A portable slit lamp

Abstract

The application relates to the technical field of slit lamps, in particular to a portable slit lamp; through the observation groove, the lamp groove, the convex lens, the light source module, the gear ring and the adjusting ring, medical staff can continuously rotate the adjusting ring, the driving rod continuously approaches the end of the two inclined grooves away from each other, until the two rectangular plates contact each other, so that the two rectangular plates no longer have a gap, so that the two rectangular plates close the lamp groove, thereby avoiding that external dust enters the lamp groove when not in use; after the slit lamp irradiates on the human eye, the mobile phone camera observes the slit light spot projected by the light source module through the convex lens in the observation groove, so that the content in the human eye or the animal eye is displayed on the mobile phone, thereby only a simple installation box is needed to realize the light detection of the human eye or the animal eye, and the overall slit lamp is small in size and convenient to carry.

Description

Technical Field

[0001] This invention relates to the field of slit lamp technology, specifically a portable slit lamp. Background Technology

[0002] The slit lamp, also known as a slit lamp microscope, is the most basic and essential optical examination equipment in ophthalmology. It consists of an illumination system and a binocular stereomicroscope. By adjusting the narrow slit beam of light to illuminate the eye, it can perform a three-dimensional, magnified, and non-invasive examination of the structures from the surface of the eye to the inside of the eye. It is an essential instrument in ophthalmology clinics.

[0003] Its working principle is as follows: The light source emits parallel light, which passes through the slit aperture to form a narrow beam of intense slit light. Slit light enters the eye at an oblique angle, and the light is reflected, refracted, and scattered in different refractive media, such as the tear film, cornea, anterior chamber, iris, and lens interface; The microscope focuses on the light path to form a thin optical section, which can clearly distinguish tissue layers and subtle lesions; Adjustable crack width, angle, light intensity, and switchable inspection modes enable a range of inspection methods, from overall scanning to detailed local observation.

[0004] However, existing slit lamps are large and heavy, and their mechanical structure is difficult to simplify. Slit lamps include binocular microscopes, adjustable slit light sources, three-dimensional mechanical adjustment arms, jaw rests and forehead rest fixing components. To ensure stability during operation, the base and bracket are made of heavy metal materials, and the whole machine weighs several kilograms to ten kilograms, making slit lamps inconvenient to carry.

[0005] In summary, to solve the technical problems raised in this paper, this invention proposes a portable slit lamp. Summary of the Invention

[0006] To address the aforementioned issues of existing slit lamps being bulky, heavy, and having a complex mechanical structure that is difficult to streamline, this invention proposes a portable slit lamp. This slit lamp includes a binocular microscope, an adjustable slit light source, a three-dimensional mechanical adjustment arm, and jaw and forehead support fixing components. To ensure stability during operation, the base and support are made of heavy metal, resulting in the entire unit weighing several to ten kilograms. This makes the slit lamp inconvenient to carry. The invention includes a mounting box with an observation slot and a lamp slot. The observation slot contains a convex lens, and the lamp slot contains a light source module. The lamp slot includes: The gear ring is rotatably connected to the inner wall of the lamp slot, and the light source module is installed in the middle of the gear ring; An adjusting ring is rotatably connected inside the mounting box. One end of the adjusting ring is equipped with a toothed disc, which meshes with the outer wall of the gear ring. One side of the adjusting ring is located on the outside of the mounting box. There are two drive rods, which are evenly distributed on the gear ring. When the gear ring rotates, it drives the drive rods to rotate. There are two slides, which are symmetrically opened on both sides of the light trough. The end of the slide near the light trough is connected to the light trough. A rectangular plate is slidably connected inside each slide. Each rectangular plate has an inclined groove. The inclined grooves on the two rectangular plates are parallel to each other. In the initial state, the two rectangular plates are close to each other and close the light trough. At the same time, the end of the drive rod away from the gear ring is slidably connected to the end of the two inclined grooves that are far away from each other. The magnetic mounting assembly is located on the side of the mounting box away from the light trough.

[0007] As a preferred embodiment of this application, the observation slot is provided with a plurality of adjustment slots evenly distributed inside, and a slider is slidably connected inside each adjustment slot. A convex lens in the observation slot is disposed between the plurality of sliders. A connecting ring is slidably connected inside the observation slot, and each slider is fixed on the connecting ring. A strip-shaped groove is provided on the outside of the mounting box. An adjustment rod is slidably connected inside the strip-shaped groove. The adjustment rod is connected to one of the sliders, so that when the adjustment rod slides inside the strip-shaped groove, the adjustment rod drives the convex lens to slide through the slider. In the initial state, the convex lens is located at the end of the observation slot away from the magnetic suction assembly.

[0008] As a preferred embodiment of this application, each slider has two fixing plates at the end away from the magnetic component, and there is a gap between the two fixing plates. Each of the two fixing plates has a rubber roller at one end corresponding to the other, and the edge of the convex lens is clamped between the two fixing plates on the multiple sliders; and the slider can extend from the end of the slide groove near the light groove.

[0009] As a preferred embodiment of this application, the mounting box has a placement groove located in the gap between the lamp slot and the observation slot. The end of the placement groove near the lamp slot is connected to a sliding groove. A U-shaped plate is slidably connected inside the placement groove. The inner wall of the U-shaped plate is covered with a cleaning layer. The opening of the U-shaped plate faces the observation slot, and the gap between the U-shaped plates is distributed vertically. A column groove is provided at the end of the U-shaped plate near the lamp slot. A locking pin is slidably connected inside the column groove. A locking slot is provided on the rectangular plate near the observation slot. When the two rectangular plates close the lamp slot, the locking pin corresponds to the locking slot.

[0010] As a preferred embodiment of this application, the material on both sides of the gap of the U-shaped plate is an elastic material, and the cleaning layer on the inner side of the U-shaped plate is a microfiber cloth.

[0011] As a preferred embodiment of this application, an elastic plate is fixed in the gap inside the U-shaped plate. The elastic plate is fixed at the end of the U-shaped plate away from the observation groove. The side wall of the elastic plate is in contact with the inner wall of the U-shaped plate. When the U-shaped plate is completely inside the placement groove, the upper end of the elastic plate is limited by the upper wall of the placement groove, so that the elastic plate retracts inside the placement groove. When the U-shaped plate extends out of the placement groove, the upper wall of the placement groove no longer limits the elastic plate, and the elastic plate bends upward.

[0012] As a preferred embodiment of this application, in the initial state, the end of the elastic plate near the observation slot extends out of the placement slot, and the width of the end of the elastic plate extending out of the placement slot is greater than the portion located inside the placement slot, and an arc-shaped opening is provided at the end of the elastic plate extending out of the placement slot.

[0013] As a preferred embodiment of this application, two mounting slots are provided at the ends of the two rectangular plates that are close to each other, and the two mounting slots on each rectangular plate are distributed vertically. A sliding plate is slidably connected inside the mounting slot, and the end of the sliding plate away from the inside of the mounting slot is arc-shaped.

[0014] The beneficial effects of this invention are as follows: The two rectangular plates are brought closer together, reducing the gap between them and thus the width of the slit lamp. When the slit lamp is not in use, medical personnel can continuously rotate the adjusting ring, causing the drive rod to move towards the ends of the two inclined slots that are far apart, until the two rectangular plates come into contact with each other, eliminating the gap between them and sealing the lamp slot. This prevents external dust from entering the lamp slot when not in use. When the slit lamp shines on a person's eye, the mobile phone camera observes the slit light spot projected by the light source module through the convex lens in the observation slot, displaying the contents of the human or animal's eye on the mobile phone. Thus, only a simple installation box is needed to perform light detection on human or animal eyes, and the overall slit lamp is small in size and easy to carry. Attached Figure Description

[0015] Figure 1 This is a perspective view of the slit lamp in this invention; Figure 2 This is a perspective view of the slit lamp in this invention from another angle; Figure 3 This is an internal structural view of the lamp trough in this invention; Figure 4 This is a partial cross-sectional view of the mounting box in this invention; Figure 5 yes Figure 4 A magnified view of a portion of point A in the middle; Figure 6 This is a structural view of the light source module in this invention; Figure 7 This is a structural view of the gear ring in this invention; Figure 8 This is a cross-sectional view of the lamp trough in this invention; Figure 9 This is a structural view of the gear ring and rectangular plate in this invention; Figure 10 This is a cross-sectional view of the rectangular plate in this invention; Figure 11 This is a structural view of the U-shaped plate in this invention; Figure 12 This is a structural view of the slider in this invention; Figure 13 This is a structural view of the fixing plate in this invention; In the diagram: mounting box 1, observation slot 11, lamp slot 12, convex lens 13, light source module 14, gear ring 121, adjusting ring 15, gear plate 151, drive rod 122, slide groove 16, rectangular plate 161, inclined groove 162, magnetic suction assembly 2, adjusting groove 111, slider 112, connecting ring 113, strip groove 17, adjusting rod 171, fixing plate 114, placement groove 18, U-shaped plate 181, locking pin 182, locking groove 163, elastic plate 183, arc-shaped opening 184, mounting groove 164, sliding plate 165. Detailed Implementation

[0016] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0017] Example 1: like Figures 1 to 13 As shown; a portable slit lamp; the slit lamp includes a mounting box 1, the mounting box 1 is provided with an observation slot 11 and a lamp slot 12, a convex lens 13 is provided inside the observation slot 11, and a light source module 14 is provided inside the lamp slot 12; the interior of the lamp slot 12 includes: The gear ring 121 is rotatably connected to the inner wall of the lamp slot 12, and the light source module 14 is installed in the middle of the gear ring 121. Adjusting ring 15 is rotatably connected inside mounting box 1. One end of adjusting ring 15 is provided with a gear 151, and the gear 151 meshes with the outer wall of gear ring 121. One side of adjusting ring 15 is located on the outside of mounting box 1. There are two drive rods 122, which are evenly distributed on the gear ring 121. When the gear ring 121 rotates, it drives the drive rods 122 to rotate. There are two slides 16, which are symmetrically opened on both sides of the light groove 12. The end of the slide 16 near the light groove 12 is connected to the light groove 12. A rectangular plate 161 is slidably connected inside each slide 16. Each rectangular plate 161 is provided with an inclined groove 162. The inclined grooves 162 on the two rectangular plates 161 are parallel to each other. In the initial state, the two rectangular plates 161 are close to each other and close the light groove 12. At the same time, the end of the drive rod 122 away from the gear ring 121 is slidably connected to the end of the two inclined grooves 162 away from each other. The magnetic component 2 is located on the side of the mounting box 1 away from the light trough 12; The observation slot 11 has multiple adjustment slots 111 evenly distributed inside, and each adjustment slot 111 has a slider 112 slidably connected inside. The convex lens 13 in the observation slot 11 is disposed between the multiple sliders 112. The observation slot 11 has a connecting ring 113 slidably connected inside, and each slider 112 is fixed on the connecting ring 113. The mounting box 1 has a strip-shaped slot 17 on the outside. An adjustment rod 171 is slidably connected inside the strip-shaped slot 17. The adjustment rod 171 is connected to one of the sliders 112, so that when the adjustment rod 171 slides inside the strip-shaped slot 17, the adjustment rod 171 drives the convex lens 13 to slide through the slider 112. In the initial state, the convex lens 13 is located at the end of the observation slot 11 away from the magnetic suction component 2. The specific workflow is as follows; When medical staff use the slit lamp, they first turn on the switch on the mounting box 1. Then, they attach a magnetic piece to the back of their mobile phone, adhering it to the magnetic assembly 2, and align the phone's camera with the observation slot 11. The convex lens 13 inside the observation slot 11 magnifies the phone's camera. Next, the medical staff turns on the light source module 14 on the mounting box 1. Once activated, the light source module 14 inside the lamp slot 12 emits detection light. The medical staff then directs the emitted beam at the eyes of a human or animal to observe them. During this process, if multiple detection methods are required, the lighting needs to be adjusted. To adjust the slit width, medical staff can rotate the adjusting ring 15 above the mounting box 1. When the adjusting ring 15 rotates, the gear plate 151 on the adjusting ring 15 meshes with the gear block on the gear ring 121 inside the lamp slot 12, causing the gear ring 121 to rotate. During the rotation of the gear ring 121, the gear ring 121 drives the drive rod 122 to rotate. Since the lamp slot 12 has sliding grooves 16 on both sides, and the rectangular plate 161 is interactively connected inside the sliding groove 16, and the rectangular plate 161 has an inclined groove 162, the end of the drive rod 122 away from the gear ring 121 is slidably connected in the inclined groove 162. In the initial state, the drive rod 122 is located at the end of the inclined groove 162 that is far away from each other. When it is necessary to adjust the slit width of the slit lamp, the adjusting ring 15... 5 drives the gear ring 121, causing the drive rod 122 to slide towards the end of the two inclined slots 162 that are close to each other. During this process, because the rectangular plate 161 is slidably connected inside the slide groove 16, the rectangular plate 161 can only slide back and forth inside the slide groove 16 and cannot rotate. Therefore, when the drive rod 122 moves towards the end of the two inclined slots 162 that are close to each other, the drive rod 122 will drive the two rectangular plates 161 to move away from each other, thereby increasing the gap between the two rectangular plates 161. When the detection light emitted by the light source module 14 passes through the gap between the two rectangular plates 161, the slit light projected by the light source module 14 onto the human or animal eye becomes larger, thereby increasing the slit width of the light. If it is necessary to increase the slit width of the light... When the slit lamp is turned down, medical staff rotate the adjusting ring 15 in the opposite direction, causing the gear ring 121 to rotate in the opposite direction. This causes the drive rod 122 to move towards the opposite end of the inclined groove 162, thereby bringing the two rectangular plates 161 closer together and reducing the gap between them. This, in turn, reduces the width of the slit lamp. If the slit lamp is not in use, medical staff can continue to rotate the adjusting ring 15, causing the drive rod 122 to move towards the opposite end of the inclined groove 162 until the two rectangular plates 161 come into contact with each other. This eliminates the gap between the two rectangular plates 161, sealing the lamp slot 12 and preventing external dust from entering the lamp slot 12 when it is not in use.When the slit lamp shines on a human eye, the mobile phone camera observes the slit light spot projected by the light source module 14 through the convex lens 13 in the observation slot 11, so that the contents of the human or animal eye are displayed on the mobile phone. Thus, only a simple installation box 1 is needed to realize the light detection of the human or animal eye. Moreover, the overall slit lamp is small in size and easy to carry. Furthermore, if it is necessary to adjust the display size on the mobile phone, since the convex lens 13 is initially located at the end of the observation slot 11 away from the magnetic component 2, and when illuminating the human eye, the distance between the convex lens 13 and the human eye is less than the focal length of the convex lens 13; this allows medical personnel to manually adjust the magnification of the mobile phone when it is necessary to magnify a part of the human or animal eye, or they can manually move the adjustment rod 171 on the mounting box 1, causing the adjustment rod 171 to move closer to the end of the magnetic component 2. During this process, the adjustment rod 171 slides inside the strip groove 17, and since the adjustment rod 171 is connected to the slider 112 inside the adjustment slot 111, the movement of the adjustment rod 171 drives the slider 112 to move. The multiple sliders 112 are fixed together by connecting rings 113, and the convex lens 13 is installed between the multiple sliders 112. When the adjusting rod 171 moves towards the magnetic suction assembly 2, the adjusting rod 171 drives the convex lens 13 towards the mobile phone camera through the sliders 112. Thus, provided that the focal length of the convex lens 13 is greater than the distance between the convex lens 13 and the human or animal eye, the closer the convex lens 13 is to the mobile phone camera, the better the magnification effect of the human or animal eye. Similarly, if it is necessary to reduce the magnification, the adjusting rod 171 is adjusted to the end away from the magnetic suction assembly 2, so that the convex lens 13 is adjusted to the end away from the magnetic suction assembly 2. This makes it easier to observe the human and animal eyes and improves the usage effect.

[0018] Example 2: like Figures 2 to 13 As shown; each slider 112 has two fixing plates 114 at the end away from the magnetic component 2, and there is a gap between the two fixing plates 114. Each of the two fixing plates 114 has a rubber roller at the corresponding end, and the edge of the convex lens 13 is clamped between the two fixing plates 114 on the multiple sliders 112; and the slider 112 can extend from the end of the slide groove 16 near the lamp groove 12. The mounting box 1 has a placement groove 18 located in the gap between the lamp groove 12 and the observation groove 11. The end of the placement groove 18 near the lamp groove 12 is connected to the slide groove 16. The interior of the placement groove 18 is slidably connected to a U-shaped plate 181. The inner wall of the U-shaped plate 181 is covered with a cleaning layer. The opening of the U-shaped plate 181 faces the observation groove 11, and the gap between the U-shaped plates 181 is distributed vertically. The end of the U-shaped plate 181 near the lamp groove 12 is provided with a column groove. The interior of the column groove is slidably connected to a locking pin 182. The rectangular plate 161 near the observation groove 11 is provided with a locking groove 163. When the two rectangular plates 161 are closed to the lamp groove 12, the locking pin 182 corresponds to the locking groove 163. The material on both sides of the gap of the U-shaped plate 181 is elastic material, and the cleaning layer on the inside of the U-shaped plate 181 is microfiber cloth. The specific workflow is as follows; Based on the above embodiment 1, each slider 112 is provided with two fixing plates 114 at the end away from the magnetic suction component 2, and there is a gap between the two fixing plates 114. Rubber rollers are provided on the corresponding sides of the two fixing plates 114, and the edge of the convex lens 13 is clamped between the two fixing plates 114 on the multiple sliders 112. The slider 112 can extend from the end of the adjustment groove 111 away from the magnetic suction component 2. After the slit lamp is used multiple times, in order to avoid dust and impurities adhering to the convex lens 13, the medical staff can slide the adjustment rod 171 to the end away from the magnetic suction component 2 until the slider 112 slides out from the end of the adjustment groove 111 away from the magnetic suction component 2. At this time, the slider 112 will extend the convex lens 13 from the observation groove 11. At this time, the medical staff can use a cleaning cloth to clean the convex lens 13. During the process, the medical staff can rotate the convex lens 13, so that the convex lens 13 rotates between the two fixing plates 114. During the process, the rubber rollers between the fixing plates 114 roll the edge of the convex lens 13. And when the convex lens 13 extends out of the observation slot 11, the medical staff can rotate the adjusting ring 15, so that the gear disk 151 on the adjusting ring 15 meshes with the toothed block on the outer side of the gear ring 121, causing the gear ring 121 to rotate. During the rotation of the gear ring 121, the drive rod 122 on the gear ring 121 rotates, causing the drive rod 122 to slide towards the end of the two inclined slots 162 that are close to each other. During this process, guided by the inclined slots 162, the rectangular plate 161 is guided by the drive rod 122, and the two rectangular plates 161 move away from each other. Prior to this, medical staff pushed the locking pin 182, and a slot 163 was opened on the rectangular plate 161 near the observation slot 11. The placement slot 18 was partially connected to the sliding groove 16, so that after the locking pin 182 was pressed, the locking pin 182 entered the slot 163. Then, when the two rectangular plates 161 moved away from each other, the rectangular plate 161 near the observation slot 11 pushed the U-shaped plate 181 towards the observation slot 11. Since the convex lens 13 protruded from the observation slot 11, when the U-shaped plate 181 extended from the placement slot 18... After the letter is inserted, the opening of the U-shaped plate 181 is inserted into both sides of the convex lens 13, so that both sides of the convex lens 13 are embedded in the U-shaped plate 181. The inner wall of the U-shaped plate 181 is lined with microfiber cloth, which contacts both sides of the convex lens 13. This continues until the convex lens 13 is completely inserted into the U-shaped plate 181, with the middle of the U-shaped plate 181 located in the middle of the convex lens 13. Then, medical personnel control the rotation of the convex lens 13. During this rotation, the outer side of the convex lens 13 rotates within the U-shaped plate 181, causing the U-shaped plate 181 to... The microfiber cloth in the middle wipes the surface of the convex lens 13, which facilitates the cleaning of the surface of the convex lens 13 and avoids residual dust on the surface of the convex lens 13, which would affect the observation accuracy of the slit lamp through the convex lens 13. In addition, the two sides of the U-shaped plate 181 are made of elastic material, so that after the convex lens 13 is embedded between the U-shaped plates 181, the U-shaped plates 181 are made of elastic material, which makes it easy for the U-shaped plates 181 to wrap the convex lens 13, improve the contact tightness between the U-shaped plates 181 and the convex lens 13 after contact, and thus improve the cleaning efficiency of the convex lens 13. Example 3: like Figures 3 to 13 As shown; an elastic plate 183 is fixed in the gap inside the U-shaped plate 181. The elastic plate 183 is fixed at the end of the U-shaped plate 181 away from the observation groove 11. The side wall of the elastic plate 183 is in contact with the inner wall of the U-shaped plate 181. When the U-shaped plate 181 is completely inside the placement groove 18, the upper end of the elastic plate 183 is limited by the upper wall of the placement groove 18, so that the elastic plate 183 retracts inside the placement groove 18. When the U-shaped plate 181 extends out of the placement groove 18, the upper wall of the placement groove 18 no longer limits the elastic plate 183, and the elastic plate 183 bends upward. The end of the elastic plate 183 near the observation slot 11 extends out of the placement slot 18, and the width of the end of the elastic plate 183 extending out of the placement slot 18 is greater than the part located inside the placement slot 18, and an arc-shaped opening 184 is provided at the end of the elastic plate 183 extending out of the placement slot 18. The specific workflow is as follows; Based on the above embodiment, by providing an elastic plate 183 in the U-shaped plate 181, one end of the elastic plate 183 is fixed inside the end of the U-shaped plate 181 away from the observation groove 11. Initially, the elastic plate 183 is bent upwards. When the U-shaped plate 181 is retracted into the placement groove 18, the upper wall of the elastic plate 183 is limited by the upper wall of the placement groove 18, preventing it from bending upwards. Furthermore, when the U-shaped plate 181 extends out of the placement groove 18, the upper inner wall of the placement groove 18 gradually stops limiting the elastic plate 183, allowing it to extend out. After extending, the elastic plate 183 bends upwards, and when the convex lens 13 rotates... During the process, the elastic plate 183 will not affect the convex lens 13. After the convex lens 13 is cleaned, the medical staff rotates the adjusting ring 15, causing the drive rod 122 to move to two ends that are far apart from each other, so that the two rectangular plates 161 move closer to each other. During the process, the rectangular plate 161 at the end closer to the observation slot 11 will insert the U-shaped plate 181 into the placement slot 18. During the process, the upper inner wall of the placement slot 18 gradually limits the elastic plate 183, so that the elastic plate 183 bends downward and enters between the U-shaped plates 181. During the process, the elastic plate 183 contacts the inner wall of the U-shaped plate 181, so that the elastic plate 183 cleans the microfiber cloth on the inner wall of the U-shaped plate 181, thereby facilitating the U-shaped plate 181 to clean the convex lens 13 next time. Furthermore, the end of the elastic plate 183 near the observation groove 11 extends out of the placement groove 18, and the width of the end of the elastic plate 183 near the observation groove 11 is the same as the width of the U-shaped plate 181. An arc-shaped opening 184 is formed at the end of the elastic plate 183 near the observation groove 11, and the size of the arc-shaped opening 184 is the same as the size of the convex lens 13. Based on the above, when the elastic plate 183 extends out of the placement groove 18, the elastic plate 183 gradually bends upward, and simultaneously moves closer to the convex lens 13. During this process, the convex lens 13 is embedded in the arc-shaped opening 184 on the elastic plate 183, allowing for cleaning of the convex lens 13. During the process, when the convex lens 13 rotates, it first rotates through the arc-shaped opening 184 on the elastic plate 183. After passing through the arc-shaped opening 184, the convex lens 13 then enters the space between the U-shaped plates 181. After passing through the space between the U-shaped plates 181, the microfiber cloth between the U-shaped plates 181 cleans the convex lens 13. During this process, when the convex lens 13 passes through the arc-shaped opening 184 first, the edge of the convex lens 13 passes through the arc-shaped opening 184, thus avoiding the presence of large impurities at the edge of the convex lens 13 when it rubs against the rubber roller, thereby avoiding affecting the light transmission effect of the edge of the convex lens 13.

[0019] Example 4: like Figures 1 to 13 As shown; two mounting slots 164 are provided at the ends of the two rectangular plates 161 that are close to each other, and the two mounting slots 164 on each rectangular plate 161 are distributed vertically. A sliding plate 165 is slidably connected inside the mounting slot 164. The end of the sliding plate 165 away from the inside of the mounting slot 164 is arc-shaped. A limiting member is provided between the sliding plate 165 and the mounting slot 164.

[0020] The specific workflow is as follows; Furthermore, two mounting slots 164 are provided at the ends of two rectangular plates 161 that are close to each other. The mounting slots 164 on each rectangular plate 161 are vertically distributed. A sliding plate 165 is slidably connected inside the rectangular plate 161, and the end of the sliding plate 165 away from the mounting slot 164 is arc-shaped. A limiting element, a knob (as in the prior art), is provided between the sliding plate 165 and the mounting slot 164. The lower end of the knob is located inside the mounting slot 164. When it is necessary for the upper and lower ends of the slit lamp's projected light beam to be rectangular, the medical staff rotates the knob, causing the lower end of the knob to enter the mounting slot 164. This causes the lower end of the knob to press and limit the sliding plate 165, resulting in a rectangular light spot emitted between the two rectangular plates 161. When the upper and lower ends of the projected light spot are rectangular, the slit lamp forms a straight cross-section of the eye tissue layers, clearly distinguishing the fine structures such as the corneal epithelium, stroma, endothelium, and lens cortex. Edge distortion; suitable for precise diagnosis of the eyes; when using a slit lamp for qualitative screening and auxiliary scenarios that emphasize low stimulation, wide range, and comfort, medical staff rotate the knob so that the knob no longer presses against the sliding plate 165 inside the mounting slot 164. When the two rectangular plates 161 move away from each other, the sliding plate 165 slides out from inside the mounting slot 164. Its power source is a spring in the prior art. Specifically, the spring is set between the mounting slot 164 and the sliding plate 165. Since the end of the sliding plate 165 away from the inside of the mounting slot 164 is arc-shaped, when the detection light projected by the light source module 14 passes through the gap between the two rectangular plates 161, the sliding plates 165 at the upper and lower ends of the rectangular plates 161 block the light source, so that the upper and lower ends of the projected slit lamp are arc-shaped light spots. The arc-shaped light spots do not have right-angled dark areas of rectangular light bands, and the coverage area is continuous, which is suitable for rapid overall scanning; thereby improving the use effect of the slit lamp.

[0021] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A portable slit lamp; the slit lamp includes a mounting box (1), the mounting box (1) being provided with an observation slot (11) and a lamp slot (12), a convex lens (13) being disposed inside the observation slot (11), and a light source module (14) being disposed inside the lamp slot (12); characterized in that, The interior of the light trough (12) includes: A gear ring (121) is rotatably connected to the inner wall of the lamp slot (12), and a light source module (14) is installed in the middle of the gear ring (121); An adjusting ring (15) is rotatably connected inside the mounting box (1). One end of the adjusting ring (15) is provided with a gear disc (151), and the gear disc (151) meshes with the outer wall of the gear ring (121). One side of the adjusting ring (15) is located on the outside of the mounting box (1). There are two drive rods (122), which are evenly distributed on the gear ring (121). When the gear ring (121) rotates, it drives the drive rods (122) to rotate. There are two slides (16), which are symmetrically opened on both sides of the lamp slot (12). The end of the slide (16) close to the lamp slot (12) is connected to the lamp slot (12). A rectangular plate (161) is slidably connected inside each slide (16). An inclined groove (162) is opened on each rectangular plate (161). The inclined grooves (162) on the two rectangular plates (161) are parallel to each other. In the initial state, the two rectangular plates (161) are close to each other and close the lamp slot (12). At the same time, the end of the drive rod (122) away from the gear ring (121) is slidably connected to the end of the two inclined grooves (162) away from each other. The magnetic assembly (2) is located on the side of the mounting box (1) away from the light trough (12).

2. A portable slit lamp as claimed in claim 1, characterized in that: The observation slot (11) has multiple adjustment slots (111) evenly distributed inside, and each adjustment slot (111) has a slider (112) slidably connected inside. The convex lens (13) in the observation slot (11) is arranged between the multiple sliders (112). The observation slot (11) has a connecting ring (113) slidably connected inside, and each slider (112) is fixed on the connecting ring (113). The mounting box (1) has a strip groove (17) on its outside. An adjustment rod (171) is slidably connected inside the strip groove (17). The adjustment rod (171) is connected to one of the sliders (112), so that when the adjustment rod (171) slides inside the strip groove (17), the adjustment rod (171) drives the convex lens (13) to slide through the slider (112). In the initial state, the convex lens (13) is located at the end of the observation slot (11) away from the magnetic suction assembly (2).

3. A portable slit lamp as claimed in claim 1, characterized in that: Each slider (112) has two fixing plates (114) at the end away from the magnetic assembly (2), and there is a gap between the two fixing plates (114). Each of the two fixing plates (114) has a rubber roller at the corresponding end, and the edge of the convex lens (13) is clamped between the two fixing plates (114) on the multiple sliders (112); and the slider (112) can extend from the end of the slide groove (16) near the lamp groove (12).

4. A portable slit lamp as claimed in claim 3, characterized in that: The mounting box (1) has a placement slot (18) located in the gap between the lamp slot (12) and the observation slot (11). The end of the placement slot (18) near the lamp slot (12) is connected to the slide groove (16). The interior of the placement slot (18) is slidably connected to a U-shaped plate (181). The inner wall of the U-shaped plate (181) is covered with a cleaning layer. The opening of the U-shaped plate (181) faces the observation slot (11), and the gap between the U-shaped plates (181) is distributed vertically. The end of the U-shaped plate (181) near the lamp slot (12) is provided with a column groove. The inside of the column groove is slidably connected to a locking pin (182). The rectangular plate (161) near the observation slot (11) has a locking groove (163). When the two rectangular plates (161) close the lamp slot (12), the locking pin (182) corresponds to the locking groove (163).

5. A portable slit lamp as claimed in claim 4, characterized in that: The material on both sides of the gap of the U-shaped plate (181) is elastic material, and the cleaning layer on the inside of the U-shaped plate (181) is microfiber cloth.

6. A portable slit lamp as claimed in claim 5, characterized in that: An elastic plate (183) is fixed in the gap inside the U-shaped plate (181). The elastic plate (183) is fixed at the end of the U-shaped plate (181) away from the observation groove (11). The side wall of the elastic plate (183) is in contact with the inner wall of the U-shaped plate (181). When the U-shaped plate (181) is completely inside the placement groove (18), the upper end of the elastic plate (183) is limited by the upper wall of the placement groove (18), so that the elastic plate (183) retracts inside the placement groove (18). When the U-shaped plate (181) extends out of the placement groove (18), the upper wall of the placement groove (18) no longer limits the elastic plate (183), and the elastic plate (183) bends upward.

7. A portable slit lamp as claimed in claim 6, characterized in that: In the initial state, the end of the elastic plate (183) near the observation slot (11) extends out of the placement slot (18), and the width of the end of the elastic plate (183) extending out of the placement slot (18) is greater than the part located inside the placement slot (18), and an arc-shaped opening (184) is provided at the end of the elastic plate (183) extending out of the placement slot (18).

8. A portable slit lamp as claimed in claim 1, characterized in that: Two mounting slots (164) are provided at the ends of the two rectangular plates (161) that are close to each other. The two mounting slots (164) on each rectangular plate (161) are distributed vertically. A sliding plate (165) is slidably connected inside the mounting slot (164). The end of the sliding plate (165) away from the inside of the mounting slot (164) is arc-shaped.

Images