Lens testing device

Abstract

The utility model provides a lens testing device, and belongs to the technical field of lens testing equipment. The lens testing device comprises a breathing simulation mechanism and a low-temperature box, a human head model is arranged in the low-temperature box, the human head model and the breathing simulation mechanism are connected together through a corrugated guide pipe, the corrugated guide pipe penetrates through the low-temperature box, the breathing simulation mechanism is used for simulating the breathing action of a person, and the human head model is connected with the low-temperature box. A locking mechanism is arranged in the low-temperature box, during use and inspiration, the breathing simulation mechanism works to suck cold air in the low-temperature box into the low-temperature box through a mask filtering part, an inspiration valve and an eye window area through the mouth of the head model, the breathing process of a person is simulated repeatedly in this way, and the time, area and part of aerial fog on the inner surface of a mask lens are observed. According to the lens testing device, different types of head models can be conveniently installed and fixed, the applicability is high, and better use experience is brought to a user.

Description

Technical Field

[0001] The present application relates to the technical field of lens testing equipment, and in particular to a lens testing device. Background Art

[0002] The low-temperature brightness retention performance test of protective mask lenses is used to test various data and aerosol and frost conditions of the lenses in a low-temperature environment, and determine the test time according to the brightness retention performance index requirements of different masks. A human head model will be used in the brightness retention performance test, and the human head model is often installed in a low-temperature box. Different types of protective masks (protective masks used by adults and children are of different sizes) require different types of human head models, but the current low-temperature boxes cannot adapt to the installation and fixation of different types of human head models, and have poor applicability, which brings a bad user experience. Utility Model Content

[0003] In order to make up for the above shortcomings, the present application provides a lens testing device, which aims to improve the human head model used in the vision protection performance test. The human head model is often installed in a low-temperature box. Different types of protective masks (protective masks used by adults and children are of different sizes) require different types of human head models, but the current low-temperature box cannot adapt to the installation and fixation of different types of human head models, resulting in poor applicability.

[0004] This application is implemented as follows:

[0005] The present application provides a lens testing device, comprising a breathing simulation mechanism and a cryogenic box, wherein a human head model is arranged in the cryogenic box, wherein the human head model and the breathing simulation mechanism are connected together through a corrugated conduit, and the corrugated conduit runs through the cryogenic box;

[0006] The breathing simulation mechanism is used to simulate human breathing movements. A locking mechanism is provided in the low temperature box, and the locking mechanism is used to confine the human head model in the low temperature box.

[0007] In one embodiment of the present application, the breathing simulation mechanism includes an electric ventilator, a temperature controller and an airway tube, the electric ventilator and the airway tube are connected, the airway tube is provided with a one-way valve, an electromagnetic valve, a constant temperature humidifier and a regulating valve, and the temperature controller and the constant temperature humidifier are electrically connected together.

[0008] In one embodiment of the present application, interfaces are provided on both the cryogenic box and the air duct, and the corrugated conduit is installed on the interfaces.

[0009] In one embodiment of the present application, a lighting device, an electric fan, an observation window and a humidity regulator are installed on the low temperature box, the humidity regulator and the low temperature box are electrically connected together, and a temperature measuring probe is installed on the human head model.

[0010] In one embodiment of the present application, the locking mechanism includes a slide rail, a slider, a first locking member, an L-shaped plate, and a second locking member, the slide rail is installed in the low temperature box, and the slider is slidably arranged on the slide rail;

[0011] The first locking member is threadedly passed through the slider, the first locking member and the slide rail are arranged correspondingly, the L-shaped plate is fixed on the upper surface of the slider, and the second locking member is threadedly passed through the L-shaped plate.

[0012] In one embodiment of the present application, a groove is provided on the low temperature box, and the slide rail is fixed in the groove.

[0013] The beneficial effects of the present application are as follows: the lens testing device obtained by the above design of the present application, when in use, opens the door of the low temperature box, selects human head models of different models according to the model of the anti-blocking mask, places the human head model at a designated position in the low temperature box, moves the slider to make the L-shaped plate abut against the human head model, then rotates the first locking piece, and the lower end of the first locking piece squeezes the upper end of the slide rail to fix the slider on the slide rail, and then rotates the second locking piece to make the lower end of the second locking piece squeeze on the human head model, and under the joint action of the L-shaped plate and the second locking piece, the human head model is restricted and fixed in the low temperature box, the corrugated conduit is installed on the human head model, and then the protective mask is put on the human head model, and the door of the box is closed, and the low temperature box is closed. Working refrigeration, the electric respirator and the constant temperature humidifier work after the specified time. When exhaling, the electric respirator exhales warm and humid air of specified temperature and specified relative humidity into the mouth and nose area of ​​the protective mask through the mouth of the human head model, and exhales it to the outside of the low temperature box through the exhalation valve of the mask and another corrugated duct. When inhaling, the breathing simulation mechanism works to suck the cold air in the low temperature box through the mask filter component, the inhalation valve, the eye window area and the mouth of the human head model into it. This repeatedly simulates the human breathing process, observes the time, area and position of the mist on the inner surface of the mask lens, and evaluates the mask's eye-keeping performance. The lens testing device is easy to install and fix on human head models of different models, has strong applicability, and brings users a better use experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 is a structural schematic diagram of a lens testing device provided in an embodiment of the present application;

[0016] Figure 2 Provided for the implementation of this application Figure 1 Magnified view of area A.

[0017] In the figure: 110 - breathing simulation mechanism; 111 - electric ventilator; 112 - one-way valve; 113 - electromagnetic valve; 114 - regulating valve; 115 - constant temperature humidifier; 116 - temperature controller; 117 - airway; 120 - low temperature box; 130 - corrugated duct; 140 - interface; 150 - human head model; 160 - lighting device; 170 - electric fan; 180 - observation window; 190 - humidity regulator; 191 - locking mechanism; 1911 - groove; 1912 - slide rail; 1913 - slide block; 1914 - first locking piece; 1915 - L-shaped plate; 1916 - second locking piece; 192 - temperature measuring probe. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the implementation methods of this application clearer, the technical solutions in the implementation methods of this application will be clearly and completely described below in conjunction with the drawings in the implementation methods of this application. Obviously, the described implementation methods are part of the implementation methods of this application, not all of the implementation methods. Based on the implementation methods in this application, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0019] Example

[0020] See also Figure 1 and Figure 2 The present application provides a technical solution: a lens testing device, comprising a breathing simulation mechanism 110 and a cryogenic box 120, wherein a human head model 150 is arranged in the cryogenic box 120, the human head model 150 and the breathing simulation mechanism 110 are connected together through a corrugated conduit 130, the breathing simulation mechanism 110 comprises an electric respirator 111, a temperature controller 116 and an airway 117, the electric respirator 111 and the airway 117 are in communication, a one-way valve 112, an electromagnetic valve 113, a constant temperature humidifier 115 and a regulating valve 114 are arranged on the airway 117, the temperature controller 116 and the constant temperature humidifier 115 are electrically connected together, the constant temperature humidifier 115 and the temperature controller 116 are arranged to control the temperature and humidity of the air exhaled to the protective mask, the cryogenic box 120 and the airway 117 are both provided with an interface 140, the corrugated conduit 130 is installed on the interface 140, and the corrugated conduit 130 runs through the cryogenic box 120;

[0021] The breathing simulation mechanism 110 is used to simulate the breathing action of a person. A locking mechanism 191 is provided in the low temperature box 120. The locking mechanism 191 is used to restrict the human head model 150 in the low temperature box 120. The low temperature box 120 is equipped with a lighting device 160, an electric fan 170, an observation window 180 and a humidity regulator 190. The humidity regulator 190 and the low temperature box 120 are electrically connected together. A temperature measuring probe 192 is installed on the human head model 150. The lighting device 160 is used to illuminate the low temperature box 120. The observation window 180 is used to observe the lens on the protective mask. The locking mechanism 191 includes a slide rail 1912, a slider 1913, a first locking member 1914, an L-shaped plate 1915 and a second locking member 1916. The slide rail 1912 is installed in the low temperature box 120, and the slider 1913 is slidably arranged on the slide rail 1912.

[0022] The first locking member 1914 is threadedly passed through the slider 1913, and the first locking member 1914 and the slide rail 1912 are arranged correspondingly. The L-shaped plate 1915 is fixed on the upper surface of the slider 1913, and the second locking member 1916 is threadedly passed through the L-shaped plate 1915. The setting of the locking mechanism 191 is used to restrict different types of human head models 150 in the low temperature box 120. In this embodiment, the first locking member 1914 and the second locking member 1916 are both bolts. The low temperature box 120 is provided with a groove 1911, and the slide rail 1912 is fixed in the groove 1911. The setting of the groove 1911 is used to install the slide rail 1912 into the low temperature box 120.

[0023] Specifically, the working principle of the lens testing device is as follows: when in use, the door of the low temperature box 120 is opened, and different models of human head models 150 are selected according to the model of the anti-blocking mask, and the human head model 150 is placed at a designated position in the low temperature box 120, and the slider 1913 is moved to make the L-shaped plate 1915 close to the human head model 150, and then the first locking member 1914 is rotated, and the lower end of the first locking member 1914 is pressed against the upper end of the slide rail 1912, so that the slider 1913 is fixed on the slide rail 1912, and then the second locking member 1916 is rotated to make the lower end of the second locking member 1916 squeeze on the human head model 150, and under the joint action of the L-shaped plate 1915 and the second locking member 1916, the human head model 150 is restricted and fixed in the low temperature box 120, and the corrugated conduit 130 is installed on the human head model 150, and then the protective mask is put on the human head. On the model 150, close the box door, the low temperature box 120 works for refrigeration, and after a specified time, the electric respirator 111 and the constant temperature humidifier 115 work. When exhaling, the electric respirator 111 exhales warm and humid air of a specified temperature and a specified relative humidity into the mouth and nose area of ​​the protective mask through the mouth of the human head model 150, and exhales it to the outside of the low temperature box 120 through the exhalation valve of the mask and another corrugated duct 130. When inhaling, the breathing simulation mechanism 110 works to suck the cold air in the low temperature box 120 into the mask filter component, the inhalation valve, and the eye window area through the mouth of the human head model 150. In this way, the human breathing process is repeatedly simulated, and the time, area and position of the mist on the inner surface of the mask lens are observed to evaluate the mask's eye-keeping performance. The lens testing device is convenient for installing and fixing human head models 150 of different models, has strong applicability, and brings better user experience.

[0024] It should be noted that the specific models and specifications of the electric ventilator 111, constant temperature humidifier 115, temperature controller 116, low temperature box 120, lighting device 160, electric fan 170 and humidity regulator 190 need to be selected and determined based on the actual specifications of the device. The specific selection calculation method adopts the existing technology in the field, so it will not be described in detail.

[0025] The power supply and principles of the electric ventilator 111, the constant temperature humidifier 115, the temperature controller 116, the low temperature box 120, the lighting device 160, the electric fan 170 and the humidity regulator 190 are clear to those skilled in the art and will not be described in detail here.

[0026] The above description is only an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

Claims

1. A lens testing device, characterized in that: It comprises a breathing simulation mechanism (110) and a low temperature box (120), wherein a human head model (150) is arranged in the low temperature box (120), and the human head model (150) and the breathing simulation mechanism (110) are connected together via a corrugated conduit (130), and the corrugated conduit (130) runs through the low temperature box (120); The breathing simulation mechanism (110) is used to simulate a person's breathing action, and a locking mechanism (191) is provided in the low temperature box (120). The locking mechanism (191) is used to restrict the human head model (150) in the low temperature box (120).

2. A lens testing device according to claim 1, characterized in that: The breathing simulation mechanism (110) comprises an electric ventilator (111), a temperature controller (116) and an airway tube (117); the electric ventilator (111) and the airway tube (117) are in communication with each other; the airway tube (117) is provided with a one-way valve (112), an electromagnetic valve (113), a constant temperature humidifier (115) and a regulating valve (114); the temperature controller (116) and the constant temperature humidifier (115) are electrically connected together.

3. A lens testing device according to claim 2, characterized in that: The low temperature box (120) and the air guide tube (117) are both provided with an interface (140), and the corrugated conduit (130) is installed on the interface (140).

4. A lens testing device according to claim 1, characterized in that: The low-temperature box (120) is equipped with a lighting device (160), an electric fan (170), an observation window (180) and a humidity regulator (190); the humidity regulator (190) and the low-temperature box (120) are electrically connected together; and the human head model (150) is equipped with a temperature measuring probe (192).

5. The lens testing device according to claim 1, characterized in that: The locking mechanism (191) comprises a slide rail (1912), a slider (1913), a first locking member (1914), an L-shaped plate (1915) and a second locking member (1916); the slide rail (1912) is installed in the low temperature box (120); and the slider (1913) is slidably disposed on the slide rail (1912); The first locking member (1914) is threadedly inserted through the slider (1913); the first locking member (1914) and the slide rail (1912) are arranged correspondingly; the L-shaped plate (1915) is fixed on the upper surface of the slider (1913); and the second locking member (1916) is threadedly inserted through the L-shaped plate (1915).

6. A lens testing device according to claim 5, characterized in that: The low temperature box (120) is provided with a groove (1911), and the slide rail (1912) is fixed in the groove (1911).

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