Telescope, primary mirror assembly, and primary mirror support mechanism with rotation prevention function

Abstract

The invention discloses a telescope primary mirror support mechanism with a rotation prevention function. A primary mirror central spindle spherical outer surface and a telescope primary mirror central hole cylindrical surface form clearance fit, thereby limiting the two-dimensional translation of the primary mirror in a horizontal direction. Three groups of bottom support assemblies employ flexible structures, thereby limiting the translation of the primary mirror in a vertical direction and the two-dimensional inclination in a horizontal direction. The support mechanism is additionally provided with a rotation prevention assembly, thereby limiting the rotation of the primary mirror in a vertical direction. Two sides of a rotation prevention flexible rod are fixed on the upper plane of aprimary mirror support bottom plate, and a central part is pasted to the lower plane of a bottom support adhesive seat through an optical structural adhesive. The rotation prevention assembly does notmake direct contact with the primary mirror, so the impact on the shape of the primary mirror from an installation stress and a gluing stress can be reduced. The flexible link in the support mechanism can avoid the mutual stress interference of all links. The support mechanism is correct in principles, and a mechanical part is easy to machine. The assembly is easy to implement, and the support mechanism is suitable for the support field of the primary mirror of a reflection-type tracking capturing telescope. The invention also discloses a telescope employing the above support mechanism and aprimary mirror assembly of the telescope.

Description

technical field [0001] The invention relates to the technical field of optical instruments, in particular to a supporting mechanism for a main mirror of a telescope with an anti-rotation design. Background technique [0002] Reflective tracking and capturing telescope lenses, the clear aperture is generally 300mm ~ 600mm, in order to ensure a stable and clear observation image effect, the surface accuracy of the optical components inside the telescope plays a vital role, because the main mirror of the telescope is The largest optical component in the system, so its surface shape accuracy is the most important to the system imaging quality. A reasonable support structure will produce good surface shape accuracy, so it is necessary to carry out in-depth research on the support structure of the telescope's primary mirror. [0003] The main mirror of the traditional reflective telescope is supported by a separate mandrel. The mandrel is responsible for the radial positioning of...

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