Patent US3822096A successfully refreshed from Google Patents.
US3822096A
Expired / Lapsed
US
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Method and apparatus for the enlarged representation of the cross-section of non-destructed contact lenses or the like
Assignee: Optische Werke G Rodenstock
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Filing: 1972-08-01
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Granted: 1974-07-02
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Expires: 1992-08-01
Abstract
Abstract A method and apparatus for the enlarged reproduction of the cross-section of non-destroyed contact lenses or the like with the aid of a projection apparatus that includes a light source, a condenser, a lens carrier, an objective and a projection surface as well as an immersion vessel arranged between the condenser and the objective, into which the contact lens to be reproduced is inserted; the immersion vessel is filled with a liquid having an index of refraction approximately that of the contact lens.
Inventors
- 👤 K Wilms
- 👤 G Henke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:55
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/0004; G02B21/0016
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
116 words
A method for the enlarged representation of the cross-section of undestroyed contact lenses or the like comprising the steps of: a. sequentially disposing, along a prescribed optical path, a condenser lens arrangement, a lens carrier, an objective lens arrangement and a projection surface; b. inserting a contact lens, a selected cross-sectional plane of which is to be represented on an enlarged scale, into said lens carrier, with said cross-sectional plane being disposed in the object plane of said objective lens arrangement; and c. directing light from a light source along said prescribed optical path; whereby the contour of said selected cross-sectional plane of said lens will be reproduced on an enlarged scale on said projection surface.
Claim 2
Independent Claim
116 words
A method for the enlarged representation of the cross-section of undestroyed contact lenses or the like comprising the steps of: a. sequentially disposing, along a prescribed optical path, a condenser lens arrangement, a lens carrier, an objective lens arrangement and a projection surface; b. inserting a contact lens, a selected cross-sectional plane of which is to be represented on an enlarged scale, into said lens carrier, with said cross-sectional plane being disposed in the object plane of said objective lens arrangement; and c. directing light from a light source along said prescribed optical path; whereby the contour of said selected cross-sectional plane of said lens will be reproduced on an enlarged scale on said projection surface.
Claim 3
Dependent Claim
34 words
A method according to claim 1, wherein said lens is inserted into said lens carrier so that the axis of said lens extends at a right angle with respect to said prescribed optical path.
Claim 4
Dependent Claim
32 words
A method according to claim 2, wherein said lens carrier is an immersion vessel provided with transparent walls at least along those sides located in the direction of said prescribed optical path.
Claim 5
Dependent Claim
27 words
A method according to claim 3, further comprising the step of laterally illuminating said contact lens along a direction different from that of said prescribed optical path.
Claim 6
Dependent Claim
27 words
A method according to claim 1, further comprising the step of laterally illuminating said contact lens along a direction different from that of said prescribed optical path.
Claim 7
Dependent Claim
28 words
A method according to claim 3, characterized in that the immersion vessel is filled with a liquid having an index of refraction near that of the contact lens.
Claim 8
Independent Claim
128 words
An apparatus for effecting an enlarged representation of the cross-section of undestroyed contact lenses or the like comprising: first means for providing a first beam of light along a prescribed optical path; a condenser lens arrangement, a lens carrier means, an objective lens arrangement and a projection surface disposed sequentially along said prescribed optical path; and wherein said lens carrier means includes means for disposing a contact lens, a selected cross-sectional plane of which is to be represented on an enlarged scale, at a prescribed position on said optical path so that said selected cross-sectional plane is located in the objective plane of said objective lense arrangement; whereby the contour of said selected cross-sectional plane of said lens is reproduced on an enlarged scale on said projection surface.
Claim 9
Independent Claim
128 words
An apparatus for effecting an enlarged representation of the cross-section of undestroyed contact lenses or the like comprising: first means for providing a first beam of light along a prescribed optical path; a condenser lens arrangement, a lens carrier means, an objective lens arrangement and a projection surface disposed sequentially along said prescribed optical path; and wherein said lens carrier means includes means for disposing a contact lens, a selected cross-sectional plane of which is to be represented on an enlarged scale, at a prescribed position on said optical path so that said selected cross-sectional plane is located in the objective plane of said objective lense arrangement; whereby the contour of said selected cross-sectional plane of said lens is reproduced on an enlarged scale on said projection surface.
Claim 10
Dependent Claim
33 words
An apparatus according to claim 7, wherein said lens carrier means is an immersion vessel provided with transparent walls at least along those sides located in the direction of said prescribed optical path.
Claim 11
Dependent Claim
38 words
An apparatus according to claim 7, wherein said contact lens disposing means includes means for positioning said contact lens so that the axis of said lens extends at a right angle with respect to said prescribed optical path.
Claim 12
Dependent Claim
35 words
An apparatus according to claim 8, wherein said immersion vessel contains a liquid, the index of refraction of which is at least close to that of said contact lens, into which said lens is immersed.
Claim 13
Dependent Claim
38 words
An apparatus according to claim 10, wherein said contact lens disposing means includes means for positioning said contact lens so that the axis of said lens extends at a right angle with respect to said prescribed optical path.
Claim 14
Dependent Claim
56 words
An apparatus according to claim 8, wherein said first means and said condenser lens arrangement are arranged underneath said immersion vessel having a clear transparent bottom and wherein said apparatus further includes at least one deflection mirror disposed in said prescribed optical path for directing said first beam of light therealong and onto said projection surface.
Claim 15
Dependent Claim
46 words
An apparatus according to claim 8, wherein said immersion vessel further includes a reflecting surface means arranged at an angle with respect to said prescribed optical path for directing rays of light onto the surfaces of said lens laterally with respect to said prescribed optical path.
Claim 16
Dependent Claim
24 words
An apparatus according to claim 8, wherein the lens assembly of said condenser lens arrangement is displaceably disposed with respect to said immersion vessel.
Claim 17
Dependent Claim
29 words
An apparatus according to claim 8, characterized in that only the walls of the immersion vessel consist of clear transparent material which are disposed in said prescribed optical path.
Claim 18
Dependent Claim
28 words
An apparatus according to claim 13, characterized in that the reflecting surface means is formed by a prism which also serves as part of the lens carrier means.
Claim 19
Dependent Claim
46 words
An apparatus according to claim 12, wherein said immersion vessel further includes a reflecting surface means arranged at an angle with respect to said prescribed optical path for directing rays of light onto the surfaces of said lens laterally with respect to said prescribed optical path.
Claim 20
Dependent Claim
24 words
An apparatus according to claim 17, wherein the lens assembly of said condenser lens arrangement is displaceably disposed with respect to said immersion vessel.
Claim 21
Dependent Claim
38 words
An apparatus according to claim 18, wherein said contact lens disposing means includes means for positioning said contact lens so that the axis of said lens extends at a right angle with respect to said prescribed optical path.
Claim 22
Dependent Claim
28 words
An apparatus according to claim 19, characterized in that the reflecting surface means is formed by a prism which also serves as part of the lens carrier means.
Claim 23
Dependent Claim
29 words
An apparatus according to claim 20, characterized in that only the walls of the immersion vessel consist of clear transparent material which are disposed in said prescribed optical path.
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) | 1977-07-01 | 1977-12-31 | 1978-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-01 | 1981-12-31 | 1982-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-01 | 1985-12-31 | 1986-07-02 | $7700.00 | Window Closed / Lapsed |