Refractive topographic map measuring instrument
A technology of measuring instruments and topographic maps, which is applied in the field of medical equipment and can solve problems such as complex technical solutions
Active Publication Date: 2021-01-26
SHENZHEN SHENGDA TONGZE TECH CO LTD
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Problems solved by technology
[0003] However, it is difficult for the existing refraction topographer to measure the change of the diopter of the human eye under different pupil sizes. Detection, of course, there are also some refraction topographers that can detect human eyes with different pupil sizes, but the technical solutions are more complicated
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[0025] 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 part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0026] It should be noted that if there is a directional indication (such as up, down, left, right, front, back...) in the embodiment of the present invention, the directional indication is only used to explain the position in a certain posture (as shown in the accompanying drawing). If the specific posture changes, the directional indication will also change accordingly.
[0027] In addition, if there are descriptions involving "first", "second" and ...
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The invention provides a refractive topographic map measuring instrument. The refractive topographic map measuring instrument comprises an eyepiece, an annular reflector, a diaphragm module, a focusing module, an imaging module, an image receiver and an annular lighting module, wherein the eyepiece, the annular reflector, the diaphragm module, the focusing module, the imaging module and the imagereceiver are sequentially arranged from front to back; the annular reflector is arranged in a hollow annular shape, the mirror surface of the annular reflector is arranged in a manner of deflecting towards one side; the annular lighting module is used for emitting annular lighting light to the annular reflector; the annular reflector reflects the emitted light to the eyepiece; the emitted light enters an eyeball from the eyepiece; detection reflected light reflected by the eyeball is transmitted to the imaging module from the eyepiece, a central hole of the annular reflector, a diaphragm holeof the diaphragm module and the focusing module; the detection reflected light is transmitted to the image receiver after passing through the imaging module; and the diaphragm hole of the diaphragm module is arranged in a size-adjustable manner. Therefore, the refractive topographic map measuring instrument realizes measurement for the change of human eye diopter under different pupil sizes through a simple technical scheme.
Description
technical field [0001] The invention relates to the technical field of medical instruments, in particular to a refraction topography measuring instrument. Background technique [0002] The diopter of the central field of view of the human eye is one of the most important parameters for the evaluation of human vision. Most of the existing visual acuity measurement equipment is mainly based on the refraction measurement of the central field of view of the human eye. Studies have shown that the diopter of the peripheral field of view will affect the development trend of human vision. Therefore, there is a need for an instrument that can simultaneously measure the diopters of the peripheral and central visual fields. A map of the distribution of refraction in the peripheral and central fields of view is called a refraction topography, and an instrument that measures the distribution of refraction in the central and peripheral fields of view is called a refraction topographer. ...
Claims
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IPC IPC(8): A61B3/12A61B3/14A61B3/103
CPCA61B3/12A61B3/14A61B3/0008A61B3/0016A61B3/103A61B3/0075
Inventor 崔焱黄叶权冬雪川宫明晶
Owner SHENZHEN SHENGDA TONGZE TECH CO LTD