US5345373A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lens holding block enabling accurate lens positioning
Assignee: Sumitomo Electric Industries Ltd
•
Filing: 1993-05-14
•
Granted: 1994-09-06
•
Expires: 2013-05-14
Abstract
Abstract A flat portion has a flat top surface, on which a chip carrier is provided. A light-emitting element is mounted on the chip carrier. A vertical portion is integral with the flat portion and extends vertically, i.e., perpendicularly to the flat top surface of the flat portion. A metal plate made of a metal having good welding performance is silver-brazed onto the vertical portion. A lens barrel containing a lens for focusing a light beam from the light-emitting element is inserted in a through-hole of the vertical portion and the metal plate, and welded to the metal plate so that the optical axes of the light-emitting element and the lens coincide with each other.
Inventors
- 👤 Kazuhiro Tanida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:12
CPC Classifications
H; H01; H01S; H01S5/00; H01S5/02; H01S5/022; H01S5/0225; H01S5/02253; G; G02; G02B; G02B6/00; G02B6/24; G02B6/42; G02B6/4201; G02B6/4204; G02B6/4219; G02B6/4236; G02B6/4237; G02B6/422; G02B6/4225; H01S5/023; H01S5/02325
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
146 words
A lens holding block on which a light-emitting element and a lens-barrel containing a lens for focusing a light beam emitted from the light-emitting element are to be mounted, comprising: a flat portion having a flat top surface on which the light-emitting element is to be mounted; a vertical portion being perpendicular to the flat top surface and integral with the flat portion and having the opening into which the lens-barrel is to be inserted, for holding the lens-barrel so that optical axes of the light-emitting element and the lens coincide with each other; and a metal plate made of a metal having good welding performance, having an opening, and fixed to the vertical portion on a side opposite to a side where the light-emitting element is to be provided so that the openings of the metal plate and the vertical portion conform to each other.
Claim 2
Dependent Claim
146 words
A lens holding block on which a light-emitting element and a lens-barrel containing a lens for focusing a light beam emitted from the light-emitting element are to be mounted, comprising: a flat portion having a flat top surface on which the light-emitting element is to be mounted; a vertical portion being perpendicular to the flat top surface and integral with the flat portion and having the opening into which the lens-barrel is to be inserted, for holding the lens-barrel so that optical axes of the light-emitting element and the lens coincide with each other; and a metal plate made of a metal having good welding performance, having an opening, and fixed to the vertical portion on a side opposite to a side where the light-emitting element is to be provided so that the openings of the metal plate and the vertical portion conform to each other.
Claim 3
Dependent Claim
17 words
The lens holding block of claim 1, wherein the metal plate is silver-brazed onto the vertical portion.
Claim 4
Dependent Claim
21 words
The lens holding block of claim 1, wherein the openings of the vertical portion and the metal plate constitute a through-hole.
Claim 5
Dependent Claim
22 words
The lens holding block of claim 1, wherein the opening of the vertical portion and the metal plate have a cut portion.
Claim 6
Dependent Claim
17 words
The lens holding block of claim 1, wherein the metal plate is made of a Fe-Ni-Cr alloy.
Claim 7
Dependent Claim
28 words
The lens holding block of claim 1, wherein a chip carrier on which the light-emitting element is to be mounted is further provided on the flat top surface.
Claim 8
Dependent Claim
152 words
A light source unit comprising: a light-emitting element; a chip carrier on which the light-emitting element is mounted; a lens for focusing a light beam emitted from the light-emitting element; a lens-barrel containing the lens; a lens holding block comprising: a flat portion having a flat top surface on which the chip carrier is provided; a vertical portion being perpendicular to the flat top surface and integral with the flat portion and having an opening in which the lens-barrel is inserted, and holding the lens-barrel so that optical axes of the light-emitting element and the lens coincide with each other; and a metal plate made of a metal having good welding performance, having an opening, and fixed to the vertical portion on a side opposite to a side where the light-emitting element is to be provided so that the openings of the metal plate and the vertical portion conform to each other.
Claim 9
Dependent Claim
152 words
A light source unit comprising: a light-emitting element; a chip carrier on which the light-emitting element is mounted; a lens for focusing a light beam emitted from the light-emitting element; a lens-barrel containing the lens; a lens holding block comprising: a flat portion having a flat top surface on which the chip carrier is provided; a vertical portion being perpendicular to the flat top surface and integral with the flat portion and having an opening in which the lens-barrel is inserted, and holding the lens-barrel so that optical axes of the light-emitting element and the lens coincide with each other; and a metal plate made of a metal having good welding performance, having an opening, and fixed to the vertical portion on a side opposite to a side where the light-emitting element is to be provided so that the openings of the metal plate and the vertical portion conform to each other.
Claim 10
Dependent Claim
17 words
The light source unit of claim 7 wherein the metal plate is silver-brazed onto the vertical portion.
Claim 11
Dependent Claim
21 words
The light source unit of claim 7, wherein the openings of the vertical portion and the metal plate constitute a through-hole.
Claim 12
Dependent Claim
22 words
The light source unit of claim 7, wherein the opening of the vertical portion and the metal plate have a cut portion.
Claim 13
Dependent Claim
17 words
The light source unit of claim 7, wherein the metal plate is made of a Fe-Ni-Cr alloy.
Claim 14
Dependent Claim
16 words
The light source unit of claim 7, wherein the lens-barrel is welded to the metal plate.
References Cited (Backward Citations)
EP0259888A2
Cited
JPH0193710A
Cited
EP0373225B1
Cited
JPH01271713A
Cited
EP0356331A2
Cited
JPH03120884A
Cited
EP0481877A1
Cited
JPH04213413A
Cited
JPH1167706A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-09-05 | 1998-03-07 | 1998-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-09-05 | 2002-03-07 | 2002-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-09-05 | 2006-03-07 | 2006-09-06 | $7700.00 | Window Closed / Lapsed |