Surgery – Truss – Pad
Patent
1979-12-20
1982-01-12
Hix, L. T.
Surgery
Truss
Pad
354 34, 354 62, 128 6, G03B 1503, G03B 2900, A61B 104, A61B 106
Patent
active
043102280
ABSTRACT:
A photographing apparatus for an endoscope, which comprises an endoscope body (10) including an obervational optical system (12.sub.1) and a fiber light guide (14), a light source unit (46) including a light source section (21) for providing light to the fiber light guide (14) and a camera (32) mounted on a light path, through which an optical image led out through the observational optical system (12.sub.1) proceeds.
The camera (32) includes a photoelectric converter (34) disposed on the afore-mentioned light path of the optical image for producing a brightness signal (E10) corresponding to the brightness of said optical image and a transmitter (36) receiving the brightness signal (E10) from the photoelectric converter (34) and producing a transmission signal (E20) corresponding to the brightness signal (E10).
The light source unit (46) includes a receiver (42) receiving the transmission signal (E20) and producing a feedback signal (E30) corresponding to the brightness signal (E10) and a light source section control device (44) for controlling the light source section (21) according to the feedback signal (E30) for controlling the quantity of light provided from said light source section (21) to said fiber light guide (14).
In the photographing apparatus of the above construction, the camera (32) and light source device (46) are coupled together by transmission signal or electromagnetic wave (E20) without need of any electric contact.
REFERENCES:
patent: 3307107 (1967-02-01), Kagan
patent: 4153356 (1979-05-01), Hama
Hix L. T,.
Olympus Optical Co,. Ltd.
Perkey William B.
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