CN201414787Y - Visual testing chart light box for preventing visual testing chart from being memorized - Google Patents
Visual testing chart light box for preventing visual testing chart from being memorized Download PDFInfo
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- CN201414787Y CN201414787Y CN2009201003514U CN200920100351U CN201414787Y CN 201414787 Y CN201414787 Y CN 201414787Y CN 2009201003514 U CN2009201003514 U CN 2009201003514U CN 200920100351 U CN200920100351 U CN 200920100351U CN 201414787 Y CN201414787 Y CN 201414787Y
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- lamp box
- visual acuity
- acuity chart
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Abstract
The utility model discloses a visual testing chart light box for preventing a visual testing chart from being memorized, which relates to the technical field of visual test and sight protection and aims to solve the problems that the form of the prior visual testing chart is onefold and fails to meet the requirements of different people to be tested. The utility model adopts the technical scheme that visual testing charts with different types as well as the same type of visual testing charts with different sighting mark arrangements are collected into one visual testing chart light box, a needed visual testing chart can be selected through an infrared remote controller or a keystroke, a singlechip is used for receiving control commands sent out by the infrared remote controller; meanwhile,after the position information of a visual testing chart passed back by a sensor is judged, a driving AC machine drives the visual testing chart to move until the positioned information passed back by the sensor matches up to the information displayed by a nixie tube, and then the AC machine is controlled to stop working. Placement of variety of visual testing charts at the same place is achieved, a person to be detected can be prevented from memorizing the visual testing chart, and the requirements from different person to be tested can be meet.
Description
Technical field
This utility model relates to eye eyesight test and vision care technical field, is specifically related to a kind of anti-visual acuity chart lamp box of reciting.
Background technology
At present, multiplely be used for visual acuity chart that vision detects simultaneously and deposit, there is evident difference in its testing result.These visual acuity charts comprise international standard visual acuity chart, standard logarithmic visual acuity chart, ETDRS logarithmic visual acuity chart, Lan Shi Landolt, child's figure visual acuity chart, haplopia mark test chart, spatial frequency (grating). visual acuity charts etc., different medical unit often selects wherein a certain visual acuity chart for use.In fact, adopt more than one visual acuity chart to give a test of one's eyesight to same detected object, be difficult to accomplish in the record testing result, indicate used visual acuity chart type, mainly be that same place is difficult to place simultaneously polytype visual acuity chart, equally, in order to prevent that the detected person from reciting sighting target, when adopting the same type visual acuity chart of several different directions sighting targets, also there is the insufficient problem of placement space.The rotating standard visual acuity chart of patent No. ZL 200620172140.8, some visual acuity charts can back and forth substitute, but since visual acuity chart ringwise in rotating shaft, the visual acuity chart length negligible amounts that can substitute.
The utility model content
The purpose of this utility model is single in order to solve existing various visual acuity chart lamp box visual acuity chart form, sighting target easy detected person recite, and can not satisfy the problem of different tester's demands, and then provide a kind of anti-visual acuity chart lamp box of reciting, the visual acuity chart of the different orientations of the visual acuity chart of number of different types and same type sighting target back and forth substitutes, both prevented that the detected person from reciting sighting target, and can satisfy different testers' demand again.
This utility model is achieved through the following technical solutions: this utility model comprises lamp box, transparent window, fluorescent tube, the fluorescent tube fixture, electric ballast, visual acuity chart lamp box sheet, visual acuity chart lamp box plate clamp and lamp box bonnet, this utility model also comprises drive system and single-chip computer control system, single-chip computer control system is by the infrared control reception head that shakes, charactron as the input demonstration, power switch key, the single-chip microcomputer reset key, next width of cloth of visual acuity chart control key, a width of cloth on the visual acuity chart control key, microcontroller power supply, circuit board, metal patch and electromagnetic induction type are formed near switch, the front of lamp box is provided with the transparent window of standard vision table size, the lamp box of transparent window bottom is provided with the infrared control reception head that shakes that is connected with circuit board, charactron as the input demonstration, power switch key, the single-chip microcomputer reset key, a width of cloth on next width of cloth of visual acuity chart control key and the visual acuity chart control key, be printed with the one side of sighting target towards transparent window on the visual acuity chart lamp box sheet, microcontroller power supply, circuit board and electric ballast all are arranged in the lamp box, the fluorescent tube fixture is fixed in the lamp box, fluorescent tube is fixed on the fluorescent tube fixture, visual acuity chart lamp box sheet is connected with drive system, both sides of the edge, the visual acuity chart lamp box sheet back side are fixed with metal patch, visual acuity chart lamp box plate clamp is fixed on the lamp box, be equipped with on the visual acuity chart lamp box plate clamp with the corresponding electromagnetic induction type in metal patch position near switch, electromagnetic induction type links to each other with the circuit board electricity near switch, and the lamp box bonnet is arranged on the rear side of lamp box.Circuit board is made up of AT89S51 single-chip microcomputer, chip 74HC595, ferroelectric memory, buzzer, P51 type photoelectrical coupler, relay, bidirectional triode thyristor, wherein, the AT89S51 single-chip microcomputer is as the main control chip, 74HC595 latchs chip as the driving of charactron, ferroelectric memory is used for writing down the instantaneous state of single-chip microcomputer, and can power down preserve, in order to avoid because fortuitous event makes the position judgment occurrence logic confusion of visual acuity chart lamp box sheet.Electromagnetic induction type is near switch be used for the giving a test of one's eyesight metal patch at the table lamp box panel back side.P51 type photoelectrical coupler is formed shielding system with relay, isolates the interference that the alternating current large-power device causes Single Chip Microcomputer (SCM) system, and bidirectional triode thyristor is used for drive motors running part and fluorescent tube.
Operation principle of the present utility model is: when by panel control key or IR remote controller after single-chip microcomputer sends the input instruction, single-chip microcomputer can according to send instructions and make control corresponding, this moment, single-chip microcomputer can be to charactron output input instruction, and judge the visual acuity chart lamp box sheet positional information that electromagnetic induction is passed back near switch, single-chip microcomputer will drive alternating current generator and drag visual acuity chart lamp box sheet and move up or down, the visual acuity chart lamp box sheet positional information of passing back up to pick off conforms to the information that charactron shows, controls alternating current generator again and quits work.All data in this process all will be sent ferroelectric memory in time, when preventing unexpected the generation, restart the confusion that data are caused by the single-chip microcomputer zero clearing behind the machine.
The beneficial effects of the utility model: this utility model concentrates on the visual acuity chart of the visual acuity chart of number of different types and the different orientations of the same type sighting target mode with spool in the visual acuity chart lamp box, and by infrared remote control or the required visual acuity chart of button selection, realized that same place places polytype visual acuity chart simultaneously, both prevented that the detected person from reciting sighting target, can satisfy different testers' demand again.
Description of drawings
Fig. 1 is the anti-visual acuity chart lamp box front elevation of reciting,
Fig. 2 is the structural representation of the specific embodiment two,
Fig. 3 is the structural representation of the specific embodiment three,
Fig. 4 is the structural representation of the specific embodiment four,
Fig. 5 is the structural representation of the specific embodiment five,
Fig. 6 is one group of standard logarithmic visual acuity chart,
Fig. 7 is one group of child's figure visual acuity chart,
Fig. 8 is one group of Lan Shi Landolt.
The specific embodiment
The specific embodiment one: with reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5 describe, present embodiment comprises lamp box 1, transparent window 2, fluorescent tube 23, fluorescent tube fixture 11, electric ballast 15, visual acuity chart lamp box sheet 3, visual acuity chart lamp box plate clamp 22 and lamp box bonnet 40, present embodiment also comprises drive system and single-chip computer control system, single-chip computer control system is shaken control and is received 4 by infrared, charactron 5 as the input demonstration, power switch key 6, single-chip microcomputer reset key 7, the visual acuity chart control key next 8, on the visual acuity chart control key one 9, microcontroller power supply 13, circuit board 14, metal patch 20 and electromagnetic induction type are formed near switch 21, the front of lamp box 1 is provided with the transparent window 2 of standard vision table size, the lamp box 1 of transparent window 2 bottoms is provided be connected with circuit board 14 infrared and shakes control and receive 4, charactron 5 as the input demonstration, power switch key 6, single-chip microcomputer reset key 7, the visual acuity chart control key next 8 and the visual acuity chart control key on one 9, the one side that is printed with sighting target on the visual acuity chart lamp box sheet 3 is towards transparent window 2, microcontroller power supply 13, circuit board 14 and electric ballast 15 all are arranged in the lamp box 1, fluorescent tube fixture 11 is fixed in the lamp box 1, fluorescent tube 23 is fixed on the fluorescent tube fixture 11, visual acuity chart lamp box sheet 3 is connected with drive system, both sides of the edge, visual acuity chart lamp box sheet 3 back side are fixed with metal patch 20, visual acuity chart lamp box plate clamp 22 is fixed on the lamp box 1, be equipped with on the visual acuity chart lamp box plate clamp 22 with the corresponding electromagnetic induction type in metal patch 20 positions near switch 21, electromagnetic induction type links to each other with circuit board 14 electricity near switch 21, and lamp box bonnet 40 is arranged on the rear side of lamp box 1.Circuit board 14 is made up of AT89S51 single-chip microcomputer, chip 74HC595, ferroelectric memory, buzzer, P51 type photoelectrical coupler, relay, bidirectional triode thyristor.Wherein, the AT89S51 single-chip microcomputer is as the main control chip, and 74HC595 latchs chip as the driving of charactron, and ferroelectric memory is used for writing down the instantaneous state of single-chip microcomputer, and can power down preserve, in order to avoid because fortuitous event makes the position judgment occurrence logic confusion of visual acuity chart lamp box sheet 3.Electromagnetic induction type is near switch 21 be used for the giving a test of one's eyesight metal patch 20 at table lamp box panel 3 back sides.P51 type photoelectrical coupler is formed shielding system with relay, isolates the interference that the alternating current large-power device causes Single Chip Microcomputer (SCM) system, and bidirectional triode thyristor is used for drive motors running part and fluorescent tube 23.
The specific embodiment two: describe with reference to Fig. 2, the drive system of present embodiment is a Belt Driven by Double Motor, by last turning cylinder 10, following turning cylinder 12, first alternating current generator 16, first drivewheel 17, first driving-belt 18, first driven pulley 19, second alternating current generator 36, second drivewheel 37, second driving-belt 38 and second driven pulley 39 are formed, first alternating current generator 16 links to each other with circuit board 14 electricity respectively with second alternating current generator 36, following turning cylinder 12 and last turning cylinder 10 are set in parallel in upside and the downside in the lamp box 1, one end of visual acuity chart lamp box sheet 3 is wrapped on the turning cylinder 10, the other end of visual acuity chart lamp box sheet 3 is wrapped in down on the turning cylinder 12, first drivewheel 17 is fixed on the output shaft of first alternating current generator 16, first driven pulley 19 under first drivewheel 17 drives by first driving-belt 18 on the turning cylinder 12 rotates, second drivewheel 37 is fixed on the output shaft of second alternating current generator 36, second drivewheel 37 drives second driven pulley, 39 transmissions of going up on the turning cylinder 10 by second driving-belt 38, and then drives visual acuity chart lamp box sheet 3 operation up or down.The effect of the inertia when Belt Driven by Double Motor can play and reduce motor and stop to make accurate positioning, and the visual acuity chart lamp box sheet 3 that prevents to be wrapped on the turning cylinder takes place loosening in running.
The specific embodiment three: describe with reference to Fig. 3, drive system in the present embodiment is single motor transmission, by last turning cylinder 10, following turning cylinder 12, first alternating current generator 16, first drivewheel 17, first driving-belt 18, first driven pulley 19, vertical driving-belt 24, inferior driven pulley 25 and lower shaft drive 26 are formed, one end of visual acuity chart lamp box sheet 3 is wrapped on the turning cylinder 10, the other end of visual acuity chart lamp box sheet 3 is wrapped in down on the turning cylinder 12, first alternating current generator 16 links to each other with circuit board 14 electricity, first drivewheel 17 is fixed on the output shaft of first alternating current generator 16, first driven pulley 19 under first drivewheel 17 drives by first driving-belt 18 on the turning cylinder 12 rotates turning cylinder 12, lower shaft drive 26 on the following turning cylinder 12 drives the inferior driven pulley of going up on the turning cylinder 10 25 by vertical driving-belt 24 rotates turning cylinder 10, and then drives visual acuity chart lamp box sheet 3 operation up or down.
The specific embodiment four: describe with reference to Fig. 4, drive system in the present embodiment is a Belt Driven by Double Motor, by first alternating current generator 16, first drivewheel 17, first driving-belt 18, first driven pulley 19, second alternating current generator 36, second drivewheel 37, second driving-belt 38, second driven pulley 39, left-hand rotation moving axis 41 and right-hand rotation moving axis 42 are formed, first alternating current generator 16 all is arranged on lamp box 1 interior downside with second alternating current generator 36 and also links to each other with circuit board 14 electricity respectively, left-hand rotation moving axis 41 and all vertical setting of right-hand rotation moving axis 42, one end of visual acuity chart lamp box sheet 3 is wrapped on the left-hand rotation moving axis 41, the other end of visual acuity chart lamp box sheet 3 is wrapped on the right-hand rotation moving axis 42, first drivewheel 17 is fixed on the output shaft of first alternating current generator 16, be in transmission connection by first driving-belt 18 between first driven pulley 19 on first drivewheel 17 and the left-hand rotation moving axis 41, second drivewheel 37 is fixed on the output shaft of second alternating current generator 36, be in transmission connection by second driving-belt 38 between second driven pulley 39 on second drivewheel 37 and the right-hand rotation moving axis 42, and then drive visual acuity chart lamp box sheet 3 operation to the left or to the right.
The specific embodiment five: describe with reference to Fig. 5, drive system is single motor transmission in the present embodiment, by first alternating current generator 16, first drivewheel 17, first driving-belt 18, first driven pulley 19, left-hand rotation moving axis 41, right-hand rotation moving axis 42, inferior driven pulley 43 and horizontal conveyor belt 44 are formed, first alternating current generator 16 is fixed on the lower-left side in the lamp box 1, first alternating current generator 16 links to each other with circuit board 14 electricity, left-hand rotation moving axis 41 and right-hand rotation moving axis 42 are vertically set on the left and right sides in the lamp box 1, one end of visual acuity chart lamp box sheet 3 is wrapped on the left-hand rotation moving axis 41, the other end of visual acuity chart lamp box sheet 3 is wrapped on the right-hand rotation moving axis 42, first drivewheel 17 is fixed on the output shaft of first alternating current generator 16, be provided with first driving-belt 18 between the following race of first driven pulley 19 on first drivewheel 17 and the left-hand rotation moving axis 41, be provided with horizontal conveyor belt 44 between the last race of first driven pulley 19 and the inferior driven pulley 43 on the right-hand rotation moving axis 42, and then drive visual acuity chart lamp box sheet 3 operation to the left or to the right.
The specific embodiment six: describe with reference to Fig. 6, be foundation with the standard logarithmic visual acuity chart in the present embodiment, each width of cloth standard logarithmic visual acuity chart sighting target invariant position, but the sighting target opening direction is respectively upper and lower, left and right, thus reach the purpose that prevents to recite sighting target.
The specific embodiment seven: describe with reference to Fig. 7, be foundation with child's figure visual acuity chart in the present embodiment, each width of cloth child figure visual acuity chart sighting target invariant position, but the sighting target graphic change makes the child not only prevent to recite sighting target but also increase enjoyment for it in the vision testing process.
The specific embodiment eight: describe with reference to Fig. 8, be foundation with the Lan Shi Landolt in the present embodiment, each width of cloth Lan Shi Landolt sighting target invariant position, but the angle of sighting target opening direction and horizontal linear is respectively 0 °, 45 °, 90 °, 135 °, 180 °, 225 °, 270 °, 315 °, thereby reaches the purpose that prevents to recite sighting target.
Claims (5)
1, a kind of anti-visual acuity chart lamp box of reciting, it comprises lamp box (1), transparent window (2), fluorescent tube (23), fluorescent tube fixture (11), electric ballast (15), visual acuity chart lamp box sheet (3), visual acuity chart lamp box plate clamp (22) and lamp box bonnet (40), it is characterized in that: it also comprises drive system and single-chip computer control system, single-chip computer control system is by the infrared control reception head (4) that shakes, charactron (5) as the input demonstration, power switch key (6), single-chip microcomputer reset key (7), next width of cloth of visual acuity chart control key (8), a width of cloth (9) on the visual acuity chart control key, microcontroller power supply (13), circuit board (14), metal patch (20) and electromagnetic induction type are formed near switch (21), the front of lamp box (1) is provided with the transparent window (2) of standard vision table size, the lamp box (1) of transparent window (2) bottom is provided with the infrared control reception head (4) that shakes that is connected with circuit board (14), charactron (5) as the input demonstration, power switch key (6), single-chip microcomputer reset key (7), a width of cloth (9) on next width of cloth of visual acuity chart control key (8) and the visual acuity chart control key, the one side that is printed with sighting target on the visual acuity chart lamp box sheet (3) is towards transparent window (2), microcontroller power supply (13), circuit board (14) and electric ballast (15) all are arranged in the lamp box (1), fluorescent tube fixture (11) is fixed in the lamp box (1), fluorescent tube (23) is fixed on the fluorescent tube fixture (11), visual acuity chart lamp box sheet (3) is connected with drive system, visual acuity chart lamp box sheet (3) both sides of the edge, the back side are fixed with metal patch (20), visual acuity chart lamp box plate clamp (22) is fixed on the lamp box (1), be equipped with on the visual acuity chart lamp box plate clamp (22) with the corresponding electromagnetic induction type in metal patch (20) position near switch (21), electromagnetic induction type links to each other with circuit board (14) electricity near switch (21), and lamp box bonnet (40) is arranged on the rear side of lamp box (1).
2, a kind of anti-visual acuity chart lamp box of reciting according to claim 1, it is characterized in that: drive system is a Belt Driven by Double Motor, by last turning cylinder (10), following turning cylinder (12), first alternating current generator (16), first drivewheel (17), first driving-belt (18), first driven pulley (19), second alternating current generator (36), second drivewheel (37), second driving-belt (38) and second driven pulley (39) are formed, first alternating current generator (16) links to each other with circuit board (14) electricity respectively with second alternating current generator (36), following turning cylinder (12) is set in parallel in lamp box (1) interior upside and downside with last turning cylinder (10), one end of visual acuity chart lamp box sheet (3) is wrapped on the turning cylinder (10), the other end of visual acuity chart lamp box sheet (3) is wrapped in down on the turning cylinder (12), first drivewheel (17) is fixed on the output shaft of first alternating current generator (16), first driven pulley (19) under first drivewheel (17) drives by first driving-belt (18) on the turning cylinder (12) rotates, second drivewheel (37) is fixed on the output shaft of second alternating current generator (36), second drivewheel (37) is by second driven pulley (39) transmission on the turning cylinder (10) in second driving-belt (38) drive, and then drive visual acuity chart lamp box sheet (3) moves up or down.
3, a kind of anti-visual acuity chart lamp box of reciting according to claim 1, it is characterized in that: drive system is single motor transmission, by last turning cylinder (10), following turning cylinder (12), first alternating current generator (16), first drivewheel (17), first driving-belt (18), first driven pulley (19), vertical driving-belt (24), inferior driven pulley (25) and lower shaft drive (26) are formed, one end of visual acuity chart lamp box sheet (3) is wrapped on the turning cylinder (10), the other end of visual acuity chart lamp box sheet (3) is wrapped in down on the turning cylinder (12), first alternating current generator (16) links to each other with circuit board (14) electricity, first drivewheel (17) is fixed on the output shaft of first alternating current generator (16), first driven pulley (19) under first drivewheel (17) drives by first driving-belt (18) on the turning cylinder (12) rotates turning cylinder (12), lower shaft drive (26) on the following turning cylinder (12) rotates turning cylinder (10) by the inferior driven pulley (25) on the turning cylinder (10) in vertical driving-belt (24) drive, and then drive visual acuity chart lamp box sheet (3) moves up or down.
4, a kind of anti-visual acuity chart lamp box of reciting according to claim 1, it is characterized in that: drive system is a Belt Driven by Double Motor, by first alternating current generator (16), first drivewheel (17), first driving-belt (18), first driven pulley (19), second alternating current generator (36), second drivewheel (37), second driving-belt (38), second driven pulley (39), left-hand rotation moving axis (41) and right-hand rotation moving axis (42) are formed, first alternating current generator (16) all is arranged on the interior downside of lamp box (1) with second alternating current generator (36) and links to each other with circuit board (14) electricity respectively, left-hand rotation moving axis (41) and all vertical setting of right-hand rotation moving axis (42), one end of visual acuity chart lamp box sheet (3) is wrapped on the left-hand rotation moving axis (41), the other end of visual acuity chart lamp box sheet (3) is wrapped on the right-hand rotation moving axis (42), first drivewheel (17) is fixed on the output shaft of first alternating current generator (16), be in transmission connection by first driving-belt (18) between first driven pulley (19) on first drivewheel (17) and the left-hand rotation moving axis (41), second drivewheel (37) is fixed on the output shaft of second alternating current generator (36), be in transmission connection by second driving-belt (38) between second driven pulley (39) on second drivewheel (37) and the right-hand rotation moving axis (42), and then drive visual acuity chart lamp box sheet (3) moves to the left or to the right.
5, a kind of anti-visual acuity chart lamp box of reciting according to claim 1, it is characterized in that: drive system is single motor transmission, by first alternating current generator (16), first drivewheel (17), first driving-belt (18), first driven pulley (19), left-hand rotation moving axis (41), right-hand rotation moving axis (42), inferior driven pulley (43) and horizontal conveyor belt (44) are formed, first alternating current generator (16) is fixed on the lower-left side in the lamp box (1), first alternating current generator (16) links to each other with circuit board (14) electricity, left-hand rotation moving axis (41) is vertically set on the interior left and right sides of lamp box (1) with right-hand rotation moving axis (42), one end of visual acuity chart lamp box sheet (3) is wrapped on the left-hand rotation moving axis (41), the other end of visual acuity chart lamp box sheet (3) is wrapped on the right-hand rotation moving axis (42), first drivewheel (17) is fixed on the output shaft of first alternating current generator (16), be provided with first driving-belt (18) between the following race of first driven pulley (19) on first drivewheel (17) and the left-hand rotation moving axis (41), be provided with horizontal conveyor belt (44) between the inferior driven pulley (43) on the last race of first driven pulley (19) and the right-hand rotation moving axis (42), and then drive visual acuity chart lamp box sheet (3) moves to the left or to the right.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201003514U CN201414787Y (en) | 2009-07-13 | 2009-07-13 | Visual testing chart light box for preventing visual testing chart from being memorized |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201003514U CN201414787Y (en) | 2009-07-13 | 2009-07-13 | Visual testing chart light box for preventing visual testing chart from being memorized |
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| Publication Number | Publication Date |
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| CN201414787Y true CN201414787Y (en) | 2010-03-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009201003514U Expired - Fee Related CN201414787Y (en) | 2009-07-13 | 2009-07-13 | Visual testing chart light box for preventing visual testing chart from being memorized |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102772290A (en) * | 2012-08-27 | 2012-11-14 | 冯保平 | Remotely-controlled visual chart (capable of treating amblyopia and low myopia) with box |
| CN106859587A (en) * | 2017-03-08 | 2017-06-20 | 苏州科技大学 | A kind of spool multiaspect visual chart |
| CN107468205A (en) * | 2017-09-11 | 2017-12-15 | 刘寒冰 | The multi-functional automatic detection eyesight case that a kind of ophthalmology section office use |
| CN109480758A (en) * | 2018-12-27 | 2019-03-19 | 秦洪珍 | The movable visual chart of ophthalmology |
| CN109770843A (en) * | 2018-12-11 | 2019-05-21 | 武汉科技大学 | Vision monitoring device |
| CN110123260A (en) * | 2019-06-03 | 2019-08-16 | 袁晶晶 | One kind being used for ophthalmology eyesight detection device |
| CN110652282A (en) * | 2018-06-28 | 2020-01-07 | 齐备 | Resolution grade visual chart |
| CN113017553A (en) * | 2021-02-26 | 2021-06-25 | 北京大学第三医院（北京大学第三临床医学院） | Multifunctional vision examination box |
-
2009
- 2009-07-13 CN CN2009201003514U patent/CN201414787Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102772290A (en) * | 2012-08-27 | 2012-11-14 | 冯保平 | Remotely-controlled visual chart (capable of treating amblyopia and low myopia) with box |
| CN106859587A (en) * | 2017-03-08 | 2017-06-20 | 苏州科技大学 | A kind of spool multiaspect visual chart |
| CN107468205A (en) * | 2017-09-11 | 2017-12-15 | 刘寒冰 | The multi-functional automatic detection eyesight case that a kind of ophthalmology section office use |
| CN110652282A (en) * | 2018-06-28 | 2020-01-07 | 齐备 | Resolution grade visual chart |
| CN109770843A (en) * | 2018-12-11 | 2019-05-21 | 武汉科技大学 | Vision monitoring device |
| CN109480758A (en) * | 2018-12-27 | 2019-03-19 | 秦洪珍 | The movable visual chart of ophthalmology |
| CN109480758B (en) * | 2018-12-27 | 2021-08-10 | 秦洪珍 | Movable visual acuity chart for ophthalmology |
| CN110123260A (en) * | 2019-06-03 | 2019-08-16 | 袁晶晶 | One kind being used for ophthalmology eyesight detection device |
| CN113017553A (en) * | 2021-02-26 | 2021-06-25 | 北京大学第三医院（北京大学第三临床医学院） | Multifunctional vision examination box |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100303 Termination date: 20120713 |