CN201340481Y - Multi-faced reflector device - Google Patents
Multi-faced reflector device Download PDFInfo
- Publication number
- CN201340481Y CN201340481Y CNU200920129532XU CN200920129532U CN201340481Y CN 201340481 Y CN201340481 Y CN 201340481Y CN U200920129532X U CNU200920129532X U CN U200920129532XU CN 200920129532 U CN200920129532 U CN 200920129532U CN 201340481 Y CN201340481 Y CN 201340481Y
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- China
- Prior art keywords
- polygon mirror
- turning axle
- mirror device
- drive unit
- axial direction
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- Expired - Fee Related
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Abstract
The utility model provides a multi-faced reflector device, which comprises a rotating shaft capable of moving in the axial direction; two or more than two multi-faced reflectors are arranged on the rotating shaft, two or more than two reflecting surfaces are arranged on each multi-faced reflector, the reflecting surfaces are parallel to the rotating shaft in the axial direction, and numbers of reflecting surfaces on each multi-faced reflector are different. The utility model has advantages of simple structure, convenient operation and easy implementation. The multi-faced reflector device can select appropriate multi-faced reflectors flexibly according to actual demands, so as to meet the requirements on scanning depth and scanning speed.
Description
[technical field]
The utility model relates to optical image technology, especially a kind of polygon mirror device that satisfies the rapid scanning delay line device to the requirement of scan depths and sweep velocity.
[background technology]
(Optical Coherence Tomography is a kind of high resolving power, high sensitivity, noncontact, undamaged tomography technology OCT), thereby has a wide range of applications in biomedical context of detection optical coherence tomography.
The OCT technology exists the scanning of dual mode: longitudinal scanning (A-scan) and transversal scanning (B-scan).Longitudinal scanning in the OCT technology is the detection to the sample different depth, is to realize by the optical path difference that the optical delay line on the reference arm is regulated reference light and sample light.Simultaneously, the image taking speed of system depends on longitudinal scanning speed.And longitudinal scanning must have enough length, to reach imaging depth useful in the biological tissue, so longitudinal scanning is an OCT Study on Technology emphasis always.
Present widely used longitudinal scan device is that (Rapid ScanningOptical Delay Line, RSOD), as shown in Figure 1, reference light incides on the grating 10 rapid scanning delay line, realizes group delay by the pitch angle of frequency domain upper reflector 11.This device changes the longitudinal scanning degree of depth of OCT by the vibration angle size of galvanometer 12.The vibration frequency of galvanometer 12 has determined the sweep frequency of OCT system, and the vibration frequency of galvanometer 12 is limited, can't accomplish high-velocity scanning, thereby has restricted the real time imagery of OCT system.
[utility model content]
Technical problem to be solved in the utility model provides a kind of polygon mirror device that satisfies the rapid scanning delay line device to the requirement of scan depths and sweep velocity.
For solving the problems of the technologies described above, the utility model provides a kind of polygon mirror device, comprises the turning axle that can in axial direction move; Turning axle is provided with two or more polygon mirrors, is equipped with two or more reflectings surface on each polygon mirror, and reflecting surface is parallel with the axial direction of turning axle, the reflecting surface number difference on each polygon mirror.
In the utility model polygon mirror device, the number of reflecting surface is corresponding with the limit number of polygon mirror.The utility model polygon mirror device can substitute the galvanometer in the quick delayed sweep line.Number is N when the limit of polygon mirror, and then polygon mirror rotates a circle, and can carry out N scanning, so work as rotating speed one timing of reflecting rotating multisurface body, the raising that N can realize sweep velocity is counted on the limit that increases polygon mirror; The utility model polygon mirror device has the different reflecting surface of a plurality of reflecting surface numbers, when turning axle in axial direction moves to different positions, can make different polygon mirrors be in the working position, therefore can select suitable polygon mirror as required, it is big more that N is counted on the polygon mirror limit that is in the working position, then the angle of reflecting surface deflection is more little, and the corresponding system scan degree of depth is shallow more, and vice versa.Like this, adopt the utility model polygon mirror device can choose suitable polygon mirror according to actual needs neatly, to satisfy scan depths and sweep speed requirement.
On this basis, further:
Distance between the axial line of each reflecting surface and turning axle equates.
The utility model polygon mirror device can comprise that forming transmission with turning axle cooperates the drive unit that rotates with the driven in rotation axle.The rotating speed of drive unit can be selected as required.
The utility model polygon mirror device can comprise the propulsion system that turning axle is in axial direction moved.Under the driving of propulsion system, can make different polygon mirrors be in the working position.
As a kind of concrete form, the utility model polygon mirror device comprises platform, and drive unit is fixed on the platform, and turning axle and drive unit form transmission and be connected; Propulsion system and platform form that transmission cooperates so that platform and on drive unit, turning axle can move along the axial direction of turning axle.
Drive unit is optional with motor or belt transmission.
Propulsion system can be selected rack gearing or chain gearing for use.
The beneficial effects of the utility model are: simple in structure, easy to operate, implement easily.Adopt the utility model polygon mirror device can choose suitable polygon mirror according to actual needs neatly, to satisfy scan depths and sweep speed requirement.
[description of drawings]
Below by embodiment also in conjunction with the accompanying drawings, the utility model is described in further detail:
Fig. 1 is the synoptic diagram of a kind of longitudinal scan device in the prior art;
Synoptic diagram when Fig. 2 is the application of the utility model polygon mirror device;
Fig. 3 is that the master of the polygon mirror device among Fig. 2 looks synoptic diagram;
Fig. 4 is the schematic side view of the propulsion system of polygon mirror device shown in Figure 3;
Fig. 5 is turning axle 30, the polygon mirror of polygon mirror device shown in Figure 3, the schematic perspective view of motor 4;
Fig. 6 is the schematic top plan view of first polygon mirror 27;
Fig. 7 is the schematic top plan view of second polygon mirror 28;
Fig. 8 is the schematic top plan view of the 3rd polygon mirror 29.
[embodiment]
Fig. 2-Fig. 8 shows a kind of embodiment of the present utility model.
This polygon mirror device comprises turning axle 30, platform 50, propulsion system and drive unit.
As shown in Figure 3 with shown in Figure 4, drive unit is a motor 40, propulsion system comprise lifting motor 60 and tooth bar 62, motor 40 is fixed on the platform 50, and turning axle 30 is fixed on together with the rotating shaft of motor 40, and platform 50 is fixedlyed connected with tooth bar 62, lifting motor 60 is fixing, fixed cover is connected to gear 61 on the output shaft of lifting motor 60, and the teeth of the teeth of gear 61 and tooth bar 62 are suitable, and the teeth of the teeth of gear 61 and tooth bar 62 mesh together.Be fixed with first polygon mirror 27, second polygon mirror 28, the 3rd polygon mirror 29 on the differing heights on the turning axle 30.When motor 40 rotated, first polygon mirror 27 on the turning axle 30, second polygon mirror 28, the 3rd polygon mirror 29 rotated with turning axle 30; When lifting motor 60 rotates, gear 61 rotates, correspondingly tooth bar 62 moves up or down, platform 50 and on motor 40, turning axle 30, first polygon mirror 27, second polygon mirror 28, the 3rd polygon mirror 29 also move up or down with turning axle 30.
Shown in Fig. 3,5,6,7,8, first polygon mirror 27 is positive six prisms, second polygon mirror 28 is positive eight prisms, the 3rd polygon mirror 29 is positive ten prisms, first polygon mirror, 27 each reflecting surface 271 equate to the distance of the axial line of turning axle 30 to distance, the 3rd polygon mirror 29 each reflecting surface 291 of the axial line of turning axle 30 to distance, second polygon mirror, 28 each reflecting surface 281 of the axial line of turning axle 30, all are R.
Situation when Fig. 2 shows this polygon mirror application.During work, can by the adjustable height of lifting motor 60 control platforms 50,, and then can realize high-velocity scanning according to the requirement of concrete investigation depth and speed at different detection positions so that the polygon mirror of appropriate limit number is in the working position.Among Fig. 2, second polygon mirror 28 is in the working position.
The rotating speed of adjusting motor 40 can gated sweep speed.Lifting motor 60 rotates, and can make platform 50 declines, first polygon mirror 27 be in the working position, perhaps makes platform 50 risings, the 3rd polygon mirror 29 be in the working position, to obtain different scan depths.
Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.
Claims (7)
1, a kind of polygon mirror device is characterized in that: comprise the turning axle that can in axial direction move; Described turning axle is provided with two or more polygon mirrors, be equipped with two or more reflectings surface on each described polygon mirror, described reflecting surface is parallel with the axial direction of described turning axle, the described reflecting surface number difference on each described polygon mirror.
2, polygon mirror device according to claim 1 is characterized in that: the distance between the axial line of each described reflecting surface and described turning axle equates.
3, polygon mirror device according to claim 1 and 2 is characterized in that: comprise that forming transmission with described turning axle cooperates to drive the drive unit of described turning axle rotation.
4, polygon mirror device according to claim 3 is characterized in that: comprise the propulsion system that described turning axle is in axial direction moved.
5, polygon mirror device according to claim 4 is characterized in that: comprise platform, described drive unit is fixed on the described platform, and described turning axle and described drive unit form transmission and be connected; Described propulsion system and described platform form that transmission cooperates so that described platform and on described drive unit, turning axle can move along the axial direction of described turning axle.
6, polygon mirror device according to claim 5 is characterized in that: described drive unit is motor or belt transmission.
7, polygon mirror device according to claim 6 is characterized in that: described propulsion system are rack gearing or chain gearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200920129532XU CN201340481Y (en) | 2009-01-16 | 2009-01-16 | Multi-faced reflector device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200920129532XU CN201340481Y (en) | 2009-01-16 | 2009-01-16 | Multi-faced reflector device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201340481Y true CN201340481Y (en) | 2009-11-04 |
Family
ID=41236024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200920129532XU Expired - Fee Related CN201340481Y (en) | 2009-01-16 | 2009-01-16 | Multi-faced reflector device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201340481Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114779590A (en) * | 2022-06-01 | 2022-07-22 | 广东科视光学技术股份有限公司 | Exposure machine |
-
2009
- 2009-01-16 CN CNU200920129532XU patent/CN201340481Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114779590A (en) * | 2022-06-01 | 2022-07-22 | 广东科视光学技术股份有限公司 | Exposure machine |
| CN114779590B (en) * | 2022-06-01 | 2022-11-29 | 广东科视光学技术股份有限公司 | Exposure machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091104 Termination date: 20180116 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |