Pancratic system

Details Pancratic system Pancratic system

1998-03-10

1999-10-26

Sugarman, Scott J.

Optical: systems and elements

Lens

With support

359822, G02B 702

Patent

active

059738618

ABSTRACT:
The invention is directed to a pancratic system in an optical apparatus having a guide tube wherein at least one lens is moved in the guide tube. At least two guide rails are provided between the lens and the guide tube for guiding the lens. The surfaces of the intermediate spaces between the guide rails are configured so as to be poorly reflective and the space between the guide rails is also configured so as to be poorly reflecting.

REFERENCES:
patent: 3441339 (1969-04-01), Rederer et al.
patent: 4322150 (1982-03-01), Kamata et al.
patent: 4448496 (1984-05-01), Isobe et al.

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