Mechanical structure of a slit lamp microscope
By employing a DLP optomechanical module and a PLC control system in a slit-lamp microscope, intelligent control and automated operation of the light source were achieved, solving the inconvenience of manual color filter and slit aperture control, and realizing fully automatic digital control and convenient operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WENZHOU MEDICAL UNIV
- Filing Date
- 2025-04-07
- Publication Date
- 2026-06-12
Smart Images

Figure CN224344909U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of a mechanical structure for a slit-lamp microscope, specifically a mechanical structure for a slit-lamp microscope. Background Technology
[0002] Slit-lamp microscopes, also known as narrow-slit-lamp microscopes, are widely used in ophthalmology to observe the condition of the eye being examined. These conventional slit-lamp microscopes consist of an illumination unit that projects slit light into the eye being examined, and a microscope unit for observing the eye. The illumination unit and microscope unit each have an illumination support arm and a microscope support arm, respectively, which are connected via a common rotation axis in a manner that allows for independent horizontal rotation. Furthermore, the focal plane of the slit light emanating from the illumination unit onto the rotation axis coincides with the focal plane of the microscope, thereby enabling illumination and observation of the eye being examined at any angle.
[0003] However, the color filters and slit aperture of existing slit-lamp microscopes are generally controlled manually, which makes them rather cumbersome to use. Utility Model Content
[0004] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.
[0005] In view of the problems existing in the mechanical structure of the above and / or existing slit lamp microscopes, this utility model is proposed.
[0006] Therefore, the purpose of this invention is to provide a mechanical structure for a slit lamp microscope. When using this device, the light source control of the intelligent slit lamp microscope is realized through DLP optical engine. The moving parts and the light source parts of the slit lamp microscope are controlled separately. A PLC control system is used to realize the control of rotation angle and three-dimensional motion. The DLP optical engine module replaces the manual filter switching and slit aperture control, solving the problem that the light source cannot be digitally controlled. This design ensures that the slit lamp microscope will not become too large and heavy due to the use of too many motors, and also realizes fully automatic digital control.
[0007] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:
[0008] A mechanical structure for a slit-lamp microscope, comprising:
[0009] The system comprises: a frame; an X-axis adjustment assembly mounted on the frame; a Y-axis adjustment assembly mounted on the X-axis adjustment assembly; a rotating assembly mounted above the frame; a lifting assembly mounted on top of the Y-axis adjustment assembly and connected to the rotating assembly; a platform mounted on the top surface of the frame; a PLC control box mounted on the inner wall of the frame; a DLP optical engine module USB port mounted on the frame; a touch screen mounted on the frame; a button box mounted on the frame; an observation mirror mounted above the frame; a camera mounted on the observation mirror and connected to the rotating assembly; a reflector mounted on the rotating assembly; and a DLP optical engine module mounted on the rotating assembly. The X-axis adjustment assembly is electrically connected to the PLC control box; the Y-axis adjustment assembly is electrically connected to the PLC control box; the lifting assembly is electrically connected to the PLC control box; and the rotating assembly is electrically connected to the PLC control box.
[0010] The DLP optical engine module is electrically connected to a digital micromirror array and a control circuit, which is electrically connected to the PLC control box. Each pixel of the digital micromirror is an RGB three-color LED, which switches the light source color to form a microscope filter. The digital micromirror also includes a flip-up micromirror, and the slit formed by the flip-up micromirror is the slit of the microscope.
[0011] In a preferred embodiment of the mechanical structure of the slit-lamp microscope described in this utility model, the X-axis adjustment component is a first linear guide rail component mounted along the X-axis.
[0012] In a preferred embodiment of the mechanical structure of the slit lamp microscope described in this utility model, the Y-axis adjustment component is a second linear guide rail component arranged along the Y-axis, and the second linear guide rail component is mounted on the slider of the first linear guide rail component.
[0013] In a preferred embodiment of the mechanical structure of the slit lamp microscope described in this utility model, the lifting assembly is a cylinder lifting assembly, which is mounted on the slider of the second linear guide assembly.
[0014] In a preferred embodiment of the mechanical structure of the slit-lamp microscope described in this utility model, the rotating component is a combination of a rotating motor and a rotating mounting plate, and the rotating component is mounted on top of the cylinder lifting component.
[0015] As a preferred embodiment of the mechanical structure of the slit lamp microscope described in this utility model, casters are symmetrically arranged at the bottom of the frame; handrails are symmetrically arranged on the frame; and brackets are provided on the handrails.
[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: When using this device, the light source control of the intelligent slit lamp microscope is realized through DLP optomechanical control. The moving part and the light source part of the slit lamp microscope are controlled separately. A PLC control system is used to realize the control of rotation angle and three-dimensional motion. The DLP optomechanical module replaces the manual filter switching and slit aperture control, solving the problem that the light source cannot be digitally controlled. This design not only ensures that the slit lamp microscope will not become too large and heavy due to the use of too many motors, but also realizes fully automatic digital control. Attached Figure Description
[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:
[0018] Figure 1 This is a first-view overall structural schematic diagram of the mechanical structure of a slit-lamp microscope according to the present invention.
[0019] Figure 2 This is a schematic diagram of the overall structure of the mechanical structure of a slit-lamp microscope according to the present invention from a second perspective. Detailed Implementation
[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0021] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views showing the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, in actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.
[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.
[0023] This invention provides a mechanical structure for a slit-lamp microscope. When using this device, the light source control of the intelligent slit-lamp microscope is realized through DLP optomechanical control. The moving parts and light source parts of the slit-lamp microscope are controlled separately. A PLC control system is used to realize the control of rotation angle and three-dimensional motion. The DLP optomechanical module replaces manual color filtering and aperture control, solving the problem that the light source cannot be digitally controlled. This design ensures that the slit-lamp microscope will not become too large and heavy due to the use of too many motors, and also realizes fully automatic digital control.
[0024] Figures 1-2 The diagram shown is an overall structural schematic of one embodiment of the mechanical structure of a slit-lamp microscope according to this utility model. Please refer to [link / reference]. Figures 1-2 The mechanical structure of a slit-lamp microscope according to this embodiment includes the following main body:
[0025] 1. Frame 1; X-axis adjustment assembly mounted on frame 1; 2. Casters symmetrically mounted at the bottom of frame 1; 3. Y-axis adjustment assembly mounted on X-axis adjustment assembly 2; 4. Handrails symmetrically mounted on frame 1; 5. Rotating assembly mounted above frame 1; 6. Bracket mounted on handrail 5; 7. Lifting assembly mounted at the top of Y-axis adjustment assembly 4 and connected to rotating assembly 6; 8. Platform mounted on the top surface of frame 1; 9. PLC control box mounted on the inner wall of frame 1; 10. DLP optical engine module USB port mounted on frame 1; 11. ... The components include: a touch screen 12 on the frame 1, a button box 13 on the frame 1, an observation mirror 14 on the top of the frame 1, a camera 15 on the observation mirror 14 and connected to the rotating assembly 6, a reflector 16 mounted on the rotating assembly 6, and a DLP optical engine module 17 mounted on the rotating assembly 6; an X-axis adjustment assembly 2 electrically connected to the PLC control box 10; a Y-axis adjustment assembly 4 electrically connected to the PLC control box 10; a lifting assembly 8 electrically connected to the PLC control box 10; and a rotating assembly 6 electrically connected to the PLC control box 10.
[0026] The DLP optical engine module consists of a digital micromirror array and a control circuit electrically connected together. The control circuit is electrically connected to the PLC control box. Each pixel of the digital micromirror is an RGB three-color LED, which switches the light source color to form a microscope filter. The digital micromirror also includes a flip-up micromirror; the slit formed by the flipping of the micromirror serves as the microscope slit. This allows the light source support to incorporate the DLP optical engine module, which is connected via USB. The system controls the optical engine module to generate light sources of different colors, lengths, brightness, and widths. The light source support has a reflector, allowing the light source to be reflected from top to bottom before reaching the eye. A digital camera enables real-time photography of the patient's eye lesions. The observation system has a zoom wheel to control the magnification. The observation support has an eyepiece, allowing for local observation and diagnosis of the patient's eye lesions. The halogen lamp of the traditional slit-lamp microscope has been replaced with the DLP optical engine module 17, with the light source originating from the DLP optical engine module 17. The light is projected from top to bottom onto the total reflection mirror and finally reflected to the eye. The DLP optical engine module 17 consists of a digital micromirror array and control circuitry. Each pixel of the digital micromirror is an RGB tri-color LED. By controlling the current of each LED, the color of the light source is switched, replacing the function of the color filter in the traditional slit-lamp microscope. By controlling the flip angle of each micromirror in the digital micromirror, slits of different widths are formed, replacing the function of the slit in the traditional slit-lamp microscope.
[0027] Among them, the X-axis adjustment component 2 is a first linear guide rail component installed along the X-axis; the Y-axis adjustment component 4 is a second linear guide rail component set along the Y-axis, and the second linear guide rail component is installed on the slider of the first linear guide rail component; the lifting component 8 is a cylinder lifting component, and the cylinder lifting component is installed on the slider of the second linear guide rail component; the rotating component 6 is a combination structure of a rotary motor and a rotary mounting plate, and the rotating component 6 is installed on the top of the cylinder lifting component.
[0028] Combination Figures 1-2The mechanical structure of a slit-lamp microscope according to this embodiment is as follows: When using this device, the light source control of the intelligent slit-lamp microscope is realized through DLP optical engine. The moving parts and light source parts of the slit-lamp microscope are controlled separately. A PLC control system is used to realize the control of rotation angle and three-dimensional motion. The activation of the first linear guide rail assembly can drive the entire DLP optical engine module 17, reflector 16, camera 15, and observation mirror 14 to move along the X-axis. The activation of the second linear guide rail assembly can drive movement along the Y-axis. The activation of the cylinder lifting assembly can drive lifting. The activation of the rotary motor can drive the rotating mounting plate to rotate, thereby driving the other structures to rotate together. The use of DLP optical engine module 17 to replace manual color filtering and aperture control solves the problem that the light source cannot be digitally controlled. This design ensures that the slit-lamp microscope will not become too large and heavy due to the use of too many motors, and also realizes fully automatic digital control.
[0029] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.
Claims
1. A mechanical structure for a slit-lamp microscope, characterized in that, include: A frame (1), an X-axis adjustment assembly (2) mounted on the frame (1), a Y-axis adjustment assembly (4) mounted on the X-axis adjustment assembly (2), a rotating assembly (6) mounted above the frame (1), a lifting assembly (8) mounted on the top of the Y-axis adjustment assembly (4) and connected to the rotating assembly (6), a platform (9) mounted on the top surface of the frame (1), a PLC control box (10) mounted on the inner wall of the frame (1), a DLP optical engine module USB port (11) mounted on the frame (1), a touch screen (12) mounted on the frame (1), and a button box (1) mounted on the frame (1). 13) An observation mirror (14) is set above the frame (1), a camera (15) is set on the observation mirror (14) and connected to the rotating assembly (6), a reflector (16) is mounted on the rotating assembly (6) and a DLP optical engine module (17) is mounted on the rotating assembly (6), the X-axis adjustment assembly (2) is electrically connected to the PLC control box (10), the Y-axis adjustment assembly (4) is electrically connected to the PLC control box (10), the lifting assembly (8) is electrically connected to the PLC control box (10), and the rotating assembly (6) is electrically connected to the PLC control box (10); The DLP optical engine module (17) is electrically connected to a digital micromirror array and a control circuit, and the control circuit is electrically connected to the PLC control box (10). Each pixel of the digital micromirror is an RGB three-color LED, and the RGB three-color LED switches the light source color to form a microscope filter. The digital micromirror also includes a flip-up micromirror, and the slit formed by the flip-up micromirror is the slit of the microscope.
2. The mechanical structure of a slit-lamp microscope according to claim 1, characterized in that, The X-axis adjustment component (2) is a first linear guide component installed along the X-axis.
3. The mechanical structure of a slit-lamp microscope according to claim 2, characterized in that, The Y-axis adjustment component (4) is a second linear guide component set along the Y-axis, and the second linear guide component is mounted on the slider of the first linear guide component.
4. The mechanical structure of a slit-lamp microscope according to claim 3, characterized in that, The lifting assembly (8) is a cylinder lifting assembly, which is installed on the slider of the second linear guide assembly.
5. The mechanical structure of a slit-lamp microscope according to claim 4, characterized in that, The rotating component (6) is a combination structure of a rotating motor and a rotating mounting plate. The rotating component (6) is installed on the top of the cylinder lifting component, and the DLP optical engine module (17) is installed on the rotating mounting plate.
6. The mechanical structure of a slit-lamp microscope according to claim 1, characterized in that, Casters (3) are symmetrically arranged at the bottom of the frame (1); handrails (5) are symmetrically arranged on the frame (1); brackets (7) are arranged on the handrails (5).