Compact optical lens barrel mechanism

Details Compact optical lens barrel mechanism Compact optical lens barrel mechanism

1977-08-30

1979-05-15

Corbin, John K.

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

250188, G02B 500

Patent

active

041545117

ABSTRACT:
A compact optical lens barrel mechanism for relativenonrotational displacement of a series of lens elements forming an optical system is provided. Lens elements can be mounted for selective subdivision into operative lens groups for both focusing and introducing a variable soft focus condition. The barrel mechanism includes a mounting cylinder having appropriate linear alignment elements. A translational cylinder is rotatively journalled within the mounting cylinder. Three lens mounting members can be relatively movable and are designed to each carry a predetermined number of lens elements. The rear lens mounting member can be moved by the translational cylinder to provide a variable amount of spherical aberration to produce a soft focus condition. An exterior focusing ring and a soft focus condition ring can be rotatively mounted relative to the stationary mounting cylinder for linearly moving the respective mounting members.

REFERENCES:
patent: 1463132 (1923-07-01), Graf
patent: 3455628 (1969-07-01), Back
patent: 3827779 (1974-08-01), Hapke et al.
patent: 3850507 (1974-11-01), Vesugi
patent: 3904275 (1975-09-01), Noguchi et al.
patent: 4124276 (1978-11-01), OKano et al.

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