An optical device for indicating the position of a laser beam

Abstract

The utility model discloses an optical device for indicating laser beam position, including objective lens module, eyepiece module and the optical module of being located between objective lens module and eyepiece module, the optical module is used for emitting, collimating laser beam and indicating light beam, the optical module still is equipped with reflection module and is reflected to laser beam and indicating light beam make laser beam enter objective lens module, and indicating light beam enters objective lens module and eyepiece module. The utility model discloses an optical device for indicating laser beam position utilizes multiband light source emission module to emit laser beam and indicating light beam simultaneously, guarantees two kinds of light beam output angle consistent and coincides or nearly coincides, need not respectively to two kinds of light beam are debugged, can guarantee two kinds of light beam focal point position coincides or nearly coincides, and then realizes indicating light beam pays the purpose of laser beam position indication.

Description

Technical Field

[0001] This utility model relates to the field of cell microsurgical manipulation technology, and in particular to an optical device for positioning a laser beam. Background Technology

[0002] In cellular microsurgery equipment, high-energy laser beams are used to cut and treat tiny objects such as cells. For example, in the field of embryo micromanipulation, near-infrared laser beams are commonly used to drill and cut the zona pellucida of embryos.

[0003] During laser beam therapy, operators need to use a microscope to observe cells under a microscope. However, the high-energy laser beams used to cut and treat cells are usually in an unobservable band (invisible to the human eye and cannot be imaged by conventional microscope cameras). The operator's eyes cannot directly observe the focusing position of the treatment laser beam, so an indicator beam is needed to indicate the position of the laser beam. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model discloses an optical device for indicating the position of a laser beam.

[0005] An optical device for indicating the position of a laser beam includes an objective lens module, an eyepiece module, and an optical module disposed between the objective lens module and the eyepiece module. The optical module is used to emit and collimate a laser beam and an indicator beam. The optical module is also provided with a reflection module to reflect the laser beam and the indicator beam so that the laser beam enters the objective lens module and the indicator beam enters the objective lens module and the eyepiece module.

[0006] The eyepiece module includes a reflector, a tube mirror, and an eyepiece, with the reflective surface of the reflector facing the optical module and the tube mirror; it also includes an imaging module, which includes a camera and a beam splitter, the beam splitter being used to allow an indicator beam to enter the eyepiece and the camera.

[0007] Specifically, after being emitted and collimated by the optical module, a laser beam and an indicator beam with the same angle are obtained. The laser beam enters the objective lens module, and the indicator beam enters both the objective lens module and the eyepiece module. The focal points of the laser beam and the indicator beam entering the objective lens module are almost coincident (and parallel) or coincident. Therefore, the focal position of the indicator beam observed by the eyepiece module can be regarded as the focal position of the laser beam, that is, the visualization of the focal position of the laser beam is realized.

[0008] If the human eye needs to observe the focal position of the indicator beam through the eyepiece, the indicator beam must be selected as visible light. The focal position of the indicator beam should be observed by taking an image with a camera. The wavelength of the indicator beam should be selected to be image-capable.

[0009] Preferably, the optical module includes a multi-band light source module for emitting, collimating, and indicating laser beams.

[0010] Preferably, the reflection module includes a beam splitter and a reflecting prism. The beam splitter is disposed between the multi-band light source module and the reflecting prism. Both sides of the beam splitter can reflect the light beam, with one side facing the multi-band light source module and the objective lens module. The reflecting prism is used to reflect the incident light coaxially and in opposite directions.

[0011] Specifically, using a reflecting prism to reflect the incident light coaxially and in opposite directions ensures that the angle of the reflected beam is consistent, thereby effectively improving the coincidence between the focal position of the indicator beam and the focal position of the laser beam.

[0012] Preferably, the reflecting prism is a pyramidal reflecting prism or a plane reflecting prism.

[0013] Specifically, a cornerstone prism can reflect incident light from any incident angle in a coaxial and opposite direction. Alternatively, the position and angle of a plane prism or other ordinary reflecting prism can be adjusted to achieve the same purpose of reflecting incident light in a coaxial and opposite direction.

[0014] Preferably, the side of the beam splitter facing the multi-band light source module and the objective lens module can also transmit the light beam. The side of the beam splitter facing the multi-band light source module and the objective lens module has low transmittance and high reflectance for the laser beam, and its transmittance and reflectance for the indicator beam are comparable.

[0015] Specifically, the laser beam is mainly used to treat cells and embryos located in the objective module. Therefore, most of the laser beam is reflected by the beam splitter and enters the objective module. The indicator beam is used to indicate the focal position of the laser beam. Therefore, part of the indicator beam needs to be reflected along with the laser beam, and the focal point of the reflected indicator beam is almost coincident with or coincident with the focal point of the laser beam. Another part of the indicator beam is transmitted through the beam splitter and then reflected by the reflecting prism, and finally reflected by the beam splitter and enters the eyepiece module. This allows the operator to observe the focal position of the indicator beam in the eyepiece module, thus realizing the visualization of the focal position of the laser beam.

[0016] Preferably, the objective module includes a microscope objective and a stage, the culture dish is placed on the stage, and the microscope objective is located between the stage and the beam splitter.

[0017] Specifically, microscope objectives are used to perform microscopic imaging of embryos or cells in culture dishes and to focus laser beams.

[0018] Preferably, it also includes a moving device for moving the position of the multi-band light source module.

[0019] Preferably, the multi-band light source module includes a multi-band light source and a collimating lens, and the moving device includes a rotary motor and an arc-shaped guide rail. The rotary motor drives the multi-band light source module to move along the arc-shaped guide rail to adjust its angle.

[0020] Preferably, the multi-band light source module includes a multi-band light source, a collimating lens, and a deflecting lens. The collimating lens is disposed between the multi-band light source and the deflecting lens. The moving device includes a linear motor and a linear guide rail. The linear motor drives the multi-band light source and the collimating lens to move along the linear guide rail to adjust their positions.

[0021] Compared with the prior art, the advantages of this utility model are:

[0022] By utilizing a multi-band light source module to emit laser beams and indicator beams sequentially or simultaneously, the output angles of the two beams are ensured to be consistent and coincident or nearly coincident. Without the need to adjust the two beams separately, the focal positions of the two beams can be guaranteed to coincide or nearly coincide. The sequential / simultaneous emission, combined with the characteristic of the cornerstone reflecting prism to reflect the incident light coaxially and in opposite directions, effectively improves the coincidence between the focal position of the indicator beam and the focal position of the laser beam. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the optical device for indicating the position of a laser beam disclosed in this utility model;

[0024] Figure 2 This is a schematic diagram of the incident light beam at an inclined angle for the optical device used to indicate the position of a laser beam disclosed in this utility model;

[0025] Figure 3 This is a schematic diagram of an incident light beam at another tilt angle for the optical device disclosed in this utility model for indicating the position of a laser beam;

[0026] Figure 4 This is a schematic diagram of the optical device (with deflecting lens) for indicating the position of a laser beam disclosed in this utility model.

[0027] Figure 5 This is a schematic diagram of the incident light beam at an inclined angle (with a deflecting lens) of the optical device for indicating the position of a laser beam disclosed in this utility model.

[0028] Figure 6 This is a schematic diagram of another angled incident light beam (with a deflecting lens) of the optical device disclosed in this utility model for indicating the position of a laser beam. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0030] like Figure 1-3 As shown, an optical device for indicating the position of a laser beam includes an objective lens module, an eyepiece module, and an optical module 10 disposed between the objective lens module and the eyepiece module. The optical module 10 is used to emit and collimate the laser beam and the indicator beam. The optical module 10 is also provided with a reflection module to reflect the laser beam and the indicator beam so that the laser beam enters the objective lens module and the indicator beam enters the objective lens module and the eyepiece module.

[0031] The eyepiece module includes a reflector 31, a tube lens 32, and an eyepiece 33, with the reflective surface of the reflector 31 facing the optical module and the tube lens 32; it also includes an imaging module, which includes a camera 42 and a beam splitter 41, with the beam splitter 41 used to allow the indicator beam to enter the eyepiece 33 and the camera 42.

[0032] After being emitted and collimated by the optical module 10, a laser beam and an indicator beam with the same angle are obtained. The laser beam enters the objective lens module, and the indicator beam enters the objective lens module and the eyepiece module. The focal points of the laser beam and the indicator beam entering the objective lens module are almost coincident (and parallel) or coincident. Therefore, the focal position of the indicator beam observed by the eyepiece module can be regarded as the focal position of the laser beam, that is, the visualization of the focal position of the laser beam is realized.

[0033] If the human eye needs to observe the focal position of the indicator beam through the eyepiece, the indicator beam must be selected as visible light. The focal position of the indicator beam should be observed by taking an image with a camera. The wavelength of the indicator beam should be selected to be image-capable.

[0034] The optical module 10 is equipped with a multi-band light source module for emitting, collimating, and indicating laser beams.

[0035] The reflection module includes a beam splitter 12 and a reflecting prism. The beam splitter 12 is located between the multi-band light source module and the reflecting prism. Both sides of the beam splitter 12 can reflect the light beam, with one side facing the multi-band light source module and the objective lens module. The reflecting prism is used to reflect the incident light coaxially and in opposite directions.

[0036] By using a reflecting prism to reflect the incident light coaxially and in opposite directions, the angle of the reflected beam can be kept consistent, thereby effectively improving the coincidence between the focal position of the indicator beam and the focal position of the laser beam.

[0037] The reflecting prism is either a pyramidal reflecting prism or a plane reflecting prism.

[0038] A pyramidal reflecting prism can reflect incident light in the same direction but in opposite directions at any incident angle. Alternatively, the position and angle of a plane reflecting prism or other ordinary reflecting prism can be adjusted to achieve the same direction of reflection of incident light in the same direction.

[0039] The beam splitter 12 facing the multi-band light source module and objective lens module can also transmit the beam. The side of the beam splitter 12 facing the multi-band light source module and objective lens module has low transmittance and high reflectance for the laser beam, and its transmittance and reflectance for the indicator beam are similar.

[0040] The laser beam is mainly used to treat cells and embryos located in the objective module. Therefore, most of the laser beam is reflected by the beam splitter 12 and enters the objective module. The indicator beam is used to indicate the focal position of the laser beam. Therefore, part of the indicator beam needs to be reflected along with the laser beam, and the focal point of the reflected indicator beam is almost coincident with or coincident with the focal point of the laser beam. The other part of the indicator beam is transmitted through the beam splitter 12 and enters the eyepiece module, so that the operator can observe the focal position of the indicator beam in the eyepiece module, thus realizing the visualization of the focal position of the laser beam.

[0041] The objective module includes a microscope objective 21 and a stage 22. The culture dish is placed on the stage 22, and the microscope objective 21 is located between the stage 22 and the beam splitter 12.

[0042] The microscope objective 21 is used for microscopic imaging of embryos or cells in a culture dish and for focusing a laser beam.

[0043] It also includes a moving device 15 for moving the position of the multi-band light source module.

[0044] The multi-band light source module includes a multi-band light source 11 and a collimating lens 14. The moving device 15 includes a rotary motor and an arc-shaped guide rail. The rotary motor drives the multi-band light source module to move along the arc-shaped guide rail to adjust its angle.

[0045] like Figure 4-6 As shown, the multi-band light source module includes a multi-band light source 11, a collimating lens 14, and a deflecting lens 16. The collimating lens 14 is located between the multi-band light source 11 and the deflecting lens 16. The moving device 15 includes a linear motor and a linear guide rail. The linear motor drives the multi-band light source 11 and the collimating lens 14 to move along the linear guide rail to adjust their positions.

[0046] In practical use, the laser beam and the indicator beam are emitted sequentially or simultaneously from the multi-band light source 11. The two beams overlap or are collimated into nearly overlapping parallel beams after passing through the collimating lens 14. Then, the laser beam is reflected by the beam splitter 12 and enters the objective lens module. Subsequently, the laser beam is focused on the designated position of the cells or embryos in the culture dish placed on the stage 22 for treatment. Part of the indicator beam is reflected by the beam splitter 12 and focused at the same or nearly the same position as the laser beam. Another part is transmitted through the beam splitter 12 and enters the corner bevel reflecting prism 13. The corner bevel reflecting prism 13 then coaxially reflects this part of the indicator beam back to the beam splitter 12. The indicator beam is reflected again by the beam splitter 12 and enters the reflecting mirror 31. After being reflected by the reflecting mirror 31, it enters the tube mirror 32. After being focused by the tube mirror 32, a light spot is formed. Then, after being split by the beam splitter prism 41, the light spot is projected onto the camera 42 and enters the eyepiece 33 respectively.

[0047] Furthermore, by driving the moving device to adjust the angle and position of the multi-band light source module, the laser beam can be focused on different positions of the cell or embryo. Since the multi-band light source module emits the light sequentially or simultaneously, the indicator beam moves to the corresponding position, and the corner bevel reflecting prism 13 can ensure that the light beam incident on the corner bevel reflecting prism 13 from any angle will be reflected in the opposite direction on the same axis.

Claims

1. An optical device for indicating the position of a laser beam, comprising an objective lens module, an eyepiece module, and an optical module disposed between the objective lens module and the eyepiece module, characterized in that, The optical module is used to emit and collimate the laser beam and the indicator beam. The optical module is also equipped with a reflection module to reflect the laser beam and the indicator beam so that the laser beam enters the objective lens module and the indicator beam enters the objective lens module and the eyepiece module. The eyepiece module includes a reflector, a tube mirror, and an eyepiece, with the reflective surface of the reflector facing the optical module and the tube mirror; it also includes an imaging module, which includes a camera and a beam splitter, the beam splitter being used to allow an indicator beam to enter the eyepiece and the camera.

2. The optical device for indicating the position of a laser beam according to claim 1, characterized in that, The optical module includes a multi-band light source module for emitting, collimating, and pointing laser beams.

3. The optical device for indicating the position of a laser beam according to claim 2, characterized in that, The reflection module includes a beam splitter and a reflecting prism. The beam splitter is located between the multi-band light source module and the reflecting prism. Both sides of the beam splitter can reflect the light beam, with one side facing the multi-band light source module and the objective lens module. The reflecting prism is used to reflect the incident light coaxially and in opposite directions.

4. The optical device for indicating the position of a laser beam according to claim 3, characterized in that, The reflecting prism is a pyramidal reflecting prism or a plane reflecting prism.

5. The optical device for indicating the position of a laser beam according to claim 3, characterized in that, The side of the beam splitter facing the multi-band light source module and objective lens module can also transmit the light beam. The side of the beam splitter facing the multi-band light source module and objective lens module has low transmittance and high reflectance for the laser beam, and its transmittance and reflectance for the indicator beam are similar.

6. The optical device for indicating the position of a laser beam according to claim 3, characterized in that, The objective module includes a microscope objective and a stage. The culture dish is placed on the stage, and the microscope objective is located between the stage and the beam splitter.

7. The optical device for indicating the position of a laser beam according to claim 2, characterized in that, It also includes a moving device for moving the position of the multi-band light source module.

8. The optical device for indicating the position of a laser beam according to claim 7, characterized in that, The multi-band light source module includes a multi-band light source and a collimating lens. The moving device includes a rotary motor and an arc-shaped guide rail. The rotary motor drives the multi-band light source module to move along the arc-shaped guide rail to adjust its angle.

9. The optical device for indicating the position of a laser beam according to claim 7, characterized in that, The multi-band light source module includes a multi-band light source, a collimating lens, and a deflecting lens. The collimating lens is located between the multi-band light source and the deflecting lens. The moving device includes a linear motor and a linear guide rail. The linear motor drives the multi-band light source and the collimating lens to move along the linear guide rail to adjust their positions.

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