Endoscope or borescope stereo viewing system
First Claim
1. Stereoscopic imaging and viewing system for borescope or endoscope, comprising a miniature camera assembly that includes an imager having an image plane, a focusing lens assembly of a predetermined diameter and an effective aperture on the order of about f/2 or wider for focusing, at a location on an optic axis of the lens assembly, and on the image plane of said imager an image of a three-dimensional target in the viewing field of said camera assembly said imager being fixed against transverse movement with respect to said optic axis;
- an aperture plate interposed in the optical path of said camera assembly adjacent said lens assembly, having left and right pupils therein situated on opposite sides of the optic axis of said lens assembly and separated from one another by a predetermined pupil distance less than said lens assembly diameter, such that a left image passes through the left pupil and is focussed on the imager by a corresponding portion of said lens assembly on said image plane and a right image passes through the right pupil and is focussed on the imager by a corresponding portion of said lens assembly on said image plane; and
selective means for alternately admitting light through said pupils and forming said left image and said right image on said imager alternately to produce distinguishable left-eye and right-eye views of the target; and
viewing means coupled to said imager to receive the left and right images therefrom and visually display said left-eye and right-eye views of the target to produce a stereoscopic view of said three-dimensional target.
1 Assignment
0 Petitions
Accused Products
Abstract
A stereo imaging and viewing system for a borescope or endoscope employs a miniature camera assembly in which are disposed a CCD imager or equivalent imager, a wide-angle focusing lens assembly with an effective aperture on the order of about f/2 or wider, and an aperture plate interposed in the optical path of the camera and adjacent the lens assembly. The aperture plate has left and right pupils therein situated on opposite sides of the optic axis of the lens assembly. The pupils are separated from one another by a predetermined pupil distance that is somewhat smaller than the lens diameter. The left image passes through the left pupil and is focused through a corresponding portion of the lens assembly onto the image plane of the imager and a right image passes through the right pupil and is focused by a corresponding portion of the lens assembly onto the image plane of the imager. A selective mechanism, such as alternate shutters or distinct color filters, separate the left and right views of the target sequentially. Left and right views are then presented to a display device for viewing the left and right views stereoscopically.
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Citations
7 Claims
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1. Stereoscopic imaging and viewing system for borescope or endoscope, comprising a miniature camera assembly that includes an imager having an image plane, a focusing lens assembly of a predetermined diameter and an effective aperture on the order of about f/2 or wider for focusing, at a location on an optic axis of the lens assembly, and on the image plane of said imager an image of a three-dimensional target in the viewing field of said camera assembly said imager being fixed against transverse movement with respect to said optic axis;
- an aperture plate interposed in the optical path of said camera assembly adjacent said lens assembly, having left and right pupils therein situated on opposite sides of the optic axis of said lens assembly and separated from one another by a predetermined pupil distance less than said lens assembly diameter, such that a left image passes through the left pupil and is focussed on the imager by a corresponding portion of said lens assembly on said image plane and a right image passes through the right pupil and is focussed on the imager by a corresponding portion of said lens assembly on said image plane; and
selective means for alternately admitting light through said pupils and forming said left image and said right image on said imager alternately to produce distinguishable left-eye and right-eye views of the target; and
viewing means coupled to said imager to receive the left and right images therefrom and visually display said left-eye and right-eye views of the target to produce a stereoscopic view of said three-dimensional target. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- an aperture plate interposed in the optical path of said camera assembly adjacent said lens assembly, having left and right pupils therein situated on opposite sides of the optic axis of said lens assembly and separated from one another by a predetermined pupil distance less than said lens assembly diameter, such that a left image passes through the left pupil and is focussed on the imager by a corresponding portion of said lens assembly on said image plane and a right image passes through the right pupil and is focussed on the imager by a corresponding portion of said lens assembly on said image plane; and
Specification