Optical microscope viewing head with high and low magnification

Details Optical microscope viewing head with high and low magnification Optical microscope viewing head with high and low magnification

1984-03-19

1985-10-01

Punter, William H.

350529, G02B 704, G02B 718, G02B 2126

Patent

active

045442444

ABSTRACT:
There is disclosed an optical microscope which comprises an adjustable mounting stage on which a specimen can be located, and a viewing head having an eyepiece, and a high magnification viewing system which is focussable on the specimen, after appropriate adjustment of the mounting stage, to enable the specimen to be viewed via the eyepiece. To provide improved positioning of a specimen so that predetermined areas thereof can be more readily located in the field of view of the microscope, the adjustable mounting stage has first and second mounting locations which are spaced apart by a predetermined distance and which serve to mount respectively a first specimen and a second replica or reference specimen, the second specimen bearing at least one predetermined reference point, line, grid, area or the like. The microscope has a viewing head provided with a high magnification viewing system positioned to view the first mounting location and a low magnification system positioned to view the second mounting location. Adjustable optical means is provided on the viewing head which is adjustable between a first position in which the microscope eyepiece can be used to view the first mounting location via the high magnification viewing system and a second position in which the eyepiece can be used to view the second mounting location via the low magnification viewing system.

REFERENCES:
patent: 3600057 (1971-08-01), Leffler
patent: 3851972 (1974-12-01), Smith et al.
patent: 4061914 (1977-12-01), Green
Betts et al., "Manual Programmable X-Y Positioner" IBM Tech. Disc. Bull., 2-1976, p. 2863.

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