Patent US5225935A successfully refreshed from Google Patents.
US5225935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical device having a microlens and a process for making microlenses
Assignee: Sharp Corp
•
Filing: 1992-07-08
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Granted: 1993-07-06
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Expires: 2012-07-08
Abstract
Abstract An optical device having a lens substrate and a microlens portion formed thereon, wherein the microlens has its lens portion formed on the part of the optical device that has substantially the same coefficient of expansion as that of the lens substrate.
Inventors
- 👤 Noriko Watanabe
- 👤 Hiroshi Hamada
- 👤 Fumiaki Funada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:34
CPC Classifications
G; G02; G02B; G02B3/00; G02B3/0006; G02B3/0012; G02B3/0031; B; B29; B29C; B29C35/00; B29C35/02; B29C35/08; B29C43/00; B29C43/02; B29C43/021; B29C43/18; B29C70/00; B29C70/68; B29C70/78; B29D; B29D11/00; B29D11/00009; B29D11/00278; G02B1/00; G02B1/04; G02B6/00; G02B6/10; G02B6/12; G02B6/122; G02B6/1221; G03; G03F; G03F7/00; G03F7/0005; G03F7/001; B29C35/0805; B29C2035/0827; B29L; B29L2011/00; B29L2011/0016
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
56 words
In an optical device having a main substrate and a microlens formed thereon, wherein the microlens has a lens portion integrally formed on a lens substrate, said microlens being formed on said main substrate through a stamped adhesive layer and said main substrate having substantially the same coefficient of expansion as that of the lens substrate.
Claim 2
Dependent Claim
56 words
In an optical device having a main substrate and a microlens formed thereon, wherein the microlens has a lens portion integrally formed on a lens substrate, said microlens being formed on said main substrate through a stamped adhesive layer and said main substrate having substantially the same coefficient of expansion as that of the lens substrate.
Claim 3
Dependent Claim
16 words
An optical device according to claim 1, wherein the lens portion is made of photosensitive resin.
Claim 4
Dependent Claim
34 words
An optical device according to claims 1 or 2, wherein the stamped adhesive layer has a different index of refraction from that of the lens portion to shorten the focal length of the microlens.
Claim 5
Dependent Claim
23 words
An optical device according to claim 1, wherein the lens portion has substantially the same coefficient of expansion as that of the adhesive.
Claim 6
Dependent Claim
74 words
A process for producing a microlens, for use in combination with optical devices, the process comprising the steps of forming a photosensitive resin layer on a lens substrate, applying a light-permissive stamper to the photosensitive resin layer so as to shape the photosensitive layer into a lens portion, and curing the lens portion under the irradiation of ultra violet rays through the stamper, the stamper being shaped by a metal mother with photosensitive resin.
Claim 7
Dependent Claim
74 words
A process for producing a microlens, for use in combination with optical devices, the process comprising the steps of forming a photosensitive resin layer on a lens substrate, applying a light-permissive stamper to the photosensitive resin layer so as to shape the photosensitive layer into a lens portion, and curing the lens portion under the irradiation of ultra violet rays through the stamper, the stamper being shaped by a metal mother with photosensitive resin.
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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) | 1996-07-05 | 1997-01-04 | 1997-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-05 | 2001-01-04 | 2001-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-05 | 2005-01-04 | 2005-07-06 | $7700.00 | Window Closed / Lapsed |