Automatic focusing device for microscopes

Details Automatic focusing device for microscopes Automatic focusing device for microscopes

1980-10-31

1982-12-21

Corbin, John K.

350255, 350521, G02B 711

Patent

active

043646301

ABSTRACT:
An automatic focusing device for microscopes comprising nozzles arranged around the individual objective lenses, a gas feed pipe attached to the arm or the similar member of the microscope, and a coupler arranged in or near the objective lens switching device and used for connecting said gas feed tube to said nozzle, said automatic focusing device being adapted in such a manner that when objective lenses are switched from one to another to be used for microscopy by rotating said objective lens switching device, the nozzle arranged around the objective lens to be used for microscopy is connected to said gas feed tube, whereby the gas supplied through said gas feed tube passes through said coupler and is injected from said nozzle for focusing the objective lens to be used for microscopy.

REFERENCES:
patent: 3519334 (1970-07-01), Heitmann et al.
patent: 3984678 (1976-10-01), Uchiyama et al.
patent: 4030815 (1977-06-01), Andrevski et al.
patent: 4153341 (1979-05-01), Kawamura et al.
Figler, "Precision Focus Control," Proc. Soc. Photo-Optical Instru. Engrs., SPIE, vol. 141, pp. 43-44, 1978.

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