Microscope having an illumination optical system which is...

Details Microscope having an illumination optical system which is... Microscope having an illumination optical system which is...

2005-11-22

2005-11-22

Robinson, Mark A. (Department: 2872)

Optical: systems and elements

Compound lens system

Microscope

C359S383000, C359S390000

Reexamination Certificate

active

06967773

ABSTRACT:
A microscope is provided which includes a frame which supports a stage that is adapted to have a specimen placed thereon, an arm provided on the frame to support an objective lens, an observation optical system provided on the arm, and an illumination optical system which includes a light source for illuminating the specimen and which is integrated with the frame. A fastening mechanism fastens the arm and the frame together via at least one spacer, which is provided between the arm and the frame. The spacer has a coefficient of thermal expansion that is different from the coefficient of thermal expansion of the arm. When a temperature of the frame rises due to operation of the light source, the objective lens is moved toward the stage due to the difference in coefficients of thermal expansion between the spacer and the arm.

REFERENCES:
patent: 1960554 (1934-05-01), Siedentopt
patent: 3576438 (1971-04-01), Pease
patent: 4619503 (1986-10-01), Reinheimer et al.
patent: 4733954 (1988-03-01), Reinheimer et al.
patent: 5585964 (1996-12-01), Schalz
patent: 5703715 (1997-12-01), Gaul
patent: 5757542 (1998-05-01), Brock
patent: 55-24566 (1980-06-01), None
patent: 1-183423 (1989-07-01), None
patent: 9-120030 (1997-05-01), None
patent: 10-142508 (1998-05-01), None

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