CN204246108U - Eyesight detecting instrument - Google Patents
Eyesight detecting instrument Download PDFInfo
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- CN204246108U CN204246108U CN201420683801.8U CN201420683801U CN204246108U CN 204246108 U CN204246108 U CN 204246108U CN 201420683801 U CN201420683801 U CN 201420683801U CN 204246108 U CN204246108 U CN 204246108U
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- 230000004438 eyesight Effects 0.000 title claims abstract description 26
- 238000012360 testing method Methods 0.000 claims description 13
- 230000003287 optical effect Effects 0.000 claims description 7
- 230000000007 visual effect Effects 0.000 claims 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 description 11
- 238000009434 installation Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 1
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- 230000008092 positive effect Effects 0.000 description 1
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Abstract
本实用新型提供一种视力检测仪，包括筒体、凸透镜、字符板和字符板座，凸透镜设置于筒体一端容纳于筒体内，字符板垂直位于筒体的另一端，字符板与字符板座连接；字符板座带动字符板在垂直面上旋转或平行移动。本实用新型体积小，便于携带和使用，对环境使用没要求，便于精确测量，结构简单，易于制造、推广。
The utility model provides a vision detector, which comprises a cylinder body, a convex lens, a character board and a character board seat. The convex lens is arranged at one end of the cylinder body and accommodated in the cylinder body. Connection; the character board seat drives the character board to rotate or move parallelly on the vertical plane. The utility model is small in size, easy to carry and use, has no requirements for environmental use, is convenient for accurate measurement, has a simple structure, and is easy to manufacture and popularize.
Description
技术领域 technical field
本实用新型涉及一种视力检测装置，属于眼睛检查设备技术领域。 The utility model relates to a vision detection device, which belongs to the technical field of eye examination equipment.
背景技术 Background technique
视力，是身体健康的重要指标。为检测视力，现在采用视力表的方式。但视力表对场地要求较高，而且被测者无法个人完成检测，所以不利于大众日常视力检测。 Eyesight is an important indicator of physical health. For testing eyesight, adopt the mode of eye chart now. However, the eye chart has high requirements for the venue, and the testee cannot complete the test by himself, so it is not conducive to the daily vision test of the public.
实用新型内容 Utility model content
为解决检查视力对场地、光线和人员的限制，本实用新型的提供一种结构独特、使用便利的视力检测装置，以实现精确检测视力。 In order to solve the limitations of the inspection site, light and personnel, the utility model provides a vision detection device with unique structure and convenient use, so as to realize accurate detection of vision.
本实用新型通过下述技术方案实现：一种视力检测装置，包括筒体、凸透镜、字符板和字符板座，凸透镜设置于筒体一端容纳于筒体内，字符板垂直位于筒体的另一端，字符板与字符板座连接；字符板座带动字符板在垂直面上旋转或平行移动。 The utility model is realized through the following technical solutions: a vision detection device, comprising a cylinder body, a convex lens, a character plate and a character plate seat, the convex lens is arranged at one end of the cylinder body and accommodated in the cylinder body, and the character plate is vertically located at the other end of the cylinder body, The character board is connected with the character board seat; the character board seat drives the character board to rotate or move parallelly on the vertical plane.
进一步的，字符板座安装于可旋转的底座上，该底座套装在筒体内，并以凸透镜的光轴为轴进行旋转。 Further, the character board seat is installed on a rotatable base, which is set in the barrel and rotates around the optical axis of the convex lens.
进一步的，字符板上设置字符、图案或常规视力表，字符板为矩形、圆形或多边形。 Further, characters, patterns or conventional eye charts are set on the character board, and the character board is rectangular, circular or polygonal.
进一步的，当字符板上设置常规视力表时，字符板距凸透镜的距离按下列公式调节： Further, when a conventional eye chart is set on the character board, the distance between the character board and the convex lens is adjusted according to the following formula:
l=Lf/(f+L)l=Lf/(f+L)
其中，l——物距，即字符板距凸透镜的距离，L——像距，即字符板通过凸透镜所成虚像距凸透镜的距离，f——凸透镜的焦距。 Among them, l— object distance, that is, the distance between the character plate and the convex lens, L —image distance, that is, the distance between the virtual image formed by the character plate through the convex lens and the convex lens, f ——the focal length of the convex lens.
当L为5米时，被检测者通过该视力检测装置检测对应的结果与常规距标准视力表5米检测所得实际结果相同。确定凸透镜安装位置l时，像距L的范围在3米到无穷远，最佳距离为5米，通过字符板座带动字符板沿凸透镜的光轴在距凸透镜1倍焦距以内平行移动。另外，字符板座上设置与字符板对应的读数，以显示视力测试对应的结果，筒体的内壁设置刻度，以显示像距。 When L is 5 meters, the corresponding result of the subject's detection by the vision detection device is the same as the actual result obtained by conventional detection of 5 meters away from the standard eye chart. When determining the installation position l of the convex lens, the image distance L ranges from 3 meters to infinity, and the optimal distance is 5 meters. The character plate is driven by the character plate seat to move in parallel along the optical axis of the convex lens within 1 times the focal length of the convex lens. In addition, the readings corresponding to the character board are set on the character board seat to display the corresponding results of the vision test, and the inner wall of the cylinder is provided with scales to display the image distance.
进一步的，筒体包括内筒体和套接在内筒体外部的外筒体，便于安装面积大的字符板。 Further, the cylinder body includes an inner cylinder body and an outer cylinder body sleeved outside the inner cylinder body, which facilitates the installation of character plates with a large area.
进一步的，筒体内设置光源。 Further, a light source is arranged in the barrel.
当测试者使用时，通过旋转调节字符板座带动字符板移动以使像距为5米，测试者筒体内部通过凸透镜观察成像，测试时不断自己调整字符板座，使字符板上的字体调节至凸透镜的光轴处达到成像，能看清的字符对应的结果就是测试者的实际视力。另外，测试者也可以通过该检测仪进行对比检测，时常观察某个像距下某个字符或图像，以时常对自己的视力状况有所掌握。还有，当测试者是儿童时，为防止孩子提前记下视力表的值，家长可旋转底座，使字符朝向发生变化，调节好后让孩子观察结果，以便家长真实掌握孩子的视力情况。 When the tester is using it, the character board is moved by rotating and adjusting the character board seat so that the image distance is 5 meters. The tester observes the image through the convex lens inside the cylinder, and constantly adjusts the character board seat by himself during the test to adjust the font on the character board. The optical axis of the convex lens achieves imaging, and the result corresponding to the characters that can be seen clearly is the actual vision of the tester. In addition, the tester can also use the tester to conduct a comparative test, and often observe a certain character or image at a certain image distance, so as to always have a grasp of his own vision. Also, when the tester is a child, in order to prevent the child from writing down the value of the eye chart in advance, the parent can rotate the base to change the direction of the characters, and let the child observe the result after adjustment, so that the parent can truly grasp the child's vision.
本实用新型的积极效果是：体积小，便于携带和使用，对环境使用没要求，便于精确测量，结构简单，易于制造、推广。 The positive effects of the utility model are: small size, easy to carry and use, no requirements for environmental use, convenient for accurate measurement, simple structure, easy to manufacture and popularize.
附图说明 Description of drawings
图1是本实用新型的外部结构示意图； Fig. 1 is a schematic diagram of the external structure of the utility model;
图2是本实用新型的横剖结构示意图。 Fig. 2 is a cross-sectional schematic diagram of the utility model.
具体实施方式 Detailed ways
下面结合附图，对本实用新型做进一步描述。 Below in conjunction with accompanying drawing, the utility model is described further.
实施例1 Example 1
如图1和2，视力检测装置包括筒体2、凸透镜1、字符板3和字符板座4，凸透镜1设置于筒体2一端容纳于筒体2内，字符板3垂直位于筒体2的另一端，字符板3与字符板座4连接；字符板座4带动字符板3在垂直面上旋转或平行移动；字符板座4安装于可旋转的底座5上，该底座5套装在筒体2内，并以凸透镜1的光轴为轴进行旋转；字符板3上设置字符、图案或常规视力表，字符板3为矩形、圆形或多边形；筒体2包括内筒体和套接在内筒体外部的外筒体，便于安装面积大的字符板3；筒体2内设置光源。当字符板3上设置常规视力表时，字符板3距凸透镜1的距离按下列公式调节： As shown in Figures 1 and 2, the vision detection device includes a cylinder 2, a convex lens 1, a character plate 3 and a character plate seat 4, the convex lens 1 is arranged on one end of the cylinder 2 and is accommodated in the cylinder 2, and the character plate 3 is vertically positioned at the bottom of the cylinder 2 At the other end, the character board 3 is connected with the character board seat 4; the character board seat 4 drives the character board 3 to rotate or move in parallel on the vertical plane; the character board seat 4 is installed on the rotatable base 5, and the base 5 is set on the cylinder body 2, and rotate with the optical axis of the convex lens 1 as the axis; characters, patterns or conventional eye charts are set on the character board 3, and the character board 3 is rectangular, circular or polygonal; the cylinder 2 includes an inner cylinder and a socket The outer cylinder outside the inner cylinder is convenient for installing the character plate 3 with a large area; the cylinder 2 is provided with a light source. When a conventional eye chart is set on the character board 3, the distance between the character board 3 and the convex lens 1 is adjusted according to the following formula:
l=Lf/(f+L)= 78.74mm l=Lf/(f+L)= 78.74mm
公式中，l——物距，即字符板距凸透镜的距离，L——像距5米，即字符板通过凸透镜所成虚像距凸透镜的距离，f——凸透镜的焦距=80mm。 In the formula, l— object distance, that is, the distance between the character plate and the convex lens, L ——the image distance of 5 meters, that is, the distance between the virtual image formed by the character plate through the convex lens and the convex lens, f ——the focal length of the convex lens=80mm.
当L为5米时，被检测者通过该视力检测装置检测对应的结果与常规距标准视力表5米检测所得实际结果相同。确定凸透镜安装位置l时，像距L的范围在3米到无穷远，最佳距离为5米，通过字符板座带动字符板沿凸透镜的光轴在距凸透镜1倍焦距以内平行移动。另外，字符板座上设置与字符板对应的读数，以显示视力测试对应的结果，筒体的内壁设置刻度，以显示像距。 When L is 5 meters, the corresponding result of the subject's detection by the vision detection device is the same as the actual result obtained by conventional detection of 5 meters away from the standard eye chart. When determining the installation position l of the convex lens, the image distance L ranges from 3 meters to infinity, and the optimal distance is 5 meters. The character plate is driven by the character plate seat to move in parallel along the optical axis of the convex lens within 1 times the focal length of the convex lens. In addition, the readings corresponding to the character board are set on the character board seat to display the corresponding results of the vision test, and the inner wall of the cylinder is provided with scales to display the image distance.
当测试者使用时，通过旋转调节字符板座4带动字符板3移动以使像距为5米，测试者筒体2内部通过凸透镜1观察成像，测试时不断自己调整字符板座4，使字符板3上的字体调节至凸透镜1的光轴处达到成像，能看清的字符对应的结果就是测试者的实际视力。另外，测试者也可以通过该检测仪进行对比检测，时常观察某个像距下某个字符或图像，以时常对自己的视力状况有所掌握。还有，当测试者是儿童时，为防止孩子提前记下视力表的值，家长可旋转底座5，使字符朝向发生变化，调节好后让孩子观察结果，以便家长真实掌握孩子的视力情况。 When the tester is using it, the character board 3 is moved by rotating and adjusting the character board seat 4 so that the image distance is 5 meters. The characters on the plate 3 are adjusted to the optical axis of the convex lens 1 to achieve imaging, and the result corresponding to the characters that can be seen clearly is the actual vision of the tester. In addition, the tester can also use the tester to conduct a comparative test, and often observe a certain character or image at a certain image distance, so as to always have a grasp of his own vision. Also, when the tester is a child, in order to prevent the child from writing down the value of the eye chart in advance, the head of the family can rotate the base 5 to make the character orientation change, and let the child observe the result after adjusting, so that the head of the family can truly grasp the child's vision situation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420683801.8U CN204246108U (en) | 2014-11-15 | 2014-11-15 | Eyesight detecting instrument |
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| CN201420683801.8U CN204246108U (en) | 2014-11-15 | 2014-11-15 | Eyesight detecting instrument |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106137116A (en) * | 2016-08-26 | 2016-11-23 | 四川远瞻智汇科技有限公司 | A kind of vision testing method and device |
| CN109864698A (en) * | 2019-04-04 | 2019-06-11 | 河南师范大学 | A kind of Portable vision tester |
| CN112741592A (en) * | 2021-01-14 | 2021-05-04 | 沈阳视达微医疗科技有限公司 | Vision detection device and vision detection method |
| CN112741589A (en) * | 2021-01-14 | 2021-05-04 | 沈阳视达微医疗科技有限公司 | Optical device for vision detection, vision detection system and method |
-
2014
- 2014-11-15 CN CN201420683801.8U patent/CN204246108U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106137116A (en) * | 2016-08-26 | 2016-11-23 | 四川远瞻智汇科技有限公司 | A kind of vision testing method and device |
| CN109864698A (en) * | 2019-04-04 | 2019-06-11 | 河南师范大学 | A kind of Portable vision tester |
| CN109864698B (en) * | 2019-04-04 | 2021-06-08 | 河南师范大学 | A portable vision tester |
| CN112741592A (en) * | 2021-01-14 | 2021-05-04 | 沈阳视达微医疗科技有限公司 | Vision detection device and vision detection method |
| CN112741589A (en) * | 2021-01-14 | 2021-05-04 | 沈阳视达微医疗科技有限公司 | Optical device for vision detection, vision detection system and method |
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Granted publication date: 20150408 |
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