CN209230790U - Device is fixed in single-photon detector micron order adjustment - Google Patents

Abstract

The utility model relates to a kind of fixed devices of single-photon detector micron order adjustment, including installing the installation part of detector, adjusting the photosurface of detector debugging device, axial regulating mechanism and the radiai adjustment mechanism parallel with the mounting surface of installation part, wherein, the installation part includes disk and the drum that is arranged on disk, the upper surface of the drum is the mounting surface, the detector is fixed on the mounting surface, it is set on the lower surface of the drum there are three in the boss being arranged circumferentially, the boss is contacted with the upper surface of the disk.The utility model can be by the determination of relative positional relationship between photosurface and its installation part.Axial, the radial micron order adjustment of single-photon detector ensure that by selecting reasonable differential thread screw pitch using screw thread differential attachment principle；And the method for solidification glue is injected using hollow structure type and cooperates the anti-skid chequer of adjusting screw rod bottom end, the detector after adjustment is secured firmly on lens bodies.

Description

Device is fixed in single-photon detector micron order adjustment

Technical field

The utility model belongs to optical technical field, and in particular to a kind of fixed dress of single-photon detector micron order adjustment It sets.

Background technique

It looks farther, measuring farther is pursuit eternal in military struggle.To mentioning it can be seen from laser radar equation The measurement distance of high system, core seek to improve detector responsivity, Laser emission energy, optical system transmitting-receiving efficiency, connect Antenna area is received, while reducing laser divergence angle.Other parameters such as target reflecting section, atmospheric transmittance are can not to pass through system The intrinsic parameter for designing to change.Remote laser ranging refers to relative to existing conventional techniques means, using new sensitive detection parts, The technologies such as optical system, location algorithm, so that the laser ranging ranging under equal conditions is greatly improved.

For in terms of the back-ray detection device, existing common linear model avalanche diode APD cannot expire Foot is such to be required.With the appearance of the APD (i.e. single-photon detector) of Geiger mode angular position digitizer, it is saturated since it is triggered with single photon Ability, for other conditions it is constant in the case where increase substantially ranging distance and provide a kind of possibility.But single photon detection The cost of the sensitivity enhancement of device is that its photosurface is small, and about 20 micrometre squares then require itself and leading portion optical system (mirror Head) alignment it is high, require to reach micron order adjustment during practical adjustment, and require that stabilization can under vehicle-mounted airborne circumstance The holding leaned on is very difficult.

The positional relationship between single-photon detector photosurface and its outer mounting surface is adjusted mainly using under microscope at present Adjusting postpones in place, then is fixed using laser welding, then absolutely not considers after welding, due to welding heat slow release And the position difference between bring photosurface and outer mounting surface, often will cause it is subsequent by between detector and optical lens i.e. Outer installation part is set to have been adjusted to position, but the optical axis of optical lens still cannot be vertical with detector photosurface, to reduce The efficiency of single-photon detector.In addition, be exactly between detector and optical system lens adjustment during, at present test Room adjusts the manual and angular motion displacement platform of the lower use for laboratory using superhigh precision.But during use, due to displacement Platform is an entity, the extraction that the cable of detector can not be successfully；And after displacement platform is withdrawn, it is difficult to consolidate original position It lives calmly, job requirement under the vehicle-mounted airborne circumstance of the electro-optical system cannot be adapted to.

Utility model content

To solve the above-mentioned problems, the utility model provides a kind of fixed device of single-photon detector micron order adjustment, Relative positional relationship between the photosurface of single-photon detector and its installation part can be determined, and reasonable poor by selection Dynamic thread pitch, ensure that axial, the radial micron order adjustment of single-photon detector.

To achieve the above object, the utility model provides a kind of fixed device of single-photon detector micron order adjustment, packet It includes: the installation part of detector being installed, adjusts the photosurface of the detector debugging device parallel with the mounting surface of installation part, axial tune Save mechanism and radiai adjustment mechanism, wherein the installation part includes disk and the drum that is arranged on disk, the detector Be fixed on the mounting surface, set on the lower surface of the drum there are three in the boss being arranged circumferentially, the boss with The upper surface of the disk contacts, and the upper surface of the disk is the mounting surface.

In one embodiment, the debugging device includes support frame and the retainer above support frame, the peace Piece installing is arranged on the support frame, and the top of the retainer is equipped with laser light source, the disk of the installation part and the retainer Coaxially.

In one embodiment, support frame as described above is equipped with upper plate and lower plate, passes through three support columns between upper plate and lower plate Supporting and space is formed, the installation part is located in supporting and space, and the disk is arranged at the center of the lower plate, under described The lower surface of plate is set there are three stabilizer blade.

In one embodiment, the retainer is cylindrical and is arranged on the upper plate, the inside of the retainer Equipped at least one horizontally disposed light attenuating filter piece.

In one embodiment, the debugging device is arranged in pneumatic table.

In one embodiment, the axial regulating mechanism includes the first screw rod, the first differential part and the first support sleeve, institute State the outside that the first support sleeve is set in the first screw rod and the first differential part, first screw rod include screw pitch it is different first outside Screw thread and the second external screw thread, first external screw thread be inserted into the first differential part and with its screw-internal thread fit, described second External screw thread is matched with the internal screw thread of the first support sleeve, and the first differential part being capable of sliding axially along the first support sleeve.

In one embodiment, the installation of detector is provided on the described first end face of the differential part far from the first screw rod Part, installation part are located at the outside of the first support sleeve, and the inside of the first differential part is equipped with the connector connecting with detector, even It connects device and is connect with the cable being located in the debugging device.

In one embodiment, second external screw thread is equipped in the end far from the first differential part with anti-skidding ripple Adjusting rod disk, adjusting rod disk inside are equipped with interior hexagonal groove.

In one embodiment, the radiai adjustment mechanism includes three the second screw rods, three the second differential parts and one Second support sleeve, second support sleeve include axial sleeve and three radial sleeves with axial sleeve perforation, the axial direction Sleeve is arranged and is fixed in the outside of the first support sleeve, and the radial direction sleeve is set in the outer of the second screw rod and the second differential part Portion, second screw rod include the different third external screw threads and the 4th external screw thread of screw pitch, third external screw thread insertion described the In two differential parts and with its screw-internal thread fit, the 4th external screw thread matches with the internal screw thread of radial direction sleeve, and described second is poor Moving part can radially sleeve slide axially.

In one embodiment, the outer wall of first support sleeve is equipped with cricoid groove, and the second differential part is separate One end of second screw rod be equipped with dentation anti-skid chequer simultaneously be inserted into the groove, second screw rod far from the second differential part one End is equipped with adjusting rod disk, is equipped with interior hexagonal groove inside adjusting rod disk.

Compared with the prior art, the advantages of the utility model are: (1) is provided with the installation part of adjustable water plane, peace Piece installing includes drum and disk, by adjusting three boss faces between drum and disk thus by the peace of photosurface and its installation part The determination of relative positional relationship between dress face；(2) screw thread differential attachment principle is used, by selecting reasonable differential thread spiral shell Away from ensure that axial, the radial micron order adjustment of single-photon detector；(3) using the side of hollow structure form injection solidification glue Method simultaneously cooperates anti-skid chequer, and the detector after adjustment is secured firmly on lens bodies, realizes detector vehicle-mounted, airborne etc. Need of work on dynamic mounting platform；In addition, the hollow structure of axial fine tuning structure can be also used for detector Electric Wires & Cables It passes through, realizes the reasonable line arrangement of detector cable, increase engineering reasonability and the service life of detector installation.

Detailed description of the invention

Hereinafter the utility model will be described in more detail based on the embodiments and with reference to the accompanying drawings.Wherein:

Fig. 1 is the schematic diagram of installation part and adjustment structure in the utility model；

Fig. 2 is the schematic diagram of axial regulating mechanism in the utility model；

Fig. 3 is the structural schematic diagram of adjusting rod disk in the utility model.

Identical component uses identical appended drawing reference in the accompanying drawings.The attached drawing is not drawn according to the actual ratio.

Description of symbols: 1- detector；11- photosurface；12- protective cover；21- drum；22- disk；23- mounting surface； 31- support frame；32- retainer；33- laser light source；34- light attenuating filter piece；35- pneumatic table；The first screw rod of 41-；42- first Differential part；The first support sleeve of 43-；The first external screw thread of 44-；The second external screw thread of 45-；46- connector；47- cable；48- is cricoid Groove；51- adjusting rod disk；The anti-skidding ripple of 52-；Hexagonal groove in 53-.

Specific embodiment

Below in conjunction with attached drawing, the utility model is described in further detail.Whereby to the utility model how application technology hand Section solves technical problem, and the realization process for reaching technical effect can be fully understood and implemented.As long as it should be noted that There is no conflict, items technical characteristic mentioned in the various embodiments be can be combined in any way.The utility model It is not limited to specific embodiment disclosed herein, but is included all technical solutions falling within the scope of the claims.

The descriptions such as "horizontal", "upper", the "lower" mentioned in the present embodiment be defined according to common meaning, for example, The direction definition of reference to gravitational, it is vertical with gravity direction be it is horizontal, under the direction of gravity is, on opposite direction is, only just It is illustrated in narration, rather than to limit the enforceable range of the utility model, relativeness is altered or modified, in no essence It changes under technology contents, also when being considered as the enforceable scope of the utility model, " first " and " second " as described in the examples are same Sample defines in order to facilitate narration.

The utility model provides a kind of fixed device of single-photon detector micron order adjustment, comprising: is equipped with detector 1 Installation part, adjust detector 1 the debugging device parallel with the mounting surface 23 of installation part of photosurface 11, axial regulating mechanism with And radiai adjustment mechanism.

As shown in Figure 1, the installation part includes disk 22 and the drum 21 that is arranged on disk 22, outside the detector 1 Portion is equipped with protective cover 12, and detector 1 is fixed on the upper surface of drum 21 by protective cover 12, the lower surface of the drum 21 On set there are three in the boss (not shown) being arranged circumferentially, the boss is contacted with the upper surface of the disk 22, The upper surface of the disk 22 is the mounting surface 23.

Specifically, the debugging device includes support frame 31 and the retainer 32 above support frame 31, the installation Part is arranged on support frame 31, and the top of the retainer 32 is equipped with laser light source 33, the disk 22 of the installation part with it is described Retainer 32 is coaxial.

Specifically, support frame as described above 31 is equipped with upper plate and lower plate, forms branch by three support columns between upper plate and lower plate Space is supportted, the installation part is located in supporting and space, and the disk 22 is arranged at the center of the lower plate, the lower plate Lower surface is set there are three stabilizer blade.

Specifically, the retainer 32 is cylindrical and is arranged on the upper plate, and the inside of the retainer 32 is equipped with At least one horizontally disposed light attenuating filter piece 34.Preferably, there are three light attenuating filter piece 34 is set.

Specifically, the debugging device is arranged on high-precision pneumatic platform 35.

Further, as shown in Fig. 2, the axial regulating mechanism includes the first screw rod 44, the first differential part 42 and first Support sleeve 43, first support sleeve 43 are set in the outside of the first screw rod 44 and the first differential part 42, first screw rod 44 Including screw pitch different the first external screw thread 44 and the second external screw thread 45, first external screw thread 44 is inserted into the described first differential part 42 It is interior and with its screw-internal thread fit, second external screw thread 45 matches with the internal screw thread of the first support sleeve 43, and described first is differential Part 42 being capable of sliding axially along the first support sleeve 43.

Further, the installation of detector 1 is provided on the described first end face of the differential part 42 far from the first screw rod 44 Part, installation part are located at the outside of the first support sleeve 43, and the inside of the first differential part 42 is equipped with the connection connecting with detector 1 Device 46, connector 46 are connect with the cable 47 being located in the debugging device.

Further, as shown in figure 3, second external screw thread 45 (i.e. the first screw rod 44) is in separate first differential part 42 End is equipped with the adjusting rod disk 51 with anti-skidding ripple 52, and adjusting rod disk 51 uses outer diameter for 40mm, with a thickness of 6mm and circle The design structure of Zhou Junbu 10 anti-skidding ripples 52, this structure are suitable for base of principle of human engineering, operate convenient for adjustment personnel；Together When, interior hexagonal groove 53, the die nut adjustment easy to use of interior hexagonal groove 53 are equipped with inside adjusting rod disk 51.

In one embodiment, the radiai adjustment mechanism is identical as the principle of axial regulating mechanism, also includes three the Two screw rods, three the second differential parts and second support sleeve, i.e., uniformly distributed on the circumference of second support sleeve there are three diameters To regulating mechanism, second support sleeve includes axial sleeve and three radial sleeves with axial sleeve perforation, the axial direction Sleeve is arranged and is fixed in the outside of the first support sleeve 43, and the radial direction sleeve is set in the second screw rod and the second differential part Outside, second screw rod include the different third external screw threads and the 4th external screw thread of screw pitch, described in the third external screw thread insertion In second differential part and with its screw-internal thread fit, the 4th external screw thread matches with the internal screw thread of radial direction sleeve, described second Differential part can radially sleeve slide axially.

Further, the outer wall of first support sleeve 43 is equipped with cricoid groove 48, and the second differential part is far from the One end of two screw rods is equipped with jagged anti-skid chequer and is inserted into the groove, similarly, poor far from second in second screw rod One end of moving part also is provided with adjusting rod disk 51, and interior the six of die nut adjustment easy to use also are provided with inside adjusting rod disk 51 Angle groove 53.

Preferably, axial regulating mechanism and radiai adjustment mechanism are all made of the brass material of wear resistant corrosion resistant in the utility model Material is made, and can promote the service life of regulating mechanism and guarantee reliable degree of regulation.

Preferably, the first screw rod 44 externally threaded differential screw pitch selection different with two screw pitch on the second screw rod is easy to The standard pitch of processing: if the screw pitch of the first external screw thread 44 is 1.25mm, the screw pitch of the second external screw thread 45 is 1.2mm.Thus may be used To calculate, axial regulating mechanism or every 10 ° of the rotation of radiai adjustment mechanism just promote 1.4 μm of (1.25-1.2)/36 ≈, thus real The axial freedom of detector 1, radial three free micron order adjustment of displacement are showed, it is only several to have fully met photosurface 11 The high-precision of ten microns of detector 1 is adjusted.In addition, the utility model differential thread regulating device (axial regulating mechanism and Radiai adjustment mechanism), processing adjustment is simple, compact-sized small and exquisite, low in cost.

The adjustment process of the utility model will be described in detail below.

Firstly, adjusting the depth of parallelism between 1 photosurface 11 of detector and 22 mounting surface 23 of disk.

Processing circuit plate where small micro- photosurface 11 of detector 1 is fixed on a tool in the connector by its behind On the plectane for having corresponding hole, the upper surface of drum 21 passes through the protective cover 12 of spot-welded photosurface 11.Due to welding stress Release, the depth of parallelism between photosurface 11 and 21 upper surface of drum needs to carry out again by laser light source 33 coaxial after decaying Secondary adjustment, the photosurface 11 of detector 1 can only be by adjusting drums 21 in installation part and disk 22 after being encapsulated by protective cover 12 Mating surface (i.e. the upper surface of three boss and disk 22 of drum 21), between 22 mounting surface 23 of Lai Shixian photosurface 11 and disk The depth of parallelism adjust.Specifically, when laser light source 33 issues a faint laser signal, single-photon detector 1 can be received simultaneously Respond a signal；It sets between drum 21 and disk 22 and passes through there are three boss since 3 points can determine a plane Continuously adjust with three boss of reconditioning, can obtain different between the photosurface 11 of detector 1 and the mounting surface 23 of disk 22 The depth of parallelism, single-photon detector 1 can correspond to the different depth of parallelisms, export the signal of varying strength.And work as the photosurface of detector 1 11 it is vertical with laser light source 33 when, the signal of output is most strong, therefore 1 output signal of detector can be made relatively strongest by one Position is determined as reaching the adjustment target parallel with end face is installed of detector 1.After adjusting, it is bolted drum 21 With the position of disk 22.

Secondly, adjusting the axially and radially position of 1 photosurface 11 and optical lens of detector.

For 1 photosurface 11 of single-photon detector with during the adjustment of optical lens, main is exactly to adjust along optical axis side To axial position and vertical optical axis center two radial directions position, due to optical lens optical path be convergence optical path, it is more past Hot spot is smaller afterwards, so when adjusting axial position using axial regulating mechanism, it should first move from the front to the back, until detection Hot spot on 1 photosurface 11 of device disappears or close to disappearance, then adjusts the regulating mechanism of three radial directions, then picks up hot spot, And keep hot spot as big as possible or take photosurface 11, then adjust axial position to, then adjust radial micromatic setting again, it is repeatedly more Secondary alternately to adjust axially and radially, hot spot minimum of going directly is most bright, and photosurface 11 is successfully aligned to the convergent point of optical lens.

Finally, the fixation of detector 1.

Axial regulating mechanism and radiai adjustment mechanism use differential thread mechanism, and the angle of rifling is designed as screw thread self-locking angle, And one end far from the second screw rod of the second differential part of radiai adjustment mechanism is equipped with jagged anti-skid chequer, with anti-skid chequer Second differential part is inserted into the groove of the first support sleeve 43, prevents from generating shift in position due to microvariations after adjustment in place.This Outside, three radiai adjustment mechanisms and an axial regulating mechanism are hollow structure, can be after being adjusted to position, by past Solidification glue is injected in hollow structure, and the radial and axial position of detector 1 is solidified, detector 1 can be prevented in transportational process In or vehicle, aircraft platform on movement when working, realize work of the detector 1 on the dynamic mounting platform such as vehicle-mounted, airborne It needs；The hollow structure of axial fine tuning structure can be also used for passing through for 1 Electric Wires & Cables 47 of detector, realize 1 line of detector The reasonable line arrangement of cable 47 increases engineering reasonability and the service life of the installation of detector 1.

Although the utility model is described by reference to preferred embodiment as above, the content is intended merely to The embodiment for being easy to understand the utility model and using is not intended to limit the utility model.Belonging to any the utility model Technical staff in technical field can implement under the premise of not departing from spirit and scope disclosed in the utility model Formal and details on make any modification and variation, but the scope of patent protection of the utility model, still must be with appended power Subject to the range that sharp claim is defined.

Claims (10)

1. a kind of fixed device of single-photon detector micron order adjustment characterized by comprising install detector installation part, Adjust the photosurface of detector debugging device, axial regulating mechanism and the radiai adjustment machine parallel with the mounting surface of installation part Structure, wherein the installation part includes disk and the drum that is arranged on disk, and the detector is fixed on the mounting surface, It is set on the lower surface of the drum there are three in the boss being arranged circumferentially, the upper surface of the boss and the disk connects Touching, the upper surface of the disk are the mounting surface.

2. the fixed device of single-photon detector micron order adjustment according to claim 1, which is characterized in that the adjustment dress Set the retainer including support frame and above support frame, the installation part setting on the support frame, the retainer it is upper Side is equipped with laser light source, and the disk of the installation part and the retainer are coaxial.

3. the fixed device of single-photon detector micron order adjustment according to claim 2, which is characterized in that support frame as described above Equipped with upper plate and lower plate, supporting and space is formed by three support columns between upper plate and lower plate, it is empty that the installation part is located at support In, and the disk is arranged at the center of the lower plate, and the lower surface of the lower plate sets that there are three stabilizer blades.

4. the fixed device of single-photon detector micron order adjustment according to claim 3, which is characterized in that the retainer On the upper plate, the inside of the retainer is equipped at least one horizontally disposed light attenuating filter piece for cylindrical and setting.

5. the fixed device of single-photon detector micron order adjustment according to claim 1, which is characterized in that the adjustment dress It installs in pneumatic table.

6. the fixed device of single-photon detector micron order adjustment according to claim 1, which is characterized in that the axial tune Saving mechanism includes the first screw rod, the first differential part and the first support sleeve, and first support sleeve is set in the first screw rod and first The outside of differential part, first screw rod include different the first external screw threads and the second external screw thread of screw pitch, first external screw thread Be inserted into the described first differential part and with its screw-internal thread fit, the internal screw thread matching of second external screw thread and the first support sleeve It closes, the first differential part being capable of sliding axially along the first support sleeve.

7. the fixed device of single-photon detector micron order adjustment according to claim 6, which is characterized in that described first is poor Moving part is provided with the installation part of detector on the end face far from the first screw rod, installation part is located at the outside of the first support sleeve, institute The inside for stating the first differential part is equipped with the connector connecting with detector, and connector connects with the cable being located in the debugging device It connects.

8. the fixed device of single-photon detector micron order adjustment according to claim 7, which is characterized in that outside described second Screw thread is equipped with the adjusting rod disk with anti-skidding ripple in the end far from the first differential part, is equipped with interior six inside adjusting rod disk Angle groove.

9. the fixed device of single-photon detector micron order adjustment according to claim 6, which is characterized in that the radial tune Saving mechanism includes three the second screw rods, three the second differential parts and second support sleeve, and second support sleeve includes axial Sleeve and three radial sleeves penetrated through with axial sleeve, the axial sleeve are arranged and are fixed in the outer of the first support sleeve Portion, the radial direction sleeve are set in the outside of the second screw rod and the second differential part, and second screw rod includes different the of screw pitch Three external screw threads and the 4th external screw thread, the third external screw thread be inserted into the second differential part and with its screw-internal thread fit, it is described 4th external screw thread matches with the internal screw thread of radial sleeve, and the second differential part can radially sleeve slide axially.

10. the fixed device of single-photon detector micron order adjustment according to claim 9, which is characterized in that described first The outer wall of support sleeve is equipped with cricoid groove, and the second differential part is equipped with the anti-skid chequer of dentation simultaneously far from one end of the second screw rod It is inserted into the groove, second screw rod is equipped with adjusting rod disk far from one end of the second differential part, inside adjusting rod disk Equipped with interior hexagonal groove.