Camera module for endoscope

A camera module consists of an image sensor, an objective lens system, and a lens drive mechanism. The objective lens system includes a taking lens and a prism having a reflection surface inclined at an angle of 45 DEG to an optical axis of the taking lens, to reflect incident light toward the image...

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Bibliographic Details
Main Author YAMAMOTO GOKI
Format Patent
LanguageChinese
English
Published 17.10.2012
Subjects
ACCESSORIES THEREFOR
APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES
APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM
CINEMATOGRAPHY
DIAGNOSIS
ELECTROGRAPHY
HOLOGRAPHY
HUMAN NECESSITIES
HYGIENE
IDENTIFICATION
MEDICAL OR VETERINARY SCIENCE
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHOTOGRAPHY
PHYSICS
SURGERY
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Summary:A camera module consists of an image sensor, an objective lens system, and a lens drive mechanism. The objective lens system includes a taking lens and a prism having a reflection surface inclined at an angle of 45 DEG to an optical axis of the taking lens, to reflect incident light toward the image sensor on a circuit board, which is positioned in parallel to the optical axis of the taking lens. The lens drive mechanism includes a motor and a rotary shaft driven by the motor. The motor is positioned behind the prism, and a drive shaft of the motor is coupled to the rotary shaft through a power transmission mechanism. The rotary shaft is positioned on one radial side of the taking lens and is coupled to a movable lens element of the taking lens such that the movable lens element is moved in the axial direction by rotary motion of the rotary shaft.
Bibliography:Application Number: CN2012199952