Optical magnification device for distance variation

Details Optical magnification device for distance variation Optical magnification device for distance variation

2007-08-07

2007-08-07

Robinson, Mark A. (Department: 2872)

Optical: systems and elements

Compound lens system

Microscope

C359S380000, C359S678000, C359S721000

Reexamination Certificate

active

11380105

ABSTRACT:
An optical magnification device for varying the distance between an observer's eye (1) and an object (7), e.g., for a binocular magnifier or a microscope, in which focusing onto the object (7) is accomplished by means of progressive lenses (3) displaceable perpendicular to the observation beam(s) (2).

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Sigma Corporation (Tokyo, Japan), “Sigma Objektiv Katalog”, publication date unknown.
Carl Zeiss AG (Germany), “Zeiss Brillengläser 1985” [Zeiss Eyeglasses 1985], Doc. No. 20-955-d, Jan. 1985.

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