Optomechanical assembly
AssigneeLumentum Operations LLC
InventorAbdul Jaleel K. MOIDU
Life of this patent
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Abstract
A dual enclosure including an inner housing inside an outer housing is provided for an optical bench supporting a plurality of optical elements. An air gap is provided between the inner and outer housings. The inner housing may act as a heat spreader for isothermal operation, and the outer housing may act as a heat insulator. The optical bench may be disposed within the inner housing on a supporting element or elements, which thermally and mechanically decouple the optical bench from the inner housing.
Claims20
An optomechanical assembly comprising:
- an optical bench;
- a plurality of optical components supported by the optical bench;
- an inner heat-spreader housing defining a first inner wall and a first cavity, wherein the inner housing has a heat conductivity of at least 50 W/m·K;
- a support element mechanically coupled to the inner housing, wherein the support element supports the optical bench in the first cavity spaced apart from the first inner wall for decreasing a transfer of mechanical stress and heat from outside the first cavity to the optical bench;
- a thermal element thermally coupled to the inner housing for adjusting temperature thereof;
- an outer heat-insulator housing for defining a second cavity and supporting the inner housing therein so that an air gap is provided in the second cavity between the inner and outer housings, wherein the outer housing has a heat conductivity of 0.4 W/m·K or less.
A method of packaging an optical bench supporting a plurality of optical components, the method comprising:
- (a) providing an inner heat spreader housing having a heat conductivity of at least 50 W/m·K and defining a first inner wall and a first cavity;
- (b) supporting the optical bench within the first cavity spaced apart from the first inner wall by a support element for decreasing a mechanical stress and heat transfer to the optical bench;
- (c) thermally coupling a thermal element to the inner housing for adjusting temperature thereof;
- (d) providing an outer heat insulator housing defining a second cavity;
- and
- (e) supporting the inner housing within the second cavity, so that an air gap is provided in the second cavity between the outer and inner housings, the outer housing having a heat conductivity of no greater than 2 W/m·K.
Dependencies are inferred from the claim text.