EP0454443A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Spectacles incorporating display means for a stereoscopic viewing system
Assignee: Sony Corp
•
Filing: 1991-04-24
•
Granted: —
•
Expires: 2011-04-24
Abstract
Abstract An optical apparatus using a display device is comprised of a lens system (6) having an optical axis, a display device (7) for displaying a video image on the optical axis (ox), a beam splitter (2) for splitting information of visual image, the beam splitter being formed so as to incline an angle of about 45 degrees relative to the optical axis and located under the lens system, and a shutter device (3) disposed in front of the beam splitter for controlling transmission of image from the surrounding, wherein the video image is shown as a virtual image with the image from the surroundings when viewer peeps the video image from the back of the beam splitter.
Inventors
- 👤 Akira Kawamura
- 👤 Kazuo Togawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 16:11
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/01; G02B27/017; G02B27/0172; H; H04; H04N; H04N13/00; H04N13/30; H04N13/332; H04N13/344; G02B27/0101; G02B2027/0132; G02B2027/0143; G02B2027/0178; H04N13/341
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
112 words
An optical apparatus using display means comprising: (a) lens means having an optical axis; (b) display means for displaying a video image on said optical axis; (c) beam splitter means for splitting information of visual image, said beam splitter means being formed so as to incline an angle of about 45 degrees relative to said optical axis and located under said lens means; and (d) shutter means disposed in front of said beam splitter means for controlling transmission of image from the surrounding, wherein said video image is shown as virtual image with said image from the surroundings when viewer observes said video image from the back of said beam splitter means.
Claim 2
Dependent Claim
27 words
An optical apparatus according to claim 1, further comprising sub-shutter means attached to the other eye, wherein said sub-shutter means shuts visual information of said other eye.
Claim 3
Dependent Claim
22 words
An optical apparatus according to claim 2, wherein transmission factor of said shutter means is different from that of said sub-shutter means.
Claim 4
Dependent Claim
25 words
An optical apparatus according to claim 2 or 3, wherein said shutter means and said sub-shutter means are composed of liquid crystal display (LCD) devices.
Claim 5
Dependent Claim
21 words
An optical apparatus according to claim 1, 2, 3 or 4 wherein said lens means is formed of a convex lens.
Claim 6
Dependent Claim
30 words
An optical apparatus according to claim 1, 2, 3 or 4 wherein said lens means, display means, beam splitter means and shutter means are housed in a casing for observation.
Claim 7
Dependent Claim
43 words
An optical apparatus according to claim 6, wherein said casing is separated into two parts, one of them being mounted on said display means, the other one being mounted on said lens means, and these two parts being formed movable for controlling visibility.
Claim 8
Dependent Claim
27 words
An optical apparatus according to claim 6 or 7, wherein said casing is attached to one eye, and said sub-shutter means is attached to the other eye.
Claim 9
Dependent Claim
18 words
An optical apparatus according to claim 8, wherein said sub-shutter means and said casing are attached on glasses.
Claim 10
Dependent Claim
22 words
An optical apparatus according to any one of the preceding claims, wherein said video image is generated by a video recording system.
Claim 11
Dependent Claim
23 words
An optical apparatus according to any one of the preceding claims, wherein a signal of said video image is a composite video signal.
Claim 12
Dependent Claim
28 words
An optical apparatus according to any one of the preceding claims, further comprising display control means for controlling said display means so as to display said video image.
Claim 13
Dependent Claim
33 words
An optical apparatus according to any one of the preceding claims, further comprising shutter control means for controlling each of said shutter means so as to control transmission factors of said shutter means.
Claim 14
Dependent Claim
24 words
An optical apparatus according to any one of preceding claims, wherein said optical apparatus is used as a head-up display for operating a vehicle.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.