Patent US5214535A successfully refreshed from Google Patents.
US5214535A
Expired / Lapsed
US
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Lens cover assembly for binary diffractive optic lenses
Assignee: Xerox Corp
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Filing: 1991-12-17
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Granted: 1993-05-25
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Expires: 2011-12-17
Abstract
Abstract A plurality of binary diffractive optic lenses are formed in the surface of one substrate and a corresponding plurality of recesses are formed in the surface of another substrate. The binary diffractive optic lenses on one substrate are aligned with the recesses on the other substrate and the two substrates are bonded together. 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
2026-11-07 11:57
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/18; G02B5/1876; G02B5/188; G02B5/1885
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
109 words
A lens cover assembly for binary diffractive optic lenses comprising: a first substrate having a plurality of binary diffractive optic lenses on one surface of said first substrate, a second substrate having a plurality of recesses on one surface of said second substrate, said plurality of recesses corresponding to said plurality of binary diffractive optic lenses, and bonding means for securing said first and second substrates together such that each of said plurality of binary diffractive optic lenses is positioned in each of said plurality of recesses 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
109 words
A lens cover assembly for binary diffractive optic lenses comprising: a first substrate having a plurality of binary diffractive optic lenses on one surface of said first substrate, a second substrate having a plurality of recesses on one surface of said second substrate, said plurality of recesses corresponding to said plurality of binary diffractive optic lenses, and bonding means for securing said first and second substrates together such that each of said plurality of binary diffractive optic lenses is positioned in each of said plurality of recesses 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
30 words
The lens cover assembly for binary diffractive optic lenses of claim 1 wherein said recess slightly exceeds the dimensions of said binary diffractive optic lens in said lens cover assembly.
Claim 4
Dependent Claim
43 words
The lens cover assembly for binary diffractive optic lenses of claim 1 wherein said bonded first and second substrates are diced to form individual lens cover assemblies from the combination of one of said binary diffractive optic lens and one of said recesses.
Claim 5
Dependent Claim
34 words
The lens cover assembly for binary diffractive optic lenses of claim 1 wherein said one surface of said first substrate and said one surface of said second substrate are coated with an antireflective coating.
Claim 6
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 7
Dependent Claim
29 words
The lens cover assembly for binary diffractive optic lenses of claim 5 wherein said reflective coating has a uniform thickness on said plurality of said binary diffractive optic lenses.
Claim 8
Dependent Claim
19 words
The lens cover assembly for binary diffractive optic lenses of claim 1 wherein said bonding means is light absorptive.
Claim 9
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 10
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 11
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 12
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 13
Dependent Claim
33 words
The lens cover assembly for binary diffractive optic lenses of claim 1 wherein said binary diffractive optic lenses on said first substrate and said recesses on said second substrate are formed by photolithography.
Claim 14
Dependent Claim
33 words
The lens cover assembly for binary diffractive optic lenses of claim 1 wherein said binary diffractive optic lenses on said first substrate and said recesses on said second substrate are formed by molding.
Claim 15
Dependent Claim
20 words
The lens cover assembly for binary diffractive optic lenses of claim 1 wherein said bonding means are an epoxy resin.
Claim 16
Dependent Claim
111 words
A lens cover assembly for binary diffractive optic lenses comprising: a first substrate having a plurality of binary diffractive optic lenses on one surface of said first substrate, a second substrate, a spacing element for separating said first substrate and said second substrate to form a plurality of recesses corresponding to said plurality of binary diffractive optic lenses, and bonding means for securing said first and second substrates together such that each of said plurality of binary diffractive optic lenses is positioned with each of said plurality of recesses to form a lens cover assembly from the combination of one of said binary diffractive optic lens and one of said recesses.
Claim 17
Dependent Claim
111 words
A lens cover assembly for binary diffractive optic lenses comprising: a first substrate having a plurality of binary diffractive optic lenses on one surface of said first substrate, a second substrate, a spacing element for separating said first substrate and said second substrate to form a plurality of recesses corresponding to said plurality of binary diffractive optic lenses, and bonding means for securing said first and second substrates together such that each of said plurality of binary diffractive optic lenses is positioned with each of said plurality of recesses to form a lens cover assembly from the combination of one of said binary diffractive optic lens and one of said recesses.
Claim 18
Dependent Claim
20 words
The lens cover assembly for binary diffractive optic lenses of claim 15 wherein said spacing element is a polyimide layer.
Claim 19
Dependent Claim
43 words
The lens cover assembly for binary diffractive optic lenses of claim 15 wherein said bonded first and second substrates are diced to form individual lens cover assemblies from the combination of one of said binary diffractive optic lens and one of said recesses.
Claim 20
Dependent Claim
36 words
The lens cover assembly for binary diffractive optic lenses of claim 15 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 21
Dependent Claim
27 words
The lens cover assembly for binary diffractive optic lenses of claim 15 wherein said plurality of said binary diffractive optic lenses are coated with a reflective coating.
Claim 22
Dependent Claim
29 words
The lens cover assembly for binary diffractive optic lenses of claim 19 wherein said reflective coating has a uniform thickness on said plurality of said binary diffractive optic lenses.
Claim 23
Dependent Claim
19 words
The lens cover assembly for binary diffractive optic lenses of claim 15 wherein said bonding means is light absorptive.
Claim 24
Dependent Claim
27 words
The lens cover assembly for binary diffractive optic lenses of claim 15 wherein said plurality of binary diffractive optic lenses have at least two different diffractive patterns.
Claim 25
Dependent Claim
29 words
The lens cover assembly for binary diffractive optic lenses of claim 15 wherein a breather hole extends through said first substrate to said recess of said lens cover assembly.
Claim 26
Dependent Claim
29 words
The lens cover assembly for binary diffractive optic lenses of claim 15 wherein a breather hole extends through said second substrate to said recess of said lens cover assembly.
Claim 27
Dependent Claim
29 words
The lens cover assembly for binary diffractive optic lenses of claim 15 wherein a breather hole extends through said bonding means to said recess of said lens cover assembly.
Claim 28
Dependent Claim
29 words
The lens cover assembly for binary diffractive optic lenses of claim 15 wherein a breather hole extends through said spacer element to said recess of said lens cover assembly.
Claim 29
Dependent Claim
26 words
The lens cover assembly for binary diffractive optic lenses of claim 15 wherein said binary diffractive optic lenses on said first substrate are formed by photolithography.
Claim 30
Dependent Claim
26 words
The lens cover assembly for binary diffractive optic lenses of claim 15 wherein said binary diffractive optic lenses on said first substrate are formed by molding.
Claim 31
Dependent Claim
20 words
The lens cover assembly for binary diffractive optic lenses of claim 15 wherein said bonding means are an epoxy resin.
Claim 32
Dependent Claim
20 words
The lens cover assembly for binary diffractive optic lenses of claim 15 wherein said spacing element is formed by photolithography.
References Cited (Backward Citations)
US3827798A
Cited
US4190321A
Cited
US4146306A
Cited
US4591256A
Cited
US4787690A
Cited
US4846552A
Cited
US4828558A
Cited
US4983002A
Cited
US4813762A
Cited
US4994664A
Cited
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1996-05-24 | 1996-11-23 | 1997-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-05-24 | 2000-11-23 | 2001-05-25 | $3760.00 | Window Closed / Lapsed |
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