CN104570318A - Ball-type ultralow-temperature mirror surface side supporting mechanism for astronomical telescope - Google Patents
Ball-type ultralow-temperature mirror surface side supporting mechanism for astronomical telescope Download PDFInfo
- Publication number
- CN104570318A CN104570318A CN201410683547.6A CN201410683547A CN104570318A CN 104570318 A CN104570318 A CN 104570318A CN 201410683547 A CN201410683547 A CN 201410683547A CN 104570318 A CN104570318 A CN 104570318A
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- China
- Prior art keywords
- ball
- astronomical telescope
- mirror
- temperature
- type ultralow
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/16—Housings; Caps; Mountings; Supports, e.g. with counterweight
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- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Telescopes (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses a ball-type ultralow-temperature mirror surface side supporting mechanism for an astronomical telescope. The ball-type ultralow-temperature mirror surface side supporting mechanism is characterized in that a U-shaped slot attached to the outer cylindrical surface of a circular mirror of the telescope is formed in the periphery of a mirror tube of a primary mirror of the astronomical telescope; the U-shaped slot is full of small steel balls. According to an optimal scheme, the small steel balls of phi 4 mm are adopted. According to the ball-type ultralow-temperature mirror surface side supporting mechanism, the deficiencies that a lever and heavy hammer structure is relatively complicated and large in occupied space, a flexible steel band can be only used in a fixed direction, and a mercury band support cannot be applied at the low temperature in the prior art can be overcome; the astronomical telescope as a side support can work at an ultralow temperature of subzero 85 DEG C in the antarctic region.
Description
Technical field
The present invention relates to a kind of telescope surface bearing structure, be specifically related to a kind of that can work under ultralow temperature, utilize ball as circle flat sides surface bearing gravity, the ball-type ultralow temperature mirrored sides supporting device of astronomical telescope.
Background technology
In the structural design of astronomical telescope major optical parts primary mirror, make primary mirror telescope work point to not on the same day district time keep its accurate face shape constant, accurate supporting system must be used, be called bottom support to bear minute surface along the gravity perpendicular to minute surface direction.Should bear again the mechanism along the gravity being parallel to minute surface direction simultaneously, be called side bearing.The side bearing continued to use in the past has lever weighting, flexible steel band and mercury belt.
Lever weighting structure is more complicated, takes up space large.Flexible steel band can only use at a fixed-direction.Thus mercury band is a kind of well structure.Mercury belt supporting structure is simple, and volume is little, utilizes mercury well can adapt to the cross component of the primary mirror Gravity changer of different directions than the buoyancy of great generation.
Due to the corresponding buoyancy that can solidify generation not of mercury at low temperatures, under the supporting of mercury band just can not be applied to low temperature, the use especially in polar region telescope.
Mirrored sides supporting scheme of the prior art, is unsuitable for using in the structure of antarctic astronomical telescope substantially.
Summary of the invention
In order to make up the deficiencies in the prior art, the object of this invention is to provide a kind of utilize ball as circle flat sides surface bearing gravity, the ball-type ultralow temperature mirrored sides supporting device of astronomical telescope.It is more complicated that this structure can overcome lever weighting structure in prior art, large, the flexible steel band of taking up space can only use at a fixed-direction and the supporting of mercury band can not be applied to the deficiency under low temperature, can work using the present invention as the astronomical telescope of collateral support under antarctic ultralow temperature.
The technical scheme completing foregoing invention task is, a kind of ball-type ultralow temperature mirrored sides supporting device of astronomical telescope, it is characterized in that, the structure of this mirrored sides supporting device is: the surrounding of primary mirror of astronomical telescope lens barrel, be provided with the U-lag (cross section is the circular trough of U-shaped) fitting in the circular mirror external cylindrical surface of telescope, in this U-lag, be full of little steel ball.
Structure of the present invention is told and is similar to mercury band of the prior art; Be full of little steel ball in the circular trough just mercury band being replaced with steel construction, utilize little steel ball to replace mercury, little steel ball under gravity mutually extruding have side direction weight component, produce the towing force to mirror.Thus play side bearing effect.
Further improvement of the present invention, has following prioritization scheme:
1, described little steel ball, suggestion adopts the little steel ball of Φ 4 ㎜;
2, fill with low temperature fat between the little steel ball of described each; To reduce friction force between steel ball;
3, the width of described U-lag (circular trough) is about 1/2 (should depending on mirror material proportion) of mirror average thickness H; Specifically be of a size of ρ/5, wherein, ρ is the proportion of telescope specular material.(proportion 5 is because steel ball has gap according to actual measurement equivalent, learns that proportion is about about 5.）
Illustrate: the computing formula with reference to mercury bandwidth: b=G/ π R
2ρ
1, G is mirror weight, ρ
1for the medium proportion supported; And G=π R
2h ρ
2, in formula, H is mirror average thickness, ρ
2for mirror material density; Therefore there are upper two formula known: b=H ρ
2/ ρ
1.
Telescope specular material is generally glass and makes proportion and be about 2.5.And little steel ball material proportion is 7.8, consider the factor in gap, actual duty cycle is heavily about 5.So namely wide 2.5/5 of the mirror average thickness H that should be of this side bearing is about 1/2, the lateral supporting forces that can be comparatively satisfied with.
4, described U-lag and mirror cell are rigidly connected, and leave the gap being less than steel ball radius outside the mirror face of cylinder.
The ball-type ultralow temperature mirrored sides supporting device of astronomical telescope of the present invention, lever weighting structure in prior art can be overcome more complicated, large, the flexible steel band of taking up space can only use at a fixed-direction and the supporting of mercury band can not be applied to the deficiency under low temperature, can work using the present invention as the astronomical telescope of collateral support under antarctic ultralow temperature.The minimum temperature that this invention uses is railway grease working temperature between steel ball and steel ball, can at subzero 85 ° of C.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the side view of Fig. 1.
Embodiment
Embodiment 1, the ball-type ultralow temperature mirrored sides supporting device of astronomical telescope, with reference to Fig. 1, Fig. 2: the surrounding of primary mirror of astronomical telescope lens barrel, is provided with the U-lag fitting in the circular mirror external cylindrical surface of telescope, is full of little steel ball in this U-lag.All parts title in figure: U-lag (support ring) 1; Little steel ball 2; Primary mirror of astronomical telescope lens barrel 3.
Its structure is told and is similar to mercury band.Be full of the little steel ball of Φ 4 ㎜ in the circular trough just mercury band being replaced with steel construction, be reduce friction force between steel ball, and fill with low temperature fat.
The feature of the design is:
1. the telescope side bearing be applicable under the environment of polar region is made up of the U-lag and the little steel ball of inner filling fitting in the circular mirror external cylindrical surface of telescope.
2. U-lag described in and mirror cell are rigidly connected, and leave the gap being less than steel ball radius outside the mirror face of cylinder.
3. the groove width b of U-lag described in should be about 1/2 (should depending on mirror material proportion) of mirror (primary mirror of astronomical telescope minute surface) average thickness, and be specifically of a size of ρ/5, ρ is material proportion.
Claims (5)
1. the ball-type ultralow temperature mirrored sides supporting device of an astronomical telescope, it is characterized in that, the structure of this mirrored sides supporting device is: the surrounding of primary mirror of astronomical telescope lens barrel, is provided with the U-lag fitting in the circular mirror external cylindrical surface of telescope, is full of little steel ball in this U-lag.
2. the ball-type ultralow temperature mirrored sides supporting device of astronomical telescope according to claim 1, is characterized in that, described little steel ball, is the little steel ball adopting Φ 4 ㎜.
3. the ball-type ultralow temperature mirrored sides supporting device of astronomical telescope according to claim 1, is characterized in that, fills with low temperature fat between each described little steel ball.
4. the ball-type ultralow temperature mirrored sides supporting device of astronomical telescope according to claim 1, it is characterized in that, described U-lag and mirror cell are rigidly connected, and leave the gap being less than steel ball radius outside the mirror face of cylinder.
5. according to the ball-type ultralow temperature mirrored sides supporting device of the astronomical telescope one of claim 1-4 Suo Shu, it is characterized in that, the width b of described U-lag is 1/2 of primary mirror of astronomical telescope minute surface average thickness H.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410683547.6A CN104570318B (en) | 2014-11-24 | 2014-11-24 | The ball-type ultralow temperature mirrored sides supporting device of astronomical telescope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410683547.6A CN104570318B (en) | 2014-11-24 | 2014-11-24 | The ball-type ultralow temperature mirrored sides supporting device of astronomical telescope |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104570318A true CN104570318A (en) | 2015-04-29 |
| CN104570318B CN104570318B (en) | 2016-11-09 |
Family
ID=53086799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410683547.6A Expired - Fee Related CN104570318B (en) | 2014-11-24 | 2014-11-24 | The ball-type ultralow temperature mirrored sides supporting device of astronomical telescope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104570318B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4822156A (en) * | 1985-10-23 | 1989-04-18 | Huegenell Hermann | Reflecting telescope |
| US4991948A (en) * | 1987-03-06 | 1991-02-12 | Hermann Hugenell | Reflector telescope |
| CN102902042A (en) * | 2012-10-31 | 2013-01-30 | 中国科学院长春光学精密机械与物理研究所 | Composite flexible support structure for large caliber reflector |
| WO2014088024A1 (en) * | 2012-12-05 | 2014-06-12 | コニカミノルタ株式会社 | Lens barrel, image acquiring unit, and method for assembling same |
| KR101446954B1 (en) * | 2013-10-21 | 2014-10-10 | 고등기술연구원연구조합 | Measurement apparatus for operating load of fast steering mirror unit for large telescopic system and large telescopic system having the same |
-
2014
- 2014-11-24 CN CN201410683547.6A patent/CN104570318B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4822156A (en) * | 1985-10-23 | 1989-04-18 | Huegenell Hermann | Reflecting telescope |
| US4991948A (en) * | 1987-03-06 | 1991-02-12 | Hermann Hugenell | Reflector telescope |
| CN102902042A (en) * | 2012-10-31 | 2013-01-30 | 中国科学院长春光学精密机械与物理研究所 | Composite flexible support structure for large caliber reflector |
| WO2014088024A1 (en) * | 2012-12-05 | 2014-06-12 | コニカミノルタ株式会社 | Lens barrel, image acquiring unit, and method for assembling same |
| US20150316742A1 (en) * | 2012-12-05 | 2015-11-05 | Konica Minolta, Inc. | Lens Barrel, Image Acquiring Unit, And Method For Assembling Same |
| KR101446954B1 (en) * | 2013-10-21 | 2014-10-10 | 고등기술연구원연구조합 | Measurement apparatus for operating load of fast steering mirror unit for large telescopic system and large telescopic system having the same |
Non-Patent Citations (2)
| Title |
|---|
| 傅家: "Whiffletree 结构在主镜侧支撑中的应用研究", 《红外技术》 * |
| 邵亮: "望远镜主镜柔性侧支撑机构设计研究", 《望远镜主镜柔性侧支撑机构设计研究》 * |
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| Publication number | Publication date |
|---|---|
| CN104570318B (en) | 2016-11-09 |
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Granted publication date: 20161109 Termination date: 20171124 |