CN205656326U - Novel coke side diaphragm - Google Patents
Novel coke side diaphragm Download PDFInfo
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- CN205656326U CN205656326U CN201620486670.3U CN201620486670U CN205656326U CN 205656326 U CN205656326 U CN 205656326U CN 201620486670 U CN201620486670 U CN 201620486670U CN 205656326 U CN205656326 U CN 205656326U
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- diaphragm
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Abstract
The utility model discloses a novel coke side diaphragm aims at providing a small novel coke side diaphragm. It includes that the middle part has the diaphragm body of iris opening, the incident surface of the diaphragm body is provided with the special -shaped recess around the iris opening, and the reflection mirror surface of this side end face of iris opening for having the constant slope, the reflection mirror surface stretches out one section distance of special -shaped recess, makes the circuit of its reverberation lie in outside the special -shaped recess. The utility model discloses can effectively satisfy the user demand of the telescope of adoption cassegrain system, both can provide field stop's effect for the terminal fitting, still can possess the supervision light path of predetermined visual field, can satisfy the required heat accuse function of solar telescope again.
Description
Technical field
This utility model relates to telescope technical field, especially relates to a kind of novel focal plane diaphragm.
Background technology
The focal plane thermal control of Solar Optical Telescope at present typically uses two ways to solve: a kind of is to use plane mirror with holes that unnecessary sunlight beyond required visual field is reflected light path, during reflection, reflecting mirror can absorb portion of energy and causes temperature to raise, and lowers the temperature frequently with modes such as liquid coolings；Another kind is to use conical reflecting surface with holes to limit visual field, sponges the energy of unnecessary sunlight around conical reflecting surface with heat-absorbing material, uses jet impulse mode to carry out lower the temperature (Heat Stop mode) simultaneously.
The equal Shortcomings of both the above mode, is embodied as: the mode of the first plane mirror is relatively simple, and heat absorption is little, but can cause interference of stray light.The second Heat Stop mode can stop veiling glare, but the pressure of thermal control is bigger.Main focal plane temperature control is the key technology of horizontal solar telescope design all the time, needs to be paid attention to especially, and correlation technique is still in constantly development.The mode of current operating open horizontal solar telescope many employings field stop plane mirror, is aided with liquid cooling；And next generation's super-large diameter open horizontal solar telescope many employings absorption-type Heat Stop mode, cool down in jet impulse mode.
Owing to it cannot be directly viewed observed object when horizontal solar telescope carries out spectrum observation, it is thus desirable to carry out slit supervision, but aforementioned two kinds of main horizontal solar telescope focal plane diaphragms, in addition to by the light of diaphragm, remaining light or be reflected light path, or just sponged by Heat stop.And when horizontal solar telescope uses Cassegrain system, the symmetry of light path system is conducive to high accuracy polarimetry.But F1 focus is positioned at telescopical primary mirror rear, is followed by the collimating mirror of polarization analysis device after focus.Whole system structure is the compactest, individually carries out visual field supervision before seam and is difficult to.In system, the part of unique light splitting is exactly focal plane diaphragm, but in current two kinds of diaphragm forms, although the type of directly reflection has individual reflecting mirror, but owing to being not used to imaging, does not therefore do requirement for the surface precision under this reflecting mirror thermal control state；Heat stop form is not the most available for the plane mirror of imaging.
Therefore, it is necessary to design the horizontal solar telescope focal plane diaphragm of a kind of novel realized focal plane function for monitoring, the telescopical unique function demand using Cassegrain system could be met.
Utility model content
This utility model overcomes shortcoming of the prior art, it is provided that a kind of volume is little, has field stop effect, can possess the supervision light path of predetermined field of view, the novel focal plane diaphragm of the thermal control function needed for can meeting horizontal solar telescope again.
In order to solve above-mentioned technical problem, this utility model is achieved through the following technical solutions:
A kind of novel focal plane diaphragm, including in the middle part of there is the diaphragm body of diaphragm opening；The plane of incidence of described diaphragm body is provided with the special impression around diaphragm opening, and this side end face of diaphragm opening is the mirror surface with constant slope；Described mirror surface stretches out special impression one segment distance so that it is the circuit of reflection light is positioned at outside special impression.
Preferably, the outer side surface of described special impression is cylinder, the first frustum section that interior sidewall surface is followed successively by cylindrical section from mirror surface to the other end, end face is connected with cylindrical section respective end, and the second frustum section that end face and the first frustum section bottom surface connect；The tapering of described second frustum section is more than the first frustum section, and the edge of its bottom surface is connected with the outer side surface of groove；Connection end diameter between described cylindrical section, the first frustum section and the second frustum section is identical.
Compared with prior art, this utility model has the advantage that
(1) this utility model can effectively meet the telescopical use demand using Cassegrain system, both can provide the effect of field stop to terminal fitting, also can possess the supervision light path of predetermined field of view, can meet again the thermal control function needed for horizontal solar telescope.
(2) this utility model has the selection of slit visual field, visual field monitors, veiling glare suppresses and absorbs the functions such as heat, it has a special-shaped cavity, utilize jet impulse mode to absorb sunlight in cavity and irradiate the heat brought, position of focal plane at focal plane diaphragm, there is a mirror surface, the light of partial field of view can be reflexed to monitoring system.Diaphragm itself can absorb unnecessary light, and the interference to optical system is the least.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is only embodiments more of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not paying creative work premise, broadly fall into the scope of this utility model protection.
Novel focal plane diaphragm shown in Fig. 1, including in the middle part of there is the diaphragm body 2 of diaphragm opening 1；The plane of incidence of described diaphragm body 2 is provided with the special impression 3 around diaphragm opening 1, and this side end face of diaphragm opening 1 is the mirror surface AA with constant slope；Described mirror surface AA stretches out special impression 3 one segment distance so that it is the circuit of reflection light is positioned at outside special impression 3.
In the present embodiment, the outer side surface DE of described special impression 3 is cylinder, the first frustum section BC that interior sidewall surface ABCD is followed successively by cylindrical section AB from mirror surface AA to the other end, end face is connected with cylindrical section AB respective end, and the second frustum section CD that end face and the first frustum section BC bottom surface connect；The tapering of described second frustum section CD is more than the first frustum section BC, and the edge of its bottom surface is connected with the outer side surface DE of groove；Connection end diameter between described cylindrical section AB, the first frustum section BC and the second frustum section CD is identical.
During use, when from guide optical telescope converge to the light near focal plane be irradiated to mirror surface AA on time, major part be reflected to supervision light path, the very small part at center is then by the diaphragm opening at center, enter polarization analysis device (for other telescopes, then be main observation area)；When light is irradiated to cylindrical section AB, the first frustum section BC, the second frustum section CD, then absorbed by diaphragm body, outer side surface DE then plays the effect stopping dump energy, is i.e. absorbed sunlight by special impression in jet impulse mode and irradiates the heat brought, meets the thermal control function needed for horizontal solar telescope.
The foregoing is only preferred embodiment of the present utility model; not in order to limit this utility model; all within spirit of the present utility model and principle, any modification, equivalent substitution and improvement etc. made, within should be included in protection domain of the present utility model.
Claims (2)
1. a novel focal plane diaphragm, including in the middle part of there is the diaphragm body of diaphragm opening；It is characterized in that: the plane of incidence of described diaphragm body is provided with the special impression around diaphragm opening, and this side end face of diaphragm opening is the mirror surface with constant slope；Described mirror surface stretches out special impression one segment distance so that it is the circuit of reflection light is positioned at outside special impression.
Novel focal plane diaphragm the most according to claim 1, it is characterized in that: the outer side surface of described special impression is cylinder, the first frustum section that interior sidewall surface is followed successively by cylindrical section from mirror surface to the other end, end face is connected with cylindrical section respective end, and the second frustum section that end face and the first frustum section bottom surface connect；The tapering of described second frustum section is more than the first frustum section, and the edge of its bottom surface is connected with the outer side surface of groove；Connection end diameter between described cylindrical section, the first frustum section and the second frustum section is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620486670.3U CN205656326U (en) | 2016-05-25 | 2016-05-25 | Novel coke side diaphragm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620486670.3U CN205656326U (en) | 2016-05-25 | 2016-05-25 | Novel coke side diaphragm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205656326U true CN205656326U (en) | 2016-10-19 |
Family
ID=57405286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620486670.3U Withdrawn - After Issue CN205656326U (en) | 2016-05-25 | 2016-05-25 | Novel coke side diaphragm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205656326U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105891918A (en) * | 2016-05-25 | 2016-08-24 | 中国科学院云南天文台 | Novel focal plane diaphragm |
-
2016
- 2016-05-25 CN CN201620486670.3U patent/CN205656326U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105891918A (en) * | 2016-05-25 | 2016-08-24 | 中国科学院云南天文台 | Novel focal plane diaphragm |
| CN105891918B (en) * | 2016-05-25 | 2018-04-17 | 中国科学院云南天文台 | A kind of new focal plane diaphragm |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161019 Effective date of abandoning: 20180417 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20161019 Effective date of abandoning: 20180417 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |