US3558895A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light sensor with optical light piping
Assignee: Bell and Howell Co
•
Filing: 1968-11-29
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Granted: 1971-01-26
•
Expires: 1988-11-29
Abstract
Abstract An adjustable mount adapted to selectively align exit faces of a plurality of optical fibers with a transducer to enable remote readout of light intensity at the entrant face of each fiber.
Inventors
- 👤 Rudolf Hartmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:43
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/72; G01; G01J; G01J1/00; G01J1/42; G01J1/4209; G01N; G01N21/00; G01N21/17; G01N21/59; G01N21/5907
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
89 words
A sensor for light at a plurality of stations comprising: a plurality of optical fibers, each having an entrant face arranged for light reception, and an exit fact for output received by its entrant face from a respective station: attenuating means disposed over said exit faces for normalizing light output differences resulting from variation in light transmittance characteristics of said fibers; means including a light transducer associated with said exit faces for utilizing fiber transmitted normalized light; and means for selectively aligning each exit face with said light transducer.
Claim 2
Dependent Claim
89 words
A sensor for light at a plurality of stations comprising: a plurality of optical fibers, each having an entrant face arranged for light reception, and an exit fact for output received by its entrant face from a respective station: attenuating means disposed over said exit faces for normalizing light output differences resulting from variation in light transmittance characteristics of said fibers; means including a light transducer associated with said exit faces for utilizing fiber transmitted normalized light; and means for selectively aligning each exit face with said light transducer.
Claim 3
Dependent Claim
38 words
A combination according to claim 1 in which said aligning means comprises a mount arranged for adjustment relative said transducer, said exit faces carried by said mount for selective alignment with said transducer as said mount is adjusted.
Claim 4
Dependent Claim
32 words
A combination according to claim 2 further comprising a base, and a member supported from said base and spaced from said mount for passing light from said exit faces toward said transducer.
Claim 5
Dependent Claim
37 words
A combination according to claim 3 in which said exit faces are spaced apart in alignment remote from said entrant faces and further comprising track means supported from said base for guiding said mount over said member.
Claim 6
Dependent Claim
24 words
A combination according to claim 2 further comprising indexing means carried from said mount for effecting alignment of said exit faces with said transducer.
Claim 7
Dependent Claim
32 words
A combination according to claim 5 in which said indexing means includes a rack carried from said mount and a pawl urged for engagement with said rack to releasably hold said mount.
Claim 8
Dependent Claim
23 words
A combination according to claim 1 in which said attenuating means comprises a light attenuator fixed to said mount over each exit face.
Claim 9
Dependent Claim
43 words
A combination according to claim 3 in which said member comprises a light collimating lens arranged to pass light from said exit faces, said transducer comprising a photodectector fixed relative said base for converting the photon output passed by said lens into electrons.
Claim 10
Dependent Claim
17 words
A combination according to claim 1 further comprising a holder by which said entrant faces are mounted.
Claim 11
Dependent Claim
14 words
A combination according to claim 9 in which said entrant faces are uniformly disposed.
Claim 12
Dependent Claim
37 words
A combination according to claim 9 in which said holder has an adapter fashioned for reception in a light-passing aperture to enable sampling the quantity of light at positions in said aperture corresponding to said entRant faces.
Claim 13
Dependent Claim
90 words
A sensor for light at a plurality of stations comprising: a plurality of optical fibers, each having an entrant face arranged for light reception, and an exit face for output of light received by its entrant face from a respective of said stations; means including a light transducer associated with said exit faces for utilizing fiber transmitted light; means for selectively aligning each exit face with said light transducer; and filter means disposed adjacent said aligning means for passing light of predetermined hues toward said transducer from said exit faces.
Claim 14
Dependent Claim
90 words
A sensor for light at a plurality of stations comprising: a plurality of optical fibers, each having an entrant face arranged for light reception, and an exit face for output of light received by its entrant face from a respective of said stations; means including a light transducer associated with said exit faces for utilizing fiber transmitted light; means for selectively aligning each exit face with said light transducer; and filter means disposed adjacent said aligning means for passing light of predetermined hues toward said transducer from said exit faces.
Claim 15
Dependent Claim
32 words
A combination according to claim 12 in which said filter means comprises a turret with a plurality of color filters arranged for selective disposition between aligned said exit faces and said transducer.
Claim 16
Dependent Claim
42 words
A combination according to claim 13 in which said filter means includes a neutral density filter arranged in optical alignment with at least one color filter for adjusting the intensity of colored light according to variation in spectral sensitivity of said transducer.
Claim 17
Dependent Claim
37 words
A combination according to claim 13 in which said turret is fashioned as a rotatable disc with an outer notched edge for selectively indexing said color filters in alignment with said transducer and a selected exit face.
Claim 18
Dependent Claim
20 words
A combination according to claim 15 further comprising detent means for releasably holding said disc is in selected angular positions.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |