Optical bench assembly

Patent metadata

Field	Value
Publication number	US-9753242-B2
Application number	US-201414552509-A
Country	US
Kind code	B2
Filing date	Nov 25, 2014
Priority date	Nov 27, 2013
Publication date	Sep 5, 2017
Grant date	Sep 5, 2017

Abstract

An optical bench assembly is disclosed. In one embodiment, the optical bench assembly includes a housing and a cantilever optical bench for holding optical components. Further, the cantilever optical bench includes a front flange coupled to the housing and an optical bench attached to the front flange such that the optical bench is not susceptible to movements of the housing due to varying ambient conditions and resulting loads.

First claim

What is claimed is:

1. An optical bench assembly, comprising:
a housing having a first end and a second end;
a laser diode attached to the outside of the housing at the second end, the laser diode being configured to produce a resultant beam; and
a cantilever optical bench having a first end and a second end for mounting optical components, wherein the cantilever optical bench includes: a flange attached to the first end of the cantilever optical bench used to couple the cantilever optical bench to the first end of the housing; the cantilever optical bench being attached to the housing via the flange on the first end of the cantilever optical bench such that the cantilever optical bench and the flange are enclosed by the housing, but the cantilever optical bench is only attached at the first end such that any heat generated by the laser diode attached to the outside of the second end of the housing is dissipated into the housing and not transferred to the cantilever optical bench and where any heat generated by optical components mounted to the cantilever optical bench results in a predominant thermal gradient in the cantilever optical bench extending along a length of the cantilever optical bench such that the resultant beam is not susceptible to movements of the housing and will remain in alignment.

2. The optical bench assembly of claim 1 , wherein the optical components are selected from the group consisting of mirrors, polarizers and a laser medium.

3. The optical bench assembly of claim 1 , wherein the resultant beam remaining in alignment is defined by having an angle misalignment between the optical components of less than 100 μradians.

4. An optical bench assembly, comprising:
a housing having a first end and a second end;
a laser diode attached to the housing at the second end and being configured to produce a resultant beam; and
a cantilever optical bench having a first end and a second end for mounting optical components, wherein the optical components are selected from the group consisting of mirrors, polarizers and a laser medium and wherein the cantilever optical bench includes: a flange attached to the first end of the cantilever optical bench used to couple to the first end of the housing; the cantilever optical bench being attached to the first end of the housing via the flange attached to the first end of the cantilever optical bench such that the optical bench is not susceptible to movements of the housing due to vibrations or thermal expansion in the housing resulting from any heat generated by the laser diode attached to the second end of the housing dissipating into the housing and where any heat generated by components mounted to the optical bench results in a predominant thermal gradient in the optical bench extending along a length of the optical bench such that the resultant beam will remain in alignment.

5. The optical bench assembly of claim 4 , wherein the resultant beam remaining in alignment is defined by having an angle misalignment between the optical components of less than 100 μradians.

6. An optical bench assembly, comprising:
a housing having a first end and a second end;
a cantilever optical bench for mounting optical components, wherein the optical components are selected from the group consisting of mirrors, polarizers and a laser medium and wherein the cantilever optical bench has a first end and a second end and includes:
a flange for coupling the first end of the cantilever optical bench to the first end of the housing; the cantilever optical bench being attached only to the flange such that the cantilever optical bench is not susceptible to movements of the housing; and
a laser diode attached to the inside of the second end of the housing and spaced apart from a laser medium attached to the cantilever optical bench such that any heat generated by the laser diode attached to the inside of the second end of the housing is dissipated into the housing and not transferred to the optical bench and any heat generated by the optical components mounted to the cantilever optical bench results in a predominant thermal gradient in the cantilever optical bench extending along a length of the optical bench such that the resultant beam will remain in alignment.

7. The optical bench assembly of claim 6 , wherein the resultant beam remaining in alignment is defined by having an angle misalignment between the optical components of less than 100 μradians.

Assignees

• Bae Sys Inf & Elect Sys Integ

Inventors

• Choiniere Michael J
• Degtiarev Egor V

Classifications

• G02B7/008 Primary

  with means for compensating for changes in temperature or for controlling the temperature; thermal stabilisation · CPC title

• G02B7/181

  with means for compensating for changes in temperature or for controlling the temperature; thermal stabilisation · CPC title

• F21V15/01

  Housings, e.g. material or assembling of housing parts (F21V15/02 takes precedence {housings forming signs or letters G09F13/04}) · CPC title

• F21Y2115/30

  Semiconductor lasers · CPC title

• F21Y2115/10

  Light-emitting diodes [LED] · CPC title