Patent US3783276A successfully refreshed from Google Patents.
US3783276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual beam optical system
Assignee: Instrumentation Specialties Co
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Filing: 1972-06-05
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Granted: 1974-01-01
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Expires: 1992-06-05
Abstract
Abstract To compensate for variations in the intensity of light emitted from different locations in or in different directions from a lamp, a radiating member is located in one focus of an ellipsoidal reflector to receive light from the lamp which is mounted with its bright spot in the other focus of the ellipsoidal reflector and to radiate in directions in line with a narrow dimension of the radiating member two oppositely directed, proportional-intensity beams of light through two aligned lightbeam holes in the walls of the ellipsoidal reflector on opposite sides of the radiating member, with the radiating member having, in a first embodiment, a surface that diffuses the light so that it is radiated with proportional intensities into both beams in accordance with Lambert''s cosine law, in a second embodiment, a surface that fluoreses light with proportional intensities into both beams, and in a third embodiment, a surface with flourescent particles that both diffuse the light and fluorese in response to it, all three embodiments causing the beams of light to be of proportional intensity. Interchangeable filters in the light beams of the third embodiment are selected to pass either the diffused light or the fluorescent light from the radiating member, thus enabling the system to be used for different purposes by changing filters.
Inventors
- 👤 R Allington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:07
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/25; G01N21/255
Claims Analysis
Total Claims: 49
Claim 1
Independent Claim
116 words
Apparatus for directing light from a light source into a plurality of paths, comprising; a light-radiating member; focusing means for focusing light from said light source onto a spot on said light-radiating member, whereby a substantial amount of light is radiated by said light-radiating member; said spot on said light-radiating member including lightradiating means for radiating light along at least a first and a second of said paths from said spot in response to said focused light with a substantially constant ratio of the intensity of the light in said first path to the intensity of the light in said second path, which ratio is substantially independent of fluctuations in the light from said light source.
Claim 2
Dependent Claim
116 words
Apparatus for directing light from a light source into a plurality of paths, comprising; a light-radiating member; focusing means for focusing light from said light source onto a spot on said light-radiating member, whereby a substantial amount of light is radiated by said light-radiating member; said spot on said light-radiating member including lightradiating means for radiating light along at least a first and a second of said paths from said spot in response to said focused light with a substantially constant ratio of the intensity of the light in said first path to the intensity of the light in said second path, which ratio is substantially independent of fluctuations in the light from said light source.
Claim 3
Dependent Claim
27 words
Apparatus according to claim 1 in which: said light-radiating member is a passive light radiating means; and said passive light-radiating means includes means for substantially diffusing light.
Claim 4
Dependent Claim
42 words
Apparatus according to claim 1 in which: said light-radiating member is fluorescent means for emitting light at a first frequency when impinged upon by light having a second frequency; and said light source includes means for emitting light of said second frequency.
Claim 5
Dependent Claim
17 words
Apparatus according to claim 1 in which said light-radiating member includes a means for substantially diffusing light.
Claim 6
Dependent Claim
18 words
Apparatus according to claim 4 in which said means for substantially diffusing light comprises a plurality of particles.
Claim 7
Dependent Claim
63 words
Apparatus according to claim 5 in which: said plurality of particles comprise fluorescent means for emitting light at a first frequency when impinged upon by light having a second frequency; said light source includes means for emitting light of said second frequency, whereby diffused light of said second frequency and fluorescent light of said first frequency are directed along said plurality of paths.
Claim 8
Dependent Claim
54 words
Apparatus according to claim 6 further including: a plurality of interchangeable filter mounting means; each of said interchangeable filter mounting means being mounted in a different one of said plurality of paths; and said filter mounting means being adapted to receive filters blocking a selected one of said first and second frequencies of light.
Claim 9
Dependent Claim
35 words
Apparatus according to claim 7 in which said fluorescent means comprises means for emitting light having a wavelength substantially in the range of 270 to 290 nanometers, and said light source is an ultraviolet lamp.
Claim 10
Dependent Claim
21 words
Apparatus according to claim 8 in which said filters include means for blocking light having a wavelength substantially of 254 nanometers.
Claim 11
Dependent Claim
63 words
Apparatus according to claim 9 further including; a plurality of photocells; said photocells being sensitive to a predetermined frequency; different ones of said photocells being mounted in line with different ones of said filters and said paths; and said filters including means for producing light of said predetermined frequency in response to light substantially in the wavelength range of 240 to 285 nanometers.
Claim 12
Dependent Claim
26 words
Apparatus according to claim 8 in which said filters include means for blocking light having a wavelength substantially in the range of 270 to 290 nanometers.
Claim 13
Dependent Claim
63 words
Apparatus according to claim 11 further including: a plurality of photocells; said photocells being sensitive to a predetermined frequency; different ones of said photocells being mounted in line with different ones of said filters and said paths; and said filters including means for producing light of said predetermined frequency in response to light substantially in the wavelength range of 240 to 285 nanometers.
Claim 14
Dependent Claim
49 words
Apparatus according to claim 1 in which: said focusing means includes an ellipsoidal reflector having first and second foci; said light-radiating member being located in said first focus of said ellipsoidal reflector; and said light source including means for emitting light from said second focus of said ellipsoidal reflector.
Claim 15
Dependent Claim
53 words
Apparatus according to claim 13 in which said ellipsoidal reflector includes; a first section having internal walls defining a first hole; a second section having internal walls defining a second hole; said first hole, first path and light radiating member being aligned; and said second hole, second path and radiating means being aligned.
Claim 16
Dependent Claim
26 words
Apparatus according to claim 13 in which: said light-radiating member is a passive light-radiating means; and said passive light-radiating means includes means for substantially diffusing light.
Claim 17
Dependent Claim
43 words
Apparatus according to claim 13 in which: said light-radiating member is a fluorescent means for emitting light at a first frequency when impinged upon by light having a second frequency; and said light source includes means for emitting light of said second frequency.
Claim 18
Dependent Claim
17 words
Apparatus according to claim 14 in which said light-radiating member includes a means for substantially diffusing light.
Claim 19
Dependent Claim
17 words
Apparatus according to claim 17 in which said means for diffusing light comprises a plurality of particles.
Claim 20
Dependent Claim
65 words
Apparatus according to claim 18 in which: said plurality of particles comprise fluorescent means for emitting light at a first frequency when impinged upon by light having a second frequency; and said light source includes means for emitting light of a said second frequency, whereby diffused light of said second frequency and fluorescent light of said first frequency are directed along said plurality of paths.
Claim 21
Dependent Claim
42 words
Apparatus according to claim 14 in which said light-radiating means includes: fluorescent means for emitting light at a first frequency when impinged upon by light having a second frequency; and said light source includes means for emitting light of said second frequency.
Claim 22
Dependent Claim
44 words
Apparatus according to claim 19 in which: said light-radiating member has at least first and second surfaces; said first and second surfaces being spaced at their nearest points a distance less than any other distance between two opposite surfaces of the light radiating member.
Claim 23
Dependent Claim
44 words
Apparatus according to claim 20 in which: said light-radiating member has at least first and second surfaces; said first and second surfaces being spaced at theiR nearest points a distance less than any other distance between two opposite surfaces of the light radiating member.
Claim 24
Dependent Claim
142 words
Apparatus for directing light from a light source into a plurality of paths, comprising: a light-radiating member having at least first and second surfaces; said light-radiating member being capable of passing light; said light-radiating member including light radiating means for responding to light impinging on said member from said light source by radiating light along at least a first of said paths from said first surface and along a second of said paths from said second surface with a substantially constant ratio of the intensity of the light in said first path to the intensity of the light in said second path, which ratio is substantially independent of fluctuations in the light from said light source; said first and second surfaces being spaced at their nearest points a distance less than any other distance between two opposite surfaces of the light-radiating member.
Claim 25
Dependent Claim
142 words
Apparatus for directing light from a light source into a plurality of paths, comprising: a light-radiating member having at least first and second surfaces; said light-radiating member being capable of passing light; said light-radiating member including light radiating means for responding to light impinging on said member from said light source by radiating light along at least a first of said paths from said first surface and along a second of said paths from said second surface with a substantially constant ratio of the intensity of the light in said first path to the intensity of the light in said second path, which ratio is substantially independent of fluctuations in the light from said light source; said first and second surfaces being spaced at their nearest points a distance less than any other distance between two opposite surfaces of the light-radiating member.
Claim 26
Dependent Claim
26 words
Apparatus according to claim 23 in which: said light-radiating member is a passive light-radiating means; and said passive light-radiating means includes means for substantially diffusing light.
Claim 27
Dependent Claim
16 words
Apparatus according to claim 23 in which said light-radiating means includes a means for diffusing light.
Claim 28
Dependent Claim
17 words
Apparatus according to claim 25 in which said means for diffusing light comprises a plurality of particles.
Claim 29
Dependent Claim
64 words
Apparatus according to claim 26 in which: said plurality of particles comprise fluorescent means for emitting light at a first frequency when impinged upon by light having a second frequency; and said light source includes means for emitting light of said second frequency, whereby diffused light of said second frequency and fluorescent light of said first frequency are directed along said plurality of paths.
Claim 30
Dependent Claim
54 words
Apparatus according to claim 27 further including: a plurality of interchangeable filter mounting means; each of said interchangeable filter mounting means being mounted in a different one of said plurality of paths; and said filter mounting means being adapted to receive filters blocking a selected one of said first and second frequencies of light.
Claim 31
Dependent Claim
35 words
Apparatus according to claim 28 in which said fluorescent means comprises means for emitting light having a wavelength substantially in the range of 270 to 290 nanometers and said light source is an ultraviolet lamp.
Claim 32
Dependent Claim
21 words
Apparatus according to claim 29 in which said filters include means for blocking light having a wavelength substantially of 254 nanometers.
Claim 33
Dependent Claim
63 words
Apparatus according to claim 30 further including: a plurality of photocells; said photocells being sensitive to a predetermined frequency; different ones of said photocells being mounted in line with different ones of said filters and said paths; and said filters including means for producing light of said predetermined frequency in response to light substantially in the wavelength range of 240 to 285 nanometers.
Claim 34
Dependent Claim
26 words
Apparatus according to claim 29 in which said filters includes means for blocking light having a wavelength substantially in the range of 270 to 290 nanometers.
Claim 35
Dependent Claim
63 words
Apparatus according to claim 32 further including: a plurality of photocells; said photocells being sensitive to a predetermined frequency; different ones of said photocells being mounted in line with different ones of said filters and said paths; and said filters including means for producing light of said predetermined frequency in response to light substantially in the wavelength range of 240 to 285 nanometers.
Claim 36
Dependent Claim
42 words
Apparatus according to claim 23 in which said light-radiating means includes: fluorescent means for emitting light at a first frequency when impinged upon by light having a second frequency; and said light source includes means for emitting light of said second frequency.
Claim 37
Dependent Claim
15 words
ApParatus according to claim 34 in which said fluorescent means comprises a clear fluorescent crystal.
Claim 38
Dependent Claim
22 words
Apparatus according to claim 3 in which said fluorescent means is a clear fluorescent means for emitting light at said first frequency.
Claim 39
Dependent Claim
22 words
Apparatus according to claim 3 in which said fluorescent means includes a plurality of particles for emitting light at said first frequency.
Claim 40
Dependent Claim
21 words
Apparatus according to 16 in which said fluorescent means is a clear fluorescent means for emitting light at said first frequency.
Claim 41
Dependent Claim
21 words
Apparatus according to 16 in which said fluorescent means is a clear fluorescent means for emitting light at said first frequency.
Claim 42
Dependent Claim
22 words
Apparatus according to claim 16 in which said fluorescent means includes a plurality of particles for emitting light at said first frequency.
Claim 43
Dependent Claim
22 words
Apparatus according to claim 34 in which said fluorescent means includes a plurality of particles for emitting light at said first frequency.
Claim 44
Dependent Claim
38 words
Apparatus according to claim 1 further including at least first and second photocells, said first photocell being positioned in one of said plurality of paths and said second photocell being positioned in another of said plurality of paths.
Claim 45
Dependent Claim
38 words
Apparatus according to claim 2 further including at least first and second photocells, said first photocell being positioned in one of said plurality of paths and said second photocell being positioned in another of said plurality of paths.
Claim 46
Dependent Claim
38 words
Apparatus according to claim 3 further including at least first and second photocells, said first photocell being positioned in one of said plurality of paths and said second photocell being positioned in another of said plurality of paths.
Claim 47
Dependent Claim
38 words
Apparatus according to claim 4 further including at least first and second photocells, said first photocell being positioned in one of said plurality of paths and said second photocell being positioned in another of said plurality of paths.
Claim 48
Dependent Claim
38 words
Apparatus according to claim 5 further including at least first and second photocells, said first photocell being positioned in one of said plurality of paths and said second photocell being positioned in another of said plurality of paths.
Claim 49
Dependent Claim
38 words
Apparatus according to claim 13 further including at least first and second photocells, said first photocell being positioned in one of said plurality of paths and said second photocell being positioned in another of said plurality of paths.
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) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |