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US3687518A
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Self-slitting spectroscope
Assignee: Individual
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Filing: 1971-03-23
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Granted: 1972-08-29
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Expires: 1991-03-23
Abstract
Abstract A self-slitting spectroscope comprising a narrow source along the axis of a hemi-cylindrical transmission grating of very large size to permit simultaneous viewing of spectral phenomena by a large number of observers.
Inventors
- 👤 Ralph G Steinhardt
- 👤 Julia W Calhoun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:21
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/12; G01J3/18; G01J3/02; G01J3/0291
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
90 words
A self-slitting spectroscope for the simultaneous viewing of spectral phenomena in the visible region by a plurality of observers comprising: a semi-cylindrical transmission grating, the area of said grating being sufficient to permit the simultaneous viewing of the grating by a plurality of observers; and, a self-slitting source of electromagnetic wave energy having a wavelength in the range from about 700 to about 400 nanometers, said source being mounted on the axis of said transmission grating whereby a plurality of observers may simultaneously view spectral phenomena in the visible region.
Claim 2
Dependent Claim
90 words
A self-slitting spectroscope for the simultaneous viewing of spectral phenomena in the visible region by a plurality of observers comprising: a semi-cylindrical transmission grating, the area of said grating being sufficient to permit the simultaneous viewing of the grating by a plurality of observers; and, a self-slitting source of electromagnetic wave energy having a wavelength in the range from about 700 to about 400 nanometers, said source being mounted on the axis of said transmission grating whereby a plurality of observers may simultaneously view spectral phenomena in the visible region.
Claim 3
Dependent Claim
15 words
The self-slitting spectroscope of claim 1 wherein said grating is laminated between sheets of plastic.
Claim 4
Dependent Claim
14 words
The self-slitting spectroscope of claim 1 wherein said source is a gas discharge tube.
Claim 5
Dependent Claim
21 words
The self-slitting spectroscope of claim 1 wherein said source is a tungsten wire having a width less than about 10 millimeters.
Claim 6
Dependent Claim
19 words
The self-slitting spectroscope of claim 1 wherein the radius of said grating is not less than about 1 foot.
Claim 7
Dependent Claim
31 words
The self-slitting spectroscope of claim 5 wherein said grating is laminated between sheets of plastic; and wherein said source is a tungsten wire having a diameter less than about 10 millimeters.
Claim 8
Dependent Claim
19 words
The self-slitting spectroscope of claim 6 wherein the height of said grating is substantially equal to the radius thereof.
Claim 9
Dependent Claim
19 words
The self-slitting spectroscope of claim 1 wherein the height of said grating is substantially equal to the radius thereof.
Claim 10
Dependent Claim
140 words
A self-slitting spectroscope for the simultaneous viewing of spectral phenomena in the visible region by a plurality of persons comprising: a housing having an elongated aperture in one wall thereof; an elongated source of electromagnetic energy at a wavelength in the range from about 700 to 400 nanometers; means for mounting said source in the aperture in said one wall of said housing; a transmission grating including a transparent material having a height of not less than about 6 inches, an area not less than about 1 square foot and being ruled with not less than about 6, 000 lines to the inch; and means for mounting said transmission grating at a distance not less than about 1 foot from the aperture in said one wall whereby a plurality of observers may simultaneously view spectral phenomena in the visible region.
Claim 11
Dependent Claim
140 words
A self-slitting spectroscope for the simultaneous viewing of spectral phenomena in the visible region by a plurality of persons comprising: a housing having an elongated aperture in one wall thereof; an elongated source of electromagnetic energy at a wavelength in the range from about 700 to 400 nanometers; means for mounting said source in the aperture in said one wall of said housing; a transmission grating including a transparent material having a height of not less than about 6 inches, an area not less than about 1 square foot and being ruled with not less than about 6, 000 lines to the inch; and means for mounting said transmission grating at a distance not less than about 1 foot from the aperture in said one wall whereby a plurality of observers may simultaneously view spectral phenomena in the visible region.
References Cited (Backward Citations)
US2431734A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |