CN105467552A - Mechanism for position adjustment of prism - Google Patents
Mechanism for position adjustment of prism Download PDFInfo
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- CN105467552A CN105467552A CN201510930828.1A CN201510930828A CN105467552A CN 105467552 A CN105467552 A CN 105467552A CN 201510930828 A CN201510930828 A CN 201510930828A CN 105467552 A CN105467552 A CN 105467552A
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- screw
- prism
- tractive
- seat
- screws
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
- G02B7/1805—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for prisms
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mounting And Adjusting Of Optical Elements (AREA)
Abstract
The invention relates to a mechanism for position adjustment of a prism. The mechanism comprises a stationary base, a locking screw sleeve, a movable base and a prism spindle which are disposed successively from outside to inside in the overall axial direction of the mechanism, wherein the prism spindle passes through the locking screen sleeve, the stationary base and the movable base; the movable base is disposed between the stationary base and the prism spindle in the vertical direction; three-dimensional adjustment is realized between the movable base and the stationary base via a three-push and three-pull structure or a two-push and two-pull structure or a screw-pressing spring push structure; spindle-centered angle displacement adjustment is realized through cylindrical face coordination between the prism spindle and the movable base, and the locking screw sleeve is used for locking of the degree of freedom; axial pre-tightening is carried out between the prism spindle and the movable base via a pre-tightening screw group; and a cuboid-shaped prism is adhered to the lower end of the prism spindle by a structural adhesive. The invention provides the mechanism for the position adjustment of the prism, and the four-dimensional adjustment can be implemented by the mechanism.
Description
Technical field
The invention belongs to optical precision instrument field, relate to a kind of prism, particularly relate to a kind of prism pose adjusting mechanism.
Background technology
In Optical Instrument Designing, according to the needs of actual light path, position and the direction of systematic optical axis often to be changed by prism.The adjustment of prism pose realizes by prism pose adjusting mechanism, and prism, as the modular optical element of one, under lab often adopts multidimensional adjusting table as its pose adjusting mechanism.Current domestic and international market has many enterprises being devoted to multidimensional adjusting table research and development, the product of these enterprises can meet the needs that in laboratory Experiments of Optics and detection, prism pose adjusts substantially.But for the component prism in optical instrument, the requirement of its adjusting mechanism used is easy to adjust, degree of regulation is high, good stability, and adjusting mechanism is often subject to the restriction of locus, it is completely satisfied that these require that the approved product on market is difficult to.In order to meet the needs of optical instrument, prism pose adjusting mechanism usually wants designed, designed.
Summary of the invention
For to realize in background technology mention the needs of optical instrument, the invention provides a kind of prism pose adjusting mechanism, to meet the demand of small scale prism various dimensions accurate adjustment.
Technical scheme provided by the present invention is: a kind of prism pose adjusting mechanism, and its special character is: comprise stationary seat that whole mechanism axially sets gradually from outside to inside, locking swivel nut, dynamic seat, prism rotating shaft, block prism; Described prism rotating shaft through locking swivel nut and dynamic seat;
Dynamic seat is provided with in the vertical direction between described locking swivel nut and prism rotating shaft;
Described prism rotating shaft lower end connects block prism;
Described prism rotating shaft and dynamic seat realize axial pretightening by pre-loading screw group;
The surface of contact of described prism rotating shaft and dynamic seat is at least provided with two for installing the screw hole of pre-loading screw group; The surface of contact of described dynamic seat and prism rotating shaft is provided with ring-type deep gouge;
The arcuate socket with the screw hole equivalent on the surface of contact of prism rotating shaft and dynamic seat is provided with bottom described deep gouge;
The surface of contact of described prism rotating shaft and dynamic seat is provided with uniform screw hole;
Described prism rotating shaft and the surface of contact of locking swivel nut are provided with for screwing in the thread segment of locking swivel nut;
Described stationary seat and dynamic seat by pushing tow set screws or/and tractive set screws is connected;
The same of described stationary seat end face is circumferentially evenly equipped with three or four or six holes;
When stationary seat end face same is circumferentially evenly equipped with three holes, three holes are through hole; Described stationary seat is connected by means of only tractive set screws with dynamic seat; Described tractive set screws comprises the first tractive screw, the second tractive screw, the 3rd tractive screw; Screw section between described stationary seat and dynamic seat is arranged with the Compress Spring of the position orientation relation for keeping stationary seat and dynamic seat;
When stationary seat end face same is circumferentially evenly equipped with four holes, wherein two be screw, two be through hole; What coordinate with two screws has the first pushing tow screw and the second pushing tow screw; What coordinate with two through holes has the first tractive screw and the second tractive screw; Described stationary seat end face arranges two pushing tow screws at 0 °, 180 °, arranges that two tractive screws form two and push up two annexations of drawing at 90 °, 270 °; Described tractive screw and stationary seat surface of contact are ball-and-socket contact structures; Three pushing tow screw upper end bulbs form higher pair with dynamic seat outer shroud end face and contact;
When stationary seat end face same is circumferentially evenly equipped with six holes, wherein three be screw, three be through hole; Described screw and through hole are intervally arranged; What coordinate with three screws has the first pushing tow screw, the second pushing tow screw, the 3rd pushing tow screw; What coordinate with two screws has the first tractive screw, the second tractive screw, the 3rd tractive screw; Described stationary seat and dynamic seat form three by pushing tow set screws and tractive set screws and push up three annexations of drawing; Three pushing tow screws that described pushing tow set screws comprises screw in three screws on stationary seat, and three pushing tow screw upper end bulbs form higher pair with dynamic seat outer shroud end face and contact; Three tractive screws that described tractive set screws comprises, through three through holes on stationary seat, are connected with three screws on dynamic seat end face; Described tractive screw and stationary seat surface of contact are sphere-contact structure;
Above-mentioned stationary seat is at least provided with three for whole prism pose adjusting mechanism being fixed on the through hole on the assembling base plane of optical system;
Above-mentioned pre-loading screw group comprises at least two pre-loading screw; Above-mentioned pre-loading screw is made up of hexagon socket cap head screw, rubber bullet pad and two teflon skidding;
End cylindrical section two end mill of above-mentioned prism rotating shaft is put down for installing control hand wheel.
Advantage of the present invention is: prism pose adjusting mechanism one-piece construction provided by the present invention has the advantages that rigidity is high, vibration resistance is strong, degree of regulation is high, solve limited design space and high precision regulate between contradiction.As governor motion, it regulates resolving power to be also an important criterion.This prism pose adjusting mechanism all adopts manual adjustments, and wherein the angle of pitch and deflection angle regulate and realized by six special closely-pitched hexagon socket cap head screws, and the mode that top drawknot closes not only can realize minute adjustment can realize reliable locking simultaneously.
Prism pose adjusting mechanism of the present invention can realize three-dimensional regulation, comprises angle of pitch range of adjustment: ± 2 °; Deflection angle range of adjustment: ± 2 °; Rotation range of adjustment around the shaft: ± 5 °, the straight-line displacement range of adjustment of rotor shaft direction: ± 3 ㎜; The range of adjustment of these four degree of freedom can meet the actual needs of optical detection engineering.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention (positive view).
Fig. 2 is external structure schematic diagram (vertical view) of the present invention.
Fig. 3 is axonometric drawing of the present invention.
Fig. 4 is the use illustration of the present invention in optical system.
Fig. 5 is prism rotating shaft front view and vertical view
Wherein, 1 ?locking swivel nut, 2 ?stationary seats, 3 ?move seat, 4 ?prism rotating shafts, 5 ?block prisms, 6 ?pushing tow set screws, 61 ?first pushing tow screws, 62 ?second pushing tow screws, 63 ?the 3rd pushing tow screw, 7 ?tractive set screws, 71 ?first tractive screws, 72 ?second tractive screws, 73 ?the 3rd tractive screw, 8 ?pre-loading screw groups, 81 ?first pre-loading screw assemblies, 82 ?second pre-loading screw assemblies, 83 ?the 3rd pre-loading screw assembly, 9 ?stationary seat connecting holes, 10 ?prism pose adjusting mechanisms.
Embodiment
See figure 1 ?5, a kind of prism pose adjusting mechanism, comprises stationary seat 2 that whole mechanism axially sets gradually from outside to inside, locking swivel nut 1, dynamic seat 3, prism rotating shaft 4, block prism 5; Prism rotating shaft 4 through locking swivel nut 1 and dynamic seat 3; Dynamic seat 3 is provided with in the vertical direction between locking swivel nut 1 and prism rotating shaft 4; Prism rotating shaft 4 lower end is bonded with block prism 5 by construction adhesive; Prism rotating shaft 4 and dynamic seat realize axial pretightening by pre-loading screw group 8; Prism rotating shaft 4 and the surface of contact of dynamic seat 3 are at least provided with two for installing the screw hole of pre-loading screw group 8; Dynamic seat 3 is provided with ring-type deep gouge with the surface of contact of prism rotating shaft 4; The arcuate socket with the screw hole equivalent on the surface of contact of prism rotating shaft 4 and dynamic seat 3 is provided with bottom deep gouge; Prism rotating shaft 4 and the surface of contact of dynamic seat 3 are provided with uniform screw hole; Prism rotating shaft 4 and the surface of contact of locking swivel nut 1 are provided with for screwing in the thread segment of locking swivel nut; Stationary seat 2 is connected with tractive set screws 7 by pushing tow set screws 6 with dynamic seat 3; Pushing tow set screws 6 comprises the first pushing tow screw 61, second pushing tow screw 62, the 3rd pushing tow screw 63; Tractive set screws 7 comprises the first tractive screw 71, second tractive screw 72, the 3rd tractive screw 73; The same of stationary seat 2 end face is circumferentially evenly equipped with three or four or six holes;
When stationary seat end face same is circumferentially evenly equipped with three holes, three holes are through hole; Stationary seat 2 is connected by means of only tractive set screws 7 with dynamic seat 3; Tractive set screws 7 comprises the first tractive screw 71, second tractive screw 72, the 3rd tractive screw 73; Screw section between stationary seat 2 and dynamic seat 3 is arranged with the Compress Spring of the position orientation relation for keeping stationary seat 2 and dynamic seat 3;
When stationary seat 2 end face same is circumferentially evenly equipped with four holes, wherein two screws, two through holes; Pushing tow set screws 6 comprises the first pushing tow screw 61, second pushing tow screw 62; Tractive set screws 7 comprises the first tractive screw 71, second tractive screw 72; Stationary seat 2 end face arranges two pushing tow screws at 0 °, 180 °, arranges that two tractive screws form two and push up two annexations of drawing at 90 °, 270 °; Tractive screw and stationary seat surface of contact are ball-and-socket contact structures; Three pushing tow screw upper end bulbs form higher pair with dynamic seat outer shroud end face and contact;
When stationary seat 2 end face same is circumferentially evenly equipped with six holes, wherein three screws, three through holes; Screw and through hole are intervally arranged; Pushing tow set screws 6 comprises the first pushing tow screw 61, second pushing tow screw 62, the 3rd pushing tow screw 63; Tractive set screws 7 comprises the first tractive screw 71, second tractive screw 72, the 3rd tractive screw 73; Stationary seat 2 forms the annexation of drawing on three tops three with dynamic seat 3 by pushing tow set screws 6 and tractive set screws 7; Three pushing tow screws that pushing tow set screws 6 comprises screw in three screws on stationary seat 2, and three pushing tow screw upper end bulbs form higher pair with dynamic seat 3 outer shroud end face and contact; Three tractive screws that tractive set screws 7 comprises, through three through holes on stationary seat 2, are connected with three screws on dynamic seat 3 end face; Tractive screw and stationary seat 2 surface of contact are sphere-contact structure;
Stationary seat 2 is at least provided with three for whole prism pose adjusting mechanism being fixed on the through hole on the assembling base plane of optical system;
Pre-loading screw group 8 comprises at least two pre-loading screw; Pre-loading screw is made up of hexagon socket cap head screw, rubber bullet pad and two teflon skidding;
End cylindrical section two end mill of prism rotating shaft is put down for installing control hand wheel.
Prism pose adjusting mechanism can be divided into the straight-line displacement governor motion of angle of pitch governor motion, deflection angle governor motion, rotation regulating mechanism around the shaft, rotor shaft direction by function, and each several part is an organic whole by precision-fit connection.
Block prism is bonding with prism rotating shaft by construction adhesive, and specific technique for sticking should be adopted to guarantee, and the microstress of block prism is bonding.
Described block prism 5 is bonding with prism rotating shaft 4 by construction adhesive, for guaranteeing that block prism 5 produces less adhesive stress in bonding, after requiring bonding, bondline thickness and gum spot area meet certain requirements, and the bonding plane of prism rotating shaft 4 requires to have higher flatness;
Described prism rotating shaft 4 with dynamic seat 3 for the small―gap suture face of cylinder coordinates, three uniform screw holes are provided with in the step surface of prism rotating shaft 4, the large end face of dynamic seat 3 there is ring-type deep gouge, have the arcuate socket that three uniform bottom deep gouge, described prism rotating shaft 4 realizes axial pretightening with dynamic seat 3 by pre-loading screw group 8; Described pre-loading screw assembly 81,82,83 is made up of hexagon socket cap head screw, rubber bullet pad and two teflon skidding, and the size of adjustment axial pre tightening force, guarantees that prism rotating shaft 4 can reliably be rotated; End cylindrical section two end mill of prism rotating shaft 4 is put down for installing control hand wheel.The shape of described stationary seat is not limited to rectangle, and can need to carry out Interface design according to the restriction of system.
As shown in Figure 1 to Figure 3, this prism pose adjusting mechanism can be divided into three layers from top to bottom from space layout, bears different functions respectively.Stationary seat 2 forms the connected mode of drawing on three tops three with dynamic seat 3 by pushing tow set screws 6 and tractive set screws 7, and is drawn by the top of the first pushing tow screw 61, second pushing tow screw 62, the 3rd pushing tow screw 63 and the first tractive screw 71, second tractive screw 72, the 3rd tractive screw 73 and realize that prism pitching angle regulates, deflection angle regulates and straight-line displacement along rotor shaft direction regulates.In addition, also can adopt the connected mode that two tops two are drawn between stationary seat 2 and dynamic seat 3, by regulating 0 °, 180 ° two pushing tow screws and 90 °, 270 ° two tractive screws to realize, prism pitching angle regulates this mode, deflection angle regulates and regulates with the straight-line displacement along rotor shaft direction; The third situation, according to three tractive screws between stationary seat 2 and dynamic seat 3, and the screw section between stationary seat 2 and dynamic seat 3 arranges the connected mode of Compress Spring, then only need regulate three tractive screws, can realize the adjustment of above-mentioned Three Degree Of Freedom.
Described prism rotating shaft 4 with dynamic seat 3 for the small―gap suture face of cylinder coordinates, three uniform screw holes are provided with in the step surface of prism rotating shaft 4, the large end face of dynamic seat there is ring-type deep gouge, have the arcuate socket that three uniform bottom deep gouge, described prism rotating shaft 4 realizes axial pretightening with dynamic seat 3 by three pre-loading screw groups; Described pre-loading screw group 8 is made up of hexagon socket cap head screw, rubber bullet pad and two teflon skidding, and the size of adjustment axial pre tightening force, guarantees that prism rotating shaft 4 can reliably be rotated; End cylindrical section two end mill of prism rotating shaft 4 is put down for installing control hand wheel.
Described locking swivel nut 1 screws in the thread segment of prism rotating shaft 4, and prism 5, after the angular displacement of prism rotating shaft 4 axis is adjusted to the right place, screws locking swivel nut 1 and makes its end face and dynamic seat inner ring end face compress the locking realizing prism rotating shaft 4;
Described prism pose adjusting mechanism prism attachment face diameter is of a size of 15mm, can be less than the small scale block prism of 10mm by bonding major cross sectional dimension.The bonding plane of prism rotating shaft mills out deep gouge on the cylinder end face that diameter dimension is 15mm as shown in Figure 5, two end mills of deep gouge lead to, afterwards deep gouge is ground, require that bonding plane has good flatness, for guaranteeing that block prism produces less adhesive stress in bonding, after requiring bonding, bondline thickness and gum spot area meet certain requirements, and clearance gauge usually can be used to ensure gap and the bondline thickness of prism and bonding plane at the two ends of groove bonding plane.
This prism pose adjusting mechanism regulates the straight-line displacement of the angle of pitch, deflection angle, rotation around the shaft, rotor shaft direction respectively by handwheel and special closely-pitched hexagon socket cap head screw.According to requirements, prism pose adjusting mechanism can use micro-step motor to replace handwheel and special closely-pitched hexagon socket cap head screw to regulate Automated condtrol to realize prism pose adjusting mechanism.
Claims (4)
1. a prism pose adjusting mechanism, is characterized in that: comprise stationary seat that whole mechanism axially sets gradually from outside to inside, locking swivel nut, dynamic seat, prism rotating shaft, block prism; Described prism rotating shaft through locking swivel nut and dynamic seat;
Dynamic seat is provided with in the vertical direction between described locking swivel nut and prism rotating shaft;
Described prism rotating shaft lower end connects block prism;
Described prism rotating shaft and dynamic seat realize axial pretightening by pre-loading screw group;
The surface of contact of described prism rotating shaft and dynamic seat is at least provided with two for installing the screw hole of pre-loading screw group; The surface of contact of described dynamic seat and prism rotating shaft is provided with ring-type deep gouge;
The arcuate socket with the screw hole equivalent on the surface of contact of prism rotating shaft and dynamic seat is provided with bottom described deep gouge;
The surface of contact of described prism rotating shaft and dynamic seat is provided with uniform screw hole;
Described prism rotating shaft and the surface of contact of locking swivel nut are provided with for screwing in the thread segment of locking swivel nut;
Described stationary seat and dynamic seat by pushing tow set screws or/and tractive set screws is connected;
The same of described stationary seat end face is circumferentially evenly equipped with three or four or six holes;
When stationary seat end face same is circumferentially evenly equipped with three holes, three holes are through hole; Described stationary seat is connected by means of only tractive set screws with dynamic seat; Described tractive set screws comprises the first tractive screw, the second tractive screw, the 3rd tractive screw; Screw section between described stationary seat and dynamic seat is arranged with the Compress Spring of the position orientation relation for keeping stationary seat and dynamic seat;
When stationary seat end face same is circumferentially evenly equipped with four holes, wherein two be screw, two be through hole; What coordinate with two screws has the first pushing tow screw and the second pushing tow screw; What coordinate with two through holes has the first tractive screw and the second tractive screw; Described stationary seat end face arranges two pushing tow screws at 0 °, 180 °, arranges that two tractive screws form two and push up two annexations of drawing at 90 °, 270 °; Described tractive screw and stationary seat surface of contact are ball-and-socket contact structures; Three pushing tow screw upper end bulbs form higher pair with dynamic seat outer shroud end face and contact;
When stationary seat end face same is circumferentially evenly equipped with six holes, wherein three be screw, three be through hole; Described screw and through hole are intervally arranged; What coordinate with three screws has the first pushing tow screw, the second pushing tow screw, the 3rd pushing tow screw; What coordinate with two screws has the first tractive screw, the second tractive screw, the 3rd tractive screw; Described stationary seat and dynamic seat form three by pushing tow set screws and tractive set screws and push up three annexations of drawing; Three pushing tow screws that described pushing tow set screws comprises screw in three screws on stationary seat, and three pushing tow screw upper end bulbs form higher pair with dynamic seat outer shroud end face and contact; Three tractive screws that described tractive set screws comprises, through three through holes on stationary seat, are connected with three screws on dynamic seat end face; Described tractive screw and stationary seat surface of contact are sphere-contact structure.
2. a kind of prism pose adjusting mechanism according to claim 1, is characterized in that: described stationary seat is at least provided with three for whole prism pose adjusting mechanism being fixed on the through hole on the assembling base plane of optical system.
3. a kind of prism pose adjusting mechanism according to claim 1 and 2, is characterized in that: described pre-loading screw group comprises at least two pre-loading screw; Described pre-loading screw is made up of hexagon socket cap head screw, rubber bullet pad and two teflon skidding.
4. a kind of prism pose adjusting mechanism according to claim 3, is characterized in that: end cylindrical section two end mill of described prism rotating shaft is put down for installing control hand wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510930828.1A CN105467552B (en) | 2015-12-12 | 2015-12-12 | A kind of prism pose adjustment mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510930828.1A CN105467552B (en) | 2015-12-12 | 2015-12-12 | A kind of prism pose adjustment mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105467552A true CN105467552A (en) | 2016-04-06 |
| CN105467552B CN105467552B (en) | 2018-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510930828.1A Expired - Fee Related CN105467552B (en) | 2015-12-12 | 2015-12-12 | A kind of prism pose adjustment mechanism |
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| CN (1) | CN105467552B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110187464A (en) * | 2019-06-03 | 2019-08-30 | 北京科益虹源光电技术有限公司 | A kind of prism clamping fixture with safeguard structure of no pivoting friction |
| CN113189833A (en) * | 2021-03-30 | 2021-07-30 | 杭州行开医学影像技术有限公司 | 3D image shooting structure |
Citations (5)
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| US20050090740A1 (en) * | 2003-10-27 | 2005-04-28 | Siemens Medical Solutions Usa, Inc. | Artifact reduction for volume acquisition |
| US20090073562A1 (en) * | 2007-09-19 | 2009-03-19 | Victor Company Of Japan, Limited | Image fluctuation correcting apparatus |
| CN201222113Y (en) * | 2008-06-05 | 2009-04-15 | 天津工程师范学院 | Fixed device for contact type pyramid prism |
| CN201637918U (en) * | 2010-01-25 | 2010-11-17 | 利达光电股份有限公司 | Prism adjusting mechanism in projection system |
| CN205301683U (en) * | 2015-12-12 | 2016-06-08 | 中国科学院西安光学精密机械研究所 | Prism position appearance guiding mechanism |
-
2015
- 2015-12-12 CN CN201510930828.1A patent/CN105467552B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050090740A1 (en) * | 2003-10-27 | 2005-04-28 | Siemens Medical Solutions Usa, Inc. | Artifact reduction for volume acquisition |
| US20090073562A1 (en) * | 2007-09-19 | 2009-03-19 | Victor Company Of Japan, Limited | Image fluctuation correcting apparatus |
| CN201222113Y (en) * | 2008-06-05 | 2009-04-15 | 天津工程师范学院 | Fixed device for contact type pyramid prism |
| CN201637918U (en) * | 2010-01-25 | 2010-11-17 | 利达光电股份有限公司 | Prism adjusting mechanism in projection system |
| CN205301683U (en) * | 2015-12-12 | 2016-06-08 | 中国科学院西安光学精密机械研究所 | Prism position appearance guiding mechanism |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110187464A (en) * | 2019-06-03 | 2019-08-30 | 北京科益虹源光电技术有限公司 | A kind of prism clamping fixture with safeguard structure of no pivoting friction |
| CN113189833A (en) * | 2021-03-30 | 2021-07-30 | 杭州行开医学影像技术有限公司 | 3D image shooting structure |
| CN113189833B (en) * | 2021-03-30 | 2022-07-05 | 杭州行开医学影像技术有限公司 | 3D image shooting structure |
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| CN105467552B (en) | 2018-01-19 |
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