CN209496160U - One-piece type prism - Google Patents
One-piece type prism Download PDFInfo
- Publication number
- CN209496160U CN209496160U CN201920074061.0U CN201920074061U CN209496160U CN 209496160 U CN209496160 U CN 209496160U CN 201920074061 U CN201920074061 U CN 201920074061U CN 209496160 U CN209496160 U CN 209496160U
- Authority
- CN
- China
- Prior art keywords
- reflecting surface
- piece type
- prism
- mounting plate
- type prism
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Optical Elements Other Than Lenses (AREA)
Abstract
The utility model provides a kind of one-piece type prism, which includes mirror body and integrally formed mounting plate and reflecting surface.Compared with prism assemblies in the prior art, the one-piece type prism of the utility model rigging error caused when not having prism and a frame assemblies, in addition to installation accuracy is higher, the one-piece type prism dimensions precision of the utility model and the long-time stability of performance are more excellent.
Description
Technical field
The utility model belongs to optical devices technologies field, and in particular to one-piece type prism.
Background technique
In military field, platform alignment prism component is the benchmark of platform orientation optical laying, is initially aligned for whole rocket,
The stability of its installation accuracy will have a direct impact on the impact accuracy of rocket.Platform alignment prism component is mounted in Inertial Navigation Platform
On, it is used as alignment of orientation, right optical prism therein is mounted on the orientation-sensitive axis of plateform system, can be with azimuth axis one
Play rotation.The long-time stability of the dimensional accuracy of prism, installation accuracy and performance have the alignment of orientation precision of plateform system
It is direct to influence.However, individually prism cannot be attached on platform, it is necessary to it forms prism assemblies just and can ensure that installation is fixed,
To adjust prism relative to the hexahedral azimuthal error of platform and be horizontally mounted error.
In the prior art, prism assemblies include devitrified glass mirror body, aluminum or steel prism base and the combination of left and right pressing plate
Multiple components such as part.Excessive design of part will increase the error of assembly and keep error cumulative, while the higher heat of aluminum mirror holder
The coefficient of expansion also can make mirror holder size unstable because of difference variation, and the above problem all greatly affected the essence of prism system
Degree.
Utility model content
To solve in the prior art, rigging error present in platform alignment prism component adds up problem, the utility model
Be designed to provide a kind of one-piece type prism.
To achieve the above object, the utility model uses following technical scheme:
One-piece type prism, including
Mirror body；
The mirror body both sides have each extended over integrally formed first mounting plate and the second mounting plate；
Integrally formed first reflecting surface, first mounting plate and the first reflecting surface are provided on first mounting plate
Between angle be 45 ° ± 5 "；
Integrated molding, second reflecting surface opposite with first reflecting surface are provided on second mounting plate, it is described
Angle between second mounting plate and the second reflecting surface is 45 ° ± 5 "；
Angle between first reflecting surface and the second reflecting surface is 90 ° ± 5 ".
Preferably, it is provided with escape between first reflecting surface and the second reflecting surface, which is set and is conducive to
Conveniently it is machined out.
Preferably, the mirror holder mounting hole of perforation mounting plate is provided on the mounting plate.
It is further preferred that being provided with mirror holder installation card around the mirror holder mounting hole, away from the side of the reflecting surface
Platform, mirror holder installation chuck with a thickness of 0.8~1.2mm.
It is further preferred that a length of 14mm, width 10mm of the mirror holder installation chuck.
It is further preferred that mirror holder installation chuck with a thickness of 1mm.
Installation chuck is used to for prism assemblies being fixed on inertial navigation system work stage body, which directly affects
The positioning accuracy of entire inertial navigation or navigation system.
Preferably, silver coating is provided on the reflecting surface.
It is further preferred that the silver coating with a thickness of 50~100nm, it is ensured that reflecting surface is in 400~800nm wave
The reflectivity of section is greater than 95%.
It is further preferred that being provided with silicon dioxide layer on the silver coating.
It is further preferred that the silicon dioxide layer with a thickness of 5~10 μm.
Preferably, the angle between first reflecting surface and first mounting plate is 45 ° ± 5 "；Second reflection
Face and the angle between second mounting plate are 45 ° ± 5 "；Angle between first reflecting surface and the second reflecting surface
It is 90 ° ± 5 ".
The one-piece type prism of the utility model can replace existing prism using integrally formed aluminum silicon carbide composite material
Aluminium alloy and devitrified glass in component.By being an entirety by structural integrities such as mirror body, mirror holder, pressing plates, not only effectively
Ground avoids rigging error, while the characteristic of aluminium silicon carbide material low thermal coefficient of expansion can also effectively improve the essence of prism system
Degree.
The preparation method of above-mentioned one-piece type prism, step include:
(1) one-piece type prism structure size is determined；
(2) high body part (70%) porous silicon carbide ceramic precast body is fired；
(3) method is made by pressure cast, it is multiple that the silicon carbide ceramics precast body of aluminium alloy and step (2) is prepared as aluminium silicon carbide
Condensation material crude green body, optical manufacturing after machining.
Step (2) method particularly includes:
(s1) with 1 μm of partial size (5~10%), 5 μm (15~20%), 15 μm (25~30%), 65 μm (residue) of carbonization
Silicon particle carries out mixing；
(s2) the wax adhesive powder that partial size is 5~200 μm is added and carries out rerolling, is heated to using resistance furnace
100~150 DEG C, the cured slurry injection size of semi liquid state is greater than to the steel die of 70*70*40；
(s3) firing of precast body is completed after being sintered to precast body after cooling.
In step (3), preferential 7075 trade mark of aluminium alloy, machining using fast wire edm cutter to aluminium silicon carbide material into
Then row crude green body blanking, feed rate 3mm/min are machined to form factor with boron nitride milling cutter, depth of cut 0.2mm,
Revolving speed is 2000rpm, feed rate 100mm/min.Reflecting surface is processed with the mode that PG is processed again, reflecting surface processing
To finish be Ra0.02,1 μm of flatness.
Compared with prism assemblies in the prior art, when the one-piece type prism of the utility model does not have prism and frame assemblies
Caused rigging error (being typically embodied by error caused by bolt installation, pack clearance).
The one-piece type prism material of the utility model is aluminum silicon carbide composite material, the thermal expansion coefficient (7.1* of the material
10-6/ K) it is far below thermal expansion coefficient (20~23*10 of aluminium alloy-6/ K), it can effectively improve the overall stability of system.
In addition, aluminum silicon carbide composite material thermal conductivity is high (200W/ (mK)), be conducive to prism heat dissipation, and aluminium silicon carbide is compound
The high elastic modulus of material is it is also ensured that prism is unlikely to deform in the case where bearing microstress.Table 1 show aluminium silicon carbide
With the performance comparison of aluminium alloy.
The performance comparison of table 1 aluminium silicon carbide and aluminium alloy
The beneficial effects of the utility model
1, compared with prism assemblies in the prior art, the one-piece type prism of the utility model solves prism and mirror holder group
Caused rigging error (being typically embodied by error caused by bolt installation, pack clearance) problem when dress；
2, in addition to installation accuracy is higher, the long-time stability of the one-piece type prism dimensions precision of the utility model and performance are more
It is excellent.
Detailed description of the invention
Fig. 1 is integrated the positive structure schematic of type prism.
Fig. 2 is integrated the structure schematic diagram of type prism.
Fig. 3 is the reflectance map of silver coating.
Fig. 4 is the reflective-mode schematic diagram of existing prism assemblies.
Fig. 5 is integrated the reflective-mode schematic diagram of type prism.
Specific embodiment
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing to this
The specific embodiment of utility model is described in detail.Many details are elaborated in being described below in order to sufficiently manage
Solve the utility model.But the utility model can be implemented with being much different from the other way described again, this field skill
Art personnel can do similar improvement without prejudice to the utility model connotation, therefore the utility model is not by described below
Specific implementation limitation.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
There may also be elements placed in the middle.When an element is considered as " connection " another element, it can be directly to separately
One element may be simultaneously present centering elements.Term as used herein "vertical", "horizontal", "left" and "right"
And similar statement is for illustrative purposes only, is not meant to be the only embodiment.
Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model
The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term " and or " used herein includes
Any and all combinations of one or more related listed items.
Embodiment 1
This example provides a kind of one-piece type prisms, and as depicted in figs. 1 and 2, which includes
Mirror body 10 has each extended over integrally formed first mounting plate 110 and the second mounting plate on the both sides of mirror body 10
120, be provided with integrally formed first reflecting surface 130 on the first mounting plate 110, be provided on the second mounting plate 120 one at
Type, second reflecting surface 140 opposite with the first reflecting surface 130, two reflectings surface are located at the not ipsilateral of mounting plate with mirror body 10, are
Facilitate mach progress, between the first reflecting surface 130 and the second reflecting surface 140 is provided with escape 150.First installation
Angle between plate and the first reflecting surface is 45 ° ± 5 ", and the angle between the second mounting plate and two reflectings surface is 45 ° ± 5 ",
Angle between first reflecting surface and the second reflecting surface is 90 ° ± 5 ".
It is provided with the mirror holder mounting hole 160 of perforation mounting plate on mounting plate, is used for fixed prism.
In addition, mirror holder installation chuck 170 is additionally provided with around mirror holder mounting hole 160, away from the side of the reflecting surface,
The mirror holder install chuck 170 with a thickness of 1mm, for prism to be fixed on inertial navigation system work stage body, fixation essence
Degree directly affects the positioning accuracy of entire inertial navigation or navigation system.
It is provided with the silver coating with a thickness of 50~100nm on the reflecting surface, it is ensured that reflecting surface is in 400~800nm wave
The reflectivity of section is greater than 95%, and silver coating reflectivity on silver coating as shown in figure 3, be provided with the dioxy with a thickness of 5~10 μm
SiClx protective layer.
In the prior art, traditional prism assemblies include at least devitrified glass mirror body, aluminum or steel prism base and a left side
Devitrified glass mirror body in conventional prism component (is equivalent to this example by right pressing plate sub-assembly, the one-piece type prism of the utility model
In reflecting surface), aluminum or steel prism base (mirror body being equivalent in this example) and left and right pressing plate sub-assembly (be equivalent to this example
In mounting plate) use aluminum silicon carbide composite material, by mirror body (reflecting surface of the one-piece type prism of the utility model), pedestal (this
Mirror body in the one-piece type prism of utility model) and the structures such as pressing plate sub-assembly (mounting plate of the one-piece type prism of the utility model) it is whole
It is combined into an entirety, not only efficiently avoids rigging error, furthermore the characteristic of aluminium silicon carbide material low thermal coefficient of expansion may be used also
To effectively improve the precision of prism system.Fig. 4 is the reflective-mode schematic diagram of existing prism assemblies.Fig. 5 is the utility model
The reflective-mode schematic diagram of one-piece type prism.
Embodiment 2
This example provides the preparation method of one-piece type prism, step includes:
(1) one-piece type prism structure size is determined；
(2) high body part (70%) porous silicon carbide ceramic precast body is fired；
(3) method is made by pressure cast, it is multiple that the silicon carbide ceramics precast body of aluminium alloy and step (2) is prepared as aluminium silicon carbide
Condensation material crude green body, optical manufacturing after machining.
Step (2) method particularly includes:
(s1) with 1 μm of partial size (5~10%), 5 μm (15~20%), 15 μm (25~30%), 65 μm (residue) of carbonization
Silicon particle carries out mixing；
(s2) the wax adhesive powder that partial size is 5~200 μm is added and carries out rerolling, is heated to using resistance furnace
100~150 DEG C, the cured slurry injection size of semi liquid state is greater than to the steel die of 70*70*40；
(s3) firing of precast body is completed after being sintered to precast body after cooling.
In step (3), preferential 7075 trade mark of aluminium alloy, machining using fast wire edm cutter to aluminium silicon carbide material into
Then row crude green body blanking, feed rate 3mm/min are machined to form factor with boron nitride milling cutter, depth of cut 0.2mm,
Revolving speed is 2000rpm, feed rate 100mm/min.Reflecting surface is processed with the mode that PG is processed again, reflecting surface processing
To finish be Ra0.02,1 μm of flatness.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it should not be understood as limiting the scope of the patent of the utility model.It should be pointed out that for the common of this field
For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to
In the protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (8)
1. one-piece type prism, which is characterized in that the prism includes
Mirror body (10)；
Mirror body (10) both sides have each extended over integrally formed first mounting plate (110) and the second mounting plate (120)；
Integrally formed first reflecting surface (130), first mounting plate (110) are provided on first mounting plate (110)
Angle between the first reflecting surface (130) is 45 ° ± 5 "；
Integrated molding and the second opposite reflecting surface of first reflecting surface (130) are provided on second mounting plate (120)
(140), the angle between second mounting plate (120) and the second reflecting surface (140) is 45 ° ± 5 "；
Angle between first reflecting surface (130) and the second reflecting surface (140) is 90 ° ± 5 ".
2. one-piece type prism according to claim 1, which is characterized in that first reflecting surface (130) and the second reflection
Escape (150) are provided between face (140).
3. one-piece type prism according to claim 1, which is characterized in that be provided with perforation mounting plate on the mounting plate
Mirror holder mounting hole (160).
4. one-piece type prism according to claim 3, which is characterized in that around the mirror holder mounting hole (160), deviate from institute
The side for stating reflecting surface is provided with mirror holder installation chuck (170), mirror holder installation chuck (170) with a thickness of 0.8~
1.2mm。
5. one-piece type prism according to claim 1, which is characterized in that be provided with silver coating on the reflecting surface.
6. one-piece type prism according to claim 5, which is characterized in that the silver coating with a thickness of 50~100nm.
7. one-piece type prism according to claim 5, which is characterized in that be provided with silicon dioxide layer on the silver coating.
8. one-piece type prism according to claim 7, which is characterized in that the silicon dioxide layer with a thickness of 5~10 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920074061.0U CN209496160U (en) | 2019-01-15 | 2019-01-15 | One-piece type prism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920074061.0U CN209496160U (en) | 2019-01-15 | 2019-01-15 | One-piece type prism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209496160U true CN209496160U (en) | 2019-10-15 |
Family
ID=68155561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920074061.0U Active CN209496160U (en) | 2019-01-15 | 2019-01-15 | One-piece type prism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209496160U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111580242A (en) * | 2020-05-01 | 2020-08-25 | 湖北三江航天万峰科技发展有限公司 | High-precision reference prism device for field work |
-
2019
- 2019-01-15 CN CN201920074061.0U patent/CN209496160U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111580242A (en) * | 2020-05-01 | 2020-08-25 | 湖北三江航天万峰科技发展有限公司 | High-precision reference prism device for field work |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8242039B2 (en) | Cordierite-based sintered body | |
| US20110123821A1 (en) | Aluminum-diamond composite and manufacturing method | |
| CN209496160U (en) | One-piece type prism | |
| CN105174720B (en) | A kind of manufacture method of light reflection mirror | |
| KR20070064293A (en) | Aluminum-silicon carbide composite | |
| CN102254587B (en) | Sizing agent for Al-BSF (Al-back surface field) of silicon solar cell and preparation method thereof | |
| CN111850454B (en) | CMAS erosion resistant thermal barrier coating and preparation method thereof | |
| EP1713149B1 (en) | Glaze soldered laser components and method of manufacturing | |
| JP6902609B2 (en) | Synthetic diamond plate | |
| JPWO2014157734A1 (en) | Handle substrate for composite substrates for semiconductors | |
| CN102875014A (en) | Bonding edge-cladding method for laser glass | |
| CN107556012A (en) | A kind of imbedded and fastened bulletproof ceramic sheet and preparation method thereof | |
| US20120189871A1 (en) | Ultra high temperature environmental protection coating | |
| CN101012123A (en) | High heat expansion rate heat barrier coating material of Yb2O3 and Gd2O3 doped with YSZ | |
| Xia et al. | Effects of AlN on the thermal and mechanical properties of vitrified bond and vitrified CBN composites | |
| CN106169694A (en) | A kind of large scale recombination laser gain batten member and preparation method | |
| US5579333A (en) | Cooled laser mirror materials | |
| KR101931616B1 (en) | Ceramic substrate, manufacturing method thereof, and power module | |
| US20160039010A1 (en) | Surface-coated boron nitride sintered body tool | |
| CN103045167A (en) | Magnetic grinding material and preparation method thereof | |
| EP3859410A1 (en) | Optical mirrors made of carbon fiber composite material | |
| CN108695422A (en) | Light-emitting device and preparation method thereof | |
| CN109972123B (en) | Plating and grinding method for high-hardness chemical nickel plating layer on surface of hexahedron of beryllium material | |
| WO2020108142A1 (en) | Transparent substrate, preparation method therefor, and electronic device | |
| JPH01183371A (en) | Extremely thin cutting blade |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20221128 Granted publication date: 20191015 |