Apparatus for recording an image of an object field on a human or animal body
View Patent ↗An apparatus for recording an image of an object field on a body from outside of the body has a shank and an optical unit. The optical unit includes an observation optical unit for recording the image of the object field and is rotatable about an axis of rotation. The observation optical unit has a first stereo channel and a second stereo channel that each has one objective and at least one electronic image recorder. The observation optical unit includes at least one filter that is swivelable into a beam path of the observation optical unit. The at least one filter is swivelable about a swivel axis that is substantially perpendicular to the axis of rotation. At least one filter is swivelable into a beam path of the observation optical unit and into a spatial region arranged laterally with respect to the beam paths of both stereo channels.
1. An apparatus for recording an image of an object field on a body from outside of the body, the apparatus comprising:
a shank; and
an optical unit arranged at a distal end of the shank, the optical unit comprising an observation optical unit for recording the image of the object field and being rotatable about an axis of rotation that is at least substantially parallel to a viewing direction of the observation optical unit,
wherein the observation optical unit has a first stereo channel and a second stereo channel, the first and second stereo channels having an objective and at least one electronic image recorder,
wherein the observation optical unit comprises at least one filter that is swivelable into a beam path of the observation optical unit and swivelable therefrom, and
wherein the at least one filter is swivelable about a swivel axis formed substantially perpendicular to the axis of rotation.
2. The apparatus as claimed in claim 1 , wherein an optical axis of the objective in the first stereo channel and an optical axis of the objective in the second stereo channel lie in a common plane and wherein the swivel axis lies at least substantially in the common plane or in a plane substantially parallel thereto.
3. The apparatus as claimed in claim 1 , wherein the at least one filter comprises a first filter and a second filter, wherein the first filter is swivelable into a beam path of the first stereo channel and swivelable therefrom, and the second filter is swivelable into a beam path of the second stereo channel and swivelable therefrom.
4. The apparatus as claimed in claim 3 , wherein the first filter is swivelable in and out between the objective and the at least one image recorder of the first stereo channel, and the second filter is swivelable in and out between the objective and the at least one image recorder of the second stereo channel.
5. The apparatus as claimed in claim 4 , wherein the first filter and the second filter are arranged on a common swivelable filter carrier.
6. The apparatus as claimed in claim 3 , wherein the first filter and the second filter have substantially the same spectral characteristics.
7. The apparatus as claimed in claim 3 , wherein the first filter and the second filter have different spectral characteristics.
8. The apparatus as claimed in claim 1 , wherein the at least one filter is swivelable via a motor.
9. The apparatus as claimed in claim 1 , wherein the optical unit comprises at least one sensor for detecting a swivel position of the at least one filter.
10. The apparatus as claimed in claim 9 , wherein the at least one sensor is a magnetic sensor and/or a proximity switch.
11. The apparatus as claimed in claim 1 , wherein the observation optical unit comprises a focusing device.
12. The apparatus as claimed in claim 1 , wherein the optical unit comprises a marker light source.
13. The apparatus as claimed in claim 1 , wherein the first stereo channel and the second stereo channel each comprise at least one further electronic image recorder and a beam splitter.
14. The apparatus as claimed in claim 1 , wherein the optical unit has a hermetically sealed embodiment.
15. The apparatus as claimed in claim 1 , wherein the body is a human body or animal body.
16. The apparatus as claimed in claim 1 , further comprising an external housing that is stationarily attached to the distal end of the shank, wherein the optical unit is accommodated inside of the external housing, and wherein the observation optical unit rotates within the external housing about the axis of rotation.
17. The apparatus as claimed in claim 16 , wherein the axis of rotation of the observation optical unit is perpendicular to the axis of the shank.
18. The apparatus as claimed in claim 16 , wherein the optical unit includes a housing and a base plate that closes the housing, wherein the objective and the at least one electronic image recorder of the first and second stereo channels are positioned inside of the housing of the optical unit.
19. The apparatus as claimed in claim 11 , wherein the focusing device includes a carriage and a sliding guide that extends parallel to the axis of rotation of the observation optical unit, wherein the objectives of the first stereo channel and the second stereo channel are attached to the carriage, the carriage being slidable along an axial direction of the sliding guide.
20. An apparatus for recording an image of an object field on a body from outside of the body, the apparatus comprising:
a shank; and
an optical unit arranged at a distal end of the shank, the optical unit comprising an observation optical unit for recording the image of the object field and being rotatable about an axis of rotation that is at least substantially parallel to a viewing direction of the observation optical unit,
wherein the observation optical unit has a first stereo channel and a second stereo channel, the first and second stereo channels having an objective and at least one electronic image recorder,
wherein the observation optical unit comprises at least one filter that is swivelable into a beam path of the observation optical unit and swivelable therefrom, and
wherein the at least one filter includes a first filter and a second filter that are each simultaneously swivelable into a beam path of the observation optical unit and swivelable therefrom into a spatial region arranged laterally with respect to the beam paths of both the first and second stereo channels.
21. The apparatus as claimed in claim 20 , wherein the first filter is attached to a first filter shaft, the first filter shaft being swivelable about a first swivel axis and the second filter is attached to a second filter shaft, the second filter shaft being swivelable about a second swivel axis,
wherein the first swivel axis is aligned with the axis of rotation of the observation optical unit and the second swivel axis is substantially parallel to the first swivel axis, and
wherein a gear provided on the first filter shaft engages with a gear provided on the second filter shaft, such that rotation of the first filter shaft causes rotation of the second filter shaft.