US4986633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microlens and process for producing same
Assignee: Brother Industries Ltd
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Filing: 1988-09-13
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Granted: 1991-01-22
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Expires: 2008-09-13
Abstract
Abstract A microlens having pliability is disclosed, which comprises a layer of a polymer composition having the thickness gradually changed, the layer of the polymer composition being formed by exposing to light a layer of a photo-reactive composition selected from (i) compositions containing a photopolymerizable monomer and a photopolymerizable initiator or (ii) compositions containing a photopolymerizable polymer. A process for producing the microlens is also disclosed.
Inventors
- 👤 Mitsuru Ohta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:28
CPC Classifications
B; B29; B29D; B29D11/00; B29D11/00009; B29D11/00365; B29D11/00278; B29C; B29C35/00; B29C35/02; B29C35/08; B29C35/0805; B29K; B29K2105/00; B29K2105/0002; Y; Y10; Y10S; Y10S359/00; Y10S359/90
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
90 words
A process for producing a microlens which comprises exposing a layer of a photo reactive composition selected from (i) compositions containing a photopolymerizable monomer and a photopolymerization initiator or (ii) compositions containing a photodecomposable polymer to light through a contact screen, said contact screen having a light transmittance which is changed in a predetermined direction such that the photo reactive composition photoreacts with the light to have an intensity distribution corresponding to the change in the light transmittance of the contact screen; and developing and rinsing the light exposed layer.
Claim 2
Dependent Claim
90 words
A process for producing a microlens which comprises exposing a layer of a photo reactive composition selected from (i) compositions containing a photopolymerizable monomer and a photopolymerization initiator or (ii) compositions containing a photodecomposable polymer to light through a contact screen, said contact screen having a light transmittance which is changed in a predetermined direction such that the photo reactive composition photoreacts with the light to have an intensity distribution corresponding to the change in the light transmittance of the contact screen; and developing and rinsing the light exposed layer.
Claim 3
Dependent Claim
23 words
A process as claimed in claim 1, wherein said photo reactive composition is a composition containing a photopolymerizable monomer and a photopolymerization initiator.
Claim 4
Dependent Claim
19 words
A process as claimed in claim 1, wherein said photo reactive composition is a composition containing a photodecomposable polymer.
References Cited (Backward Citations)
US4877717A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-01-21 | 1994-07-23 | 1995-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-01-21 | 1998-07-23 | 1999-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-01-21 | 2002-07-23 | 2003-01-22 | $7700.00 | Window Closed / Lapsed |