Patent US4093385A successfully refreshed from Google Patents.
US4093385A
Expired / Lapsed
US
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Color gradient analyzer
Assignee: Oki Electric Industry Co Ltd
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Filing: 1976-10-07
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Granted: 1978-06-06
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Expires: 1996-10-07
Abstract
Abstract A color gradient analyzer having a photo-electric convertor and a rotational filter having a plurality of optical color filters provides the information of an object. The output of said photo-electric convertor is switched according to the color of the color filter of said rotational filter in front of the photo-electric convertor, and is recorded on a recorder. A white ball is also provided for the calibration of the apparatus. Thus the apparatus can operate and provide a color information on a real-time basis.
Inventors
- 👤 Murata Noboru
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:39
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/46; G01J3/50; G01J3/51; G01N; G01N21/00; G01N21/17; G01N21/25; G01N21/27; G01N21/274; G01N21/276
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
115 words
A color gradient analyzer comprising a rotational filter having a plurality of optical color filters, a motor for rotating the rotational filter, a photo-electric converter positioned observable an object illuminated by the natural sun to be analyzed through one of said color filters, a white ball positionable between the photo-electric converter and an object to be analyzed, said white ball being able to be illuminated by the sunlight, a plurality of relays connected to the output of the photo-electric converter, a recorder connected to the outputs of said relays, means for providing the signal concerning the rotational angle of the rotational filter, and a plurality of delay circuits connected between said means and said relays.
Claim 2
Dependent Claim
115 words
A color gradient analyzer comprising a rotational filter having a plurality of optical color filters, a motor for rotating the rotational filter, a photo-electric converter positioned observable an object illuminated by the natural sun to be analyzed through one of said color filters, a white ball positionable between the photo-electric converter and an object to be analyzed, said white ball being able to be illuminated by the sunlight, a plurality of relays connected to the output of the photo-electric converter, a recorder connected to the outputs of said relays, means for providing the signal concerning the rotational angle of the rotational filter, and a plurality of delay circuits connected between said means and said relays.
Claim 3
Dependent Claim
36 words
A color gradient analyzer according to claim 1, further comprising a switch connected between the output of said means for providing rotational angle of the rotational filter and the input of one of the delay circuits.
Claim 4
Dependent Claim
39 words
A color gradient analyzer according to claim 1, further comprising an amplifier for amplifying the output of the photo-electric convertor and shaping the waveform of the same to a square wave, connected between the photo-electric convertor and the relays.
Claim 5
Dependent Claim
19 words
A color gradient analyzer according to claim 1, wherein the rotational speed of the rotational filter is about 360°/second.
Claim 6
Dependent Claim
28 words
A color gradient analyzer according to claim 1, further comprising an object glass and a condenser lens provided between the photo-electric converter and an object to be analyzed.
Claim 7
Dependent Claim
54 words
A color gradient analyzer according to claim 1, wherein said means for providing the signal concerning the rotational angle of the rotational filter, comprises a fixed photo-electric convertor, a small hole on said rotational filter, and a fixed lamp positioned so as to throw a light beam to said photo-electric convertor through said hole.
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) | 1981-06-05 | 1981-12-05 | 1982-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-05 | 1985-12-05 | 1986-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-05 | 1989-12-05 | 1990-06-06 | $7700.00 | Window Closed / Lapsed |