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Vision detection device and system

A vision detection and frame technology, which is used in eye testing equipment, medical science, diagnosis, etc.

Pending Publication Date: 2022-01-11
光宝联合(北京)科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a visual acuity detection device and system in order to overcome the problems of large deviations in measured results caused by light problems and non-changeable serial numbers in today's visual acuity charts.

Method used

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  • Vision detection device and system
  • Vision detection device and system

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Embodiment Construction

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0027] In describing the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", " The orientation or positional relationship indicated by "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, so as to Specific orientation configurations and operations, therefore, are not to be construed as limitations on the invention.

[0028] In this example

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Abstract

The invention belongs to the technical field of vision detection, particularly relates to a vision detection device and system, and provides the following scheme aiming at the problem of large deviation of a detected result caused by the light problem and non-changeable serial number of an existing visual chart: the vision detection device comprises an outer frame which is internally provided with a cavity and is integrally of a cuboid structure, an extension rod is fixed to the position, close to the bottom end, of the back face of the outer frame, a U-shaped support is fixed to the bottom end of the extension rod, a first supporting rod and a second supporting rod which are parallel to each other and vertically distributed are fixed to the left side and the right side of the inner wall of the bottom of the outer frame respectively, and rotating stations of the same size are arranged on the circumferential outer walls of the first supporting rod and the second supporting rod respectively. According to the device, the icons at all positions can be replaced in time by rotating the conveying belt, the directions of the icons at all positions can be changed through in-situ rotation, and cheating behaviors caused by long-time use are effectively avoided by replacing the overall positions and the opening directions of the icons in a combined mode.

Description

technical field [0001] The invention relates to the technical field of vision detection, in particular to a vision detection device and system. Background technique [0002] At present, the commonly used vision charts in my country mainly include international standard vision charts for distance use, standard logarithmic vision charts, and Lando circular vision charts. There are 12 rows in total, and the value of the visual target corresponding to the visual target is recorded in Arabic numerals 0.1 to 1.5. The standard logarithmic vision chart is also called the 5-point logarithmic vision chart. A circular letter similar to "C" (that is, Lando's circular optotype), with a total of 14 lines, and those who can recognize the 11th line is the standard visual acuity, which is recorded as 5.0. [0003] A vision detection device disclosed in Chinese Utility Model Patent Application Publication CN207012174U, although the vision detection device is small in size, it is convenient to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B3/032
CPCA61B3/032A61B3/0016
Inventor 付桂君
Owner 光宝联合(北京)科技股份有限公司
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