Patent JPS5670682A successfully refreshed from Google Patents.
US5099355A
Expired / Lapsed
US
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Optical element having heat control means
Assignee: Ricoh Co Ltd
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Filing: 1990-09-28
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Granted: 1992-03-24
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Expires: 2010-09-28
Abstract
Abstract An optical element that has a heat control unit comprising an electro-optic material member through which a linearly polarized optical beam penetrates. At least one pair of electrodes is disposed on the electro-optic material member. The electrodes sandwich the optical path of the beam. A voltage is applied to the electrodes to generate an electric field in the electro-optic material member which acts on the beam as a lens when the electric field is generated. The optical element further comprises a unit for controlling a temperature distribution in the electro-optic material member. The temperature controlling unit is disposed on the electro-optic material member.
Inventors
- 👤 Kan Tomita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:24
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/0147; G02F1/29; G02F1/03; G02F1/055
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
70 words
An optical element having heat control means comprising: an electro-optic material member through which a linearly polarized optical beam penetrates; at least one pair of electrodes disposed on said member sandwiching an optical path of said beam to generate an electric field in said member which acts on said beam as a lens; and means for controlling the temperature distribution in said member, said means being disposed on said member.
Claim 2
Dependent Claim
70 words
An optical element having heat control means comprising: an electro-optic material member through which a linearly polarized optical beam penetrates; at least one pair of electrodes disposed on said member sandwiching an optical path of said beam to generate an electric field in said member which acts on said beam as a lens; and means for controlling the temperature distribution in said member, said means being disposed on said member.
Claim 3
Dependent Claim
22 words
An optical element having heat control means according to claim 1, wherein said electro-optic material member is formed as a rectangular parallelepiped.
Claim 4
Dependent Claim
39 words
An optical element having heat control means according to claim 2, wherein said temperature distribution controlling means is disposed on a surface of said member which surface is perpendicular to the direction of the lens function of said member.
Claim 5
Dependent Claim
22 words
An optical element having heat control means according to claim 1, wherein said temperature distribution controlling means comprises a heat radiating fin.
Claim 6
Dependent Claim
23 words
An optical element having heat control means according to claim 1, wherein said temperature distribution controlling means comprises a Peltier element and thermo-sensor.
Claim 7
Dependent Claim
48 words
An optical element having heat control means according to claim 1, wherein said temperature distribution controlling means is so arranged that the temperature of said member along the direction perpendicular to the direction of the lens function thereof and to the optical path of said beam becomes constant.
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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) | 1995-03-24 | 1995-09-23 | 1996-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-24 | 1999-09-23 | 2000-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-24 | 2003-09-23 | 2004-03-24 | $7700.00 | Window Closed / Lapsed |