Fundus lighting device

Abstract

The utility model discloses a fundus lighting device which comprises a light source cylinder, an assembling sleeve and a lens assembly, before the fundus lighting device is adopted to conduct lighting examination on the fundus of a patient, a dimming lens can be rotated to cover a transmitting end, and then a power source of the light source cylinder is turned on; the light intensity of light emitted by the light source cylinder is weakened after the light passes through the dimming lens, strong discomfort cannot be generated after the light irradiates human eyes, an inspector can perform preliminary inspection under weak light, and after a detected person adapts to illumination, the inspector rotates the dimming lens to cover the transmitting end, so that fine inspection is performed on the fundus of the detected person, and the detection efficiency is improved. And the inspection efficiency and the inspection accuracy are not influenced.

Description

TECHNICAL FIELD

[0001] The utility model relates to ophthalmic examination technical field, especially in kind of fundus illumination device. BACKGROUND

[0002] When carrying out fundus pathological change examination, fundus illumination device is essential, and the fundus illumination device mainly provides necessary light source for examination, can illuminate retina, vitreous body, choroid and optic nerve and other structures of eyeball back part, and can assist doctors to clearly observe the detailed condition of fundus.

[0003] Some existing fundus illumination devices adopt fixed power light source, and the light emitted generally has high intensity to ensure that the observer can observe clearly, however, the high intensity light irradiation instantaneously irradiates the eye and produces strong discomfort, which makes some detected personnel difficult to cooperate with the observer to carry out examination work. UTILITY MODEL CONTENT

[0004] The main purpose of the utility model is to provide a kind of fundus illumination device, to improve user experience.

[0005] To achieve the above purpose, the utility model provides a kind of fundus illumination device, comprising:

[0006] Light source barrel has emitting end, and the emitting end is used to emit illumination light;

[0007] Assembly sleeve is connected to the outer peripheral wall of the light source barrel and is arranged close to the emitting end, and the axis of the assembly sleeve is arranged in parallel with the axis of the light source barrel;

[0008] Lens assembly, the lens assembly includes support, light-increasing lens and light-reducing lens, the support is rotatably connected to the assembly sleeve, the light-increasing lens and the light-reducing lens are connected to the support, and the light-increasing lens and the light-reducing lens can rotate with the support to switchably cover the emitting end.

[0009] In some embodiments of the utility model, the support includes rotating shaft and damping shaft sleeve, the damping shaft sleeve is sleeved between the rotating shaft and the assembly sleeve, so that the rotating shaft is dampingly rotatably connected to the assembly sleeve, and the light-increasing lens and the light-reducing lens are connected to one end of the rotating shaft exposed outside the assembly sleeve.

[0010] In some embodiments of the utility model, the lens assembly further includes focusing lens, the focusing lens is connected to the rotating shaft and is arranged along the circumference of the rotating shaft and spaced apart from the light-increasing lens and the light-reducing lens to switchably cover the emitting end.

[0011] In some embodiments of the utility model, the lens assembly further includes a diverging lens, the diverging lens is connected to the rotating shaft and is arranged along the circumference of the rotating shaft with the focusing lens, the light increasing lens and the light reducing lens to switchably cover the emitting end.

[0012] In some embodiments of the utility model, the damping shaft sleeve is made of nylon.

[0013] In some embodiments of the utility model, the assembling sleeve is integrally formed with the outer wall of the light source barrel.

[0014] In some embodiments of the utility model, the light source barrel includes a main barrel and a head barrel, the head barrel is coaxially and detachably connected to one end of the main barrel, the end of the assembling sleeve away from the main barrel forms the emitting end, and the assembling sleeve is integrally formed with the head barrel.

[0015] In some embodiments of the utility model, the head barrel is a tapered barrel, and the outer diameter of the head barrel is reduced in the direction away from the main barrel along the axial direction.

[0016] In some embodiments of the utility model, the light source barrel further includes a light shielding ring, the light shielding ring is installed on the end face of the head barrel away from the main barrel, and the light shielding ring is attached to the periphery of one lens in the lens assembly.

[0017] In some embodiments of the utility model, the light shielding ring is an elastic member, an inclined surface is formed on the inner ring surface of the light shielding ring, the inclined surface is inclined away from the center in the direction away from the head barrel, and one end of each lens of the lens assembly forms a chamfered surface.

[0018] Before the fundus illumination device in the utility model is used to illuminate and examine the fundus of a patient, the light reducing lens can be rotated to cover the emitting end first, and then the power supply of the light source barrel is turned on, so that the light emitted by the light source barrel is weakened after passing through the light reducing lens, and the light does not cause strong discomfort when irradiating the human eye, and the examiner can perform preliminary examination under weak light, and after the examinee adapts to the light, the examiner rotates the light increasing lens to cover the emitting end, so that the examinee's fundus is finely examined, and the examination efficiency and accuracy are not affected. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description can be obtained by the structure shown in the drawings without creative labor for the ordinary skilled in the art.

[0020] Fig. 1 Structure diagram of one embodiment of the fundus illuminating device provided by the utility model;

[0021] Fig. 2 Structure diagram of one embodiment of the fundus illuminating device provided by the utility model;

[0022] Fig. 3 Structure diagram of one embodiment of the fundus illuminating device provided by the utility model;

[0023] Explanation of reference numerals:

[0024] 1, fundus illuminating device; 11, light source barrel; 111, emitting end; 112, main barrel; 113, end head barrel; 12, assembly sleeve; 13, lens assembly; 131, support; 132, rotating shaft; 133, damping shaft sleeve; 134, light-increasing lens; 135, light-decreasing lens; 136, focusing lens; 137, diverging lens; 14, light shielding ring; 16, lens outer frame.

[0025] The utility model discloses the realization, functional characteristics and advantages will be further explained with reference to the embodiment. Specific implementation

[0026] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0027] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture, if the certain posture changes, the directional indications also change accordingly.

[0028] In addition, if the description of "first", "second" and the like is involved in the embodiments of the utility model, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the same or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, if "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, also not within the protection scope required by the utility model.

[0029] Please refer to Figs. 1 to 3 The utility model provides a kind of fundus illumination device 1, including light source barrel 11, assembly sleeve 12 and lens assembly 13, light source barrel 11 has emission end 111, emission end 111 is used to emit illumination light; assembly sleeve 12 is connected to the outer wall of light source barrel 11, and is close to emission end 111 setting, the axis of assembly sleeve 12 is parallel with the axis of light source barrel 11 setting;Lens assembly 13 includes support 131, light-increasing lens 134 and light-reducing lens 135, support 131 is rotatably connected to assembly sleeve 12, light-increasing lens 134 and light-reducing lens 135 are connected to support 131, light-increasing lens 134 and light-reducing lens 135 can rotate with support 131, to cover emission end 111 switchably.

[0030] Before the fundus illumination device 1 in the utility model is used to illuminate and examine the fundus of patient, light-reducing lens 135 can be rotated to cover emission end 111 first, then light source barrel 11 power is started, so that the light intensity of light emitted by light source barrel 11 is weakened after light-reducing lens 135, and the light does not produce strong uncomfortable feeling after irradiating to human eye, and examiner can carry out preliminary examination under weak light, after being detected person adapts to illumination, examiner rotates light-increasing lens 134 to cover emission end 111, to carry out fine examination to the fundus of the person being detected, without affecting examination efficiency and examination accuracy.

[0031] In some embodiments of this utility model, the bracket 131 includes a rotating shaft 132 and a damping sleeve 133. The damping sleeve 133 is fitted between the rotating shaft 132 and the mounting sleeve 12, so that the rotating shaft 132 is connected to the mounting sleeve 12 with damped rotation. The brightening lens 134 and the neutralizing lens 135 are connected to the end of the rotating shaft 132 exposed outside the mounting sleeve 12. The damping sleeve 133 provides a damping effect during rotation, making the bracket 131 rotate more smoothly and reducing lens jitter caused by rapid or violent rotation, thereby ensuring the stability of the illumination light. The damping sleeve 133 can improve the accuracy of the lens position, so that the brightening lens 134 and the neutralizing lens 135 can be accurately aligned with the emitting end 111 of the light source tube 11, ensuring effective light adjustment.

[0032] In some embodiments of this invention, the lens assembly 13 further includes a focusing lens 136, which is connected to the rotation shaft 132 and is arranged circumferentially at intervals along the rotation shaft 132 with the brightness enhancement lens 134 and the light reduction lens 135 to switchably cover the emitting end 111. The fundus illumination device 1 has a zoom capability, which can adjust the focal length of the illumination light according to the needs of the examination to adapt to fundus examinations at different distances, thereby improving the clarity of the image and the accuracy of the examination.

[0033] In some embodiments of this invention, the lens assembly 13 further includes a diverging lens 137. The diverging lens 137 is connected to the rotation shaft 132 and is arranged circumferentially at intervals along the rotation shaft 132 with the focusing lens 136, the brightening lens 134, and the light-reducing lens 135 to switchably cover the emitting end 111. The diverging lens 137 can deflect and diverge light as it passes through. By adjusting the diverging lens 137, the diffusion degree of the illumination beam can be changed, thereby adjusting the illumination range to adapt to different inspection needs.

[0034] In some embodiments of this invention, the damping bushing 133 is made of nylon. Nylon has good wear resistance and corrosion resistance, making it suitable for use under lower loads and speeds.

[0035] In some embodiments of this utility model, the outer wall of the mounting sleeve 12 and the light source sleeve 11 are integrally formed. This integral design makes the entire device more compact, reduces the number of assembly parts, and thus saves space, allowing the fundus illumination device 1 to be designed to be more portable or easier to assemble. The integral design also reduces connecting parts, thereby reducing stability issues caused by improper connections or loose parts, and improving the overall stability and durability of the device.

[0036] In some embodiments of the present application, the light source barrel 11 includes a main barrel 112 and an end barrel 113, the end barrel 113 is coaxially and detachably connected to one end of the main barrel 112, the assembly sleeve 12 is away from one end of the main barrel 112 to form an emission end 111, and the assembly sleeve 12 is integrally connected with the end barrel 113. The detachable design of the end barrel 113 makes the maintenance and upgrading of the light source barrel 11 more simple. If the light source needs to be replaced or repaired, only the end barrel 113 needs to be disassembled without replacing the entire light source barrel 11, which reduces the maintenance cost and improves the efficiency. The integrally formed design of the assembly sleeve 12 and the end barrel 113 provides higher structural stability. This rigid connection reduces stability problems caused by improper connection or loose parts.

[0037] In some embodiments of the present application, the end barrel 113 is a tapered barrel, and the outer diameter of the end barrel 113 is reduced in the direction away from the main barrel 112 along the axial direction. The tapered end barrel 113 can help better control the distribution and range of the illumination light, so that the illumination is more concentrated or distributed according to a specific pattern. The tapered design helps to reduce unnecessary stray light, improve lighting quality, and thus improve the clarity and contrast of imaging.

[0038] In some embodiments of the present application, the light source barrel 11 further includes a light shielding ring 14, the light shielding ring 14 is installed on the end face of the end barrel 113 away from the main barrel 112, and the light shielding ring 14 is attached to the periphery of a lens in the lens assembly 13. The main function of the light shielding ring 14 is to reduce the interference of stray light and improve the imaging quality. By attaching to the periphery of the lens, the light shielding ring 14 can block unnecessary side light, avoiding the impact of these light on the imaging quality.

[0039] In some embodiments of the present application, the light shielding ring 14 is an elastic member, the inner ring surface of the light shielding ring 14 is formed with an inclined surface, the inclined surface is inclined away from the center in the direction away from the end barrel 113, and one end of each lens of the lens assembly 13 is formed with a chamfered surface. In this way, the inclined surface of the light shielding ring 14 and the corresponding chamfered surface of the lens can be tightly matched to form a positioning effect, and the elastic light shielding ring 14 is attached to the periphery of the lens in the lens assembly 13, which can adjust the position of the light shielding ring 14 according to the diameter of different lenses, further ensuring that the stray light can be effectively shielded under various conditions, and improving the optical performance of the entire optical system.

[0040] The above description is only an exemplary embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. An ocular fundus illumination device (1), characterized in that The application relates to a light source barrel (11) having an emitting end (111) for emitting illuminating light rays; a fitting sleeve (12) connected to the outer wall of the light source barrel (11) and arranged close to the emitting end (111), the axis of the fitting sleeve (12) being arranged in parallel with the axis of the light source barrel (11); and a lens assembly (13) comprising a support (131), a light-increasing lens (134) and a light-decreasing lens (135), the support (131) being rotatably connected to the fitting sleeve (12), the light-increasing lens (134) and the light-decreasing lens (135) being connected to the support (131) and being rotatable with the support (131) to switchably cover the emitting end (111). The support (131) comprises a rotating shaft (132) and a damping sleeve (133) sleeved between the rotating shaft (132) and the fitting sleeve (12) to rotatably connect the rotating shaft (132) to the fitting sleeve (12), the light-increasing lens (134) and the light-decreasing lens (135) being connected to the end of the rotating shaft (132) exposed outside the fitting sleeve (12). The lens assembly (13) further comprises a focusing lens (136) connected to the rotating shaft (132) and arranged in a circumferential interval with the light-increasing lens (134) and the light-decreasing lens (135) along the rotating shaft (132) to switchably cover the emitting end (111). The lens assembly (13) further comprises a diverging lens (137) connected to the rotating shaft (132) and arranged in a circumferential interval with the focusing lens (136), the light-increasing lens (134) and the light-decreasing lens (135) along the rotating shaft (132) to switchably cover the emitting end (111).

2. Fundus illumination device (1) according to claim 1, characterized in that The damping sleeve (133) is made of nylon.

3. Fundus illumination device (1) according to claim 2, characterized in that The fitting sleeve (12) is integrally formed with the outer wall of the light source barrel (11).

4. A fundus illumination device (1) as claimed in claim 3, characterized in that The light source barrel (11) comprises a main barrel (112) and an end barrel (113) coaxially and detachably connected to one end of the main barrel (112), the fitting sleeve (12) being integrally formed with the end barrel (113) and away from the main barrel (112) to form the emitting end (111).

5. A fundus illumination device (1) as claimed in claim 2, characterized in that The end barrel (113) is a tapered barrel, the outer diameter of the end barrel (113) being reduced in the direction away from the main barrel (112) along the axis.

6. Fundus illumination device (1) according to any one of claims 1 to 5, characterized in that The light source barrel (11) further comprises a light-shielding ring (14) mounted on the end face of the end barrel (113) away from the main barrel (112) and abutting the periphery of one lens in the lens assembly.

7. A fundus illumination device (1) as claimed in claim 6, characterized in that ​ 8. A fundus illumination device (1) as claimed in claim 7, characterized in that ​ 9. A fundus illumination device (1) as claimed in claim 7, characterized in that ​ 10. A fundus illumination device (1) as claimed in claim 9, characterized in that The light shielding ring (14) is an elastic member, an inner ring surface of the light shielding ring (14) is formed with an inclined surface, the inclined surface is arranged to be inclined to a direction away from the center in a direction away from the end head cylinder (113), and one end of each lens of the lens assembly is formed with a chamfered surface.

Images