Hair removal device with uniform light output

By employing a light-uniforming component composed of multiple wedge-shaped reflectors and a sapphire glass structure in the laser hair removal device, the problem of uneven light energy has been solved, improving the uniformity of light output and ensuring treatment effectiveness and user safety.

CN224331022UActive Publication Date: 2026-06-09SHENZHEN LIDIAN TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHENZHEN LIDIAN TECH CO LTD
Filing Date
2024-12-30
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing laser hair removal devices suffer from insufficient light energy density and energy uniformity, resulting in burns in areas with high energy and ineffective treatment in areas with low energy.

Method used

The structure includes a housing, a light source, a light homogenizer, and a light-emitting surface. The light homogenizer consists of multiple wedge-shaped reflectors, forming a hollow cone or trapezoidal structure. Combined with sapphire glass and a light-emitting cover, it ensures uniform distribution of light energy.

Benefits of technology

It achieves uniform distribution of light energy, with a light emission uniformity of over 80%, avoiding burns caused by uneven energy distribution and improving treatment effectiveness and user comfort.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224331022U_ABST
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Abstract

The utility model provides a kind of light-emitting uniform depilatory, including shell, light-emitting component is arranged in the shell, the light-emitting component includes light source, light uniform part and light-emitting surface, the light uniform part is located in the light-emitting side of light source, the light-emitting surface is located in the light-emitting side of light uniform part, the light uniform part includes first wedge-shaped reflector and second wedge-shaped reflector, the inner side of first wedge-shaped reflector and second wedge-shaped reflector is reflection surface, the side of first wedge-shaped reflector is connected with second wedge-shaped reflector, form a hollow cone, the wide mouth of hollow cone is located in the side of light source, the narrow mouth of hollow cone is located in the side of light-emitting surface.The utility model is mainly applicable to laser hair removal instrument, by laser light source cooperation this light uniform part, light-emitting uniformity can reach more than 80%, its structure is simple, and cost is lower.
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Description

Technical Field

[0001] This utility model relates to the field of hair removal devices, and in particular to a hair removal device with uniform light emission. Background Technology

[0002] Laser hair removal devices work by irradiating the skin with light of a specific wavelength. Under a specific treatment area, the hair follicles absorb the light energy to achieve the desired therapeutic effect. The energy density and uniformity of the light on the treatment surface are crucial. Insufficient energy will not achieve the desired therapeutic effect, while uneven energy distribution can lead to burns in areas of high energy and ineffective treatment in areas of low energy. Therefore, current technology still needs improvement and refinement. Utility Model Content

[0003] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a hair removal device with uniform light emission.

[0004] To solve the above technical problems, the present invention adopts the following technical solution:

[0005] This utility model provides a hair removal device with uniform light emission, including a housing. A light-emitting component is disposed inside the housing. The light-emitting component includes a light source, a light-diffusing element, and a light-emitting surface. The light-diffusing element is located on the light-emitting side of the light source, and the light-emitting surface is located on the light-emitting side of the light-diffusing element. The light-diffusing element includes a first wedge-shaped reflector and a second wedge-shaped reflector. The inner surfaces of the first and second wedge-shaped reflectors are reflective surfaces. The first and second wedge-shaped reflectors are connected to each other on their sides to form a hollow cone. The wide opening of the hollow cone is located on the side where the light source is located, and the narrow opening of the hollow cone is located on the side where the light-emitting surface is located.

[0006] Furthermore, in the hair removal device with uniform light emission, the light-uniforming component further includes a third wedge-shaped reflector and a fourth wedge-shaped reflector. The inner surfaces of the third and fourth wedge-shaped reflectors are reflective surfaces. The first wedge-shaped reflector is connected to the side of the second wedge-shaped reflector, the second wedge-shaped reflector is connected to the side of the third wedge-shaped reflector, the third wedge-shaped reflector is connected to the side of the fourth wedge-shaped reflector, and the fourth wedge-shaped reflector is connected to the side of the first wedge-shaped reflector, forming a trapezoidal hollow cone.

[0007] Furthermore, in the hair removal device with uniform light output, the light-uniforming component further includes a third wedge-shaped reflector, the inner surface of which is a reflective surface. The first wedge-shaped reflector is connected to the side of the second wedge-shaped reflector, the second wedge-shaped reflector is connected to the side of the third wedge-shaped reflector, and the third wedge-shaped reflector is connected to the side of the first wedge-shaped reflector, forming a hollow cone in the shape of a triangle.

[0008] Furthermore, in the hair removal device with uniform light emission, a sapphire glass is provided on the light emission side of the light-emitting component, the top surface of the sapphire glass is located on the light emission side of the light-emitting component, and the bottom surface of the sapphire glass is the light emission surface.

[0009] Furthermore, in the hair removal device with uniform light emission, a light emission cover is provided on the outer side of the sapphire glass and the light-emitting component.

[0010] Furthermore, in the hair removal device with uniform light emission, a pair of positioning pins are inserted into the light emission cover, and a pair of positioning holes are provided on the sapphire glass, with the positioning pins installed in the corresponding positioning holes.

[0011] Furthermore, in the hair removal device with uniform light emission, a heating and cooling plate is provided on the inner side of the sapphire glass, and the heating and cooling plate is connected to heat dissipation fins.

[0012] Furthermore, in the hair removal device with uniform light emission, the heat dissipation fins are vertically sandwiched between the housing and the sapphire glass, and heat dissipation strip holes are provided on one side of the housing of the heat dissipation fins.

[0013] Furthermore, the hair removal device with uniform light emission has a skin tone sensor installed on the light emission surface.

[0014] Furthermore, in the hair removal device with uniform light emission, the light source is a laser module, and the vertical distance from the laser module to the light emission surface is 15mm-35mm.

[0015] Compared to existing technologies, this utility model provides a hair removal device with uniform light emission, comprising a housing, within which a light-emitting component is disposed. The light-emitting component includes a light source, a light-diffusing element, and a light-emitting surface. The light-diffusing element is located on the light-emitting side of the light source, and the light-emitting surface is located on the light-emitting side of the light-diffusing element. The light-diffusing element includes a first wedge-shaped reflector and a second wedge-shaped reflector, the inner surfaces of which are reflective surfaces. The first and second wedge-shaped reflectors are connected to their sides to form a hollow cone. The wide opening of the hollow cone is located on the side where the light source is located, and the narrow opening is located on the side where the light-emitting surface is located. This utility model is mainly applicable to laser hair removal devices. By using a laser light source in conjunction with this light-diffusing element, the light emission uniformity can reach over 80%. It has a simple structure and low cost. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. 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 the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the exploded state structure of the hair removal device with uniform light emission provided by this utility model.

[0018] Figure 2 This is a schematic diagram of another exploded state of the hair removal device with uniform light emission provided by this utility model.

[0019] Figure 3 This is a top view of the uniform light output component of the hair removal device provided by this utility model.

[0020] Explanation of icon numbers:

[0021] 100 shell

[0022] Light source 110

[0023] 120 light-diffusing component

[0024] First wedge-shaped reflector 121

[0025] Second wedge-shaped reflector 122

[0026] Third wedge-shaped reflector 123

[0027] Fourth wedge-shaped reflector 124

[0028] Sapphire glass 130

[0029] Light hood 140

[0030] Positioning pin 141

[0031] Positioning hole 131

[0032] 150 hot and cold plates

[0033] Heatsink fins 151

[0034] 152 heat dissipation holes

[0035] Skin tone sensor 160 Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0038] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0039] like Figure 1 , Figure 2 and Figure 3 As shown, this utility model provides a hair removal device with uniform light emission, including a housing 100. A light-emitting component is disposed inside the housing 100. The light-emitting component includes a light source 110, a light-diffusing element 120, and a light-emitting surface. The light-diffusing element 120 is located on the light-emitting side of the light source 110, and the light-emitting surface is located on the light-emitting side of the light-diffusing element 120. The light-diffusing element 120 includes a first wedge-shaped reflector 121 and a second wedge-shaped reflector 122. The inner surfaces of the first wedge-shaped reflector 121 and the second wedge-shaped reflector 122 are reflective surfaces. The first wedge-shaped reflector 121 and the side of the second wedge-shaped reflector 122 are connected to form a hollow cone. The wide opening of the hollow cone is located on the side where the light source 110 is located, and the narrow opening of the hollow cone is located on the side where the light-emitting surface is located. The simplest structure of this utility model can be composed of a first wedge-shaped reflector 121 and a second wedge-shaped reflector 122. The first wedge-shaped reflector 121 and the second wedge-shaped reflector 122 are centrally symmetrical. The first wedge-shaped reflector 121 and the second wedge-shaped reflector 122 can both be arc-shaped sheet structures forming a hollow conical structure, or they can both be zigzag sheet structures forming a hollow pyramidal structure.

[0040] Furthermore, the hair removal device with uniform light output provided by this utility model includes a third wedge-shaped reflector 123 and a fourth wedge-shaped reflector 124 in the light-uniforming component 120. The inner surfaces of the third wedge-shaped reflector 123 and the fourth wedge-shaped reflector 124 are reflective surfaces. The first wedge-shaped reflector 121 is connected to the side of the second wedge-shaped reflector 122, the second wedge-shaped reflector 122 is connected to the side of the third wedge-shaped reflector 123, the third wedge-shaped reflector 123 is connected to the side of the fourth wedge-shaped reflector 124, and the fourth wedge-shaped reflector 124 is connected to the side of the first wedge-shaped reflector 121, forming a trapezoidal hollow cone. This structure, composed of four wedge-shaped reflectors, is simple in structure and can achieve a light output uniformity of over 85%.

[0041] Preferably, in other embodiments of the hair removal device with uniform light emission provided by this utility model, the light-uniforming component further includes a third wedge-shaped reflector. The inner surface of the third wedge-shaped reflector is a reflective surface. The first wedge-shaped reflector is connected to the side of the second wedge-shaped reflector, the second wedge-shaped reflector is connected to the side of the third wedge-shaped reflector, and the third wedge-shaped reflector is connected to the side of the first wedge-shaped reflector, forming a hollow cone in a triangular shape. This is a special case suitable for uniform light emission of small light spots. The treatment surface is generally rectangular; a trapezoidal hollow cone design is more suitable in ordinary cases.

[0042] Furthermore, in the hair removal device with uniform light emission provided by this utility model, a sapphire glass 130 is provided on the light emission side of the light-emitting component 120, with the top surface of the sapphire glass 130 located on the light emission side of the light-emitting component 120, and the bottom surface of the sapphire glass 130 serving as the light emission surface. The sapphire glass 130 helps to create a freezing point effect during hair removal. Other light-transmitting components can also be used to replace the sapphire glass 130, but it is currently the mainstream choice. Furthermore, in the hair removal device with uniform light emission provided by this utility model, a light emission cover 140 is provided on the outer side of the sapphire glass 130 and the light-emitting component 120. Furthermore, in the hair removal device with uniform light emission provided by this utility model, a pair of positioning pins 141 are inserted into the light emission cover 140, and a pair of positioning holes 131 are provided on the sapphire glass 130, with the positioning pins 141 installed in the corresponding positioning holes 131. The light emitter cover 140 serves to assemble the light source 110, the light homogenizer 120, and the sapphire glass 130, creating a better light emission environment and ensuring the stability of the relative distance between the light source 110 and the light emission surface. Moreover, the sapphire glass 130 can be quickly installed through the positioning pin 141 and the positioning hole 131. The light homogenizer 120 is located inside the light emitter cover 140 and is sandwiched between the light source 110 and the light homogenizer 120.

[0043] Furthermore, in the hair removal device with uniform light emission provided by this utility model, a heat-conducting heating element 150 is provided on the inner side of the sapphire glass 130, and the heat-conducting heating element 150 is connected to a heat dissipation fin 151. This can increase the cooling effect and improve user comfort. Furthermore, in the hair removal device with uniform light emission provided by this utility model, the heat dissipation fin 151 is vertically clamped between the housing 100 and the sapphire glass 130, and a heat dissipation strip hole 152 is provided on one side of the housing 100 of the heat dissipation fin 151. The heat dissipation strip hole 152 is located at the head of the housing 100 and is arranged symmetrically around both sides of the head, which can greatly increase the heat dissipation area for heat exchange with the outside air, further ensuring the cooling effect.

[0044] Furthermore, the hair removal device with uniform light emission provided by this utility model includes a skin tone sensor 160 at the light emission surface for detecting the skin tone of the treatment area. Furthermore, the hair removal device with uniform light emission provided by this utility model includes a laser module as the light source 110, and the vertical distance from the laser module to the light emission surface is 15mm-35mm, specifically, the vertical distance from the laser module to the light emission surface can be 25mm.

[0045] In summary, this utility model provides a hair removal device with uniform light emission, comprising a housing, within which a light-emitting component is disposed. The light-emitting component includes a light source, a light-diffusing element, and a light-emitting surface. The light-diffusing element is located on the light-emitting side of the light source, and the light-emitting surface is located on the light-emitting side of the light-diffusing element. The light-diffusing element includes a first wedge-shaped reflector and a second wedge-shaped reflector, the inner surfaces of which are reflective surfaces. The first wedge-shaped reflector and the second wedge-shaped reflector are connected to their sides to form a hollow cone. The wide opening of the hollow cone is located on the side where the light source is located, and the narrow opening is located on the side where the light-emitting surface is located. This utility model is mainly applicable to laser hair removal devices. By using a laser light source in conjunction with this light-diffusing element, the light emission uniformity can reach over 80%. It has a simple structure and low cost.

[0046] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A hair removal device with uniform light emission, characterized in that, The device includes a housing, within which a light-emitting component is disposed. The light-emitting component includes a light source, a light-diffusing element, and a light-emitting surface. The light-diffusing element is located on the light-emitting side of the light source, and the light-emitting surface is located on the light-emitting side of the light-diffusing element. The light-diffusing element includes a first wedge-shaped reflector and a second wedge-shaped reflector. The inner surfaces of the first and second wedge-shaped reflectors are reflective surfaces. The first and second wedge-shaped reflectors are connected to each other on their sides to form a hollow cone. The wide opening of the hollow cone is located on the side where the light source is located, and the narrow opening of the hollow cone is located on the side where the light-emitting surface is located.

2. The hair removal device with uniform light emission according to claim 1, characterized in that, The light-diffusing element further includes a third wedge-shaped reflector and a fourth wedge-shaped reflector. The inner surfaces of the third and fourth wedge-shaped reflectors are reflective surfaces. The first wedge-shaped reflector is connected to the side of the second wedge-shaped reflector, the second wedge-shaped reflector is connected to the side of the third wedge-shaped reflector, the third wedge-shaped reflector is connected to the side of the fourth wedge-shaped reflector, and the fourth wedge-shaped reflector is connected to the side of the first wedge-shaped reflector, forming a trapezoidal hollow cone.

3. The hair removal device with uniform light emission according to claim 1, characterized in that, The light-diffusing element also includes a third wedge-shaped reflector, the inner surface of which is a reflective surface. The first wedge-shaped reflector is connected to the side of the second wedge-shaped reflector, the second wedge-shaped reflector is connected to the side of the third wedge-shaped reflector, and the third wedge-shaped reflector is connected to the side of the first wedge-shaped reflector, forming a hollow cone in the shape of a triangle.

4. The hair removal device with uniform light emission according to claim 1, characterized in that, The light-emitting side of the light-diffusing element is provided with sapphire glass, the top surface of the sapphire glass is located on the light-emitting side of the light-diffusing element, and the bottom surface of the sapphire glass is the light-emitting surface.

5. The hair removal device with uniform light emission according to claim 4, characterized in that, The outer side of the sapphire glass and the light-diffusing element is covered with a light-emitting cover.

6. The hair removal device with uniform light emission according to claim 5, characterized in that, A pair of positioning pins are inserted into the light-emitting cover, and a pair of positioning holes are provided on the sapphire glass, with the positioning pins installed in the corresponding positioning holes.

7. The hair removal device with uniform light emission according to claim 4, characterized in that, A heat sink is provided on the inner side of the sapphire glass, and the heat sink is connected to heat dissipation fins.

8. The hair removal device with uniform light emission according to claim 7, characterized in that, The heat dissipation fins are vertically sandwiched between the housing and the sapphire glass, and heat dissipation strip holes are provided on one side of the housing.

9. The hair removal device with uniform light emission according to claim 1, characterized in that, A skin tone sensor is installed on the light-emitting surface.

10. The hair removal device with uniform light emission according to any one of claims 1-8, characterized in that, The light source is a laser module, and the vertical distance from the laser module to the light-emitting surface is 15mm-35mm.