Imaging apparatus for endoscopes

Details Imaging apparatus for endoscopes Imaging apparatus for endoscopes

2006-08-22

2006-08-22

Robinson, Mark A. (Department: 2872)

Optical: systems and elements

Glare or unwanted light reduction

With absorption means

C359S819000, C359S738000

Reexamination Certificate

active

07093945

ABSTRACT:
An imaging apparatus for endoscopes has an objective optical system forming an image of an object and a holding frame retaining the objective optical system. The objective optical system is provided with optical filters which reduce a transmittance in a particular wavelength region of illumination light irradiating the object to 0.1% or less and has a light passage preventing device blocking light passing through a clearance between the outside surfaces of the optical filters and the inside surface of the holding frame retaining the optical filters.

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