VIDEO ENDOSCOPIC DEVICE

摘要

A video endoscopic device has a camera head and two parallel optical arrangements, each with optical components, arranged coaxially with one another along a common first optical axis of the optical components of a respective optical arrangement and in the interior of an endoscope shaft. The optical components transmit an optical image from a distal end of the respective optical arrangement to a proximal end of the respective optical arrangement. The camera head contains at least one image sensor comprising a recording plane and at least two projection objectives, each having a second optical axis and arranged to project an image onto the image sensor. The optical arrangements comprise a collimating optical unit for generating an at least approximately parallel beam path at the outlet of the respective optical arrangement. The respective collimating optical unit has a third optical axis arranged coaxially with the optical components of the optical arrangements.

主权项

1. A video endoscopic device comprising
two parallel optical arrangements, which, together, are arranged at least in part in the interior of an endoscope shaft and each comprise optical components, arranged coaxially with one another along a common first optical axis of the optical components of a respective optical arrangement, each optical arrangement being configured to transmit an optical image from a distal end of the respective optical arrangement to a proximal end of the respective optical arrangement, said video endoscopic device further comprising a camera head, which is arranged adjacent to or adjoining the proximal ends of the optical arrangements and which comprises: at least one image sensor having at least one recording plane, said camera head further comprising at least two projection objectives, of which each one has a second optical axis and is arranged and configured to project an image onto the image sensor,wherein the optical arrangements each comprise a collimating optical unit, arranged at the respective proximal end thereof, for generating an at least approximately parallel beam path at the outlet of the respective optical arrangement,wherein the respective collimating optical unit has a third optical axis that is arranged coaxially with the optical components of the optical arrangements or laterally offset by at most half a diameter of the collimating optical unit from the common first optical axis of the optical components of the optical arrangements, and each one of the at least two projection objectives is arranged and configured to image the parallel beam path, generated by a respective collimating optical unit, on at least one focus in the at least one recording plane of the at least one image sensor andwherein at least one of the projection objectives is arranged so that the respective second optical axis has a lateral distance, measuring at most half a diameter of the projection objective, from the third optical axis of the collimating optical unit which generates the parallel beam path, the at least one projection objective being arranged and configured for imaging said parallel beam path on the at least one focus, as a result of which the parallel beam path enters the at least one projection objective with a lateral distance from the second optical axis of the at least one projection objective.