System, method, and apparatus for displaying an image using multiple diffusers

Patent metadata

Field	Value
Publication number	US-2016195718-A1
Application number	US-201514590963-A
Country	US
Kind code	A1
Filing date	Jan 6, 2015
Priority date	Jan 6, 2015
Publication date	Jul 7, 2016
Grant date	—

Abstract

A system ( 100 ), method ( 900 ), and apparatus ( 110 ) for displaying an image ( 880 ). The system ( 100 ) can utilize two or more diffusers ( 282 ) separated by a gap ( 290 ) to reduce the coherence of the light ( 800 ) used in the display of the image ( 880 ). The diffusers ( 282 ) can be diffuser film ( 283 ), diffuser paper ( 284 ), diffuser glass ( 285 ), diffuser coatings ( 286 ), or virtually any form of multi-textured surfaces ( 287 ). The gap ( 290 ) between two diffusers ( 282 ) can be an air gap ( 291 ), a glass gap ( 292 ), or some other form of space that is different from the diffusers ( 282 ) and at least semi-transparent. The system ( 100 ) can be embodied as a DLP system ( 141 ), an LCD system ( 142 ), an LCOS system ( 143 ), a system ( 100 ) utilizing virtually any type of display technology ( 140 ).

First claim

1 . A system ( 100 ) for displaying an image ( 880 ) to a user ( 90 ), said system ( 100 ) comprising:
an illumination assembly ( 200 ) that provides for supplying a plurality of light ( 800 ) to an imaging assembly ( 300 ); said imaging assembly ( 300 ) that provides for creating said image ( 880 ) from said light ( 800 ); a diffuser subassembly ( 280 ) that provides for reducing the coherence of said light ( 800 ), wherein said diffuser subassembly ( 280 ) includes a plurality of diffusers ( 282 ) separated by a gap ( 290 ).

2 . The system ( 100 ) of claim 1 , wherein said image ( 880 ) has a coherence metric ( 832 ) that is at least about 5% less than said light ( 800 ) supplied by said light source ( 210 ) and wherein said image ( 880 ) has a color mix metric ( 834 ) that is greater than about 5% than said light ( 800 ) supplied by said imaging assembly ( 300 ).

3 . The system ( 100 ) of claim 1 , wherein said illumination assembly ( 200 ) includes said diffuser subassembly ( 280 ), said system ( 100 ) further comprising a projection subsystem ( 400 ) that provides for directing said image ( 880 ) to the user ( 90 ).

4 . The system ( 100 ) of claim 1 , wherein said plurality of diffusers ( 282 ) include at least one of: (a) a film diffuser ( 283 ); (b) a paper diffuser ( 282 ); and (c) a glass diffuser ( 284 ).

5 . The system ( 100 ) of claim 1 , wherein said gap ( 290 ) is an air gap ( 291 ).

6 . The system ( 100 ) of claim 1 , wherein said gap ( 290 ) is a glass gap ( 292 ).

7 . The system ( 100 ) of claim 1 , wherein said illumination assembly ( 200 ) includes a 3 LED lamp ( 213 ) for supplying said light ( 800 ).

8 . The system ( 100 ) of claim 1 , wherein said illumination assembly ( 200 ) includes a non-angular dependent lamp ( 219 ).

9 . The system ( 100 ) of claim 1 , wherein said system ( 100 ) is a DLP system ( 141 ).

10 . The system ( 100 ) of claim 1 , wherein said system ( 100 ) is a personal system ( 103 ).

11 . The system ( 100 ) of claim 1 , wherein said system ( 100 ) is a visor apparatus ( 115 ).

12 . The system ( 100 ) of claim 1 , wherein said system ( 100 ) is a VRD visor apparatus ( 116 ) worn by the user ( 90 ).

13 . The system ( 100 ) of claim 1 , wherein said diffuser subassembly ( 280 ) provides for reducing the coherence of said light ( 800 ) by at least about 10%.

14 . The system ( 100 ) of claim 1 , wherein said diffuser subassembly ( 280 ) provides for reducing the coherence of said light ( 800 ) by at least about 30%, and wherein said light ( 800 ) in said image ( 880 ) is modified by said projection assembly ( 400 ).

15 . The system ( 100 ) of claim 1 , wherein said illumination subassembly ( 200 ) includes said diffuser subassembly ( 280 ), wherein said gap ( 290 ) is at least about 1 mm in length, and wherein said light ( 800 ) in said displayed image ( 880 ) is at least 10% less coherent than said light ( 800 ) before said light ( 800 ) is diffused by said diffuser subassembly ( 280 ).

16 . A system ( 100 ) for displaying an image ( 880 ) to a user ( 90 ), said system ( 100 ) comprising:
an illumination assembly ( 200 ) that includes:
a light source ( 210 ) that provides for generating a plurality of light ( 800 ); and
a plurality of diffusers ( 282 ) separated by a gap ( 290 ) that provide for diffusing said light ( 800 );
an imaging assembly ( 300 ) that provides for creating said image ( 880 ) from said light ( 800 ) supplied by said illumination assembly ( 200 ) and diffused by said plurality of diffusers ( 282 ); and a projection assembly ( 400 ) that provides for directing said image ( 880 ) to the user ( 90 ).

17 . The system ( 100 ) of claim 16 , wherein said image ( 880 ) has a coherence metric ( 832 ) that is at least about 10% than said light ( 800 ) provided by said illumination assembly ( 200 ), wherein said image ( 880 ) has a color mix metric ( 834 ) that is at least about 5% greater than said light ( 800 ) provided by said illumination assembly ( 200 ), and wherein said gap ( 290 ) is no longer than about 10 mm in length.

18 . The system ( 100 ) of claim 16 , wherein said system ( 100 ) is a VRD visor apparatus ( 116 ) worn by the user ( 90 ).

19 . A method ( 900 ) for displaying an image ( 880 ) to a user ( 90 ), said method ( 900 ) comprising:
generating ( 912 ) a plurality of light ( 800 ) from a light source ( 210 ); diffusing ( 914 ) the said light ( 800 ) with a first diffuser ( 282 ); diffusing ( 916 ) said light ( 800 ) with a second diffuser ( 282 ); and creating ( 920 ) said image ( 880 ) from said light ( 800 ) from said second diffuser ( 282 ); wherein a gap ( 290 ) separates said first diffuser ( 282 ) and said second diffuser ( 282 ).

20 . The method ( 900 ) of claim 19 , wherein said gap ( 290 ) is no longer than about 10 mm, wherein said diffusers ( 282 ) are not substantially curved, wherein said image ( 880 ) is projected directly onto a plurality of eyes ( 92 ) of the user ( 90 ), and wherein said image ( 880 ) is modified after said image ( 880 ) is created but before said image ( 880 ) is displayed to the user ( 90 ).

Assignees

• Avegant Corp

Inventors

• Evans Allan Thomas

Classifications

• G02B2027/0114

  comprising dichroic elements · CPC title

• G02B2027/0145

  creating an intermediate image · CPC title

• G02B5/0294

  adapted to provide an additional optical effect, e.g. anti-reflection or filter · CPC title

• G02B27/017

  Head mounted · CPC title

• G02B2027/0138

  comprising image capture systems, e.g. camera · CPC title