Patent US4890905A successfully refreshed from Google Patents.
US4890905A
Expired / Lapsed
US
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Replica lens and method of manufacturing same
Assignee: US Philips Corp
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Filing: 1986-06-05
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Granted: 1990-01-02
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Expires: 2006-06-05
Abstract
Abstract Replica lens having a transparent lens body comprising one or more correction layers of a synthetic resin as well as a bonding layer of a synthetic resin with which the lens body is bonded to one or more auxiliary means or optical components, as well as a method of manufacturing the replica lens.
Inventors
- 👤 Gerard E. van Rosmalen
- 👤 Renso J. M. Zwiers
- 👤 Gerardus C. M. Dortant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:13
CPC Classifications
G; G01; G01B; G01B11/00; G01B11/26; B; B29; B29D; B29D11/00; B29D11/00009; G11; G11B; G11B7/00; G11B7/08; G11B7/09; Y; Y10; Y10S; Y10S359/00; Y10S359/90; Y10S359/903
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
73 words
A replica lens having a transparent lens body at least one refractive surface of which has a correction layer of a light-cured synthetic resin which gives the lens body the desired optical profile, characterized in that the lens body has at least one member selected from the group consisting of auxiliary means and optical components which member is bonded to the lens body by using a bonding layer of a light-cured synthetic resin.
Claim 2
Dependent Claim
73 words
A replica lens having a transparent lens body at least one refractive surface of which has a correction layer of a light-cured synthetic resin which gives the lens body the desired optical profile, characterized in that the lens body has at least one member selected from the group consisting of auxiliary means and optical components which member is bonded to the lens body by using a bonding layer of a light-cured synthetic resin.
Claim 3
Dependent Claim
21 words
A replica lens as claimed in claim 1, characterized in that the correction layer and the bonding layer are bonded together.
Claim 4
Dependent Claim
30 words
A replica lens as claimed in claim 2 wherein said correction layer is ethoxylated bisphenol-A dimethacrylate and said bonding layer is selected from the group of epoxyacrylate and urethaneacrylate resins.
Claim 5
Dependent Claim
56 words
A replica lens as claimed in claim 1 or 2, characterized in that the transparent lens body comprises, in addition to a correction layer, also an upright edge of a synthetic resin whose surface is provided at least partly with a reflection layer and thus forms a mirror which is bonded integrally to the lens body.
Claim 6
Dependent Claim
59 words
A replica lens as claimed in claim 1, characterized in that the lens body has auxiliary means comprising a member selected from the group consisting of an annular mounting and an annular magnet, which member is perpendicular to the optical axis of the lens and is bonded to the lens body by means of a synthetic resin bonding layer.
Claim 7
Dependent Claim
72 words
A replica lens as claimed in claim 5, characterized in that the lens body is a transparent spherical body which has two correction layers of a synthetic resin which are situated diammetrically oppositely to each other and have an aspherical profile as well as an annular mounting which is perpendicular to the optical axis of the lens and is bonded to the lens body by means of a synthetic resin bonding layer.
Claim 8
Dependent Claim
16 words
A replica lens as claimed in claim 5 in which said member is an annular mounting.
Claim 9
Dependent Claim
26 words
A replica lens as claimed in claim 7 in which said annular mounting is selected from the group of glass, brass, aluminum or a synthetic resin.
Claim 10
Dependent Claim
31 words
A replica lens as claimed in claim 8 in which the correction layer is ethoxylated bisphenol-A dimethacrylate; and said bonding layer is selected from the group of epoxyacrylate and urethaneacrylate resins.
Claim 11
Dependent Claim
16 words
A replica lens as claimed in claim 5 in which said member is an annular magnet.
Claim 12
Dependent Claim
19 words
A replica lens as claimed in claim 1 wherein said correction layer is a UV-light cured ethoxylated bisphenol-A dimethacrylate.
Claim 13
Independent Claim
172 words
A method of manufacturing a replica lens having a transparent lens body at least one refractive surface of which has a correction layer of a synthetic resin, characterized in that (1) a curable liquid synthetic resin composition is provided between a refractive surface of a transparent lens body and the surface of a mold whose profile is the negative of the desired optical profile of the replica lens; (2) the lens body and the mold are accurately positioned with respect to each other, wherein a correction layer of a synthetic is formed between the mold and the lens body; (3) a bonding layer of a curable liquid synthetic resin composition is provided between a non-refractive surface of the lens body and a surface of a member selected from the group consisting of an optical component and an auxiliary means; (4) the correction layer and the bonding layer are cured by exposure to light whereby the said member is bonded to the lens body; and (5) the lens is removed from the mold.
Claim 14
Independent Claim
172 words
A method of manufacturing a replica lens having a transparent lens body at least one refractive surface of which has a correction layer of a synthetic resin, characterized in that (1) a curable liquid synthetic resin composition is provided between a refractive surface of a transparent lens body and the surface of a mold whose profile is the negative of the desired optical profile of the replica lens; (2) the lens body and the mold are accurately positioned with respect to each other, wherein a correction layer of a synthetic is formed between the mold and the lens body; (3) a bonding layer of a curable liquid synthetic resin composition is provided between a non-refractive surface of the lens body and a surface of a member selected from the group consisting of an optical component and an auxiliary means; (4) the correction layer and the bonding layer are cured by exposure to light whereby the said member is bonded to the lens body; and (5) the lens is removed from the mold.
Claim 15
Dependent Claim
27 words
A method as claimed in claim 12, characterized in that an adjusting surface of the mold is used for positioning the optical component or auxiliary means member.
Claim 16
Dependent Claim
31 words
A method of manufacturing a replica lens as claimed in claim 13 in which said correction layer and said bonding layer are cured by exposure of the same to ultraviolet light.
Claim 17
Dependent Claim
35 words
A method of manufacturing a replica lens as claimed in claim 14 wherein the correction layer is ethoxylated bisphenol-A dimethacrylate; and said bonding layer is selected from the group of epoxy acrylate and urethaneacrylate resins.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1993-01-01 | 1993-07-03 | 1994-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-01 | 1997-07-03 | 1998-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-01 | 2001-07-03 | 2002-01-02 | $7700.00 | Window Closed / Lapsed |