EP0640859A2
Expired / Lapsed
EP
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Image display unit
Assignee: Sharp Corp
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Filing: 1994-08-26
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Granted: —
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Expires: 2014-08-26
Abstract
Abstract The purpose of this invention is to provide an image display unit which is capable of displaying an environmental image at the periphery of an image on a display screen in order to create an image having heightened reality and to provide greater comfort to the eyes. The image display unit comprises a liquid-crystal display (24) for displaying a main image at a central portion of a visual field, a back light (25) thereof, a slide (22) for displaying an image at the periphery of a main central image, a back light (23) thereof and a lens system (21) for magnifying an image synthesized from the above-mentioned images. Displaying an environmental image at the periphery of an image on a display screen in accordance with an observer's preference, effectively raises the ambiance of the display and increases the comfort of viewing the display.
Inventors
- 👤 Atsushi Yamanaka
- 👤 Kunio Kojima
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 14:10
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/01; G02B27/017; G02B27/0172; G02B25/00; H; H04; H04N; H04N13/00; H04N13/30; H04N13/332; H04N13/344; G02B27/0101; G02B2027/0132; G02B2027/0178
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
63 words
An image display unit which is of a head-mounted display type for seeing a liquid-crystal display through a magnifying lens characterized by an image display (24,25,32,33), an environmental image display means (22,23,34,38) disposed at the periphery thereof for displaying an environmental image, and an image magnifying means (21,36) for magnifying images produced by the image display and by the environmental image display means.
Claim 2
Dependent Claim
32 words
An image display unit comprising two image display units defined in claim 1, which are disposed one against each of the right and left eyes of an observer to provide binocular vision.
Claim 3
Dependent Claim
30 words
An image display unit as defined in any one of claims 1 and 2, characterized in that the image display comprises a liquid-crystal display (24,33) and a back light (25,32).
Claim 4
Dependent Claim
31 words
An image display unit as defined in any one of claims 1, 2 and 3, characterized in that the environmental display means comprises a slide (22,38) and a back light (23,34).
Claim 5
Dependent Claim
49 words
An image display unit as defined in any one of claims 1, 2 and 3, characterized in that the environmental image display means comprises a slide (38), a liquid-crystal display (33) and a back light (34), said liquid-crystal display being capable of varying a part of an environmental image.
Claim 6
Dependent Claim
24 words
An image display unit as defined in any one of claims 4 and 5, characterized in that the slide (38) is replaceable with another.
Claim 7
Dependent Claim
30 words
An image display unit as defined in any one of claims 3, 4, 5 and 6, characterized in that the slide (38) is a stereoscopic photograph for providing binocular vision.
Claim 8
Dependent Claim
25 words
An image display unit as defined in any one of claims 3 to 7, characterized in that the back light (34) is an electroluminescent lamp.
Claim 9
Dependent Claim
74 words
An image display unit which is of a head-mounted display type for seeing a liquid-crystal display through a magnifying lens characterized by an image display (64,65,72,73,102,103), an environmental image display means (62,74,104) disposed at the periphery thereof for displaying an environmental image, a lighting means (63,75,105) for lighting the environmental image display means, and an image magnifying means (61,76,106) for magnifying images produced by the image display and by the environmental image display means.
Claim 10
Dependent Claim
25 words
An image display unit as defined in claim 9, characterized in that at least one display (163) and one large magnifying means (166) are used.
Claim 11
Dependent Claim
34 words
An image display unit comprising two sets of image display units defined in claim 9, which are disposed one for each of the left and right eyes of an observer to provide binocular vision.
Claim 12
Dependent Claim
38 words
An image display unit as defined in any one of claims 9, 10 and 11, characterized in that the environmental image lighting means (63) comprises a lighting apparatus and a lighting control unit for automatically adjusting the lighting.
Claim 13
Dependent Claim
28 words
An image display unit as defined in any one of claims 9, 10 and 11, characterized in that the environmental image display means (62) comprises a photograph (74,104,164).
Claim 14
Dependent Claim
28 words
An image display unit as defined in any one of claims 9, 10 and 11, characterized in that the environmental image display means (62) comprises a printed matter.
Claim 15
Dependent Claim
34 words
An image display unit as defined in any one of claims 9, 10 and 11, characterized in that the environmental image display means (62) comprises a pseudo-stereoscopic model (201) having irregularities on its surface.
Claim 16
Dependent Claim
29 words
An image display unit as defined in any one of claims 9, 10 and 11, characterized in that the environmental image display means (62) comprises a stereoscopic model (211).
Claim 17
Dependent Claim
43 words
An image display unit as defined in any one of claims 9, 10 and 11, characterized in that the environmental image display means (62) comprises a reflecting plate (142) for reflecting whole or a part of an image coming from the image display(141).
Claim 18
Dependent Claim
46 words
An image display unit as defined in any one of claims 9, 10 and 11, characterized in that the environmental image display means comprises a ribbon-like film (241) including a plurality of environmental images and a film-feeding mechanism (243) for changing one environmental image to another.
Claim 19
Dependent Claim
51 words
An image display unit as defined in any one of claims 9, 10 and 11, characterized in that the environmental image display means comprises a disc (251) including a plurality of environmental images and a disc-rotating mechanism (253) for rotating a disc to change over from one environmental image to another.
Claim 20
Dependent Claim
33 words
An image display unit as defined in any one of claims 9, 10 and 11, characterized in that the environmental image display means comprises a liquid crystal display (221,231) and a half-mirror (223,233).
Claim 21
Dependent Claim
36 words
An image display unit as defined in any one of claims 9, 10 and 11, characterized in that the environmental image display means comprises a screen (232), a projection type display (234) and a half-mirror (233).
Claim 22
Dependent Claim
32 words
An image display unit as defined in any one of claims 9, 10 and 11, characterized in that the environmental image display means comprises a cathode-ray tube (222) and a half-mirror (223).
Claim 23
Dependent Claim
69 words
An image display unit which is of a head-mounted display type for seeing a liquid-crystal display through a magnifying lens characterized by an image synthesizing means (274) for synthesizing an environmental image around an input image, an environmental image generating means (273) for generating an environmental image which is synthesizable around the input image, and a display (276) for displaying the image together with the environmental image synthesized thereto.
Claim 24
Dependent Claim
41 words
An image display unit as defined in claim 23, characterized in that it is further provided with an image synthesizing control unit for varying a ratio of the input image and the environmental image in the frame of a display unit.
Claim 25
Dependent Claim
47 words
An image display unit as defined in claim 24, is characterized in that it is further provided with an environmental image replacing the means for changing over an environmental image that is synthesizable around the input image to another one according to information given from the outside.
Claim 26
Dependent Claim
66 words
An image display unit comprising, first electronically controlled image display means (24,25;32,33;64,65;72,73;102,103;162,163;221;231;244;254) for displaying a main video image generally centrally of a visual field of the device, second image display means (22,23;34,35;52,53;62,63;74,75;104,105;164,165;171;181;191;201;211;222;232,234;241,242,243;251,252,253) for forming environmental image portion at the periphery of said main image portion to create a composite image of enhanced realism, and optical viewing means (21;36;61;76; 106;166;223;233) via which the composite image is observable.
Claim 27
Dependent Claim
40 words
An image display unit according to claim 26 wherein said second image display means forms a generally static environmental image portion and includes a central window within which said main image portion is formed by said first image display means.
References Cited (Backward Citations)
No citation records indexed.
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