US3894804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intensity level display apparatus for radiation analysis
Assignee: United States Department of the Army
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Filing: 1974-04-18
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Granted: 1975-07-15
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Expires: 1994-04-18
Abstract
Abstract An apparatus for radiation analysis is disclosed for providing alignment of complex groups of light source optical elements by continually displaying and scanning a beam shape and intensity obtained through the optical elements during alignment thereof. Optical elements for controlling the beam shape and the intensity of a light beam are manually adjusted to provide the desired beam shape. Alignment is terminated when the optimum intensity and beam shape conditions are obtained.
Inventors
- 👤 Grant R Detwiler
- 👤 Ronald E Chastain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:13
CPC Classifications
G; G01; G01J; G01J1/00; G01J1/42; G01J1/4257; G01B; G01B11/00; G01B11/26; G01B11/27; G01B11/272
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
132 words
Light beam intensity level scanning and display apparatus for alignment of optical elements comprising: first and second optical reflectors, a light source for generating a light beam which impinges on said reflectors, adjustable optical coupling means disposed between said reflectors for adjustable alignment therebetween to obtain a selectable light beam shape and intensity, a radiometer responsive to said light beam and having a proportional electrical output, a reflective surface disposed for receiving the light beam reflected from said second optical reflector for coupling energy from said second reflector to said radiometer, driving means coupled to said radiometer for sweeping said radiometer back and forth across the path of said beam, and an oscilloscope coupled to said radiometer output for displaying the intensity of radiant energy sampled as the radiometer traverses the beam.
Claim 2
Dependent Claim
132 words
Light beam intensity level scanning and display apparatus for alignment of optical elements comprising: first and second optical reflectors, a light source for generating a light beam which impinges on said reflectors, adjustable optical coupling means disposed between said reflectors for adjustable alignment therebetween to obtain a selectable light beam shape and intensity, a radiometer responsive to said light beam and having a proportional electrical output, a reflective surface disposed for receiving the light beam reflected from said second optical reflector for coupling energy from said second reflector to said radiometer, driving means coupled to said radiometer for sweeping said radiometer back and forth across the path of said beam, and an oscilloscope coupled to said radiometer output for displaying the intensity of radiant energy sampled as the radiometer traverses the beam.
Claim 3
Dependent Claim
39 words
Light beam intensity level scanning and display apparatus as set forth in claim 1 wherein said reflective surface is a beam splitter for reducing the beam intensity coupled to the radiometer and said second reflector is a parabolic mirror.
Claim 4
Dependent Claim
88 words
Light beam intensity level scanning and display apparatus as set forth in claim 2 wherein said driving means is a driving motor assembly comprising a drive motor mechanically linked to said radiometer for moving the radiometer back and forth across a sweep path, a motor control unit coupled to the drive motor for controlling the direction of movement, and first and second limit switches predisposed at opposing ends of the radiometer sweep path and electrically coupled to said motor control for periodically reversing the direction of radiometer travel.
Claim 5
Dependent Claim
41 words
Beam intensity level scanning and display apparatus as set forth in claim 3 wherein said first limit switch has an electrical output coupled to a trigger input of the oscilloscope for periodically reactivating the oscilloscope trace as the radiometer sweep recurrs.
Claim 6
Dependent Claim
28 words
Beam intensity level scanning and display apparatus as set forth in claim 4 wherein a reticle is disposed adjacent the radiometer for controlling the light beam coupled thereto.
References Cited (Backward Citations)
US2633525A
Cited
US3495913A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-14 | 1979-01-13 | 1979-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-14 | 1983-01-13 | 1983-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-14 | 1987-01-13 | 1987-07-15 | $7700.00 | Window Closed / Lapsed |