Portable Video Viewing Device
AssigneeSmallHD, LLC
InventorsDale Christopher Backus, Weston Lael Phillips
Life of this patent
Estimating the term…
Abstract
A viewfinder employing 3-LCD technology is described which employs a dichroic prism and provides full high definition resolution with a near-to-eye display. Video from digital cinema or digital broadcast cameras, as well as, playback of recorded high definition video is supported with a viewfinder no larger than 8 inches by 4 inches by 4 inches or even smaller. A telecentric lens system may be arranged so that monochrome optical modulators or LCDs to modulate red, green and blue video, respectively, are arranged at a focal point of this lens system.
Claims20
A viewfinder optical apparatus comprising:
- three light source devices that emit substantially parallel luminous flux to a side of a region to be illuminated;
- three electro-optic modulators that modulate the luminous flux coming from the three illumination devices in accordance with image information;
- three light diffusion layers each of which is disposed between one of the three electro-optic modulators and its respective light source device;
- a dichroic prism;
- and
- viewfinder optics.
A method of displaying high definition video in a viewfinder optical apparatus comprising:
- emitting substantially parallel luminous flux on each of three sides of a region to be illuminated utilizing three light source devices;
- modulating the luminous flux coming from the three illumination devices utilizing three electro-optic modulators in accordance with image information from the high definition video;
- employing three light diffusion layers each of which is disposed between one of the three electro-optic modulators and its respective light source device;
- combining light outputs from the electro-optic modulators utilizing a dichroic prism;
- and
- displaying an output display employing viewfinder optics.
Dependencies are inferred from the claim text.