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138 iNCH TV Projector Viewing Distance and Screen Dimensions
For 138″ diagonal projection, a viewing distance (from screen surface to eyes) range of 13.8′ (or 166″) to 20.7′ (or 248″) is recommended for the best viewing experience. If your regular viewing distance will be more than that, you should consider a larger ALR (Ambient Light Rejecting) projection screen and an ultra short throw laser TV projector.
Viewable rectangular screen dimensions for an exactly 138″ diagonal projection screen are 120.3″ wide by 67.6″ high. Actual screen width and height may vary by tenths of an iNCH either more or less, as screen size classes are rounded to the nearest whole iNCH. Bezel adds a bit more to overall screen size.
This 138 iNCH TV solution recommends a pairing of the new Hisense L9Q TriChroma RGB ultra short throw laser TV projector with a 138″ diagonal fixed-frame wall-mount ALR projection screen which requires assembly. The projector and screen are sold separately.
Hisense L9Q 4K UST Laser TV Projector
The Hisense L9Q 4K triple laser ultra short throw projector [Hisense link] [at Amazon] is referred to as Laser TV because it features an ATSC DTV tuner and an RF input for connecting an optional antenna to receive free over-the-air local TV stations. It also features Google’s smart TV platform.
With unmatched 5000 ANSI lumen brightness and a 5000:1 contrast ratio, the powerful and versatile Pantone Validated, 3D-ready Hisense L9Q can project an image of 80″ to 200″ diagonal depending on how far it sits from a projection screen surface, with amazing color accuracy and contrast.
Connectivity includes 4 HDMI inputs (two are 2.1), eARC, 2 USB, 1 USB type C, Ethernet, optical digital and analog audio output, WiFi, Bluetooth. ALLM (Auto Low Latency Mode), Game Mode, and Turbo Mode for gaming with input lag as low as 12ms. 6.2.2 audio with opera-grade sound by Devialet. L9Q measures 24.6″ wide, 6.5″ high, 12.5″ deep, and weighs 28.4 pounds.
Projector and Screen Placement for 138″ Image According to the “Image size and projection distance” chart on page 9 of the Quick Start Guide PDF and some interpolation, the back side of the L9Q projector should be located about 11.3″ away horizontally from the projection screen surface, with the bottom of the projected image about 18.1″ vertically above the bottom of the projector.
Shop for 138 iNCH Projector Screen
The Elite Screens Aeon CLR 5 Series AR138H-CLR5 138″ wall-mount fixed-frame ALR screen [Elite Screens link] [at Amazon] rejects up to 80% of ceiling ambient light, features a 0.8 gain, and has a 170° viewing angle.
Page last updated 08/18/2025.
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