Endoscope apparatus with lens for changing the incident angle of

Details Endoscope apparatus with lens for changing the incident angle of Endoscope apparatus with lens for changing the incident angle of

1995-04-19

1998-01-06

Apley, Richard J.

Surgery

Endoscope

With camera or solid state imager

600167, 348 65, 348340, A61B 105

Patent

active

057048967

ABSTRACT:
A solid-state image pickup device has a photosensitive chip and an array of microlenses arranged on the incident side of the photosensitive chip. A correction lens is arranged on the incident side of the microlens array to reduce incident angles of light entering the microlenses. The solid-state image pickup device may be incorporated in a head of an endoscope of an endoscopic apparatus to receive light from an optical system arranged in the head. The head includes a unit for changing paths of light to the microlenses to reduce incident angles of the light entering the microlenses.

REFERENCES:
patent: 4230941 (1980-10-01), Stauffer
patent: 4621897 (1986-11-01), Bonnet
patent: 5081545 (1992-01-01), Sugawara et al.
patent: 5329400 (1994-07-01), Miyano
patent: 5430475 (1995-07-01), Goto et al.
patent: 5499138 (1996-03-01), Iba
"Microlens for Solid-state Image Pickup Element", Abstract of Japanese Patent 6-130306, May 13, 1994.

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