Imaging optical system for compensating change of temperature

Details Imaging optical system for compensating change of temperature Imaging optical system for compensating change of temperature

1992-11-12

1995-05-02

Ben, Loha

Optical: systems and elements

Lens

With support

359206, 359503, G02B 702, G02B 2608

Patent

active

054125103

ABSTRACT:
An imaging optical system for compensating for changes of temperature according to the present invention corrects a focal point for an entire optical system due to temperature change by changing a relative distance between a lens and a light receiving element. To this end, a correcting member, which expands and contracts due to temperature change, is disposed between the lens and the light receiving element. Moreover, the coefficient of thermal expansion is set to such a value so as to be able to substantially correct for the focal point change. According to another aspect of the present invention, the optical system includes a lens system which has at least a positive lens and a negative lens in order to offset the effect of the temperature change.

REFERENCES:
patent: 2537900 (1951-01-01), Lee et al.
patent: 4190325 (1980-02-01), Moreno
patent: 4236790 (1980-12-01), Smith
patent: 4609945 (1986-09-01), Oguino
patent: 4693555 (1987-09-01), Arai et al.
patent: 4720168 (1988-01-01), Kaneko
patent: 4721373 (1988-01-01), Sugiyama
patent: 4753524 (1988-06-01), Sugiyama
patent: 4815059 (1989-03-01), Nakayama et al.
patent: 4855987 (1989-08-01), Versluis
patent: 5196957 (1993-03-01), Brueggeman
patent: 5210650 (1993-05-01), O'Brien et al.
Translation Of Japanese Patent Document 61-34644.

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