CN2486981Y

CN2486981Y - Optic element chang-over device

Info

Publication number: CN2486981Y
Application number: CN 01246741
Authority: CN
Inventors: 吴磊
Original assignee: Shanghai Institute of Laser Technology
Current assignee: Shanghai Institute of Laser Technology
Priority date: 2001-07-27
Filing date: 2001-07-27
Publication date: 2002-04-17
Anticipated expiration: 2011-07-27

Abstract

A switching device of optical elements comprises a fixed bracket (1), two ends of which are supported by a rotating axle (2) in the bracket (1) through a precision bearing (3) and are fixedly connected with a rotary stage (4) in the rotating axle (2). The rotary stage (4) is used to install the optical element that is required to be switched (A).The device can be used in a plurality of high precision optical instruments to conduct high positioning and high repeating precision switch of the optical element in the device, and the processing is simple and the manufacturing cost is low.

Description

The optical element switching device shifter

Invention field

The utility model relates to a kind of being used for high-precision optical instrument optical component is carried out height location, high repeatable accuracy device for switching.

Background technology

As everyone knows, in high precision instrument, tend to use unit and learn element, for example various laser instrument, because of the difference of laser work mode, the inside and outside or chamber sheet in chamber can have a lot of variations, also can increase various optical components, or on a cover system, need to realize that multi-wavelength switches.This switching requires to repeat, the bearing accuracy height, and precise guide rail adopts dovetail groove to carry out the switching of rectilinear motion mode more usually, and processing cost height and precision be cannot say for sure to demonstrate,prove.

Summary of the invention

Given this, the purpose of this utility model is to provide a kind of and can be used on the various high-precision optical instruments, and the optical component on it is carried out height location, high repeatable accuracy device for switching, this device processing is simple, production cost is low.

For achieving the above object, the utility model provides a kind of optical element switching device shifter, a kind of optical element switching device shifter, it is characterized in that, comprise: a fixed support, two ends are supported in a turning axle on the support by precision bearing respectively, are fixedly connected on the turntable on the turning axle, and described turntable is used to install the optical component of required switching.

Description of drawings

Fig. 1 is the broken section front view of first embodiment of the utility model optical component switching device shifter;

Fig. 2 is a side view embodiment illustrated in fig. 1;

Fig. 3 is a kind of YAG laser cure apparatus embodiment illustrated in fig. 1 that has, and switches to carry out dual wavelength;

Fig. 4 is the side elevation in partial section of second embodiment of the utility model optical component switching device shifter;

Fig. 5 is a kind of YAG laser cure apparatus embodiment illustrated in fig. 4 that has, with carry out continuous the acousto-optic Q modulation working method switch;

Fig. 6 is the side elevation in partial section of the 3rd embodiment of the utility model optical component switching device shifter;

Fig. 7 is a kind of pulsed YAG laser therapy apparatus embodiment illustrated in fig. 6 that has, with carry out optical fiber the light-conducting arm way of output switch; And

Fig. 8 is the synoptic diagram of expression the utility model optical component switching device shifter kind of drive.

Embodiment

Referring to Fig. 1 and Fig. 2, there is shown first embodiment of the utility model optical component switching device shifter, this device comprises a fixed support 1, one turning axle, 2 two ends are supported on the support 1 by precision bearing 3 respectively, be fixedly connected with a turntable 4 on turning axle 2, this turntable 4 is used to install the optical component A of required switching.

Said apparatus aims at assurance and designs around the X-axis of optical instrument light path, the repeatable accuracy of Y-axis pitching bidimensional.Because turntable 4 is fixedlyed connected with turning axle 2, so the angle precision of play X-axis, Y-axis pitching bidimensional depends on the repeatable accuracy to light path Z axle fully, and this angular deviation Δ β only relevant with axial length L with the clearance delta d of bearing 3 (ignoring part and material deformation):

Drift angle sin Δ β=2 Δ d/L

Wherein: 2 Δ d are relevant with bearing accuracy, and bearing accuracy is high more, and the gap is more little; When bearing accuracy one timing, L is long more, and the drift angle is more little.Therefore, select suitable bearing accuracy and turning axle axial length, just can obtain corresponding repeatable accuracy.And as prior art unnecessary, must be with linear motion guide rail, for example the precision of dovetail groove makes highly, therefore, at no difficulty of processing, when production cost is low, can guarantee height location, the high repeatable accuracy such with linear motion guide rail.

As shown in Figure 3, be that Fig. 1 and 2 illustrated embodiment is applied to the situation that continuous YAG laser cure apparatus carries out the switching of 1064nm/532nm dual wavelength.In this laser cure apparatus, the light path that dual wavelength switches is high anti-back resonator cavity sheet a, laser crystal bar b, laser cavity c, preceding resonator cavity sheet d, as shown in Figure 2, before resonator cavity sheet d be installed on the optical adjustment frame that is fixed on the turntable 4 on 5, at this moment, the axis of turning axle 2 is parallel with the light path Z-direction and at the center of instrument channel-section steel frame 6, rotate by manual or direct motor drive turning axle 2 like this, can drive turntable 2, preceding resonator cavity sheet d on optical adjustment frame 5 on it and the optical adjustment frame produces or changes over to light path, is in the light path as just showing among Fig. 2, optical adjustment frame on the external position.Because precision is by the decision of the precision of device itself, thus needn't adjust again precision after the switching each time, so easy to operate.

See also Fig. 4 and shown in Figure 5 again, there is shown second embodiment of the utility model optical component switching device shifter and be used for continuous YAG laser cure apparatus carry out continuous the acousto-optic Q modulation working method switch.As shown in Figure 5, the light path of this therapy apparatus is back resonator cavity sheet a, acousto-optic Q modulation switch b, laser crystal bar c, laser cavity d, preceding resonator cavity sheet e, and wherein the acousto-optic Q modulation switch is installed on the turntable in the utility model device.Because the big element of Q-switch is arranged in this light path, and the structure of embodiment one can't be dodged light path, so as shown in Figure 4 turntable 4 is adjusted, promptly the axis of turning axle 2 is parallel with the light path Z-direction, but is positioned at channel-section steel frame 6 outsides to avoid light path.

Other sees also Fig. 6 and shown in Figure 7, there is shown the 3rd embodiment of the utility model optical component switching device shifter and be used for the pulsed YAG laser therapy apparatus to carry out Guang Xian leaded light arm axle and go out the situation that mode is switched.

The light path of this pulsed YAG laser therapy apparatus is back resonator cavity sheet a, electric-optically Q-switched parts b, laser crystal bar c, laser cavity d, preceding resonator cavity sheet e, light-conducting arm f, and wherein, light-conducting arm f places on the turntable of the utility model device.In order to make mode of operation better,, and make rotation more steady on the turning axle 2, be provided with balance bob 7 on the other direction of turntable relatively.

Referring to shown in Figure 8, there is shown the kind of drive of the utility model device.In this figure, turning axle 2 is driven by motor 8, and this motor can be a deceleration direct current generator etc.Certainly, under the less demanding situation of robotization, also can adopt manual mode driven in rotation axle 2 to rotate.

Below in conjunction with a plurality of embodiment of the present utility model characteristics of the present utility model, effect and applicable cases have been described, but those of ordinary skill is appreciated that in the art, device of the present utility model also can be applicable in the various equipment that need switch optical component, on these these equipment, can be provided with stop part, with spacing to turntable; In addition, also can adopt device such as stepper motor to make to rotate quantitatively and rotate.Therefore, in the design scope of utility model, can also make multiple modification, these variations should equally with concrete feature as herein described belong in the scope of appended claims.

Claims

1. optical element switching device shifter, it is characterized in that, comprise: a fixed support (1), two ends are supported in a turning axle (2) on the support (1) by precision bearing (3) respectively, be fixedly connected on the turntable (4) on the turning axle (2), described turntable (4) is used to install the optical component (A) of required switching.

2. optical element switching device shifter as claimed in claim 1 is characterized in that the turning axle of described device is connected with motor.

3. optical element switching device shifter as claimed in claim 1 or 2 is characterized in that, oppositely is provided with equilibrate counterweight on the described turntable.

4. optical element switching device shifter as claimed in claim 1 is characterized in that described device is provided with position-limit mechanism.