Patent EP0324147A2 successfully refreshed from Google Patents.
EP0324147A2
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Light guide type display apparatus
Assignee: Seiko Epson Corp
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Filing: 1988-12-21
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Granted: —
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Expires: 2008-12-21
Abstract
Abstract A light guide type display apparatus has optical fibers (103) that optically couple together a light shutter (104) which serves as an image forming device and a display screen, the optical fibers being effectively interlaced with each other, so that the boundaries between the blocks (101) of the screen are only slightly observable and therefore a uniform and high-quality display is obtained. It is possible to reduce the amount of fibers used and hence lower the cost of the system as well as reduce the size (thickness) and weight of the apparatus by forming a display screen from a plurality of units.
Inventors
- 👤 Tomio Sonehara
- 👤 Jun Sugiyama
- 👤 Shinji Morozumi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 17:14
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/12; G; G02; G02B; G02B6/00; G02B6/04; G02B6/06; G02B6/24; G02B6/42; G02B6/4298; G09; G09F; G09F9/00; G09F9/30; G09F9/305
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
34 words
A light guide type display apparatus comprising: image forming means; and optical fibers for optically coupling together said image forming means and a display screen, said optical fibers being effectively interlaced with each other.
Claim 2
Dependent Claim
34 words
A light guide type display apparatus comprising: image forming means; and optical fibers for optically coupling together said image forming means and a display screen, said optical fibers being effectively interlaced with each other.
Claim 3
Dependent Claim
37 words
A light guide type display apparatus comprising: image forming means; and optical fibers for optically coupling together said image forming means and a display screen, wherein a screen is formed from a plurality of image forming means.
Claim 4
Dependent Claim
37 words
A light guide type display apparatus comprising: image forming means; and optical fibers for optically coupling together said image forming means and a display screen, wherein a screen is formed from a plurality of image forming means.
Claim 5
Dependent Claim
36 words
A light guide type display apparatus according to Claim 2 which comprises a plurality of units each including image forming means and optical fibers for optically coupling together said image forming means and a display screen.
Claim 6
Dependent Claim
59 words
A light guide type display apparatus according to Claim 2, further comprising luminance detecting means for detecting a luminance signal delivered from said image forming means, arithmetic means for setting a level of overall luminance for display on the basis of the detected luminance signal, and feedback means for setting a level of luminance for said image forming means.
Claim 7
Dependent Claim
21 words
A light guide type display apparatus according to Claim 2, wherein said plurality of image forming means are driven in parallel.
Claim 8
Dependent Claim
33 words
A light guide type display apparatus according to Claim 2, wherein display data for said plurality of image forming means are distributed to each image forming means in the form of serial data.
Claim 9
Dependent Claim
26 words
A light guide type display apparatus according to Claim 2, wherein display data for said plurality of image forming means are given from an image memory.
Claim 10
Dependent Claim
25 words
A light guide type display apparatus according to Claim 1 or 2, wherein said image forming means comprises a light source and a light shutter.
Claim 11
Dependent Claim
30 words
A light guide type display apparatus according to Claim 8, wherein the incident angle of light which is applied to said optical fibers from said light shutter is within 30°.
Claim 12
Dependent Claim
41 words
A light guide type display apparatus according to Claim 8, wherein the incident angle of light from said light source which enters said light shutter is set at an angle at which the maximum contrast of said optical shutter is obtained.
Claim 13
Dependent Claim
41 words
A light guide type display apparatus according to Claim 8, wherein the optical path length from said optical shutter to said optical fibers is equal to or less than a value obtained by dividing the picture element length by tan ϑ.
Claim 14
Dependent Claim
25 words
A light guide type display apparatus according to Claim 8, wherein said optical fibers include optical fibers which are used to align said light shutter.
Claim 15
Dependent Claim
37 words
A light guide type display apparatus including a light source, image forming means and a light guide, wherein the improvement comprises a light guide used to optically connect together said light source and said image forming means.
Claim 16
Dependent Claim
37 words
A light guide type display apparatus including a light source, image forming means and a light guide, wherein the improvement comprises a light guide used to optically connect together said light source and said image forming means.
References Cited (Backward Citations)
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