Additional polaroid mechanism of slit-lamp microscope

Abstract

An additional polaroid mechanism of a slit lamp microscope comprises a polarization analyzing part and a polarizing part, the polarizing part is detachably installed on a reflecting mirror surface or a prism projected by a slit lamp light source, and the polarization analyzing part is detachably installed on a lens at the objective lens end of a slit lamp; the polarization analyzing part and the polarizing part are respectively composed of a polaroid and a fixing part, the polaroid and the fixing part are detachably connected, and the polarization direction of the polaroid of the polarization analyzing part and the polarization direction of the polaroid of the polarizing part are orthogonally intersected. Through the structure, the slit lamp microscope can eliminate redundant reflected light, so that lesions of parts such as eyelids and eye rims can be clearly observed, and the slit lamp microscope can be adapted to slit lamps of different manufacturers.

Description

Technical Field

[0001] The utility model relates to the field of microscope supporting equipment, in particular to an additional polarizing plate mechanism for a slit lamp microscope. Background Art

[0002] The slit lamp microscope is an essential piece of clinical ophthalmic examination equipment, consisting of a light source illumination system and a binocular microscope system. The light source illumination system uses a halogen or LED light source that is converged and reflected by a specific optical system and then projected onto the subject's eye. By adjusting the angle, width, and length of the light, different parts of the eye can be displayed in different lighting methods. However, the conventional light source equipped with a traditional slit lamp microscope projects reflected light onto the eye, which can interfere with imaging. This is especially true when observing eyelid lesions. Due to the unique skin texture, a large amount of reflected light is generated, which in turn interferes with observation of the eyelid skin and eyelid margin. Summary of the Invention

[0003] The purpose of the utility model is to provide a slit lamp microscope with an additional polarizing plate mechanism, which can be easily loaded onto a traditional slit lamp microscope to quickly transform it into a polarized light microscope, thereby eliminating excess reflections and clearly observing lesions in the eyelids and eyelid margins, and can also observe and study parts such as corneal collagen fibers through the refractive properties of the observed tissue.

[0004] In order to solve the above technical problems, the technical solution of the utility model is: a slit lamp microscope with an additional polarizing plate mechanism, comprising an analyzer and a polarizing plate, wherein the polarizing plate is detachably mounted on a reflecting mirror or prism projected by the slit lamp light source, and the analyzer is detachably mounted on the end lens of the slit lamp objective lens; the analyzer and the polarizing plate are both composed of a polarizing plate and a fixed component, and the polarizing plate and the fixed component are detachably connected, and the polarization directions of the polarizing plate of the analyzer and the polarizing plate of the polarizing plate are orthogonal.

[0005] The fixing component and the polarizer are positioned by a split magnetic attraction method or an adhesive method.

[0006] The fixing component and the microscope body are positioned by a split magnetic attraction method or an adhesive method.

[0007] The fixed component is a hinge structure, and the hinge is a damping hinge.

[0008] The fixing component and the polarizer are installed in a plug-in manner.

[0009] The fixing component is a frame structure, including a slide frame, the polarizer is inserted into the slide frame, and a folded angle fixing plate is provided on the upper part of the slide frame, which positions the fixing component and the slit lamp microscope.

[0010] The fixed component is provided with a lever structure, and a horizontal lever groove is provided on the upper part of the polarizer; the lever structure includes a handle part and a toggle part, the handle part and one end of the toggle part are fixedly connected, and the connection end is hinged to the slide groove frame at the same time, and the other end of the toggle part is arranged in the lever groove and is slidably connected to the lever groove.

[0011] The polarizer of the analyzer is circular or square.

[0012] The polarizing plate of the polarizing part is rectangular.

[0013] The beneficial effects of the utility model are:

[0014] The above-mentioned structure of the utility model facilitates the installation and positioning of the two polarizers. When the polarizers are removed, they are in the non-operating position without affecting the normal optical path, allowing for rapid switching between conventional slit lamp microscopy and polarized light microscopy. Furthermore, the new structure is highly adaptable and can meet the clinical modification needs of slit lamps from different manufacturers. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the working state structure of the polarization detector in Example 1;

[0016] Figure 2 This is a schematic diagram of the structure of the polarization detection unit in the non-working position state in Example 1;

[0017] Figure 3 This is a schematic diagram of the working state structure of the polarizing part in Example 1;

[0018] Figure 4 This is a schematic structural diagram of the polarizing portion in the non-working state in Example 1;

[0019] Figure 5 Schematic diagram of the installation of the polarizer and analyzer of the slit lamp microscope with the lower light source projected through a prism in Example 1;

[0020] Figure 6 This is a schematic diagram of the installation of the polarizer and analyzer of a slit lamp microscope with the upper light source projected through a reflective mirror in Example 1;

[0021] Figure 7 Schematic diagram of the structure of the polarization analyzer in Example 2;

[0022] Figure 8 Schematic diagram of the working state structure of the polarization analyzer in Example 2;

[0023] Figure 9 This is a schematic diagram of the structure of the polarization detection unit in the non-working position state in Example 2;

[0024] Figure 10 Schematic diagram of the polarizing portion structure in Example 2;

[0025] Figure 11 Schematic diagram of the polarizing unit in working state in Example 2;

[0026] Figure 12 This is a structural diagram of the polarizing part in the non-working state in Example 2.

[0027] Figure 13 Schematic diagram of the working state of the slit lamp microscope in Example 2. DETAILED DESCRIPTION

[0028] Example 1:

[0029] like Figure 1-6 As shown, a slit lamp microscope with an additional polarizer mechanism includes a polarizer 1 and a polarizer 2. The polarizer 2 is detachably mounted on a reflecting mirror or prism projected by the slit lamp light source, and the analyzer 1 is detachably mounted on the end lens of the slit lamp objective. The analyzer 1 and the polarizer 2 are both composed of a polarizer 3 and a fixing component 4, and the polarizer 3 and the fixing component 4 are detachably connected. The polarization directions of the polarizer 3 of the analyzer 1 and the polarizer 2 are orthogonal.

[0030] The polarizing plate 3 of the analyzing section 1 is circular or square, and the polarizing plate 3 of the polarizing section 2 is rectangular.

[0031] The fixing component 4 and the polarizer 3 are positioned by a split magnetic attraction method or an adhesive method. The fixing component 4 and the microscope body are positioned by a split magnetic attraction method or an adhesive method.

[0032] The fixing member 4 is a hinge structure, preferably a damping hinge. When the polarizer 3 is drooped and positioned at the microscope position, the analyzer 1 and the polarizer 2 are in the working position. When the polarizer 3 is flipped up and away from the microscope position, the analyzer 1 and the polarizer 2 are in the non-working position.

[0033] Example 2:

[0034] like Figure 7-13 As shown, a slit lamp microscope with an additional polarizer mechanism includes an analyzer 1 and a polarizer 2. The polarizer 2 is detachably mounted on a reflective mirror or prism projected by the slit lamp light source, and the analyzer 1 is detachably mounted on the end lens of the slit lamp objective. Both the analyzer 1 and the polarizer 2 are composed of a polarizer 3 and a fixing component 4, which are detachably connected to each other. The polarization directions of the polarizer 3 of the analyzer 1 and the polarizer 2 are orthogonal. The polarizer 3 of the analyzer 1 is circular or square, while the polarizer 3 of the polarizer 2 is rectangular.

[0035] The polarizing plate 3 of the analyzing section 1 is circular or square, and the polarizing plate 3 of the polarizing section 2 is rectangular.

[0036] The fixing component 4 and the polarizer 3 are positioned by a split magnetic attraction method or an adhesive method. The fixing component 4 and the microscope body are positioned by a split magnetic attraction method or an adhesive method.

[0037] Among them, the fixed component 4 of the polarization analyzer 1 is as follows Figure 7-9 As shown, the fixing component 4 and the polarizer 3 are installed in a plug-in manner. The fixing component 4 is a frame structure, including a slide frame 4-1, into which the polarizer 3 is inserted. The upper portion of the slide frame 4-1 is provided with an angled fixing plate 4-2, which is used to position the fixing component 4 and the slit lamp microscope.

[0038] A lever structure 4-3 is provided on the fixed component 4, and a horizontal lever groove 3-1 is provided on the upper part of the polarizer 3; the lever structure 4-3 includes a handle part 4-3-1 and a toggle part 4-3-2, and the handle part 4-3-1 and one end of the toggle part 4-3-2 are fixedly connected, and the connection end is hinged to the slide groove frame 4-1 at the same time, and the other end of the toggle part 4-3-2 is arranged in the lever groove 3-1 and is slidably connected to the lever groove 3-1.

[0039] When the polarizer 3 is located at the center of the slide frame 4-1, the polarizer 3 corresponds to the position of the microscope, and the analyzer 1 is in the working position; when the handle 4-3-1 is rotated upward or downward, the toggle part 4-3-2 is subjected to force, which drives the polarizer 3 to move upward or downward and leave the center of the slide frame 4-1. The polarizer 3 is offset from the position of the microscope, and the analyzer 1 is in the non-working position.

[0040] Among them, the fixing component 4 of the polarizing part is as follows Figure 10-12 As shown, the fixing component 4 and the polarizer 3 are installed in a plug-in manner. The fixing component 4 is a frame structure, including a slide frame 4-1 and a slide rod 4-4. The lower part of the polarizer 3 is inserted into the slide rod 4-4, and the slide rod 4-4 is installed in the slide frame 4-1. Pulling down the slide rod 4-4 drives the polarizer 3 up or down, thereby driving the polarizing part 2 to be in the working position or the non-working position.

Claims

1. A slit lamp microscope with an additional polarizer mechanism, characterized in that: The polarizing part (2) comprises a polarizing part (1) and a polarizing part (2), wherein the polarizing part (2) is detachably mounted on a reflecting mirror or a prism projected by a slit lamp light source, and the polarizing part (1) is detachably mounted on an end lens of a slit lamp objective lens; the polarizing part (1) and the polarizing part (2) are both composed of a polarizing plate (3) and a fixing part (4), and the polarizing plate (3) and the fixing part (4) are detachably connected, and the polarizing directions of the polarizing plate (3) of the polarizing part (1) and the polarizing plate (3) of the polarizing part (2) are orthogonal.

2. The slit lamp microscope additional polarizer mechanism according to claim 1, characterized in that: The fixing component (4) and the polarizer (3) are positioned by a split magnetic attraction method or an adhesive method.

3. The slit lamp microscope additional polarizer mechanism according to claim 1, characterized in that: The fixing component (4) and the microscope body are positioned by a split magnetic attraction method or an adhesive method.

4. The slit lamp microscope additional polarizer mechanism according to claim 1, characterized in that: The fixing component (4) is a hinge structure.

5. The slit lamp microscope additional polarizer mechanism according to claim 4, characterized in that: The hinge is a damping hinge.

6. The slit lamp microscope additional polarizer mechanism according to claim 1, characterized in that: The fixing component (4) and the polarizer (3) are installed in a plug-in manner.

7. The slit lamp microscope additional polarizer mechanism according to claim 6, characterized in that: The fixing component (4) is a frame structure, comprising a slide frame (4-1), the polarizer (3) being inserted into the slide frame, and a folded angle fixing plate (4-2) being provided on the upper portion of the slide frame (4-1), and the fixing component (4) and the slit lamp microscope are positioned by the folded angle fixing plate (4-2).

8. The slit lamp microscope additional polarizer mechanism according to claim 7, characterized in that: The fixing component (4) is provided with a lever structure (4-3), and a transverse lever groove (3-1) is provided on the upper part of the polarizing plate (3); the lever structure (4-3) comprises a handle portion (4-3-1) and a toggle portion (4-3-2); one end of the handle portion (4-3-1) and the toggle portion (4-3-2) are fixedly connected, and the connection end thereof is hinged to the slide groove frame (4-1); the other end of the toggle portion (4-3-2) is arranged in the lever groove (3-1) and is slidably connected to the lever groove (3-1).

9. The slit lamp microscope additional polarizer mechanism according to claim 1, characterized in that: The polarizing plate (3) of the polarization analyzing part (1) is circular or square.

10. The slit lamp microscope additional polarizer mechanism according to claim 1, characterized in that: The polarizing plate (3) of the polarizing portion (2) is rectangular.

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