Objective for endoscopes and process for its production

Details Objective for endoscopes and process for its production Objective for endoscopes and process for its production

1987-11-20

1989-03-28

Corbin, John K.

350286, 350417, G02B 1700, G02B 2326

Patent

active

048158330

ABSTRACT:
An objective for endoscopes with a lateral objective lens comprises an elongated prism having a convex proximal end surface and a distal end on which are joined by cementing after alignment on an optical axis, a diaphragm, a negative lens and optionally a wedge-shaped support, to form an indissoluble unit. The lens, the diaphragm and the support if present are provided with sections protruding radially beyond a desired periphery of the objective, which sections are ground off together to the dimension of the prism circumference, so that a rod-shaped objective unit is formed.

REFERENCES:
patent: 4684224 (1987-08-01), Yamashita et al.

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