Light source device for endoscopes

Details Light source device for endoscopes Light source device for endoscopes

1997-05-14

1999-10-26

Sember, Thomas M.

Illumination

Light fiber, rod, or pipe

Medical

362268, 362572, 600178, F21V 704, F21V 800

Patent

active

059715766

ABSTRACT:
A light source device for endoscopes includes a light source; a condenser lens unit for collecting light beams from the light source; a light guide for receiving the light beams collected through the condenser lens unit into its entrance end face to transmit them to its exit end face; and a reflecting mirror located on the opposite side of the condenser lens unit with respect to the light source. The light source device is designed so that a position where the light beams emitted from the light source are collected directly through the condenser lens unit does not coincide with a position where the light beams emitted from the light source and reflected back to the light source by the reflecting mirror are collected through the condenser lens unit.

REFERENCES:
patent: 4953937 (1990-09-01), Kikuchi et al.
patent: 5143435 (1992-09-01), Kikuchi
patent: 5509095 (1996-04-01), Baker et al.
patent: 5560699 (1996-10-01), Davenport et al.
patent: 5707131 (1998-01-01), Li
patent: 5746494 (1998-05-01), Koeda et al.

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