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US3610764A Expired / Lapsed US ⏱️ 0.0 years remaining

Automatic leveling telescope including a reversible two-sided pendulum mirror and a focusing prism

Assignee: Jenoptik AG
•
Filing: 1970-08-27
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Granted: 1971-10-05
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Expires: 1990-08-27
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Abstract

Abstract A telescope having an optical axis comprising a housing with a light entrance aperture having a geometrical axis, an objective mounted in the aperture, the optical axis of the objective being parallel to the geometrical axis, a set of two prisms disposed in the housing near the objective, the objective and one of the prisms being jointly movable in a direction at a right angle to the optical axis, a collimating mark disposed on the one prism and movable therewith, focusing means comprising a rectangular prism mounted in the housing at an end thereof remote from the aperture, with the hypotenuse surface facing the objective, the rectangular prism being displaceable along the optical axis to focus on the collimating mark imaging rays traversing the objective, a pendulum mirror disposed in the housing in the path of imaging rays deflected by the rectangular prism, the mirror having a silvered surface in front and in the rear and being suspended for oscillation, said mirror being rotatable between a first and a second position about an axis of rotation substantially at a right angle to the optical axis for automatically leveling the sighting of the telescope, rotating means for rotating the mirror between the first and the second position, damping means for damping the oscillation of the mirror, one of the silvered surfaces cooperating with the objective when the mirror is in the first position and the other of the silvered surfaces cooperating with the objective when the mirror is in the second position, an eyepiece mounted on one end of the housing remote from the aperture for viewing the collimating mark, the one prism of the set of prisms deviating the collimary ray in the telescope at a right angle to the optical axis of the objective, the other of the set of prisms deviating the collimary ray to be parallel with the optical axis of the eyepiece, and lens means located between the other of the set of prisms and the eyepiece for producing an intermediate image.

Inventors

  • 👤 Gerhard Huther

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 23:46
CPC Classifications
G; G01; G01C; G01C5/00

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 348 words
A telescope having an optical axis comprising a housing with a light entrance aperture having a geometrical axis, an objective mounted in said aperture, the optical axis of said objective being parallel to said geometrical axis, a set of two prisms disposed in said housing near said objective, said objective and one of said prisms being mounted for joint movement in a direction at a right angle to said optical axis, a collimating mark disposed on said one prism and movable therewith, focusing means comprising a rectangular prism movably mounted in said housing at an end thereof remote from said aperture, with the hypotenuse surface facing said objective, said rectangular prism being displaceable along said optical axis to focus on said collimating mark imaging rays traversing said objective, a pendulum mirror disposed in said housing in the path of imaging rays deflected by said rectangular prism, said mirror having a silvered surface in front and in the rear and being suspended for oscillation, said mirror being rotatable between a first and a second position about an axis of rotation substantially at a right angle to said optical axis for automatically leveling the sighting line of the telescope, rotating means for rotating said mirror between said first and said second position, damping means for damping the oscillation of said mirror, one of said silvered surfaces cooperating with said objective when said mirror is in said first position and the other of said silvered surfaces cooperating with said objective when said mirror is in said second position, an eyepiece mounted on one end of said housing remote from said aperture for viewing said collimating mark, said one of the prisms of said set of prisms deviating the image and collimating mark rays in the telescope at a right angle to the optical axis of the objective, the other of said set of prisms deviating the image and collimating mark rays to be parallel with the optical axis of said eyepiece, and lens means located between the other of said set of prisms and said eyepiece for producing an intermediate image.
Claim 2
Dependent Claim 348 words
A telescope having an optical axis comprising a housing with a light entrance aperture having a geometrical axis, an objective mounted in said aperture, the optical axis of said objective being parallel to said geometrical axis, a set of two prisms disposed in said housing near said objective, said objective and one of said prisms being mounted for joint movement in a direction at a right angle to said optical axis, a collimating mark disposed on said one prism and movable therewith, focusing means comprising a rectangular prism movably mounted in said housing at an end thereof remote from said aperture, with the hypotenuse surface facing said objective, said rectangular prism being displaceable along said optical axis to focus on said collimating mark imaging rays traversing said objective, a pendulum mirror disposed in said housing in the path of imaging rays deflected by said rectangular prism, said mirror having a silvered surface in front and in the rear and being suspended for oscillation, said mirror being rotatable between a first and a second position about an axis of rotation substantially at a right angle to said optical axis for automatically leveling the sighting line of the telescope, rotating means for rotating said mirror between said first and said second position, damping means for damping the oscillation of said mirror, one of said silvered surfaces cooperating with said objective when said mirror is in said first position and the other of said silvered surfaces cooperating with said objective when said mirror is in said second position, an eyepiece mounted on one end of said housing remote from said aperture for viewing said collimating mark, said one of the prisms of said set of prisms deviating the image and collimating mark rays in the telescope at a right angle to the optical axis of the objective, the other of said set of prisms deviating the image and collimating mark rays to be parallel with the optical axis of said eyepiece, and lens means located between the other of said set of prisms and said eyepiece for producing an intermediate image.
Claim 3
Dependent Claim 26 words
A telescope as set forth in claim 1, also comprising externally operable control means for controlling the movement of said rectangular prism along said optical axis.

References Cited (Backward Citations)

FR355230A Cited
US2189766A Cited
US2638032A Cited
US2907246A Cited
US3059520A Cited
US2978950A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-10-04 1975-04-05 1975-10-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-10-04 1979-04-05 1979-10-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-10-04 1983-04-05 1983-10-05 $7700.00 Window Closed / Lapsed

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