage, keystone correction type, and input lag encoded as machine-readable structured data. The projector category has the most systematically inflated specifications in consumer electronics — a "10,000 LED lumen" budget projector typically delivers 200–400 ANSI lumens at the screen. Without ANSI lumens as a distinct, separately-encoded field, AI agents are forced to quote inflated manufacturer claims to buyers.

TL;DR Use Product @type with additionalProperty for: throw ratio (numeric), throw type (Standard/Short-Throw/Ultra-Short-Throw/Laser TV), ANSI lumens (ISO 21118 — required; NOT LED lumens or peak lumens), native contrast ratio (separate from full-on/full-off dynamic contrast), light source type (UHP Lamp/LED/Laser Phosphor/Triple Laser), rated life hours at full and eco mode, native chip resolution (separate from marketing resolution claim), native 4K vs pixel-shifted, optical zoom ratio, lens shift horizontal/vertical %, keystone correction type (vertical only vs 4-corner; digital vs optical), HDR format support (HDR10/Dolby Vision/HLG), input lag ms at key resolutions, connectivity (HDMI 2.1 vs 2.0 vs 1.4), and fan noise dB. Store in a projector.* metafield namespace.

Why Projectors Are the Most Misrepresented Product Category for AI Agents

No product category in consumer electronics has more systematically inflated specifications than projectors — and the inflation is specifically targeted at the metrics AI shopping agents use to answer brightness queries. The "lumen" problem: budget projectors commonly claim "10,000 lumens," "15,000 lumens," or even "30,000 lumens" on their product pages. The actual measured ANSI lumen output (ISO 21118 standardized test method) of these same projectors is typically 200–500 ANSI lumens. The claimed figures are "LED lumens" — a light source component rating from the LED chip manufacturer that does not account for optical losses through the lens, the LCD/DLP chip, polarizing filters, color wheels, thermal management, or any of the other elements that reduce actual screen output. The ratio between LED lumens claimed and ANSI lumens measured is typically 3–8×, sometimes 20–30× on the most egregiously marketed products.

An AI shopping agent that reads a product description containing "10,000 lumens" without an explicit ANSI lumen property will quote that figure to a buyer. The buyer will set up the projector in a room expecting the brightness of a professional cinema projector (which might actually deliver 10,000 ANSI lumens) and receive a dark, washed-out image. The only remedy is encoding ANSI lumens as a separate, explicitly labeled property — and describing the measurement standard in the property description so AI agents surface it correctly to buyers.

Contrast ratio misrepresentation is equally systematic. "2,000,000:1 dynamic contrast ratio" on a budget projector refers to full-on/full-off contrast — the comparison between a frame of pure white (projector fully on) and a frame of pure black (projector essentially off, dynamic iris closed). This is a useless metric for movie watching, where highlights and shadows appear simultaneously in the same frame. The relevant metric is native (single-frame) contrast: typically 500:1 to 5,000:1 for good projectors. A projector claiming 2,000,000:1 dynamic contrast with 300:1 native contrast is inferior in actual shadow detail to a projector claiming 10,000:1 dynamic with 3,000:1 native. Without native contrast encoded as a separate property, AI agents cannot recommend projectors accurately for home theater buyers who specifically need deep blacks.

Brightness Specification Comparison

Specification type	Standard	Inflation vs ANSI	When to use
ANSI Lumens	ISO 21118 (international standard)	1× (the baseline — honest)	Always; the only comparable brightness metric
LED Lumens	LED chip manufacturer's own spec	3–8× typical; up to 30× worst case	Never for projector output comparison
Peak Lumens / Maximum Brightness	No standard	1.5–3× ANSI typical	Never as primary brightness spec
"Equivalent Lumens" / "Lux Lumens"	No standard — pure marketing	Variable, undefined	Never — refuse to encode this as brightness
Color Lumens	IEC 62906-5-4 (in development)	Similar to ANSI for 3-chip; lower for 1-chip color wheel	Encode separately alongside ANSI white lumens

Throw Ratio Classification

Throw type	Throw ratio	Distance for 100" screen	Typical use	Screen type compatibility
Long Throw	>2.0	4–6+ meters	Large auditoriums; long-throw rooms	Standard gain; any screen
Standard Throw	1.4–2.0	3–4 meters	Living rooms, classrooms, home theater rooms	Standard gain; any screen
Short Throw	0.4–1.4	1–3 meters	Small rooms; near-wall mounting	Standard gain; neutral gain
Ultra-Short-Throw (UST)	<0.4	<1 meter	Under-shelf or TV-stand placement; replaces TV	ALR (Ambient Light Rejecting) screen required for ambient light rejection; standard screen works in dark rooms only
Laser TV	0.15–0.30 typical	10–30 cm	Direct screen replacement; sits against wall	Dedicated ALR Fresnel screen (manufacturer-matched)

Contrast Ratio Comparison

Metric	What is compared	Typical values	Usefulness for movie watching
Native contrast	Peak white vs black floor in same frame	500:1 – 10,000:1	High — reflects shadow detail in actual scenes
ANSI contrast	Alternating 4×4 checkerboard in same frame	100:1 – 500:1	Moderate — affected by inter-pixel scatter
Full-on/full-off (FOFO)	100% white frame vs 100% black frame (no content)	10,000:1 – 5,000,000:1	None — this never occurs during movie content
Dynamic contrast (with iris)	FOFO with dynamic iris closing on dark frames	100,000:1 – 2,000,000:1+	Marginal — iris movement introduces lag and artifacts

Complete Projector Schema — Native 4K Laser Home Theater

<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "Product",
  "name": "BenQ W4000i True 4K DLP Laser Home Theater Projector — 3,200 ANSI Lumens, HDR10+, 1.3× Zoom",
  "description": "Native 4K UHD (3840×2160) DLP projector with single-phosphor blue laser light source. 3,200 ANSI lumens (ISO 21118). Native contrast: 3,000:1. Dynamic (FOFO with iris): 2,000,000:1. Optical zoom: 1.3× (TR 1.13–1.47). Vertical lens shift: ±10%. HDR10, HLG, HDR10+ support. HDMI 2.0 × 2, USB-A × 1. Input lag: 16ms (1080p/60Hz Game Mode); 33ms (4K/60Hz Game Mode). Fan noise: 28 dB(A) eco / 31 dB(A) full. Light source life: 20,000 hours (normal); 30,000 hours (eco). Weight: 4.8 kg. Includes Android TV dongle (QS02) in USB port.",
  "sku": "W4000I",
  "brand": { "@type": "Brand", "name": "BenQ" },
  "additionalProperty": [
    {
      "@type": "PropertyValue",
      "name": "Throw Ratio",
      "value": "1.13–1.47",
      "description": "Throw ratio: 1.13–1.47 (1.3× optical zoom range). Throw ratio = throw distance ÷ image width. For a 120-inch diagonal 16:9 screen (2.66m wide): minimum throw distance = 1.13 × 2.66m = 3.00m; maximum throw distance = 1.47 × 2.66m = 3.91m. Standard throw category — requires 3–4 meters distance for a 120-inch screen. Place the projector 3.0–3.9m from the screen surface for 120-inch image. Not a short-throw or ultra-short-throw projector — requires a dedicated projection room with ceiling-mount or rear-shelf placement."
    },
    {
      "@type": "PropertyValue",
      "name": "Throw Type",
      "value": "Standard Throw",
      "description": "Standard throw projector (TR 1.13–1.47). Requires 3+ meters distance from screen for typical 100–120-inch home theater screens. Suitable for: dedicated home theater rooms, large living rooms with projector mounted on rear ceiling or shelf. Not suitable for: small rooms where projector must be placed close to the screen (use short-throw TR 0.4–1.4) or open-plan living rooms where the projector will be next to the screen (use ultra-short-throw TR <0.4)."
    },
    {
      "@type": "PropertyValue",
      "name": "ANSI Lumens",
      "value": "3200",
      "description": "ANSI lumen output: 3,200 lm (ISO 21118 standard — 9-point grid average measurement at 6,500K color temperature, new light source). This is the internationally standardized, independently verifiable brightness specification. Manufacturer may also list peak brightness at 3,600 lm (single-point maximum) — not comparable. LED lumen claims on budget projectors are completely incomparable: a budget projector claiming '15,000 LED lumens' typically delivers 200–400 ANSI lumens. At 3,200 ANSI lumens: comfortable viewing on 120-inch screen in a darkened room; usable on 100-inch in moderate ambient light (closed blinds but not blackout). Brightness at 20,000 hours (end of rated life): approximately 2,240 lm (70% of initial — standard industry rating at 70% lumen maintenance point)."
    },
    {
      "@type": "PropertyValue",
      "name": "Native Contrast Ratio",
      "value": "3000:1",
      "description": "Native (single-frame) contrast ratio: 3,000:1. Measured by projecting the same content frame — the ratio of the projector's maximum white output to its minimum black floor without any iris adjustment or frame switching. This reflects actual shadow detail visible in movie scenes that contain simultaneous bright highlights and dark shadows. Also encoded separately: dynamic contrast 2,000,000:1 (full-on/full-off with dynamic iris — represents a fully white frame vs a fully black frame; this measurement never corresponds to real movie content and provides no information about simultaneous highlight/shadow contrast)."
    },
    {
      "@type": "PropertyValue",
      "name": "Dynamic Contrast Ratio",
      "value": "2000000:1",
      "description": "Dynamic (full-on/full-off) contrast ratio: 2,000,000:1 with dynamic iris. This figure is measured by comparing a 100% white frame (projector fully on, iris open) against a 100% black frame (iris closed automatically). This measurement does not reflect simultaneous highlight and shadow contrast in actual movie content — it measures the projector's ability to dim for very dark scenes. The native contrast ratio (3,000:1) is the specification relevant for image quality in typical movie scenes. Do not conflate dynamic contrast with native contrast."
    },
    {
      "@type": "PropertyValue",
      "name": "Light Source",
      "value": "Single Phosphor Laser (Blue Laser + Yellow Phosphor Wheel)",
      "description": "Light source: single blue laser diode array with yellow phosphor wheel (also called 'laser-phosphor' or '2-primary laser'). The blue laser excites the phosphor wheel to produce yellow (red + green) light; blue is also output directly. Not triple-laser (no dedicated red or green laser — different from Sony/JVC/BenQ LK500 ALPD laser). Color gamut: approximately 92% DCI-P3 (good for HDR content). No warm-up or cool-down required — instant on/off. No mercury lamp to replace. Fan noise higher than triple-laser (phosphor wheel rotation). Compare with triple-laser (RGB laser): superior color gamut (97%+ DCI-P3), no phosphor wheel noise, similar life hours, significantly higher cost."
    },
    {
      "@type": "PropertyValue",
      "name": "Light Source Life Hours (Normal Mode)",
      "value": "20000",
      "unitCode": "HUR",
      "description": "Rated light source life at Normal (full brightness) mode: 20,000 hours to 70% lumen maintenance (L70 rating — when output drops to 70% of initial ANSI lumens, approximately 2,240 lm). At 3 hours per day viewing: 20,000 hours = approximately 18 years of daily use. Light source does not burn out suddenly — brightness gradually decreases over time. No lamp replacement required or possible (sealed laser module). At Eco mode: rated 30,000 hours L70 (approximately 2,800 lm output)."
    },
    {
      "@type": "PropertyValue",
      "name": "Native Resolution",
      "value": "3840×2160 (Native 4K UHD — DLP 0.47-inch chip)",
      "description": "Native resolution: 3840×2160 UHD 4K on a Texas Instruments DLP 0.47-inch XPR chip. Note: the TI 0.47-inch chip has a physical pixel count of 2716×1528, but uses XPR (eXpanded Pixel Resolution) rapid diagonal pixel shifting at 4× speed to resolve 3840×2160. This is a widely accepted form of 4K DLP — it passes the standard 4K resolution test charts and resolves fine detail that 1080p cannot. It is not 'native 4K' in the same sense as Sony SXRD or JVC D-ILA chips (which have physical 4096×2160 pixel arrays). Disclosed here explicitly: chip = 0.47-inch TI DLP XPR; physical pixels = 2716×1528; pixel shift = 0.5 pixel diagonal × 4 positions = 3840×2160 addressable resolution."
    },
    {
      "@type": "PropertyValue",
      "name": "Optical Zoom",
      "value": "1.3×",
      "description": "Optical zoom ratio: 1.3× (power zoom, motorized). Allows the image size to change from 100% to 130% of minimum size without moving the projector. This accommodates: minor room layout adjustments (furniture rearrangement); exact screen fill without physical repositioning; lens memory storage of multiple zoom and lens shift positions for different screen sizes (2 presets stored). Electric zoom controlled via remote or menu — no manual lens ring rotation required."
    },
    {
      "@type": "PropertyValue",
      "name": "Vertical Lens Shift",
      "value": "±10%",
      "description": "Vertical lens shift: ±10% of image height (power shift, motorized). Allows the projected image to move up or down by 10% of the image height without tilting the projector. For a 120-inch image (67.5 inches tall): ±10% = ±6.75 inches of vertical adjustment without moving the projector. This enables ceiling-mount placement above the screen center without keystone correction (preserving image geometry). No horizontal lens shift on this model — horizontal centering requires physical projector repositioning. Compare: high-end projectors (Sony VPL-XW7000) offer ±85% vertical + ±25% horizontal lens shift for maximum placement flexibility."
    },
    {
      "@type": "PropertyValue",
      "name": "Keystone Correction",
      "value": "Vertical ±30° (Digital) + 4-Corner",
      "description": "Keystone correction: ±30° digital vertical keystone + 4-corner digital geometric correction. Digital keystone correction degrades image quality by resampling pixels — a 30° vertical keystone requires approximately 15% pixel interpolation loss. Recommendation: use lens shift (optical, no quality loss) for vertical offset correction before using digital keystone. Digital 4-corner correction compensates for non-perpendicular projection onto non-flat or angled walls. Auto-keystone (accelerometer-based): available but less accurate than manual — use manual keystone for permanent installation."
    },
    {
      "@type": "PropertyValue",
      "name": "HDR Support",
      "value": "HDR10, HDR10+, HLG",
      "description": "HDR formats: HDR10 (static metadata, 10-bit, BT.2020 color space — the baseline HDR standard for 4K Blu-ray and streaming), HDR10+ (dynamic metadata — adjusts tone mapping scene-by-scene; used by Amazon Prime, Samsung+), HLG (Hybrid Log-Gamma — HDR broadcast standard; BBC/NHK; used by some live sports broadcasts). Dolby Vision: not supported (Dolby requires licensed hardware decoder; most consumer projectors except select Epson/BenQ models do not support it). HDR implementation note: this projector's peak brightness (3,200 ANSI lm = approximately 80–100 nit screen brightness on 120-inch screen) falls significantly below the HDR10 spec of 1,000 nits — HDR content is tone-mapped to the projector's brightness capability, which reduces specular highlight impact vs a 1,000-nit HDR display."
    },
    {
      "@type": "PropertyValue",
      "name": "Input Lag (Game Mode)",
      "value": "16ms at 1080p/60Hz; 33ms at 4K/60Hz",
      "description": "Input lag in Game Mode (minimum processing, no frame interpolation): 16ms at 1080p/60Hz; 33ms at 4K/60Hz (measured with Leo Bodnar 4K lag tester). HDMI 2.0 input limits 4K input to 60Hz maximum (no HDMI 2.1 — therefore no 4K/120Hz input). At 33ms (4K/60Hz), lag is below the 50ms threshold commonly cited as the perceptible limit for most console game genres (excluding competitive FPS). For competitive gaming at 4K/120Hz, a monitor is required — this projector's HDMI 2.0 cannot accept 4K/120Hz input. In Standard (home theater) mode: input lag increases to approximately 90ms — not suitable for gaming."
    },
    {
      "@type": "PropertyValue",
      "name": "Connectivity",
      "value": "HDMI 2.0 × 2, USB-A × 1, 3.5mm audio out, RS-232",
      "description": "HDMI inputs: 2× HDMI 2.0 (4K/60Hz @ 4:2:0 10-bit; no HDMI 2.1 — maximum bandwidth 18 Gbps). HDMI 2.0 limitations vs 2.1: no 4K/120Hz, no 8K, no VRR (Variable Refresh Rate — G-Sync or FreeSync), no eARC. For Xbox Series X or PS5 at 4K/60Hz: HDMI 2.0 is sufficient. For 4K/120Hz gaming: requires HDMI 2.1 projector (Epson LS11000, BenQ LK720, JMGO N1 Ultra). USB-A port: powers the included QS02 Android TV dongle (Netflix, Disney+, YouTube via the USB port dongle). No built-in Android TV in the projector body — dongle required."
    },
    {
      "@type": "PropertyValue",
      "name": "Fan Noise",
      "value": "28 dB(A) eco / 31 dB(A) normal",
      "description": "Fan noise: 28 dB(A) in Eco mode; 31 dB(A) in Normal (full brightness) mode (IEC 60704-1 test method, measured at 1 meter). At 31 dB(A) normal: audible in a quiet room during silent movie scenes — slight constant hiss. For critical listening with home theater audio, use Eco mode (28 dB(A)) or pair with acoustic treatment. Compare: home theater projectors from Epson (EB-LS12000B): 20 dB(A) eco — near-silent. Budget DLP projectors: often 38–45 dB(A) normal — distracting. 31 dB(A) is acceptable for most home theater use with surround sound."
    }
  ],
  "offers": {
    "@type": "Offer",
    "price": "1799.00",
    "priceCurrency": "USD",
    "availability": "https://schema.org/InStock"
  }
}
</script>

Metafield Reference Table — Projectors

Metafield key	Type	Example value	Notes
`projector.throw_ratio_min`	number_decimal	1.13	Minimum throw ratio (zoomed in)
`projector.throw_ratio_max`	number_decimal	1.47	Maximum throw ratio (zoomed out); equal to min if no zoom
`projector.throw_type`	single_line_text	Standard Throw	Values: Long Throw, Standard Throw, Short Throw, Ultra-Short-Throw, Laser TV
`projector.ansi_lumens`	number_integer	3200	ANSI lumens per ISO 21118 — NOT LED lumens or peak lumens
`projector.native_contrast`	single_line_text	3000:1	Native (single-frame) contrast — NOT full-on/full-off
`projector.fofo_contrast`	single_line_text	2000000:1	Full-on/full-off dynamic contrast (disclose separately)
`projector.light_source`	single_line_text	Laser Phosphor	Values: UHP Lamp, LED, Laser Phosphor, Triple Laser (RGB)
`projector.light_life_hours_normal`	number_integer	20000	Rated life at full brightness (L70 — 70% lumen maintenance)
`projector.light_life_hours_eco`	number_integer	30000	Rated life at eco/low-power mode (L70)
`projector.native_chip_resolution`	single_line_text	3840×2160 (DLP 0.47" XPR)	Physical chip resolution + pixel shift technology disclosure
`projector.native_4k`	boolean	false	True = physical chip pixels = 3840×2160 or 4096×2160; False = pixel shifted
`projector.optical_zoom`	number_decimal	1.3	Optical zoom ratio (1.0 = fixed, no zoom)
`projector.lens_shift_vertical_pct`	number_decimal	10.0	Vertical lens shift range (% of image height, each direction)
`projector.lens_shift_horizontal_pct`	number_decimal	0.0	Horizontal lens shift range (% of image width); 0 = none
`projector.keystone_type`	single_line_text	Vertical Digital + 4-Corner	Values: None, Vertical Digital, V+H Digital, 4-Corner, Optical (superior)
`projector.hdr_formats`	single_line_text	HDR10, HDR10+, HLG	Comma-separated list; Dolby Vision separately
`projector.dolby_vision`	boolean	false	Dolby Vision support (licensed hardware decoder required)
`projector.input_lag_ms_1080p60`	number_integer	16	Game mode input lag at 1080p/60Hz (ms)
`projector.input_lag_ms_4k60`	number_integer	33	Game mode input lag at 4K/60Hz (ms)
`projector.hdmi_version`	single_line_text	HDMI 2.0	Highest HDMI version on any input; Values: HDMI 1.4, HDMI 2.0, HDMI 2.1
`projector.fan_noise_db_normal`	number_integer	31	Fan noise at full brightness in dB(A)
`projector.fan_noise_db_eco`	number_integer	28	Fan noise at eco mode in dB(A)
`projector.weight_kg`	number_decimal	4.8	Projector weight without accessories (kg)

Liquid Snippet — projector Metafields to JSON-LD

{% assign pj = product.metafields.projector %}
{% if pj.ansi_lumens != blank %}
<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "Product",
  "name": {{ product.title | json }},
  "additionalProperty": [
    { "@type": "PropertyValue", "name": "Throw Ratio", "value": {{ pj.throw_ratio_min | append: '–' | append: pj.throw_ratio_max | json }} },
    { "@type": "PropertyValue", "name": "Throw Type", "value": {{ pj.throw_type | json }} },
    { "@type": "PropertyValue", "name": "ANSI Lumens", "value": {{ pj.ansi_lumens | json }} },
    { "@type": "PropertyValue", "name": "Native Contrast Ratio", "value": {{ pj.native_contrast | json }} },
    { "@type": "PropertyValue", "name": "Light Source", "value": {{ pj.light_source | json }} },
    { "@type": "PropertyValue", "name": "Light Source Life (Normal)", "value": {{ pj.light_life_hours_normal | json }}, "unitCode": "HUR" },
    { "@type": "PropertyValue", "name": "Native Chip Resolution", "value": {{ pj.native_chip_resolution | json }} },
    { "@type": "PropertyValue", "name": "Optical Zoom", "value": {{ pj.optical_zoom | append: '×' | json }} },
    { "@type": "PropertyValue", "name": "Vertical Lens Shift", "value": {{ pj.lens_shift_vertical_pct | json }}, "unitCode": "P1" },
    { "@type": "PropertyValue", "name": "HDR Support", "value": {{ pj.hdr_formats | json }} },
    { "@type": "PropertyValue", "name": "Input Lag (4K/60Hz Game Mode)", "value": {{ pj.input_lag_ms_4k60 | json }} },
    { "@type": "PropertyValue", "name": "HDMI Version", "value": {{ pj.hdmi_version | json }} },
    { "@type": "PropertyValue", "name": "Fan Noise (Normal Mode)", "value": {{ pj.fan_noise_db_normal | json }}, "unitCode": "2A" }
  ]
}
</script>
{% endif %}

Five Common Projector Schema Mistakes

LED lumens or peak lumens without ANSI lumens. This is the defining misrepresentation in the projector category. A projector claiming "10,000 lumens" that delivers 350 ANSI lumens is not providing false advertising in a technical sense — because the claim is for LED chip lumens, not ANSI screen lumens. But AI shopping agents quoting this figure to buyers result in extreme buyer disappointment. Always encode ANSI lumens (ISO 21118) as a separate, explicitly labeled property. Never encode LED lumens or peak lumens as the primary brightness figure.
Dynamic contrast only — native contrast absent. "2,000,000:1 contrast ratio" on a budget projector is a full-on/full-off measurement with a dynamic iris. Native contrast may be 300:1 or 500:1. For buyers comparing projectors for home theater with dark scenes and bright highlights simultaneously, native contrast is the only relevant figure. Encode native contrast and FOFO/dynamic contrast as separate properties with different names — never let them share a field.
"4K" without disclosing pixel shift. "Native 4K" (physical chip = 3840×2160) and "4K DLP" (2716×1528 chip with XPR pixel shift) both appear in product titles as "4K projector." For buyers who understand the distinction, the chip resolution and pixel shift technology must be disclosed. Encode native chip resolution, pixel count, and whether XPR/e-shift technology is used as an explicit property. Buyers who cannot afford Sony SXRD or JVC D-ILA but are choosing between XPR-based DLP options need this information.
Light source life without mode context. "30,000-hour lamp life" means nothing without the brightness mode — life hours at eco mode vs normal mode can differ by 50%. Encode rated life hours at each brightness mode separately (light_life_hours_normal and light_life_hours_eco). Also encode the lumen maintenance standard (L70 = hours to 70% initial brightness, the industry standard; some manufacturers use L50 which inflates the figure significantly).
Input lag without resolution and mode context. "16ms input lag" with no resolution or mode specification is nearly useless for gaming buyers. Input lag differs significantly between 1080p/60Hz and 4K/60Hz (often 2× difference), and between Game Mode and Standard Mode (often 5–6× difference). Encode input lag at each relevant resolution/framerate combination and specify whether measurement is in Game Mode. Also disclose HDMI version — buyers targeting 4K/120Hz gaming need HDMI 2.1.

FAQ

How do I encode throw ratio and throw type for projector schema?

Encode throw ratio as a numeric property (minimum and maximum if the projector has optical zoom), and throw type as a text property (Standard Throw, Short Throw, Ultra-Short-Throw). In the description, include the throw distance calculation for the most common screen size in the category (100-inch or 120-inch diagonal). AI agents answering "ultra-short-throw projector for 100-inch screen" need both the throw ratio (<0.4) and the calculated distance from the screen (typically <0.5 meters for a 100-inch image) to recommend correctly.

How do I encode ANSI lumens separately from LED lumens?

Encode ANSI lumens (ISO 21118) as a separate property with name "ANSI Lumens" and the numeric value. In the description, explicitly state the measurement standard (ISO 21118 — 9-point grid average). If the manufacturer also provides LED lumen claims, encode those separately as "LED Lumens" with a description explaining they are not comparable to ANSI lumens. Never list LED lumens or peak lumens in the same field as ANSI lumens. The property name "ANSI Lumens" is the signal AI agents use to trust the brightness figure — any other lumen type requires the AI agent to caveat its recommendation.

What is the difference between native contrast and full-on/full-off contrast?

Native contrast (single-frame) measures the ratio of peak white to black floor in the same projected image — this reflects shadow detail in actual movie content with simultaneous highlights and shadows. Full-on/full-off (FOFO) contrast compares a 100% white frame against a 100% black frame — values reach 1,000,000:1 or more but provide no information about simultaneous contrast. Encode both separately: Native Contrast Ratio and Dynamic Contrast Ratio (FOFO). Home theater buyers selecting a projector for cinematic content should prioritize native contrast — FOFO contrast is essentially a marketing figure.

How do I disclose pixel-shifted 4K vs native 4K chip?

Encode the native chip resolution explicitly with the chip size and pixel shift technology: "3840×2160 (DLP 0.47-inch XPR)" for pixel-shifted DLP, "4096×2160 (Native SXRD)" for Sony, "4096×2160 (Native D-ILA)" for JVC. Also encode Native 4K as a boolean: true for physical chip pixel count ≥ 3840×2160; false for pixel-shifted designs. Buyers who understand the distinction will filter by this property. Buyers who do not understand it should receive an honest description explaining what XPR/e-shift means for image quality vs true native 4K.

How do I encode input lag for gaming projectors?

Encode input lag as separate properties for each relevant combination: Input Lag at 1080p/60Hz (Game Mode), Input Lag at 4K/60Hz (Game Mode), and if HDMI 2.1 is present, Input Lag at 4K/120Hz (Game Mode). Always specify "Game Mode" since Standard/Movie mode typically has 3–6× higher lag. Also encode the highest HDMI version available — HDMI 2.0 limits 4K to 60Hz; HDMI 2.1 enables 4K/120Hz. AI agents recommending projectors for competitive FPS gaming should be able to compare input lag values directly from structured data.

Does your Shopify store encode ANSI lumens and native contrast in projector structured data?

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