US5208700A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lens cover assembly for binary diffractive optic lenses
Assignee: Xerox Corp
•
Filing: 1991-12-23
•
Granted: 1993-05-04
•
Expires: 2011-12-23
Abstract
Abstract A plurality of binary diffractive optic lenses are formed within a corresponding plurality of recesses in the surface of one substrate. The substrate with the binary diffractive optic lenses in the recess are bonded to another flat substrate. A plurality of individual binary diffractive optic lens cover assemblies are obtained by dicing the two bonded substrates.
Inventors
- 👤 Ellis D. Harris
- 👤 Steven A. Buhler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:56
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/18; G02B5/1876; G02B5/188; G02B5/1885
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
70 words
A lens cover assembly for binary diffractive optic lenses comprising: a first substrate having a plurality of binary diffractive optic lenses within a corresponding plurality of recesses on one surface of said first substrate, a second substrate, and bonding means for securing said first and second substrates together to form a lens cover assembly from the combination of one of said binary diffractive optic lens and one of said recesses.
Claim 2
Dependent Claim
70 words
A lens cover assembly for binary diffractive optic lenses comprising: a first substrate having a plurality of binary diffractive optic lenses within a corresponding plurality of recesses on one surface of said first substrate, a second substrate, and bonding means for securing said first and second substrates together to form a lens cover assembly from the combination of one of said binary diffractive optic lens and one of said recesses.
Claim 3
Dependent Claim
40 words
The lens cover assembly for binary diffractive optic lenses of claim 1 wherein said bonded first and second substrates form individual lens cover assemblies from the combination of one of said binary diffractive optic lens and one of said recesses.
Claim 4
Dependent Claim
36 words
The lens cover assembly for binary diffractive optic lenses of claim 1 wherein said one surface of said first substrate and one surface of said second substrate forming said recess are coated with an antireflective coating.
Claim 5
Dependent Claim
27 words
The lens cover assembly for binary diffractive optic lenses of claim 1 wherein said plurality of said binary diffractive optic lenses are coated with a reflective coating.
Claim 6
Dependent Claim
29 words
The lens cover assembly for binary diffractive optic lenses of claim 4 wherein said reflective coating has a uniform thickness on said plurality of said binary diffractive optic lenses.
Claim 7
Dependent Claim
19 words
The lens cover assembly for binary diffractive optic lenses of claim 1 wherein said bonding means is light absorbtive.
Claim 8
Dependent Claim
27 words
The lens cover assembly for binary diffractive optic lenses of claim 1 wherein said plurality of binary diffractive optic lenses have at least two different diffractive patterns.
Claim 9
Dependent Claim
29 words
The lens cover assembly for binary diffractive optic lenses of claim 1 wherein a breather hole extends through said first substrate to said recess of said lens cover assembly.
Claim 10
Dependent Claim
29 words
The lens cover assembly for binary diffractive optic lenses of claim 1 wherein a breather hole extends through said second substrate to said recess of said lens cover assembly.
Claim 11
Dependent Claim
29 words
The lens cover assembly for binary diffractive optic lenses of claim 1 wherein a breather hole extends through said bonding means to said recess of said lens cover assembly.
Claim 12
Dependent Claim
26 words
The lens cover assembly for binary diffractive optic lenses of claim 1 wherein said binary diffractive optic lenses on said first substrate are formed by photolithography.
Claim 13
Dependent Claim
26 words
The lens cover assembly for binary diffractive optic lenses of claim 1 wherein said binary diffractive optic lenses on said first substrate are formed by molding.
Claim 14
Dependent Claim
20 words
The lens cover assembly for binary diffractive optic lenses of claim 1 wherein said bonding means are an epoxy resin.
References Cited (Backward Citations)
US3827798A
Cited
US4190321A
Cited
US4146306A
Cited
US4591256A
Cited
US4787690A
Cited
US4846552A
Cited
US4828558A
Cited
US4983002A
Cited
US4813762A
Cited
US5104212A
Cited
US4994664A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-05-03 | 1996-11-02 | 1997-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-05-03 | 2000-11-02 | 2001-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-05-03 | 2004-11-02 | 2005-05-04 | $7700.00 | Window Closed / Lapsed |