阅读说明：本技术 一种用于视力检测的镜片组件 (Lens assembly for vision detection ) 是由 刘意 谷中秀 李媛媛 马宇 马俊磊 于 2021-09-22 设计创作，主要内容包括：本发明提供一种用于视力检测的镜片组件,包括箱体,所述箱体上设置有连通所述箱体内部的检测口,所述箱体内设置有图标组件、平面反射镜、半透半反射镜及凹面反射镜,所述图标组件包括用于显示检测图标的显示屏,所述平面反射镜的反射面面向所述显示屏设置且所述反射面能将所述显示屏发出的光线反射至所述凹面反射镜,所述半透半反射镜设置在所述反射面反射的光路上且能够将所述凹面反射镜反射的光线反射至所述口,通过凹面镜成像光路的原理,可以将轴向距离进行拉伸,因此可以较小的范围之内即可模拟较远距离的检测效果,通过显示屏显示图标的检测方法可以实现检测图标的随机切换,避免了因待检测者对检测图标进行记忆而导致的检测不准确的现象。(The invention provides a lens component for eyesight detection, which comprises a box body, wherein a detection port communicated with the interior of the box body is arranged on the box body, an icon component, a plane reflector, a semi-transparent semi-reflector and a concave reflector are arranged in the box body, the icon component comprises a display screen for displaying a detection icon, the reflecting surface of the plane reflector is arranged towards the display screen and can reflect light rays emitted by the display screen to the concave reflector, the semi-transparent semi-reflector is arranged on a light path reflected by the reflecting surface and can reflect the light rays reflected by the concave reflector to the port, the axial distance can be stretched by the principle of a concave mirror imaging light path, so that the detection effect of a longer distance can be simulated in a smaller range, and the random switching of the detection icon can be realized by the detection method of displaying the icon on the display screen, the phenomenon of inaccurate detection caused by the fact that a person to be detected memorizes the detection icon is avoided.)

1. The utility model provides a lens subassembly for visual detection, a serial communication port, includes box (1), be provided with the intercommunication on box (1) the inside detection mouth (10) of box (1), be provided with icon subassembly (2), plane mirror (11), semi-transparent semi-reflecting mirror (12) and concave surface speculum (13) in box (1), icon subassembly (2) are including being used for showing display screen (21) that detect the icon, the plane of reflection of plane speculum (11) towards display screen (21) set up just plane of reflection (110) can with the light reflection that display screen (21) sent extremely concave surface speculum (13), semi-transparent semi-reflecting mirror (12) set up the light path of plane of reflection (110) reflection and can with the light reflection of concave surface speculum (13) extremely mouth (10).

2. The assembly of claim 1, further comprising a detection channel (101) communicating the detection port (10) with the interior of the housing (1), wherein the semi-transparent half-mirror (12) reflects light in a direction parallel to the detection channel (101).

3. The assembly of claim 2, wherein the direction of travel of the light reflected by the reflective surface (110) is parallel to the direction of travel of the light reflected by the concave reflector (13).

4. The lens assembly for vision testing of claim 2, wherein said icon assembly further comprises an adjustment assembly (20) disposed between said display screen (21) and said plane mirror (11), said adjustment assembly for adjusting the size of the icon illuminated by said display screen on said plane mirror (11).

5. The lens assembly for vision test of claim 4, wherein said adjusting assembly (20) comprises a first linear adjusting assembly (202), a second linear adjusting assembly (203), and a convex lens (201) and a concave lens (202) sequentially arranged from said display screen (21) to said plane mirror (11), the adjusting directions of said first linear adjusting assembly (202) and said second linear adjusting assembly (203) are parallel, said first linear adjusting assembly (202) is used for adjusting the distance between said convex lens (201) and said concave lens (202) and the distance between said convex lens (201) and said convex lens (201), said second linear adjusting assembly (203) is used for adjusting the distance between said display screen (21) and said convex lens (202).

6. The lens assembly for vision detection as claimed in claim 5, wherein the first linear adjustment assembly (202) comprises a first adjustment screw (2021) rotatably disposed on the housing (1) and a screw nut (2022) screwed to the adjustment screw (2021), the screw nut (2022) being connected to the convex lens (202).

7. The lens assembly for vision testing as claimed in claim 6, wherein said second linear adjustment member (203) comprises an electric telescopic rod (2031), one end of said electric telescopic rod (2031) is connected to said display screen (21), and the other end is connected to said case (1).

8. The lens assembly for eyesight detection according to claim 7, further comprising a telescopic tube (204) having an axial direction parallel to the adjustment direction of the first linear adjustment assembly (202), wherein the telescopic tube (204) comprises a first tube (2041) and a second tube (2042) connected in a sleeved manner, the convex lens (202) is disposed at an opening position of the first tube (2041) far away from the second tube (2042), the display screen (21) is disposed inside the second tube (2042), the lead screw nut (2022) is connected with the first tube (2041), and the electric telescopic rod (2031) is connected with the second tube (2042).

Technical Field

The invention relates to the technical field of vision detection, in particular to a lens assembly for vision detection.

Background

The ophthalmology examination is a very common health-type conventional examination, the main examination part is the eye, the examination items are divided into a plurality of types, including vision examination, color identification examination and the like, in the examination process, a doctor needs to use a plurality of examination tools and examination means, the examination tools or equipment are classified into different types and have various examination directions and ranges, and the ophthalmology information obtained according to the examination tools has reference value and significance.

At present, the eyesight test chart is usually used for testing whether the eyesight is short-sighted or not, and an azimuth symbol E is printed on the eyesight test chart; in the in-service use in-process, illuminate the visual detection table through the light, wait to detect the personnel of eyesight and stand in one side of visual detection table and keep certain distance, wait to detect the position symbol E orientation of visual detection board printing of personnel monocular observation to detect the visual condition of waiting to detect the personnel of eyesight, but this kind of setting up mode will adopt great place could guarantee to wait to detect the person and have certain distance with the visual detection table.

Disclosure of Invention

In view of the above, the present application provides a lens assembly for vision detection to solve the technical problems in the related art.

The invention provides a lens assembly for vision detection, which comprises a box body, wherein a detection port communicated with the interior of the box body is arranged on the box body, an icon assembly, a plane reflector, a semi-transparent semi-reflector and a concave reflector are arranged in the box body, the icon assembly comprises a display screen for displaying a detection icon, the reflecting surface of the plane reflector faces the display screen and can reflect light rays emitted by the display screen to the concave reflector, and the semi-transparent semi-reflector is arranged on a light path reflected by the reflecting surface and can reflect the light rays reflected by the concave reflector to the port.

Further, the detection device also comprises a detection channel which is communicated with the detection port and the interior of the box body, and the direction of the light rays reflected by the semi-transparent semi-reflector is parallel to the detection channel.

Further, the propagation direction of the light reflected by the reflecting surface is parallel to the propagation direction of the light reflected by the concave reflecting mirror.

Further, the icon assembly further comprises an adjusting assembly arranged between the display screen and the plane mirror, and the adjusting assembly is used for adjusting the size of the icon irradiated on the plane mirror by the display screen.

Further, the regulating part includes first straight line regulating part, second straight line regulating part and certainly the display screen extremely convex lens and the concave lens that the direction of plane mirror set gradually, the regulation direction of first straight line regulating part, second straight line regulating part is parallel, first straight line regulating part is used for adjusting convex lens in between the concave lens, and convex lens with distance between the convex lens, second straight line regulating part is used for adjusting the display screen with distance between the convex lens.

Furthermore, the first linear adjusting assembly comprises a first adjusting screw rod rotatably arranged in the box body, a screw nut in threaded connection with the adjusting screw rod, and the screw nut is connected with the convex lens.

Further, the second linear adjusting piece comprises an electric telescopic rod, one end of the electric telescopic rod is connected to the display screen, and the other end of the electric telescopic rod is connected with the box body.

Further, still include that axial direction is on a parallel with the telescopic cylinder of the regulation direction of first straight line adjusting part, the telescopic cylinder is including a first section of thick bamboo and a second section of thick bamboo that the noose is connected, convex lens sets up first section of thick bamboo is kept away from the open position of a second section of thick bamboo, the display screen sets up inside a second section of thick bamboo, screw-nut with first section of thick bamboo is connected, electric telescopic handle with a second section of thick bamboo is connected.

The invention provides a lens component for eyesight detection, which is characterized in that a display screen is arranged for displaying a detection icon and transmitting light to a plane reflector, the plane reflector irradiates the light to a concave reflector through a semi-transparent semi-reflector, the concave reflector reflects the light to the semi-transparent semi-reflector and the light is reflected from a detection port through the semi-transparent semi-reflector, the axial distance can be stretched due to the principle of a concave mirror imaging light path, so that the detection effect of a longer distance can be simulated in a smaller range, a detected person can put eyes at the detection port for observation, the detection icon can be observed from the observation port, and the display icons with different sizes can be displayed through an icon component during the inspection, thereby realizing the eyesight detection of the detected person, and realizing the random switching of the detection icons through the method of displaying the detection icons through the display screen, the phenomenon of inaccurate detection caused by the fact that a person to be detected memorizes the detection icon is avoided.

In addition, when setting up concave surface speculum, semi-permeable half-reflecting mirror, display screen and plane mirror, through the angle between the control three, make the process the propagation direction of the light that the plane of reflection reflects with the process the propagation direction of the light that the concave surface speculum reflects parallels to can make the image of the demonstration icon that the person of examining observes at the detection mouth clear, be favorable to guaranteeing the inspection effect.

In addition, through setting up the icon subassembly to including concave lens, convex lens, the icon that makes the display screen show forms images through convex lens, then make light parallel shine on the plane mirror through concave lens refraction, through parallel arrangement first straight line regulating assembly and second straight line regulating part, realize adjusting the distance between concave lens and convex lens and the display screen, thereby can control the size of forming images through convex lens, thereby realize adjusting the size that shows the icon, can be with the size grow gradually or diminish that shows the icon through this kind of mode of setting, thereby can play better detection effect.