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Optical system for solar telescope

A solar telescope and optical system technology, applied in the field of precision optical testing, can solve the problems of field signal stray light flooding, high-resolution observation task failure, etc., and achieve the effect of high-resolution observation

Inactive Publication Date: 2016-05-25
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI +1
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Problems solved by technology

[0008] In order to solve the technical problems existing in the background technology, the present invention proposes an optical system of a solar telescope, which adopts a reflective arc-shaped field diaphragm to solve the problem that a large amount of heat gathers in the field diaphragm, causing the field signal to be affected by stray light. Submerged, resulting in the failure of high-resolution observation missions

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Embodiment Construction

[0043] In order to solve the problem of sun stray light incident on the field diaphragm of the solar telescope, the incident light reflected to the thermal diaphragm is absorbed and causes deformation and position changes of the thermal diaphragm and the field diaphragm, resulting in high resolution of the optical system of the solar telescope. The problem of rate observation task failure. The present invention proposes an optical system of a solar telescope, comprising a main mirror 5, a thermal stop 4, a field stop 3, a collimator lens 6, a receiving lens 2 and an image plane 1, and the improvements are: field light The diaphragm is 3 arc-shaped, and the surface of the field diaphragm 3 facing the incident light is coated with a reflective film; the radius of curvature of the field diaphragm 3 is R.

[0044] The following is attached figure 2 to attach Figure 6 The calculation process of the radius of curvature R is described:

[0045] 1) if figure 2 As shown, determi...

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Abstract

The invention belongs to the optical precision test technology field and particularly relates to an optical system for a solar telescope. The system comprises a main mirror, a heat diaphragm, a field diaphragm, a collimation lens, a reception lens and an image plane. The system is characterized in that the field diaphragm is an arc-shaped structure, the surface of the field diaphragm facing the incidence light is coated with a reflection film, and a problem that failure of high-resolution task observation caused by influence of stray light flooding on field signals because of great heat accumulated on the field diaphragm is solved.

Description

technical field [0001] The invention belongs to the technical field of precision optical testing, and in particular relates to an optical system of a solar telescope. technical background [0002] The effective field of view of the solar telescope for high-resolution observation of the sun generally does not exceed 5', and the light radiation in the solar area outside the effective field of view will enter the solar telescope lens barrel through the entrance of the telescope lens barrel, and this part of the energy is also in the telescope Internally transmitted and imaged, absorbed and scattered, it is both a strong heat source and a strong stray light source. For ordinary space telescopes and ground-based telescopes, the sun is also a heat source and stray light source, but the sun is not allowed to enter the telescope tube directly during mission observation, and measures such as hoods are generally used to suppress it. [0003] Since the solar telescope images the effec...

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Application Information

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IPC IPC(8): G02B23/02
CPCG02B23/02
Inventor 贺应红李福马小龙吕娟薛彬杨建峰王森姜爱明闫兴涛徐广州于基睿赵意意
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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