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2. I tried the Bomaker Polaris 4K projector — and it's a ...

   www.aol.com/entertainment/tried-bomaker-polaris...

   Typically that kind of setup would start with a projector — one that requires a complicated ceiling mount, with wires fished through drywall to some kind of complicated audio setup, which itself ...

3. Projection screen - Wikipedia

   en.wikipedia.org/wiki/Projection_screen

   Projection screens may be permanently installed on a wall, as in a movie theater, mounted to or placed in a ceiling using a rollable projection surface that retracts into a casing (these can be motorized or manually operated), painted on a wall, [1] or portable with tripod or floor rising models as in a conference room or other non-dedicated ...

4. Projection clock - Wikipedia

   en.wikipedia.org/wiki/Projection_clock

   A projection clock (also called ceiling clock) is an analogue or digital clock equipped with a projector that creates an enlarged image of the clock face or display on any surface usable as a projection screen, most often the ceiling. [1] The clock can be placed almost anywhere if only the projected image must be seen.

5. Optical head-mounted display - Wikipedia

   en.wikipedia.org/wiki/Optical_head-mounted_display

   An optical head-mounted display (OHMD) is a wearable device that has the capability of reflecting projected images as well as allowing the user to see through it. In some cases, this may qualify as augmented reality (AR) technology.

6. Ceiling projector - Wikipedia

   en.wikipedia.org/wiki/Ceiling_projector

   The ceiling projector or cloud searchlight is used to measure the height of the base of clouds (called the ceiling) above the ground. It is used in conjunction with an alidade, usually positioned 1000 ft (300 m) away and wherever possible set at the same level. The projector is normally set at 90°, although 71° 31' may be used, in relation to ...

7. Video projector - Wikipedia

   en.wikipedia.org/wiki/Video_projector

   A projector in a standard form factor: The PG-D2870 projector from Sharp, which uses Digital Light Processing technology An image from a video projector in a home cinema. A video projector is an image projector that receives a video signal and projects the corresponding image onto a projection screen using a lens system.