US3792929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spectrophotometer utilizing fluid lens means
Assignee: Alfa Wassermann Inc
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Filing: 1972-05-24
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Granted: 1974-02-19
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Expires: 1992-05-24
Abstract
Abstract A means for passing radiant energy in a spectrophotometer through a sample holder without striking the walls thereof, including a field lens positioned adjacent the exit slit of the system for forming an image of the radiant energy dispersing element in the system onto a region on the far side of the sample holder. The field lens tunnels radiant energy through the sample holder without striking the walls thereof.
Inventors
- 👤 N Alpert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:58
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/25; G01N21/255
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
56 words
An improved spectrophotometer for passing radiant energy through a sample holder comprising means defining an exit slit of a monochromator and positioned in close proximity to a sample holder, and field lens means positioned adjacent to said exit slit defining means for directing said radiant energy through said sample holder without substantially striking the walls thereof.
Claim 2
Dependent Claim
56 words
An improved spectrophotometer for passing radiant energy through a sample holder comprising means defining an exit slit of a monochromator and positioned in close proximity to a sample holder, and field lens means positioned adjacent to said exit slit defining means for directing said radiant energy through said sample holder without substantially striking the walls thereof.
Claim 3
Dependent Claim
20 words
A spectrophotometer according to claim 1, in which said field lens means is positioned against said exit slit defining means.
Claim 4
Dependent Claim
24 words
A spectrophotometer according to claim 1, in which said field lens means is positioned between the exit slit defining means and said sample holder.
Claim 5
Dependent Claim
41 words
A spectrophotometer according to claim 1, in which said spectrophotometer includes a radiant energy dispersing element, and said field lens means projects an image of said radiant energy dispersing element onto a region on the far side of said sample holder.
Claim 6
Dependent Claim
24 words
A spectrophotometer according to claim 4, including a radiant energy sensing element for sensing the radiant energy that is projected through said sample holder.
Claim 7
Dependent Claim
30 words
A spectrophotometer according to claim 4, including means defining an aperture positioned adjacent said radiant energy dispersing element to match the shape thereof to the shape of said sample holder.
Claim 8
Dependent Claim
50 words
A spectrophotometer according to claim 4, in which said sample holder is adapted to move and said field lens means operates to direct said radiant energy so that substantially no part thereof strikes the walls of the sample holder during a predetermined portion of the movement of the sample holder.
Claim 9
Dependent Claim
43 words
A spectrophotometer according to claim 1, in which said spectrophotometer includes a radiant energy dispersing element and a radiant energy sensing element, and said field lens means projects an image of said radiant energy dispersing element substantially onto said radiant energy sensing element.
Claim 10
Dependent Claim
31 words
A spectrophotometer according to claim 1, including means defining an aperture positioned adjacent to said exit slit defining means to match the shape thereof to the shape of said sample holder.
Claim 11
Dependent Claim
70 words
An improved radiant energy output system for a spectrophotometer, said spectrophotometer including a monochromator and a sample holder, the improvement comprising means for mounting an exit slit of the monochromator in close proximity to the sample holder, and field lens mounting means for mounting a field lens means adjacent to said exit slit to direct radiant energy from said monochromator through the sample holder substantially without striking the walls thereof.
Claim 12
Dependent Claim
70 words
An improved radiant energy output system for a spectrophotometer, said spectrophotometer including a monochromator and a sample holder, the improvement comprising means for mounting an exit slit of the monochromator in close proximity to the sample holder, and field lens mounting means for mounting a field lens means adjacent to said exit slit to direct radiant energy from said monochromator through the sample holder substantially without striking the walls thereof.
Claim 13
Dependent Claim
69 words
An improved radiant energy output system for a spectrophotometer including a monochromator and a sample holder, the improvement comprising means defining an exit slit of the monochromator adapted to be mounted in close proximity to the sample holder, and field lens means mounted adjacent to said exit slit means for forming an image of the light dispersing element in the monochromator on the far side of the sample holder.
Claim 14
Dependent Claim
69 words
An improved radiant energy output system for a spectrophotometer including a monochromator and a sample holder, the improvement comprising means defining an exit slit of the monochromator adapted to be mounted in close proximity to the sample holder, and field lens means mounted adjacent to said exit slit means for forming an image of the light dispersing element in the monochromator on the far side of the sample holder.
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) | 1977-02-18 | 1977-08-20 | 1978-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-18 | 1981-08-20 | 1982-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-18 | 1985-08-20 | 1986-02-19 | $7700.00 | Window Closed / Lapsed |