US4290696A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spectrophotometric system
Assignee: PerkinElmer Ltd
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Filing: 1979-09-24
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Granted: 1981-09-22
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Expires: 1999-09-24
Abstract
Abstract A spectrophotometric system includes an optical device for providing an optical path from a radiation generating means to a radiation receiving means. The optical device includes a substantially opaque layer which defines first and second coplanar face regions having different optical functions.
Inventors
- 👤 Henry M. Mould
- 👤 George E. Hirst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:57
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/02; G01J3/0205; G01J3/021
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
144 words
A spectrophotometric system comprising: photometric optics including means for generating photometric radiation; radiation receiving means is spaced relation with said radiation generating means; an optical device, interposed between said radiation generating means and said radiation receiving means, for providing an optical path from said radiation generating means to said radiation receiving means, said optical device comprising; a substantially opaque layer, said layer defining at least first and second coplanar face regions, said face regions having distinguishable optical functions being arranged in a predetermined geometrical relationship; means for supporting said layer, said means being a rigid substrate; a film bonding agent, between said layer and said rigid substrate means, for permanently maintaining said predetermined geometrical relationship, and means for mounting said optical device for movement between different operative positions to selectively interpose said face regions between said radiation generating means and said radiation receiving means.
Claim 2
Dependent Claim
144 words
A spectrophotometric system comprising: photometric optics including means for generating photometric radiation; radiation receiving means is spaced relation with said radiation generating means; an optical device, interposed between said radiation generating means and said radiation receiving means, for providing an optical path from said radiation generating means to said radiation receiving means, said optical device comprising; a substantially opaque layer, said layer defining at least first and second coplanar face regions, said face regions having distinguishable optical functions being arranged in a predetermined geometrical relationship; means for supporting said layer, said means being a rigid substrate; a film bonding agent, between said layer and said rigid substrate means, for permanently maintaining said predetermined geometrical relationship, and means for mounting said optical device for movement between different operative positions to selectively interpose said face regions between said radiation generating means and said radiation receiving means.
Claim 3
Dependent Claim
21 words
A spectrophotometric system as claimed in claim 1, wherein said rigid substrate is a unitary body and said layer is continuous.
Claim 4
Dependent Claim
22 words
A spectrophotometric system as claimed in claim 2, wherein said substrate is glass having a ground surface adjacent said film bonding agent.
Claim 5
Dependent Claim
30 words
A spectrophotometric system as claimed in claim 3, wherein said rigid substrate is disc-like and is mounted for rotation around an axis traverse to said disc through the disc center.
Claim 6
Dependent Claim
17 words
A spectrophotometric system as claimed in claim 1, wherein said film bonding agent is a polymerized substance.
Claim 7
Dependent Claim
17 words
A spectrophotometric system as claimed in claim 5, wherein said film bonding agent is an epoxy resin.
Claim 8
Dependent Claim
17 words
A spectrophotometric system as claimed in claim 6, wherein said film bonding agent has approximately uniform thickness.
Claim 9
Dependent Claim
16 words
A spectrophotometric system as claimed in claim 1, wherein said layer is a vacuum evaporated layer.
Claim 10
Dependent Claim
15 words
A spectrophotometric system as claimed in claim 8, wherein said vacuum evaporated layer is aluminum.
Claim 11
Dependent Claim
55 words
A spectrophotometric system as claimed in claim 1, wherein said first face region is a plane mirror and said second face region is a scatter grating said combined device being mounted for rotation around an axis selectively to enable either face region to be interposed between said radiation generating means and said radiation receiving means.
Claim 12
Dependent Claim
39 words
A spectrophotometric system as claimed in claim 10, wherein said system includes a monochromator said combined device is positioned just before said monochromator and is arranged to direct said photometric beam issuing from said photometric optics into said monochromator.
References Cited (Backward Citations)
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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) | 1984-09-21 | 1985-03-23 | 1985-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-21 | 1989-03-23 | 1989-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-21 | 1993-03-23 | 1993-09-22 | $7700.00 | Window Closed / Lapsed |