Athermalized optical head

Details Athermalized optical head Athermalized optical head

1988-08-30

1990-08-14

Sikes, William L.

Coherent light generators

Particular component circuitry

Optical pumping

350 9618, 372108, G02B 636, G02B 726

Patent

active

049482211

ABSTRACT:
A athermalized optical head is disclosed which comprises a light source such as a laser diode and an optical element, for example, a collimating lens. The collimating lens and the laser diode are mounted along a common optical axis. A thermoelectric cooling element is provided in the head to control the temperature of the laser diode. In order to maintain a spot produced by the head in focus during changes in ambient temperature, the laser diode and the lens are mounted such that the distance between the diode and the lens is maintained constant over a predetermined temperature range.

REFERENCES:
patent: 4295152 (1981-10-01), Khoe et al.
patent: 4403235 (1983-09-01), Fedder et al.
patent: 4604753 (1986-08-01), Sawai
patent: 4631728 (1986-12-01), Simons
patent: 4683573 (1987-07-01), Albanese

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