Patent US5274732A successfully refreshed from Google Patents.
US5274732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mount for linear lens array
Assignee: Eastman Kodak Co
•
Filing: 1992-01-06
•
Granted: 1993-12-28
•
Expires: 2012-01-06
Abstract
Abstract An optical assembly for an LED printhead includes a longitudinally extending linear lens array. A stiffener bar is attached to the lens array along a substantial longitudinal dimension of the lens array. A lens mount base plate supports the stiffener bar and a pin and slot connection is provided for permitting thermally induced dimensional change in two dimensions of the stiffener bar relative to the lens mount base plate.
Inventors
- 👤 Stephen J. Farnand
- 👤 Yee S. Ng
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:37
CPC Classifications
G; G02; G02B; G02B7/00; G02B7/02; G02B3/00; G02B3/0006; G02B3/0037; G02B3/005; G02B3/0075; G02B6/00; G02B6/24; G02B6/36; G02B6/38; G02B6/3807; G02B6/3833; G02B6/3834
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
119 words
An optical assembly, which comprises: a longitudinally extending linear lens array; a lens array stiffener bar attached to the lens array along a longitudinal dimension of the lens array; a lens mount base plate supporting the stiffener bar thereon; and connecting means for connecting and permitting thermally induced dimensional change in two dimensions of the stiffener bar relative to the lens mount base plate, said means including a first pin and slot connection between said stiffener bar and lens mount base plate allowing said dimensional change in one of said two dimensions and a second pin and slot connection between said stiffener bar and lens mount base plate allowing said dimensional change in a second of the two dimensions.
Claim 2
Dependent Claim
119 words
An optical assembly, which comprises: a longitudinally extending linear lens array; a lens array stiffener bar attached to the lens array along a longitudinal dimension of the lens array; a lens mount base plate supporting the stiffener bar thereon; and connecting means for connecting and permitting thermally induced dimensional change in two dimensions of the stiffener bar relative to the lens mount base plate, said means including a first pin and slot connection between said stiffener bar and lens mount base plate allowing said dimensional change in one of said two dimensions and a second pin and slot connection between said stiffener bar and lens mount base plate allowing said dimensional change in a second of the two dimensions.
Claim 3
Dependent Claim
22 words
The optical assembly of claim 1 and including resilient means for resiliently biasing the stiffener bar towards the lens mount base plate.
Claim 4
Dependent Claim
26 words
The optical assembly of claim 2 and wherein the resilient means includes a leaf spring that extends for a substantial longitudinal dimension of the stiffener bar.
Claim 5
Dependent Claim
19 words
The optical assembly of claim 2 and wherein the lens array is comprised of a plurality of optical fibers.
Claim 6
Dependent Claim
28 words
The optical assembly of claim 4 and wherein the resilient means includes a leaf spring that stiffener bar is approximately the same as that of the lens array.
Claim 7
Dependent Claim
27 words
The optical assembly of claim 1 and wherein the coefficient of thermal expansion of the stiffener bar is approximately the same as that of the lens array.
Claim 8
Dependent Claim
19 words
The optical assembly of claim 6 and wherein the lens array is comprised of a plurality of optical fibers.
Claim 9
Dependent Claim
19 words
The optical assembly of claim 1 and wherein the lens array is comprised of a plurality of optical fibers.
Claim 10
Dependent Claim
36 words
The optical assembly of claim 1 in combination with a plurality of light-emitting elements and support means for supporting the elements and lens array so that light from the elements is focused by said lens array.
Claim 11
Dependent Claim
29 words
The optical assemlby of claim 9 and wherein the support means includes a base plate structure that is of the same metal composition as the lens mount base plate.
Claim 12
Dependent Claim
23 words
The optical assembly of claim 9 and including means for thermally coupling the lens array to said support means for supporting the elements.
Claim 13
Dependent Claim
89 words
An optical assembly, which comprises: a linear gradient index fiber optic lens array having a longitudinal dimension; a stiffener bar adhesively attached to the lens array along the longitudinal dimension; a support means for supporting the stiffener bar and thermally coupled thereto for removing heat energy from the stiffener bar; a pin and slot connection means between the support means and the stiffener bar for permitting dimensional change of the bar relative to the support means and resilient means for urging the support means and stiffener bar into engagement.
Claim 14
Dependent Claim
89 words
An optical assembly, which comprises: a linear gradient index fiber optic lens array having a longitudinal dimension; a stiffener bar adhesively attached to the lens array along the longitudinal dimension; a support means for supporting the stiffener bar and thermally coupled thereto for removing heat energy from the stiffener bar; a pin and slot connection means between the support means and the stiffener bar for permitting dimensional change of the bar relative to the support means and resilient means for urging the support means and stiffener bar into engagement.
Claim 15
Dependent Claim
15 words
The optical assembly of claim 12 and wherein the resilient means is a leaf spring.
Claim 16
Dependent Claim
27 words
The optical assembly of claim 13 and wherein the pin and slot connection means permits two dimensional change of the stiffener bar relative to the support means.
Claim 17
Dependent Claim
34 words
The optical assembly of claim 12 and wherein the resilient means is a leaf spring that extends in the longitudinal dimension at least for a substantial portion of the length of the stiffener bar.
Claim 18
Dependent Claim
27 words
The optical assembly of claim 12 and wherein the coefficient of thermal expansion of the stiffener bar is approximately the same as that of the lens array.
References Cited (Backward Citations)
US2056693A
Cited
US3658407A
Cited
US4462662A
Cited
US4715682A
Cited
US4917453A
Cited
US4896168A
Cited
US4821051A
Cited
US4875057A
Cited
US4913526A
Cited
US4928139A
Cited
US5036339A
Cited
US5166999A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-12-27 | 1997-06-28 | 1997-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-12-27 | 2001-06-28 | 2001-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-12-27 | 2005-06-28 | 2005-12-28 | $7700.00 | Window Closed / Lapsed |