Patent US2313668A successfully refreshed from Google Patents.
Patent US6595674B1 successfully refreshed from Google Patents.
US6595674B1
Expired / Lapsed
US
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Lighting device for surface inspection
Assignee: CCS Inc
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Filing: 1999-07-02
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Granted: 2003-07-22
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Expires: 2019-07-02
Abstract
Abstract In a lighting device according to the present invention, light emitted from a light source (L 1 ) is introduced to a light guide input terminal of a fiber bundle ( 3 ) in which a plurality of optical fibers ( 2 ) are bundled and is used for illumination by being emitted from a light guide output terminal ( 2 b ); the light source (L 1 ) consists of a plurality of LEDs and the light from each LED is respectively introduced to one or more optical fibers ( 2 ).
Inventors
- 👤 Kenji Yoneda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:46
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/84; G01N21/88; G01N21/8806; G02; G02B; G02B6/00; G02B6/0001; G02B6/0005; G02B6/0006; G01N2201/00; G01N2201/06; G01N2201/062; G01N2201/08; Y; Y10; Y10S; Y10S362/00; Y10S362/80
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
115 words
A lighting device for surface inspection, comprising: a light source including a plurality of LEDs; and an optical fiber bundle including a plurality of optical fibers, the optical fiber bundle having a light guide input terminal at one end of the bundle from which light emitted from a light source is fed, and a light guide output terminal at other end of the bundle from which light is extracted for illumination, wherein light emitted from each of the LEDs is guided into one optical fiber, and the light guide input terminal of the optical fibers is directly bonded to the LEDs, and wherein the LEDs are arranged in matrix over the surface of the board.
Claim 2
Dependent Claim
115 words
A lighting device for surface inspection, comprising: a light source including a plurality of LEDs; and an optical fiber bundle including a plurality of optical fibers, the optical fiber bundle having a light guide input terminal at one end of the bundle from which light emitted from a light source is fed, and a light guide output terminal at other end of the bundle from which light is extracted for illumination, wherein light emitted from each of the LEDs is guided into one optical fiber, and the light guide input terminal of the optical fibers is directly bonded to the LEDs, and wherein the LEDs are arranged in matrix over the surface of the board.
Claim 3
Dependent Claim
23 words
The lighting device for surface inspection according to claim 1 , wherein a cooling device is provided in the vicinity of said board.
Claim 4
Dependent Claim
27 words
The lighting device for surface inspection according to claim 2 , wherein, as said cooling device, a heat sink is provided in the rear of said board.
Claim 5
Dependent Claim
27 words
The lighting device for surface inspection according to claim 3 , wherein a Peltier element for cooling purpose is adhered to the rear face of said board.
Claim 6
Dependent Claim
32 words
The lighting device for surface inspection according to claim 2 , wherein, as said cooling device, a heat dissipating fan for introducing and circulating external air to the lighting device is provided.
Claim 7
Dependent Claim
25 words
The lighting device for surface inspection according to claim 1 , comprising a switch that turns on/off supplied power of said light-emitting element main bodies.
Claim 8
Dependent Claim
20 words
The lighting device for surface inspection according to claim 6 , wherein said switch is operated in pulse modulation mode.
Claim 9
Dependent Claim
43 words
A lighting device for surface inspection according to claim 1 , wherein reduction in the amount of loss of light in the junction region is achieved by mounting LED on light guide input terminal of optical fiber by means of a ball lens.
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JPH02143872A
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JPH07272514A
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JPH09127424A
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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) | 2006-07-21 | 2007-01-20 | 2007-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-07-21 | 2011-01-20 | 2011-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-07-21 | 2015-01-20 | 2015-07-22 | $7700.00 | Window Closed / Lapsed |