Microscope photometer tube

Details Microscope photometer tube Microscope photometer tube

1988-10-21

1989-12-26

McGraw, Vincent P.

Optics: measuring and testing

For light transmission or absorption

350442, 350444, 350446, 350511, 356219, 356225, G02B 2118, G01N 2159

Patent

active

048894265

ABSTRACT:
A photometer tube for microscopes is provided with a device by means of which the measurement field diaphragm of the photometer is superimposed on the intermediate image of the object in the binocular tube. For the reflecting-back of the measurement field diaphragm, which is illuminated from the rear, into the binocular tube, the residual reflection of an uncoated glass-air interface in the ray path between the objective and the beam divider of the microscope is utilized. This surface may be one of the surfaces of the tube lens systems of the microscope.

REFERENCES:
patent: 3387283 (1975-06-01), Merstallinger et al.
patent: 3421806 (1969-01-01), Weber
patent: 4712889 (1987-12-01), Schindl

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