US4632509A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glare-shielding type reflector
Assignee: Denso Corp
•
Filing: 1984-11-15
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Granted: 1986-12-30
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Expires: 2004-11-15
Abstract
Abstract This invention discloses a glare-shielding reflector which controls light reflectance electrically. The present invention provides a glare-shielding type reflector having a photosensor block which can detect an incident angle of a luminous flux to the reflector and a glare-shielding layer which is divided into plural units and driven individually. A glare-shielding layer formed on a front surface of a mirror is divided into plural units and only the specified glare-shielding units are automatically put into a glare-shielding state, according to the incident angle of the luminous flux to the mirror.
Inventors
- 👤 Shinya Ohmi
- 👤 Hiroshi Itoh
- 👤 Tsuyoshi Fukada
- 👤 Yasutoshi Suzuki
- 👤 Kunihiko Hara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:30
CPC Classifications
B; B60; B60R; B60R1/00; B60R1/02; B60R1/08; B60R1/083; B60R1/088; G; G02; G02B; G02B7/00; G02B7/18; G02B7/182; G02B7/1822; G02B7/1827; G02F; G02F1/00; G02F1/01; G02F1/15; G02F1/153
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
119 words
A glare-shielding type reflector comprising: a reflecting block having a mirror for reflecting incident light rays which impinge upon said reflecting block at different angles; a plurality of glare-shielding layers individually formed on an incident side of said mirror said layers being driven individually; a driving means for individually driving said plurality of glare-shielding layers by application of an electric field thereto; a photosensor means for detecting incident angle and intensity of each of said incident rays reflected on said mirror through each of said glare-shielding layers; and a control means for generating a control signal to allow said driving means to drive at least one of said glare-shielding layers in response to said incident angles of incident rays.
Claim 2
Dependent Claim
119 words
A glare-shielding type reflector comprising: a reflecting block having a mirror for reflecting incident light rays which impinge upon said reflecting block at different angles; a plurality of glare-shielding layers individually formed on an incident side of said mirror said layers being driven individually; a driving means for individually driving said plurality of glare-shielding layers by application of an electric field thereto; a photosensor means for detecting incident angle and intensity of each of said incident rays reflected on said mirror through each of said glare-shielding layers; and a control means for generating a control signal to allow said driving means to drive at least one of said glare-shielding layers in response to said incident angles of incident rays.
Claim 3
Dependent Claim
45 words
A glare-shielding type reflector according to claim 1, wherein: said plurality of glare-shielding layers are liquid crystal cells which are formed by dividing at least one of opposing transparent electrode layers of a liquid crystal cell formed on said mirror into a plurality of divisions.
Claim 4
Dependent Claim
36 words
A glare-shielding type reflector according to claim 2, wherein both of said opposing transparent electrode layers are divided into strips respectively and one series of strip electrodes is arranged orthogonally to another series of strip electrodes.
Claim 5
Dependent Claim
27 words
A glare-shielding type reflector according to claim 7, wherein said photosensor means comprises plural photosensors, each of which detects predetermined incident angle of said luminous flux, respectively.
Claim 6
Dependent Claim
27 words
A glare-shielding type reflector according to claim 4, wherein said photosensors have a common aperture and are located at specified positions in the back of said aperture.
Claim 7
Dependent Claim
26 words
A glare-shielding type reflector according to claim 1, wherein said photosensor means has a pinhole and an image sensor situated in the back of said pinhole.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-12-29 | 1990-06-30 | 1990-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-12-29 | 1994-06-30 | 1994-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-12-29 | 1998-06-30 | 1998-12-30 | $7700.00 | Window Closed / Lapsed |