CN2172089Y

CN2172089Y - Multifunctional visual testing chart box

Info

Publication number: CN2172089Y
Application number: CN 93230714
Authority: CN
Inventors: 刘玉珉
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-04-17
Filing date: 1993-04-17
Publication date: 1994-07-20
Anticipated expiration: 2003-04-17

Abstract

The utility model discloses a multifunctional visual testing chart box, which mainly comprises a visual testing chart box body with a front window, a driving shaft which is driven by a motor, a driven shaft, a fluorescent lamp light source and a transparent endless belt which is printed with a standard visual testing chart, wherein, the driving shaft, the driven shaft, the fluorescent lamp light source and the transparent endless belt are arranged in the visual testing chart box body. The utility model has the advantages that the accuracy of the visual test can be increased by changing different visual testing charts and adjusting the height of visual targets. The utility model can be used for the visual tests of both children and adults.

Description

Multifunctional visual testing chart box

This utility model has been announced a kind of multi-functional vision tester that is used for examination of visual acuity.

At present, the visual acuity chart that existing examination of visual acuity is used generally is that an independent visual acuity chart or back are added with lighting lamphouse, but this individual visual acuity chart is adult's use or only limits the child to use, and its sign arrangement is fixed, sighting target quantity is few, be easy to memory, the accuracy that affects one's power of vision and check.And visual acuity chart is fixedly the time, generally with 1.0 delegation in the table and those who are investigated's eye is contour is as the criterion, mostly be to adopt average, so also make those who are investigated's health height, short difference, or when needing in the application table 1.0 delegation tops or each row of bottom to check, produce the difference of sighting distance and angle, the accuracy that also affects one's power of vision and check.

The purpose of this utility model is exactly for overcoming the problems referred to above in the examination of visual acuity, and design provides a kind of multiclass, many visual acuity charts of comprising, easily conversion, and the multi-functional eyesight testing table case of each row sighting target height of scalable.

This utility model is achieved in that on a front has in the casing of form of band glass, a driving shaft and driven shaft are housed respectively down, be with the vision watchband of an endless belt formula on the diaxon, can be printed on the connected head-to-tail successively visual acuity chart more than 1 or 1 on the vision watchband, and can be last, following diaxon and before, between the two-layer vision watchband in back 1-2 vertical setting of types of dress with a casing left side or (with) the daylight lamp that is fixedly connected of right edge lid to front lit, its driving shaft can be by Motor Drive, also can be that an end of driving shaft links to each other by manual rotation driving with casing handle outward.

The utility model has the advantages that, visual acuity chart can a plurality of kinds, form, and can be changeable, promptly,, make the examinee can not lean on recall tests also applicable to the child applicable to the adult, and can change each the row sighting target high and low position, make inspection more accurate, can be used for the general health inspection, also can be used for the examination of visual acuity in the Dark Room.

Accompanying drawing 1: this utility model master looks sketch map.

Accompanying drawing 2:A-A cross-sectional schematic.

Accompanying drawing 3:B-B cross-sectional schematic.

In the accompanying drawing: 1-visual acuity chart case, 2-annular zona pellucida is windowed 4-driven shaft, 5-fixing hole, 6-fluorescent tube, 7-driving shaft, 8-motor, 9-sidewall, 10-supporting plate, 11-switch for fluorescent lamp, 12-motor switch, the manual wheel shank of 13-before the 3-.

Describe concrete structure of the present utility model in detail below in conjunction with accompanying drawing.

This utility model is made up of window before being with 3 visual acuity chart case 1 and two fluorescent tubes 6 that are loaded on wherein, wherein, on the visual acuity chart case 1, rotating driven shaft 4 and driving shaft 7 are housed respectively down, two rotating shafts 4, be with an annular zona pellucida 2 that is printed on the visual acuity chart more than 1 width of cloth or 1 width of cloth on 7, drive 2 motions of transparent endless belt by driving shaft 7 and driven shaft 4, two fluorescent tubes 6 are contained on the supporting plate 10 that is connected with the openable sidewall 9 of a side (being the left side among the figure) of visual acuity chart case 1, and by switch 11 controls, it is motor control switch that driving shaft 7 rotates 12 by motor 8 controls; The opposite side of driving shaft 7 can also be equipped with manual wheel shank 13 and drive.The visual acuity chart of seal can be two width of cloth by the different standard logarithmic visual acuity chart of the sighting target direction of Miu Tianrong design and the width of cloth test chart for children by the compilation of Jia Yong source on the transparent endless belt 2; Before window and glass be housed on 3 it highly is 750mm, width is 200mm, just in time to show a width of cloth visual acuity chart; The upper rear portion of visual acuity chart case has fixing hole 5, is used for hanging fixing.

When using this utility model, open switch for fluorescent lamp 11 illuminations, required visual acuity chart one width of cloth that occurs in windowing before utilizing motor control switch 12 promptly to adjust, and conversion as required, or regulate the upper and lower mobile of visual acuity chart; Can also drive by manual wheel shank 13 and regulate visual acuity chart.

Claims

1, a kind of multi-functional eyesight testing table case, 3 visual acuity chart case 1 and two fluorescent tubes 6 that are loaded on are wherein formed by windowing before the band, it is characterized in that upper and lower rotating driven shaft 4 and the driving shaft 7 of being equipped with respectively in the visual acuity chart case 1, driving shaft 7 is driven by the motor 8 that links to each other, be with a transparent endless belt 2 on driven shaft 4 and the driving shaft 7 jointly, be printed on the above standard vision chart that joins successively end to end of 1 width of cloth or 1 width of cloth on it, two fluorescent tubes 6 are contained on the supporting plate 10 that is connected with the openable sidewall 9 of a side of visual acuity chart case 1.

2, multi-functional eyesight testing table case as claimed in claim 1 is characterized in that being printed on the described transparent endless belt 2 a different standard logarithmic visual acuity chart of two width of cloth sighting target directions and a width of cloth test chart for children.

3, multi-functional eyesight testing table case as claimed in claim 1 or 2 is characterized in that the opposite side of described driving shaft 7 is equipped with the manual wheel shank 13 that can drive driving shaft 7 rotations.

4, multi-functional eyesight testing table case as claimed in claim 1 or 2 is characterized in that windowing before described and dustproof glass is housed on 3, and the height of window is 750mm, and width is 200mm, just in time to show a width of cloth vision chart.

5, multi-functional eyesight testing table case as claimed in claim 1 or 2 is characterized in that there is fixing hole 5 middle and upper part, the back side of described visual acuity chart case 1.