CN203931292U - A kind of Medical physics experiments device of measuring the human eye visual field and flicker fusion frequency - Google Patents
A kind of Medical physics experiments device of measuring the human eye visual field and flicker fusion frequency Download PDFInfo
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- CN203931292U CN203931292U CN201420286568.XU CN201420286568U CN203931292U CN 203931292 U CN203931292 U CN 203931292U CN 201420286568 U CN201420286568 U CN 201420286568U CN 203931292 U CN203931292 U CN 203931292U
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Abstract
The utility model belongs to teaching and experiment equipment technical field, is specially a kind of Medical physics experiments device of measuring the human eye visual field and flicker fusion frequency.The utility model experimental provision comprises main control system, inspection box support moving device, rotation angle sensor, inspection box Plane Angle indicating device, flash of light or bright spot pilot lamp, inspection box, support baseboard 7 and observer's chin strap; Main control system connection of rotating angular transducer and flash of light or bright spot pilot lamp, main control system shows the frequency of flashlamp, and determines shinny light color, shows in addition the angle that inspection box rotates in perpendicular.The utility model is combined in human eye perimetry and flicker fusion frequency measurement in an experimental provision, and conversion is convenient, measure accurately, its experiment is abundant in content, easy to operate, reproducible, environmental requirement is low to external world, can be for institution of higher learning's Medical physics experiments and Experiment of Psychology.
Description
Technical field
The utility model belongs to teaching and experiment equipment technical field, is specifically related to a kind of Medical physics experiments device that is used for measuring the human eye visual field and flicker fusion frequency.
Background technology
The visual field refers to when people's head and eyeball are when motionless, the spatial dimension that human eye can be observed.
A lower flash stimulation of frequency can produce flickering sensation, is called the flicker of light.Along with light frequency constantly increases, flicker perception will fade away, finally become a stable light, this is called the fusion of light, feel light fusion time the low-limit frequency of glistening and the highest frequency that glistens while feeling optical flare average be called flicker fusion critical frequency, flicker fusion frequency measurement is to determine the level of distinguishing flash of light ability, the i.e. visual acuity of vision time; Visual acuity is a kind of basic function of eyes, can be used as a kind of index of visual fatigue and mental fatigue.The people of different conditions, the differing greatly of flicker fusion frequency.Flicker fusion frequency is higher, represents that brain mind level is also higher.During human-body fatigue, flicker fusion frequency reduces.Therefore, the flicker fusion frequency of measuring people is a kind of common method of measuring human-body fatigue, and generally the rate of change in the daytime and between week of conventional flicker fusion frequency is as fatigue index.
The visual field and flicker fusion frequency measurement are the important contents of medical physics and Experiment of Psychology, and coordinate the instrument of this measurement generally all to have the shortcomings such as simple in structure, content is single, adjusting is inconvenient.
Summary of the invention
The purpose of this utility model is to provide a kind of easy to operate measurement human eye visual field and the experimental provision of flicker fusion frequency, can be used in Medical physics experiments and Experiment of Psychology.
The Medical physics experiments device of the measurement human eye visual field provided by the utility model and flicker fusion frequency, comprise main control system 1, inspection box support moving device 2, rotation angle sensor 3, inspection box Plane Angle indicating device 4, flash of light or bright spot pilot lamp 5, inspection box 6, support baseboard 7 and observer's chin strap 8, wherein:
Described main control system 1 connection of rotating angular transducer 3 and flash of light or bright spot pilot lamp 5, main control system 1 can show the frequency of flashlamp, and determines shinny light color, can directly show the angle that inspection box rotates in perpendicular in addition; Rotation angle sensor 3 is arranged between inspection box 6 and inspection box support moving device 2, rotates inspection box 6 in vertical plane, and rotational angle can directly show on main frame; Inspection box Plane Angle indicating device 4 and flash of light or bright spot pilot lamp 5 are arranged in inspection box 6, little magnet steel is equipped with at flash of light or bright spot pilot lamp 5 housing rear portions, inspection box outer surface level angle indicating device 4 is also equipped with little magnet steel, by two little magnet steel, inhale both are fixed mutually, like this when moving outside Plane Angle indicating device 4, the flash of light of enclosure interior or bright spot pilot lamp 5 are and then mobile, and can directly read in inspection box outside the Plane Angle of measurement; Inspection box support moving device 2 and observer's chin strap 8 are arranged at support baseboard 7 places, two ends; Rotation angle sensor 3 and inspection box 6 can move up and down at inspection box support moving device 2, adjusting position, and fixing.As shown in Figure 1.
In the utility model, described angular transducer 3 can be in perpendicular continuous rotation, indication angular resolution is 0.1 degree.
In the utility model, described flash of light or bright spot pilot lamp 5 are that red, yellow, green, blue, white five kinds of colors are optional, bright spot diameter 2mm.
In the utility model, the bright spot flicker frequency of described flash of light or bright spot pilot lamp 5 is controlled by main control system, and range frequencies 4.0-60.0Hz, is regulated by digital potentiometer, three bit digital demonstrations, and error requirements is less than 0.1Hz.
In the utility model, described inspection box 6 is semicircle casing, and it is connected with inspection box support moving device 2 by angular transducer 3; Inspection box Plane Angle indicating device 4, flash of light or bright spot pilot lamp 5 are arranged in inspection box 6, as shown in Figure 2.
In the utility model, described inspection box 6 inside are black, and are provided with brightness tunable white color background light, and angle is carved with on semicircle casing top, angular range be-90 degree to 90 degree, resolution is 10 degree, inspection box diameter 80cm.
In the utility model, perimetry can controlled observation case in bright spot, overcome the impact of parasitic light, and be furnished with red, yellow, green, blue and five kinds of bright spots of white, so can not only can measure white visual field, can also measure visual field of color.When inspection box vertically rotates, angle can directly be measured with sensor, convenient reading.
In the utility model, flicker fusion frequency measure to adopt single-chip microcomputer directly to control flashing rate, and adopts digital potentiometer to regulate, so frequency stabilization and measuring accurately.
The utility model has the advantage of, human eye perimetry and flicker fusion frequency measurement are combined in an experimental provision, and conversion is convenient, measures accurately.Also there is the features such as experiment content is abundant, reproducible, environmental requirement is low to external world.
Accompanying drawing explanation
Fig. 1 is experimental provision schematic diagram of the present utility model.
Fig. 2 is inspection box structural drawing of the present utility model.
Number in the figure: 1 is that main control system, 2 is that inspection box support moving device, 3 is that rotation angle sensor, 4 is that inspection box Plane Angle indicating device, 5 is that flash of light or bright spot pilot lamp, 6 are that inspection box, 7 is that support baseboard, 8 is observer's chin strap, and 9 is inspection box Plane Angle scale.
Embodiment
The utility model mainly comprises and mainly comprises experiment control main frame 1, inspection box support moving device 2, rotation angle sensor 3, inspection box Plane Angle indicating device 4, flash of light or bright spot pilot lamp 5, inspection box 6, support baseboard 7 and observer's chin strap 8, wherein:
Perimetry process is as follows: observer's head is placed on chin strap 8, by inspection box 6 horizontal positioned, bright spot pilot lamp 5 in mobile inspection box, can measure the visual field of horizontal direction right and left eyes, and record corresponding angle on the drawing of the visual field, rotate inspection box 5, suitable vertical angle is set, measure equally the visual field of the right and left eyes under this angle, on the drawing of the visual field, measurement point is retouched out successively, just can obtain the cyclogram of testee's right and left eyes.Change the bright spot pilot lamp 5 of different colours, same process can obtain measured's visual field of color figure.
Flicker fusion frequency measuring process is as follows: select flashing trafficator 5, initial flashing rate can be set to 10.0Hz, by inspection box 6 horizontal positioned, flashing trafficator 5 is positioned at inspection box 6 middles, subject faces shining point, select suitable bias light, regulate main frame bright spot frequency potentiometer knob, corresponding frequencies will increase or reduce, when starting to observe, subject can't see bright spot in flicker,, by reducing flicker frequency, while making just to see flicker, stop immediately, write down the flicker frequency now showing; If can see bright spot while starting in flicker, frequency is increased, just do not seen while glimmering (fusion) and stopped immediately regulating, write down its frequency.Near merging point, can repeatedly test, draw mean value.Select the flashing trafficator 5 of different colours, and switch color indicator cock on main frame, repeat the flicker fusion frequency that above step can be measured different colours.
During experiment, observer's chin strap 8 and inspection box 6 upper-lower positions all can free adjustment, are beneficial to observer and find a suitable position.
Claims (4)
1. a Medical physics experiments device of measuring the human eye visual field and flicker fusion frequency, it is characterized in that comprising main control system, inspection box support moving device, rotation angle sensor, inspection box Plane Angle indicating device, flash of light or bright spot pilot lamp, inspection box, support baseboard (7) and observer's chin strap, wherein:
Described main control system connection of rotating angular transducer and flash of light or bright spot pilot lamp, main control system shows the frequency of flashlamp, and determines shinny light color, shows in addition the angle that inspection box rotates in perpendicular; Rotation angle sensor is arranged between inspection box and inspection box support moving device, rotates inspection box in vertical plane, and rotational angle can directly show on main frame; Inspection box Plane Angle indicating device and flash of light or bright spot pilot lamp are arranged in inspection box, little magnet steel is equipped with at flash of light or bright spot cage of indicating lamp rear portion, inspection box outer surface level angle indicating device is also equipped with little magnet steel, by two little magnet steel, inhale both are fixed mutually, when moving outside Plane Angle indicating device, the flash of light of enclosure interior or bright spot pilot lamp are and then mobile, and can directly read in inspection box outside the Plane Angle of measurement; Inspection box support moving device and observer's chin strap are arranged at place, support baseboard two ends; Rotation angle sensor and inspection box can move up and down at inspection box support moving device, adjusting position, and fixing.
2. the Medical physics experiments device of the measurement human eye visual field as claimed in claim 1 and flicker fusion frequency, is characterized in that described angular transducer continuous rotation in perpendicular, and indication angular resolution is 0.1 degree.
3. the Medical physics experiments device of the measurement human eye visual field as claimed in claim 1 and flicker fusion frequency, is characterized in that described flash of light or bright spot pilot lamp are that red, yellow, green, blue, white five kinds of colors are optional, bright spot diameter 2mm.
4. the Medical physics experiments device of the measurement human eye visual field as claimed in claim 1 and flicker fusion frequency, it is characterized in that described inspection box is semicircle black casing, and be provided with brightness tunable white color background light, angle is carved with on semicircle casing top, angular range is that-90 degree are to 90 degree, resolution is 10 degree, inspection box diameter 80cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420286568.XU CN203931292U (en) | 2014-06-02 | 2014-06-02 | A kind of Medical physics experiments device of measuring the human eye visual field and flicker fusion frequency |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420286568.XU CN203931292U (en) | 2014-06-02 | 2014-06-02 | A kind of Medical physics experiments device of measuring the human eye visual field and flicker fusion frequency |
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| CN203931292U true CN203931292U (en) | 2014-11-05 |
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| CN201420286568.XU Expired - Fee Related CN203931292U (en) | 2014-06-02 | 2014-06-02 | A kind of Medical physics experiments device of measuring the human eye visual field and flicker fusion frequency |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107981836A (en) * | 2017-12-11 | 2018-05-04 | 天津城建大学 | A kind of color resolution visual field meter |
| CN108498064A (en) * | 2018-03-19 | 2018-09-07 | 中国人民解放军空军航空医学研究所 | Digitize bright spot scintillation detection system |
| CN108937836A (en) * | 2017-05-18 | 2018-12-07 | 邓铸 | A kind of polychrome luminous point flicker fusion critical frequency test device |
| CN115590517A (en) * | 2022-11-08 | 2023-01-13 | 中国民航大学（Cn） | Flight personnel visual fatigue degree identification system, method and application |
-
2014
- 2014-06-02 CN CN201420286568.XU patent/CN203931292U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108937836A (en) * | 2017-05-18 | 2018-12-07 | 邓铸 | A kind of polychrome luminous point flicker fusion critical frequency test device |
| CN107981836A (en) * | 2017-12-11 | 2018-05-04 | 天津城建大学 | A kind of color resolution visual field meter |
| CN108498064A (en) * | 2018-03-19 | 2018-09-07 | 中国人民解放军空军航空医学研究所 | Digitize bright spot scintillation detection system |
| CN115590517A (en) * | 2022-11-08 | 2023-01-13 | 中国民航大学（Cn） | Flight personnel visual fatigue degree identification system, method and application |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 Termination date: 20170602 |