US4847734A
Expired / Lapsed
US
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Light emitting element array
Assignee: Sharp Corp
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Filing: 1988-04-22
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Granted: 1989-07-11
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Expires: 2008-04-22
Abstract
Abstract A light emitting element array has light emitting elements disposed on a base plate in an array and a rod-like converging lens is disposed adjacent and parallel to this array. The end surfaces of this rod-like lens are curved, or otherwise so shaped that light beams from the array are refracted towards the center of the lens, thereby increasing the relative distance on a target surface that can be effectively irradiated.
Inventors
- 👤 Masaaki Katoh
- 👤 Tsukasa Inoquchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:43
CPC Classifications
H; H10; H10H; H10H29/00; H10H29/10; H10H29/14; H10H29/142; H04; H04N; H04N1/00; H04N1/024; H04N1/028; H04N1/02815; H04N1/02845; H04N1/02865; G; G02; G02B; G02B3/00; G02B3/0006; G02B3/02; G02B6/00; G02B6/24; G02B6/42; G02B6/4201; G02B6/4249; H04N1/02895; H10H20/00; H10H20/80; H10H20/85; H10H20/855; Y; Y10; Y10S; Y10S362/00; Y10S362/80
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
63 words
In a light emitting element array having a plurality of light emitting elements disposed on a base plate in an array and a rod-like converging lens disposed parallel to said array of said light emitting elements, the improvement wherein said rod-like converging lens has end surfaces which are so shaped as to refract light beams from said light emitting elements into central directions.
Claim 2
Dependent Claim
63 words
In a light emitting element array having a plurality of light emitting elements disposed on a base plate in an array and a rod-like converging lens disposed parallel to said array of said light emitting elements, the improvement wherein said rod-like converging lens has end surfaces which are so shaped as to refract light beams from said light emitting elements into central directions.
Claim 3
Dependent Claim
15 words
The light emitting element array of claim 1 wherein said end surfaces are convexly curved.
Claim 4
Dependent Claim
15 words
The light emitting element array of claim 1 wherein said end surfaces are convexly polyhedral.
Claim 5
Dependent Claim
23 words
The light emitting element array of claim 1 further comprising a supporting means for securing said lens with respect to said base plate.
Claim 6
Dependent Claim
30 words
The light emitting element array of claim 4 wherein said supporting means has wall portions and said end surfaces are partially buried in said wall portions of said supporting means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-07-10 | 1993-01-09 | 1993-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-10 | 1997-01-09 | 1997-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-10 | 2001-01-09 | 2001-07-11 | $7700.00 | Window Closed / Lapsed |