Optical device for endoscope

Details Optical device for endoscope Optical device for endoscope

A - Human Necessities

61

B

A61B 1/00 (2006.01)

Patent

CA 2488341

An optical device for viewing an object at a range of working distances. The device comprises a slender tube of a certain length and having a distal end and a proximal end. The device further comprises an imaging system disposed at the distal end and having a wide viewing angle. The device also comprises a telescopic system associated with the proximal end and having a narrow viewing angle. The imaging system is designed to form an image of the object at an image plane located on the device's optical axis and within the tube closer to the distal end than to the proximal end. The telescopic system is designed to enable viewing of the image of the object. The device is especially adapted to function as an endoscope in medical applications and may be disposable.

L'invention concerne un dispositif optique permettant de visualiser un objet au niveau d'une plage de distances de travail. Ledit dispositif comprend un tube effilé d'une certaine longueur doté d'une extrémité distale et d'une extrémité proximale, un système d'imagerie disposé au niveau de ladite extrémité distale et présentant un angle de visualisation large et un système télescopique associé à l'extrémité proximale et présentant un angle de visualisation étroit. Le système d'imagerie est conçu afin de former une image de l'objet au niveau d'un plan d'image situé sur l'axe optique du dispositif et dans le tube plus proche de l'extrémité distale que de l'extrémité proximale. Le système télescopique est conçu afin de permettre la visualisation de l'image de l'objet. Ce dispositif est spécialement adapté pour fonctionner comme un endoscope dans des applications médicales et peut être jetable.

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