Medical LED (light emitting diode) vision test instrument

A tester and LED light source technology, which is applied in the fields of eye testing equipment, applications, medical science, etc., can solve the problem that the brightness uniformity of vision chart recognition is not very high, and achieves diverse testing functions, uniform and constant brightness, and remote operation. Portable and simple Effect

Inactive Publication Date: 2012-12-05
浙江铭洋照明科技有限公司
View PDF6 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The lighting in the market now mainly uses ordinary fluorescent tubes or CCFL as the

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Medical LED (light emitting diode) vision test instrument
  • Medical LED (light emitting diode) vision test instrument
  • Medical LED (light emitting diode) vision test instrument

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] refer to Figures 1 to 4 As shown, the LED medical vision tester includes an optotype board 03 , a light source, a main body casing and an additional protective cover 01 . Among them, the plastic casing 04 and the bottom plate 08 form the main body closed casing of the tester, which mainly provides protection and support for the vision tester; the LED light source 15 produces uniform and high-quality light, which spreads on the substrate PCB 07, and the PCB 07 mainly Power supply for the LED; 06 is the light isolation plate, the outer surface is sprayed with light diffuse reflection material, the target board 03, the visual mark symbol for measuring vision is printed on this board; the target board spacer 02, the surface is light-absorbing material; add a protective cover 01 is a transparent acrylic plate; the button switch 15 is a control switch of the visual target, which can control the opening and closing of each module of the tester; the receiving head 09 is an inf...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a vision test chart, a vision chart back lighting technology, a vision chart control system and an LED (light emitting diode) solid state lighting energy saving technology, in particular to a medical LED (light emitting diode) vision test instrument. The medical LED vision test instrument has the technical scheme that the medical LED vision test instrument comprises a sighting target plate, light sources, a main body machine case and an auxiliary protecting cover, wherein a plastic cement case is adopted as the main body machine case, the plastic cement case and a bottom plate form a main body sealed case of the test instrument, the main body sealed case mainly provides the protection and support effects for the vision test instrument, the light sources are a plurality of LED light sources which are uniformly distributed in the main body machine case and are arranged on a base plate, and the protecting cover is made of transparent acrylic materials. The medical LED vision test instrument has the beneficial effects that on the basis that the test functions are various, and the surface brightness of the sighting target plate is uniform and constant, the effects of remote operation, portability, simplicity, energy saving and the like are further realized, so better use prospects are realized.

Description

technical field [0001] The invention relates to a vision test chart, a vision chart backlighting technology, a vision chart control system and an LED solid-state lighting energy-saving technology, in particular to an LED medical vision tester. Background technique [0002] Existing eye charts usually have a common paper structure. Since the visual acuity of the human eye is also related to the brightness and contrast of the recognized object, it is necessary to cooperate with external auxiliary light to ensure a relatively uniform recognition brightness on the visual acuity chart. The lighting on the market now mainly uses ordinary fluorescent tubes or CCFLs as the backlight, so the brightness uniformity of the vision chart is not very high. [0003] Now the common vision chart is mainly used to detect myopia and hyperopia, but with the development of society, people also put forward higher requirements for vision detection, including color blindness, color weakness, astigm...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): A61B3/032
Inventor 李卫阳刘炜
Owner 浙江铭洋照明科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap