— Projector Throw · Ultra-short-throw laser TV
Epson EH-LS800B throw distance & placement
Problem. An ultra-short-throw laser TV lives or dies on one decision: how close the cabinet can sit beneath the screen without the image clipping or distorting. For the Epson EH-LS800B at a 100-inch 16:9 image, that decision comes down to a throw distance of 0.35-0.35 m, which most living rooms and media walls can accommodate but which still needs to be checked against the specific console or shelf being used.
Answer. For a 100-inch 16:9 screen (2.21 m wide), the Epson EH-LS800B sits at a throw distance of 0.35-0.35 m from the wall. In practice, that means the projector unit and its low cabinet or console occupy only a few centimetres of floor depth, leaving the rest of the room free of any ceiling mount or long throw path.
02 / In depth
How this preset reads — the engineering view.
The EH-LS800B uses an ultra-short-throw (UST) lens with a throw ratio of 0.16-0.16:1, which is why the calculator returns a throw distance of just 0.35-0.35 m for a 100-inch image. Where a standard projector needs several metres of clear space to fill the same screen, this unit is designed to sit directly beneath the display, so placement planning is about console depth and wall clearance rather than room length.
At 4000 lumens with a laser light source, the EH-LS800B is built for rooms with some control over ambient light rather than fully daylight-bright spaces; a laser source also means consistent brightness over time without lamp replacement cycles. Native resolution is 1920x1080, so it suits living-room and media-wall installations where a sharp Full HD image at 100 inches is the goal, rather than large-venue or fully blacked-out theatre use.
From this preset, drag the screen-size slider up or down to see how throw distance scales with image width for this same 0.16:1 ratio — larger screens push the unit slightly further from the wall, smaller screens bring it closer. Because this is a UST design, also check the physical cabinet depth of the console or unit against the calculated throw, and note that UST installations generally benefit from an ambient-light-rejecting (ALR) screen to hold contrast under room lighting.
The calculator resolves throw distance only. It does not account for screen gain or an ALR screen's viewing-angle behaviour, ambient-light rejection performance in a specific room, mounting or console height and its effect on image offset, which exact lens variant is fitted if a body ever ships in more than one configuration, or audio integration. Those decisions still need a site check.
What this preset deliberately does not solve
- The 0.35-0.35 m figure assumes a flat wall and a level cabinet directly below the intended image; real consoles vary in depth and height.
- Image offset and keystone tolerance are not covered by this calculator and should be confirmed against the unit's placement guide.
- Ambient light performance at 4000 lumens depends heavily on the room and screen material, which this tool does not model.
How this preset differs from its siblings
Not every ultra-short-throw laser TV shares this throw ratio: the EH-LS800B's 0.16-0.16:1 ratio and 0.35-0.35 m figure at 100 inches are specific to this model and will not transfer to other UST laser TVs with different lens designs or throw ratios. Its 4000-lumen, Full HD native resolution profile also sits at a different brightness and resolution point than other UST laser projectors in the same broad category, which changes the room and screen-size fit even when two units both claim ultra-short-throw placement.
03 / Hydrated calculator
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