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White rectangular projector with ultra-short throw lens on front face

OPTOMA

OPTOMA GT4000UHD 4K UHD ultra-short throw home theater projector

SKU CH-FJNG-PRNQE MPN GT4000UHD

Projects a 100-to-150-inch 4K UHD image from 10.53 to 21.43 inches away with 4,000 lumens and a 30,000-hour laser

  • Cabinet ColorWhite
  • TypeDLP
  • LampLight source type DuraCore Laser LASER life 30,000 hours
  • Aspect RatioAspect ratio - compatible 4:3,16:9
  • Display Size100" ~ 150" diagonal
  • Native Resolution3840 x 2160
  • Projects a 100-inch screen from just 12 inches away
  • 4,000 lumens brightness delivers clear images in lit rooms
  • 3840 x 2160 native resolution shows every 4K detail
  • 30,000-hour laser light source removes lamp replacements
  • 15-watt built-in speaker provides sound without extra hardware

Ultra-short throw 4K laser projector

The Optoma GT4000UHD is a DLP home-cinema projector that uses a DuraCore laser light source rated for 30,000 hours. It produces a native 3840 x 2160 image with 4,000 lumens brightness and a 700,000:1 contrast ratio. The ultra-short throw lens creates a 100 to 150 inch diagonal picture from just 10.53 to 21.43 inches away, making it suitable for rooms where a traditional throw distance is impossible.

Installation and common issues

Place the projector on a low surface directly in front of the screen or wall; the 0.25:1 throw ratio means only centimetres of depth are needed. Connect sources via HDMI, HDBaseT 4K, or the RJ45 network port, and use the 3.5 mm audio output for external speakers if the built-in 15 W unit is insufficient. Ensure the operating temperature stays between 0 and 40 °C and humidity below 80 % to avoid thermal shutdown or condensation on the optics.

4K UHD native resolution

The single specification that decides fit is the native 3840 x 2160 resolution combined with the ultra-short 0.25:1 throw ratio. Buyers who need a standard-throw lens for rear-projection or ceiling-mount distances beyond 21 inches cannot use this model. Buyers who require a higher brightness level for very large screens in daylight should also look elsewhere.

Highlights

  • Projects a 100-inch screen from just 12 inches away
  • 4,000 lumens brightness delivers clear images in lit rooms
  • 3840 x 2160 native resolution shows every 4K detail
  • 30,000-hour laser light source removes lamp replacements
  • 15-watt built-in speaker provides sound without extra hardware

Specifications

BrandOptoma Technology
ModelGT4000UHD
Part NumberGT4000UHD
Cabinet ColorWhite
TypeDLP
LampLight source type
DuraCore Laser
LASER life
30,000 hours
Aspect RatioAspect ratio - compatible
4:3,16:9
Display Size100" ~ 150" diagonal
Native Resolution3840 x 2160
Brightness< 1000 lumens
Contrast Ratio700,000:1
Throw Distance10.53" - 21.43"
Throw Ratio0.25:1
Input Video ConnectorsHDMI
Network ConnectorsRJ45
Other Connectorspower Audio 3.5mm
3D sync
HDBaseT 4K
RJ45
RS232
USBUSB service shared with USB-A
Built-in Speakers1 x 15W
Temperature Range0°C~40°C/32°F~104°F
Humidity Rangemax. humidity operating 80%, non-operating 90%
Dimensions3.35" x 12.87" x 12.91"
Weight9.92 lbs
Package ContentsProjector, QSG, Power Adapter and Cable, Remote, Batteries (2xAAA)
Shipping weight22.66 kg
Package size483 × 434 × 201 mm

Questions about this item

How do I confirm the GT4000UHD is displaying a true 3840 x 2160 picture after installation?

Open the on-screen information menu; it will read 3840 x 2160 when a 4K UHD source is active.

Which cables or accessories must I purchase separately to connect a Blu-ray player and a soundbar to the GT4000UHD?

The box includes a power cord and remote; you need to supply an HDMI cable for the player and a 3.5 mm audio cable or HDBaseT link for the soundbar.

Should I choose the 100-inch or 150-inch screen size for a throw distance of 10.53 inches?

At 10.53 inches the projector fills a 100-inch diagonal; moving back to 21.43 inches expands the image to 150 inches.

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