With a 1200 lumen LED light source instead of an incandescent lamp, Optoma's HD91 LED Home Cinema Projector is able to boast a lamp life of over 20,000 hours and a noise level of approximately 23dB. Ready to bring the big screen experience to your living room, it features a native Full HD (1920 x 1080) resolution as well as HDMI 1.4a mandatory 3D compliance for viewing 3D video from Blu-ray players, select computer graphics cards, and more. The included lens gives you a 1.9x zoom with 1.5 to 2.89:1 throw ratio, giving you some wiggle room when adapting the projector to rooms and screens of different sizes. Further augmenting its installation flexibility is vertical and horizontal lens shift, on top of vertical keystone correction.
For digital and 3D connectivity, the projector provides two HDMI inputs. In addition, it includes VGA, component, and composite inputs for any legacy analog equipment. A VESA 3D sync port drives the included (or third-party) IR emitters, and there is a USB port to recharge 3D glasses or power other devices that feature USB powering. For integration with automation systems such as Crestron there is an RS-232 port, while two 12V LVC triggers allow the proctor to control other appliances in an A/V installation, such as motorized screens.
In addition to the aforementioned 3D RF emitter, the HD91 includes a pair of RF 3D glasses, an IR remote control, and a power cord.