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US5613769A
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Tir lens apparatus having non-circular configuration about an optical axis
Assignee: Innolux Corp
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Filing: 1995-06-05
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Granted: 1997-03-25
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Expires: 2015-06-05
Abstract
Abstract Lens apparatus includes a TIR lens having multiple facets, the lens having a central axis about which the facets extend in non-circular relation. The lens may have a non-circular perimeter about that axis, and that perimeter may be rectangular or square.
Inventors
- 👤 William A. Parkyn, Jr.
- 👤 David G. Pelka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 23:06
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/09; F; F21; F21V; F21V5/00; F21V5/04; F21V7/00; F21V7/0091; F24; F24S; F24S23/00; F24S23/30; F24S23/31; F24S23/70; G02B17/00; G02B17/006; G02B19/00; G02B19/0004; G02B19/0028; G02B19/0033; G02B19/0038; G02B19/0042; G02B19/0047; G02B19/0052; G02B19/009; G02B3/00; G02B3/02; G02B3/08; G02B6/00; G02B6/24; G02B6/42; G02B6/4201; G02B6/4204; G02B6/4206; F24S2023/83; F24S2023/832; G02B6/10; G02B6/12; G02B2006/12083; G02B2006/12102; G02B6/0001; Y; Y02; Y02E; Y02E10/00; Y02E10/40
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
65 words
In lens apparatus, a) a TIR lens having multiple facets, b) the lens having a central axis about which the facets extend in non-circular relation, c) said facets having TIR surfaces, d) and wherein said facets increasingly separate from one another in progressing through a primary arc about said axis, and increasingly converge toward one another in progressing through a secondary arc about said axis.
Claim 2
Dependent Claim
65 words
In lens apparatus, a) a TIR lens having multiple facets, b) the lens having a central axis about which the facets extend in non-circular relation, c) said facets having TIR surfaces, d) and wherein said facets increasingly separate from one another in progressing through a primary arc about said axis, and increasingly converge toward one another in progressing through a secondary arc about said axis.
Claim 3
Dependent Claim
20 words
The apparatus of claim 1 wherein the lens has a perimeter which extends about said axis and which is non-circular.
Claim 4
Dependent Claim
11 words
The apparatus of claim 2 wherein said perimeter is generally rectangular.
Claim 5
Dependent Claim
12 words
The apparatus of claim 2 wherein the perimeter has generally square configuration.
Claim 6
Dependent Claim
21 words
The apparatus of claim 1 wherein the facets have portions with progressively varying TIR face tilt, in progressing about said axis.
Claim 7
Dependent Claim
26 words
The apparatus of claim 1 wherein the facets have portions with progressively varying height above a plane normal to said axis, in progressing about said axis.
Claim 8
Dependent Claim
13 words
The apparatus of claim 6 including a light source facing said TIR lens.
Claim 9
Dependent Claim
13 words
The apparatus of claim 1 including a light source facing said TIR lens.
Claim 10
Dependent Claim
66 words
) In lens apparatus, a) a TIR lens having multiple facets, b) the lens having a central axis about which the facets extend in non-circular relation, c) the lens having a perimeter which extends about said axis and which is non-circular, d) said perimeter having generally square configuration, e) and wherein the facet closest to said perimeter has a periphery which also has generally square configuration.
Claim 11
Dependent Claim
66 words
) In lens apparatus, a) a TIR lens having multiple facets, b) the lens having a central axis about which the facets extend in non-circular relation, c) the lens having a perimeter which extends about said axis and which is non-circular, d) said perimeter having generally square configuration, e) and wherein the facet closest to said perimeter has a periphery which also has generally square configuration.
Claim 12
Dependent Claim
37 words
The apparatus of claim 5 wherein said facets increasingly separate from one another in progressing through a primary arc about said axis, and increasingly converge toward one another in progressing through a secondary arc about said axis.
Claim 13
Dependent Claim
13 words
The apparatus of claim 9 including a light source facing said TIR lens.
Claim 14
Dependent Claim
139 words
In lens apparatus, a) a TIR lens having multiple facets, b) the lens having a central axis about which the facets extend in non-circular relation, c) the lens having a perimeter which extends about said axis and which is non-circular, d) said perimeter having generally square configuration, e) and wherein the square configuration has four corners, A, B, C, and D, and wherein there are loci defined as follows: ______________________________________
loci location
______________________________________
AB mid way between A and B
BC mid way between B and C
CD mid way between C and D
DA mid way between D and A
______________________________________ and wherein the facets have first portions between said axis, and each of A, B, C, and D that are further apart than facet second portions between said axis and each of AB, BC, CD, and DA.
Claim 15
Dependent Claim
139 words
In lens apparatus, a) a TIR lens having multiple facets, b) the lens having a central axis about which the facets extend in non-circular relation, c) the lens having a perimeter which extends about said axis and which is non-circular, d) said perimeter having generally square configuration, e) and wherein the square configuration has four corners, A, B, C, and D, and wherein there are loci defined as follows: ______________________________________
loci location
______________________________________
AB mid way between A and B
BC mid way between B and C
CD mid way between C and D
DA mid way between D and A
______________________________________ and wherein the facets have first portions between said axis, and each of A, B, C, and D that are further apart than facet second portions between said axis and each of AB, BC, CD, and DA.
Claim 16
Dependent Claim
37 words
The apparatus of claim 12 wherein said facets have third portions that extend between said second and first portions, said third portions increasingly separating from one another in progressing from said second portions toward said first portions.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-03-24 | 2000-09-23 | 2001-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-03-24 | 2004-09-23 | 2005-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-03-24 | 2008-09-23 | 2009-03-25 | $7700.00 | Window Closed / Lapsed |