Reflecting mirror supporting structure
A mirror support and mirror technology, applied in the field of applied optics, can solve problems such as poor thermal shock and mechanical shock capability, high damping of mirror components, weakening thermal shock effects, etc., to achieve low cost, improved structural damping, light weight effect
Pending Publication Date: 2021-12-28
CHANGCHUN UNIV OF TECH
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Problems solved by technology
[0003] Most of the existing mirror support structures are installed on the mirror backplane in two ways: one uses optical epoxy glue to bond the mirror to the mechanical parts, and the thickness of the bonding is about 0.02mm. The reflection formed by this method The mirror assembly has high rigidity and small damping, and can well maintain the posture of the mirror relative to the mirror backplane, but due to the small structural damping, the ability to resist thermal shock and mechanical shock is poor; another way is to use Silicone rubber fills the gap between the reflector and the reflector back plate. The size of the gap is on the order of millimeters, with a typical value of 3mm. The damping of the reflector assembly formed by this method is high, which can well weaken the thermal shock and mechanical shock. However, since silicone rubber is a non-metallic material, it is difficult to maintain the pose of the mirror relative to the mirror backplane with high precision after being subjected to a mechanical environment. application
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[0019] Specific implementation examples
[0020] to combine Figure 1 to Figure 4 This embodiment is described, which is applicable to the support structure of the space camera mirror, including the mirror (1), the fiber bundle (2), the silicone rubber bonding block (3) and the mirror back plate (4);
[0021] The reflector (1) has a diameter of 100 mm and a thickness of 16 mm; the reflector adopts a peripheral support structure, and the reflector back plate (4) is a ring with an outer diameter of 118 mm, an inner diameter of 106 mm, and a thickness of 15 mm. The gap between them is 3mm;
[0022] The reflector and fiber bundle are made of quartz, and the back plate of the reflector is made of Invar.
[0023] The reflector back plate (4) reflector (1) is fixed with a fixture, and the position is adjusted to make the centerlines of the two coaxial, and constraints are applied to fix it; 6 blind holes with a diameter of 3mm are evenly distributed around the reflector for Bondin...
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The invention relates to a reflecting mirror supporting structure. According to the reflecting mirror supporting structure, a reflecting mirror is connected with a reflecting mirror back plate by using a fiber bundle consistent with a reflecting mirror substrate material, a pre-tightening force is applied to the fiber bundle, the reflecting mirror is limited, the space between the reflecting mirror and the reflecting mirror back plate is filled with silicon rubber, and impact resistance of the reflecting mirror is achieved. According to the reflecting mirror supporting structure, the problem that an existing reflecting mirror supporting structure cannot be stable and resistant to impact at the same time in a mechanical environment is solved, and the reflecting mirror structure has the advantages of being stable and resistant to impact.
Description
technical field [0001] The invention belongs to the technical field of applied optics, and in particular relates to a support structure for a reflective mirror with stable structure and impact resistance. Background technique [0002] Mirrors are the core components of high-precision optical instruments. Because the mirrors carry high-precision mirror surfaces, they have high requirements on the surface shape of the mirror (nm order), so the mirror substrates are usually made of optical glass, SiC, etc. material, but the mechanical connection performance of optical glass and SiC material is poor, the reflector needs to be installed on the reflector back plate of metal material to form a reflector assembly, and then installed on the rack. At the same time, the optical backplane needs a certain structural design to reduce the influence of the thermal environment on the surface shape of the mirror, so as to achieve the stability of the high-precision optical surface. [0003] ...
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IPC IPC(8): G02B7/182
CPCG02B7/182
Inventor 关英俊辛建儒朱俊青
Owner CHANGCHUN UNIV OF TECH