Method and apparatus for autofocusing a microscope

Details Method and apparatus for autofocusing a microscope Method and apparatus for autofocusing a microscope

1985-02-14

1987-06-30

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

250204, G01J 120

Patent

active

046772863

ABSTRACT:
An autofocusing microscope includes a spot marker assembly for projecting a spot marker on the sample surface. The image of the spot marker is continuously scanned while the objective lens is moved along a preselected range of distances from said sample surface. The lens is then moved to the optimum focusing in accordance with the scanning.

REFERENCES:
patent: 3721827 (1973-03-01), Reinheimer
patent: 4025785 (1977-05-01), Mueller
patent: 4429968 (1984-02-01), Taka et al.
patent: 4447717 (1984-05-01), Nohda
patent: 4564296 (1986-01-01), Oshida et al.

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