US3668406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light processing device utilizing beamsplitter having first region reflective from both sides and second region which is transparent
Assignee: Texas Instruments Inc
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Filing: 1970-11-16
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Granted: 1972-06-06
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Expires: 1990-11-16
Abstract
Abstract Disclosed is an interferometer using therein a beamsplitter having a thin-film, transparent substrate; a plurality of stripes, each stripe being reflective from both sides and affixed to the substrate; and two mirrors positioned such that as a wavefront of light is divided by the beamsplitter, the divided beams impinge upon the mirrors, whereby when one mirror is moved toward or away from the beamsplitter, the beams impinging upon the movable mirror are changed in phase from the beams impinging upon the other mirror, the phase being measured by a light detector.
Inventors
- 👤 Lee R Reid
- 👤 Charles Sumner Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:59
CPC Classifications
G; G01; G01J; G01J9/00; G01J9/02
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
162 words
A beamsplitter processing device comprising a. a light detector means, b. a substrate having at least one area reflective on both sides and at least one area transparent from both sides, such that light impinging on said substrate will be divided into a first beam reflected from said reflective area and a second beam transmitted through said transparent area, c. a first reflecting means positioned to reflect said first beam of light through said transparent area in the direction of said light detector means, d. a second reflecting means positioned as to reflect said second beam of light onto the back side of said reflective area of said substrate, such that said second beam is reflected by said reflective area of said substrate in the direction of said light detector means, said second reflecting means being movable towards and away from said substrate, e. whereby when said second reflective means is moved, the light amplitude at said light detector means is changed.
Claim 2
Dependent Claim
162 words
A beamsplitter processing device comprising a. a light detector means, b. a substrate having at least one area reflective on both sides and at least one area transparent from both sides, such that light impinging on said substrate will be divided into a first beam reflected from said reflective area and a second beam transmitted through said transparent area, c. a first reflecting means positioned to reflect said first beam of light through said transparent area in the direction of said light detector means, d. a second reflecting means positioned as to reflect said second beam of light onto the back side of said reflective area of said substrate, such that said second beam is reflected by said reflective area of said substrate in the direction of said light detector means, said second reflecting means being movable towards and away from said substrate, e. whereby when said second reflective means is moved, the light amplitude at said light detector means is changed.
Claim 3
Dependent Claim
177 words
A beamsplitter processing device comprising: a. a transparent substrate; b. a plurality of stripes, each of a different width, each of said plurality of stripes being reflective on both sides, and affixed to said transparent substrate whereby successive stripes are separated by transparent areas of said substrate, each of said areas being of a different width; c. a first reflecting surface positioned to reflect substantially all of the light reflected from one side of each of said stripes, back through a transparent area of said substrate adjacent each of said stripes, d. a second reflecting surface positioned to reflect substantially all of the light transmitted through each of said transparent areas of said substrate back onto the other side of each of said stripes, adjacent respective transparent areas, said second reflective surface being movable toward and away from said transparent substrate, and e. means to detect the amplitude of the combined light reflected from said other side of said stripes and the light reflected from said first reflective surface passing through said transparent areas of said substrate.
Claim 4
Dependent Claim
177 words
A beamsplitter processing device comprising: a. a transparent substrate; b. a plurality of stripes, each of a different width, each of said plurality of stripes being reflective on both sides, and affixed to said transparent substrate whereby successive stripes are separated by transparent areas of said substrate, each of said areas being of a different width; c. a first reflecting surface positioned to reflect substantially all of the light reflected from one side of each of said stripes, back through a transparent area of said substrate adjacent each of said stripes, d. a second reflecting surface positioned to reflect substantially all of the light transmitted through each of said transparent areas of said substrate back onto the other side of each of said stripes, adjacent respective transparent areas, said second reflective surface being movable toward and away from said transparent substrate, and e. means to detect the amplitude of the combined light reflected from said other side of said stripes and the light reflected from said first reflective surface passing through said transparent areas of said substrate.
Claim 5
Dependent Claim
330 words
A beamsplitter processing device comprising: a. a quartz mounting ring positioned at an angle of about 45* to the direction of travel of an impinging light wave; b. an optically flat pellicle of a nitrocellulose material of thickness between 0.3 and 3.1 microns mounted on said quartz mounting ring; c. nine optically flat reflecting stripes of gold deposited upon both sides of said pellicle, said strips being, respectively, of widths 0.090, 0.103, 0.118, 0.135, 0.154, 0.176, 0.201, 0.228, 0.259 inch with respective spaces therebetween of 0.084, 0.096, 0.110, 0.126, 0.144, 0.165, 0.188, 0.214, and 0.243 inch; d. a first optically flat front reflecting mirror spaced 1.9 inches from the geometrical center of the quartz mounting ring, the angle of the plane of said first reflecting mirror being 43* 07'' from the plane of the pellicle, whereby light reflected from the front side of each of said stripes is reflected by said first mirror onto said spaces adjacent each of said stripes; e. a second optically flat front reflecting mirror movable toward and away fRom said quartz mounting spaced 1.9 inches from the geometrical center of the quartz mounting ring, the angle of the plane of the second reflecting mirror being 43* 07'' from the plane of the pellicle, whereby light first impinging on respective spaces between said stripes is transmitted therethrough to said second mirror thereby to be reflected by said second mirror onto the back side of respective stripes adjacent said spaces; f. a light gathering lens in the path of the light beams reflected from the back side of said stripes and transmitted through said spaces after first having been reflected from said first mirror; g. a light sensitive detector spaced from said light gathering lens such that the light output from the lens strikes said detector; h. whereby movements of said second mirror toward or away from said mounting ring a measured distance produces a proportional change in amplitude of light falling on said light sensitive detector.
Claim 6
Dependent Claim
330 words
A beamsplitter processing device comprising: a. a quartz mounting ring positioned at an angle of about 45* to the direction of travel of an impinging light wave; b. an optically flat pellicle of a nitrocellulose material of thickness between 0.3 and 3.1 microns mounted on said quartz mounting ring; c. nine optically flat reflecting stripes of gold deposited upon both sides of said pellicle, said strips being, respectively, of widths 0.090, 0.103, 0.118, 0.135, 0.154, 0.176, 0.201, 0.228, 0.259 inch with respective spaces therebetween of 0.084, 0.096, 0.110, 0.126, 0.144, 0.165, 0.188, 0.214, and 0.243 inch; d. a first optically flat front reflecting mirror spaced 1.9 inches from the geometrical center of the quartz mounting ring, the angle of the plane of said first reflecting mirror being 43* 07'' from the plane of the pellicle, whereby light reflected from the front side of each of said stripes is reflected by said first mirror onto said spaces adjacent each of said stripes; e. a second optically flat front reflecting mirror movable toward and away fRom said quartz mounting spaced 1.9 inches from the geometrical center of the quartz mounting ring, the angle of the plane of the second reflecting mirror being 43* 07'' from the plane of the pellicle, whereby light first impinging on respective spaces between said stripes is transmitted therethrough to said second mirror thereby to be reflected by said second mirror onto the back side of respective stripes adjacent said spaces; f. a light gathering lens in the path of the light beams reflected from the back side of said stripes and transmitted through said spaces after first having been reflected from said first mirror; g. a light sensitive detector spaced from said light gathering lens such that the light output from the lens strikes said detector; h. whereby movements of said second mirror toward or away from said mounting ring a measured distance produces a proportional change in amplitude of light falling on said light sensitive detector.
Claim 7
Dependent Claim
148 words
A beamsplitter light processing device comprising in combination: a. a transparent substrate; b. a source of light impinging upon one surface of said substrate; c. a plurality of spaced stripes selectively affixed to said substrate having selectively variable widths and being selectively reflective on both sides, said stripes being separated by transparent areas of said substrate with said transparent areas having selectively variable widths; d. first means for detecting amplitude characteristics of the light passing through said transparent areas of said substrate; e. second means for directing light impinging on said transparent areas toward said first means; and f. third means for directing light impinging on one surface of said stripes toward said first means; whereby g. said first means produces a signal that represents the relative optical characteristics of the light impinging on said transparent areas and the light impinging on said one surface of said stripes.
Claim 8
Dependent Claim
148 words
A beamsplitter light processing device comprising in combination: a. a transparent substrate; b. a source of light impinging upon one surface of said substrate; c. a plurality of spaced stripes selectively affixed to said substrate having selectively variable widths and being selectively reflective on both sides, said stripes being separated by transparent areas of said substrate with said transparent areas having selectively variable widths; d. first means for detecting amplitude characteristics of the light passing through said transparent areas of said substrate; e. second means for directing light impinging on said transparent areas toward said first means; and f. third means for directing light impinging on one surface of said stripes toward said first means; whereby g. said first means produces a signal that represents the relative optical characteristics of the light impinging on said transparent areas and the light impinging on said one surface of said stripes.
Claim 9
Dependent Claim
165 words
A beamsplitter light processing device comprising in combination: a. mounting means having a transparent pellicle affixed thereto; b. a source of light impinging upon one surface of said pellicle; c. a plurality of spaced stripes selectively affixed to said one surface of said pellicle having selectively variable widths and being selectively reflective on both sides, said stripes being separated by transparent areas of said pellicle with said transparent areas having selectively variable widths; d. light detecting means for producing signals representing selected optical characteristics of the light passing through said pellicle; e. first movable means for directing light impinging on said one surface of said pellicle and passing through said transparent areas toward said stripes, whereupon said light is reflected toward said light detecting means; and f. second movable means for directing light impinging on said one surface of said pellicle and reflected by said stripes toward said transparent areas, whereupon said light passes through said transparent areas and impinges on said light detecting means.
Claim 10
Dependent Claim
165 words
A beamsplitter light processing device comprising in combination: a. mounting means having a transparent pellicle affixed thereto; b. a source of light impinging upon one surface of said pellicle; c. a plurality of spaced stripes selectively affixed to said one surface of said pellicle having selectively variable widths and being selectively reflective on both sides, said stripes being separated by transparent areas of said pellicle with said transparent areas having selectively variable widths; d. light detecting means for producing signals representing selected optical characteristics of the light passing through said pellicle; e. first movable means for directing light impinging on said one surface of said pellicle and passing through said transparent areas toward said stripes, whereupon said light is reflected toward said light detecting means; and f. second movable means for directing light impinging on said one surface of said pellicle and reflected by said stripes toward said transparent areas, whereupon said light passes through said transparent areas and impinges on said light detecting means.
Claim 11
Dependent Claim
170 words
A beamsplitter light processing device comprising in combination: a. a mounting ring of quartz having a transparent pellicle of nitrocellulose material affixed thereto; b. a source of light impinging upon one surface of said pellicle; c. a plurality of spaced stripes selectively affixed to said one surface of said pellicle having selectively variable widths and being selectively reflective on both sides, said stripes being separated by transparent areas of said pellicle with said transparent areas having selectively variable widths; d. means for detecting amplitude characteristics of the light passing through said transparent areas of said pellicle; e. first means for directing light impinging on said one surface of said pellicle and passing through said transparent areas toward said detecting means; and f. second means for diRecting light impinging on said one surface of said pellicle and reflected by said stripes toward said detecting means; whereby g. said detecting means produces signals representing selected optical characteristics of the light impinging on said transparent areas and the light impinging on said stripes.
Claim 12
Dependent Claim
170 words
A beamsplitter light processing device comprising in combination: a. a mounting ring of quartz having a transparent pellicle of nitrocellulose material affixed thereto; b. a source of light impinging upon one surface of said pellicle; c. a plurality of spaced stripes selectively affixed to said one surface of said pellicle having selectively variable widths and being selectively reflective on both sides, said stripes being separated by transparent areas of said pellicle with said transparent areas having selectively variable widths; d. means for detecting amplitude characteristics of the light passing through said transparent areas of said pellicle; e. first means for directing light impinging on said one surface of said pellicle and passing through said transparent areas toward said detecting means; and f. second means for diRecting light impinging on said one surface of said pellicle and reflected by said stripes toward said detecting means; whereby g. said detecting means produces signals representing selected optical characteristics of the light impinging on said transparent areas and the light impinging on said stripes.
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) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |