Optoma UHD35STx
| Brand | Optoma · UHD |
| Type | Gaming |
| Resolution | 3840 × 2160 |
| HDR formats | HDR10, HLG |
| Imaging technology | DLP |
| Light source type | Lamp |
| Claimed brightness (non-standard) | 3,600 |
| Throw ratio | 0.5:1 |
| Input lag (rated) | 3840×2160 @ 60 Hz: 16.9 ms · 1920×1080 @ 240 Hz: 4.2 ms |
A lamp-based 4K DLP short-throw projector with a 0.5:1 fixed lens and two HDMI 2.0 inputs. Optoma rates it at 3,600 lumens and lists 4.2 ms input lag at 1080p 240 Hz and 16.9 ms at 4K 60 Hz. It has a built-in 10 W speaker and a backlit remote.
Data sheet
Picture
| Imaging technology | DLP | |
| Native aspect ratio | 16:9 | |
| Native resolution | 3840 × 2160 | |
| Dynamic contrast | 1,000,000:1 | |
| ISF certified | Yes | |
| HDR formats | HDR10, HLG | |
| Max refresh rate | 1920×1080: 240 Hz · 3840×2160: 60 Hz | |
| Input lag (rated) | 3840×2160 @ 60 Hz: 16.9 ms · 1920×1080 @ 240 Hz: 4.2 ms | |
| 3D support | Yes | |
| 3D formats | Frame packing |
Optics
| Throw ratio | 0.5:1 | |
| Zoom type | None | |
| Fixed offset | 116% | |
| Focal length | 7.51 mm | |
| Image size range | 36.43–301 in | |
| Vertical keystone | -40–40° | |
| Horizontal keystone | -40–40° | |
| Corner / warp correction | 4pt |
Light source
| Light source type | Lamp | |
| Lamp wattage | 240 W | |
| Light source life | Bright: 4,000 h · Dynamic: 15,000 h · Eco: 10,000 h | |
| Claimed brightness (non-standard) | 3,600 | |
| Claimed brightness unit | Unspecified | |
| Brightness uniformity (centre-to-corner) | 80% |
Audio
Inputs, control & connectivity
| HDMI port count | 2 | |
| HDMI ports (feature-level) | HDMI 1: HDMI 2.0; HDMI 2: HDMI 2.0 | |
| Horizontal scan frequency | 31–135 kHz | |
| Vertical scan frequency | 24–120 Hz | |
| RS-232 | Yes | |
| 12 V trigger | Yes |
Environment & power
| Operating temperature | 5–40°C | |
| Altitude / high-altitude mode | 3,000 m | |
| Rated voltage | 100–240 V | |
| Rated frequency | 50–60 Hz | |
| Power consumption (max) | 320 W | |
| Power consumption by mode | Min: 220 W · Max: 320 W | |
| Standby power | 0.5 W | |
| Fan noise (sound pressure) | Min: 24 dB(A) · Max: 28 dB(A) |
In the box
| Remote type | Backlit |
Tools
- Throw calculator — How far from the screen the UHD35STx needs to sit for a given image size, set to its 0.5:1 lens.
- Download spec as CSV — Every value on this data sheet with its unit and source, one row per spec.
- Download spec as JSON — The same data from the open data API, with variants and identifiers.
Variants & identifiers
Use these to confirm a listing is this exact model. Any of them works at /p/{code}.
| Variant | Region | Type | Code |
|---|---|---|---|
| White, US | 🇺🇸 US | UPC | 796435814533 |
| EAN | 5055387666443 |
Compare with
Same category, nearest on standardised brightness.
Sources
- Optoma USA UHD35STx product page (Specification section) Manufacturer spec page
- Optoma UHD35STx datasheet (English, US) Spec sheet (PDF)
Editor's notes. Optoma USA page and US datasheet PDF read 2026-10-24 (the PDF text is identical to the page spec table; its footer is dated 2024). Optoma publishes no manufacturer part number on either document, so the variant carries only the UPC and EAN printed on the datasheet ("UPC: 796435814533 , EAN: 5055387666443"). Brightness is "3,600 lumens" with no standard named, so it is stored as claimed_lumens/unspecified. The page lists "Input lag 4.00ms" with no signal, while the marketing line gives 4.2 ms at 1080p/240 Hz and 16.9 ms at 4K/60 Hz; the per-signal figures are used. ALLM/VRR are not mentioned. Optoma gives no warranty terms on the page, no MSRP, and no release date. Dimensions and weight are converted from the imperial figures. The chip size and pixel-shift method are not stated on the pages read. No reviews or videos were opened.
Spotted an error? Every value is checked against the source above it. How we build data sheets.