CN102175315A - Light damage measurement instrument based on relationship between pupil size and ambient brightness - Google Patents
Light damage measurement instrument based on relationship between pupil size and ambient brightness Download PDFInfo
- Publication number
- CN102175315A CN102175315A CN2011100440949A CN201110044094A CN102175315A CN 102175315 A CN102175315 A CN 102175315A CN 2011100440949 A CN2011100440949 A CN 2011100440949A CN 201110044094 A CN201110044094 A CN 201110044094A CN 102175315 A CN102175315 A CN 102175315A
- Authority
- CN
- China
- Prior art keywords
- brightness
- computing machine
- size
- spectrometer
- illumination
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention relates to a light damage measurement instrument based on the relationship between pupil size and ambient brightness, which consists of a light source, a field diaphragm, a control table, an illuminance probe, a controllable diaphragm, an integrating sphere, a spectrometer and a computer, wherein the light source, the field diaphragm and the integrating sphere are positioned on the control table respectively, the controllable diaphragm is connected with the integrating sphere which is connected with the spectrometer, the spectrometer is connected with the computer which is connected with the illuminance probe and the controllable diaphragm, the illuminance probe sends illuminance to the computer in the form of electric signal, the computer converts the illuminance value to a brightness value by means of computation, determines the size of pupil in human eyes under relevent situations according to the brightness level of the brightness value, and sends a control signal to change the size of the controllable diaphragm, afterwards, brightness is measured and finally, relevant spectrum data and brightness are obtained in the computer. The instrument effectively simulates the quantity of light entering pupil under different brightness levels through the controllable diaphragm; the data derived from measurement accords better with actual situation. Measurement precision can be effectually improved by the integrating sphere instead of using a portable optical spectrum instrument directly. Direct brightness measurement is replaced by the use of the illuminance probe for measurement.
Description
Technical field
The invention belongs to illumination measurement and corresponding photo bio security measurement field thereof, be specifically related to a kind of light harm surveying instrument based on pupil size and ambient brightness relation.
Background technology
Photobiology in recent years studies show that optical radiation and human health are closely bound up, no matter be ultraviolet light, visible light, infrared light, under the suitable situation of irradiation, can both produce active influence to the physiology of human body.Yet, under the situation of underexposure or overexposure, the influence that optical radiation brings or be negligible, or just have potential hazard.As shown in table 1, unsuitable illumination meeting causes certain damage to human body.
Table 1 light is to people's degree of impairment:
Present studies show that, high-intensity optical radiation, can work the mischief to human eye: when one, high-intensity ultraviolet ray shines human eye, at the beginning, the outermost layer cell of cornea and conjunctiva will be destroyed, and 6-8 as a child after, human eye has tangible foreign body sensation, may cause photic keratitis and photic conjunctivitis; Two, under the effect of light, have special chemistry and physical property behind the molecule absorption luminous energy, can produce some special chemical changes, for human eye, the photochemical reaction that long-term ultraviolet ray irradiation causes can change the specific proteins in the crystalline lens, cause endochrome calmness, crystalline lens unclear, even blind, cause cataract; Three, when very strong optical radiation shines on the retina, the thermal effect of the optical radiation retina of burning, as shown in Figure 1, D
PupilBeing pupil diameter, is about 7mm under the maximum case, D
RetBe imaging region on the retina, about 10 microns of minimum diameter.If inciding the luminous flux of pupil is Φ, so, the illumination on the cornea:
And the illumination on the retina:
Therefore:
That is to say that illumination maximum on the retina can be 500,000 times of illumination on the cornea; Four, medium or high-intensity blue light also can produce certain photochemistry harm to the human eye effect, and severe patient can cause the retinitis.
At present developed countries has formed the system of the comparatively perfect evaluation optical radiation security of a cover, has formulated corresponding Codes and Standards, as IEC62471 Photobiological safety of lamps and lamp systems etc.
Present two kinds of methods that can adopt for the measurement of radiance:
(1) standard method:
As shown in Figure 2, the aperture diaphragm that minimum limit value diameter is D is equivalent to the pupil diameter of 7mm for light-pulse generator.Instrument by calibration records brightness value.
(2) alternative method:
As long as determine the accurately market of definition, the irradiance value junior one visual field of measuring just can obtain the spoke brightness value.So the method that standard method can be reduced to is as shown in Figure 3 measured.
Method acquiescence pupil diameter is 7mm, and this is for simplified measurement certainly, but in fact the size of human eye pupil changes along with the power of surround lighting.If can under the luminous environment of different magnitude intensity, adopt different human eye pupil diameter to measure, science, accurately more.
Summary of the invention
The object of the present invention is to provide a kind of light harm surveying instrument based on pupil size and ambient brightness relation.
The light harm surveying instrument that the present invention proposes based on pupil size and ambient brightness relation, by light source and field stop 1, control desk 2,. illumination probe 3, controlled diaphragm 4,. integrating sphere 5, spectrometer 7 and computing machine 8 are formed, wherein: light source and field stop 1 and integrating sphere 5 lay respectively at control desk 2 tops, controlled diaphragm 4 is connected with integrating sphere 5 one sides, integrating sphere 5 opposite sides are connected with spectrometer 7, spectrometer 7 is connected with computing machine 8, illumination probe 3 is connected with computing machine 8, be used to transmit the illumination photometry signal, computing machine 8 is connected with controlled diaphragm 4, control diaphragm size is used to transmit control signal, the light-emitting window of light source and field stop 1 is aimed at the light inlet of illumination according to probe 3, illumination probe 3 sends to computing machine 8 with the illumination that records with electrical signal form, computing machine 8 is by calculating, brightness value is converted into brightness value, determine corresponding situation servant's eye pupil hole size according to its brightness degree, and send control signal, change the size of controlled diaphragm 4, carry out brightness measurement then, finally in computing machine, obtain corresponding spectroscopic data and brightness size.
Among the present invention, described spectrometer 7 can be gathered the spectral signature of ultraviolet, visible, infrared three wave bands, and sends it to and carry out data processing in the computing machine 8.
Among the present invention, the illumination data that described computing machine 8 can be gathered the illumination probe converts brightness value to, and finds out corresponding pupil size according to brightness degree, and controls the size of controlled diaphragm with this.Simultaneously, handle the data that spectrometer collects, write down and handle corresponding spectral information.
Circuit structure design of the present invention can be achieved as follows function:
In the light harm of given visual field is measured, the light source and the stationkeeping of field stop and integrating sphere are in the same place by control desk.The light that light source sends, by illumination probe acquired signal, use following formula to be converted near the diaphragm approximate brightness in computing machine:
In the formula:
L---the approximate brightness that controlled diaphragm is received;
E---the brightness value that the illumination probe detection arrives;
R---the distance of probe and light source;
The size of F---field stop.
The approximate brightness value that obtains can the table of comparisons 2, finds out the pupil diameter under the corresponding bright grade.Computing machine sends a signal to controlled diaphragm, and control enters the light quantity in the integrating sphere.Pass through integrating sphere, spectrometer measurement spectral component and brightness values then, and then measure the injury that different spectral components cause human eye.
Table 2 brightness degree and the pupil diameter table of comparisons;
The present invention compares with existing measuring light bio-safety instrument, has following advantage:
(1) effectively simulates the light quantity that enters pupil under the different brightness degrees by controlled diaphragm; Recording data tallies with the actual situation more.
(2), rather than directly adopt the portable spectrometer device can effectively improve measuring accuracy by integrating sphere.
(3) adopt the illumination probe measurement to replace direct brightness measurement.We only need find a brightness degree to control the size of controlled diaphragm, and the illumination photometry instrument is simple, low price, and response speed is exceedingly fast, and change into brightness value by computing machine, and controlled diaphragm is sent control signal.Such design had both reduced the cost of equipment, had improved the reaction velocity of equipment again.
Description of drawings
Fig. 1 is cornea and retinal illuminance synoptic diagram.
Fig. 2 is a standard method synoptic diagram of measuring spoke brightness.
Fig. 3 is an alternative method synoptic diagram of measuring spoke brightness.
Fig. 4 is an overall system diagram of the present invention.
Fig. 5 is a whole instrument and equipment synoptic diagram of the present invention.
Fig. 6 is the control procedure synoptic diagram to controlled diaphragm.
Number in the figure: 1 is light source and field stop; 2 is control desk; 3 are the illumination probe; 4 is controlled diaphragm; 5 is integrating sphere; 6 is optical fiber; 7 is spectrometer; 8 is computing machine.
Embodiment
Below in conjunction with accompanying drawing technical scheme of the present invention is described further:
Embodiment 1: referring to Fig. 4, Fig. 5, the present invention includes light source and field stop 1, control desk 2, illumination probe 3, controlled diaphragm 4, integrating sphere 5, optical fiber 6, spectrometer 7 and computing machine 8.Be explained in detail with regard to each instrument and accessory below.Light source is connected with control desk 2 with field stop 1, control desk 2 is connected with integrating sphere 5, controlled diaphragm 4 is connected with integrating sphere 5, integrating sphere 5 is connected with spectrometer 7, spectrometer 7 is connected with computing machine 8, and illumination probe 3 is connected with computing machine 8, is used to transmit the illumination photometry signal, computing machine 8 is connected with controlled diaphragm 4, and control diaphragm size is used to transmit control signal.Illumination is visited, and 3 illumination of measuring convert brightness to by computing machine, and finds corresponding pupil size according to its brightness degree, and transmits control signal to controlled diaphragm, controls its size.Spectrometer 7 can be gathered the spectral signature of ultraviolet, visible, infrared three wave bands, and sends it to and carry out data processing in the computing machine.The illumination data that computing machine 8 can be gathered the illumination probe converts brightness value to, and finds out corresponding pupil size according to brightness degree, and controls the size of controlled diaphragm with this.Simultaneously, handle the data that spectrometer collects, write down and handle corresponding spectral information.
When light source luminescent to be measured and after stablizing, as shown in Figure 6, illumination probe 3 sends the illumination that records to computing machine 8 with the form of electric signal, pass through in the computing machine 8 to calculate, brightness value is converted into brightness value, determine corresponding situation servant's eye pupil hole size according to its brightness degree, and send control signal, change the size of controlled diaphragm 4.Carry out brightness measurement then, finally in computing machine 8, obtain corresponding spectroscopic data and brightness size.Be used to carry out next step processing.
Claims (3)
1. the light based on pupil size and ambient brightness relation endangers surveying instrument, by light source and field stop (1), control desk (2), illumination probe (3), controlled diaphragm (4),. integrating sphere (5), spectrometer (7) and computing machine (8) are formed, it is characterized in that: light source and field stop (1) and integrating sphere (5) lay respectively at control desk (2) top, controlled diaphragm (4) is connected with integrating sphere (5) one sides, integrating sphere (5) opposite side is connected with spectrometer (7), spectrometer (7) is connected with computing machine (8), illumination probe (3) is connected with computing machine (8), be used to transmit the illumination photometry signal, computing machine (8) is connected with controlled diaphragm (4), control diaphragm size is used to transmit control signal, the light-emitting window of light source and field stop (1) is aimed at the light inlet of illumination according to probe (3), illumination probe (3) sends to computing machine (8) with the illumination that records with electrical signal form, computing machine (8) is by calculating, brightness value is converted into brightness value, determine corresponding situation servant's eye pupil hole size according to its brightness degree, and send control signal, change the size of controlled diaphragm (4), carry out brightness measurement then, finally in computing machine, obtain corresponding spectroscopic data and brightness size.
2. according to the described light harm surveying instrument of claim (1) based on pupil size and ambient brightness relation, it is characterized in that described spectrometer (7) can gather the spectral signature of ultraviolet, visible, infrared three wave bands, and send it in the computing machine (8) and carry out data processing.
3. according to the described light harm surveying instrument of claim (1) based on pupil size and ambient brightness relation, it is characterized in that the illumination data that described computing machine (8) is gathered the illumination probe converts brightness value to, and find out corresponding pupil size, and control the size of controlled diaphragm with this according to brightness degree; Simultaneously, handle the data that spectrometer (7) collects, write down and handle corresponding spectral information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100440949A CN102175315A (en) | 2011-02-24 | 2011-02-24 | Light damage measurement instrument based on relationship between pupil size and ambient brightness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100440949A CN102175315A (en) | 2011-02-24 | 2011-02-24 | Light damage measurement instrument based on relationship between pupil size and ambient brightness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102175315A true CN102175315A (en) | 2011-09-07 |
Family
ID=44518525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100440949A Pending CN102175315A (en) | 2011-02-24 | 2011-02-24 | Light damage measurement instrument based on relationship between pupil size and ambient brightness |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102175315A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106352975A (en) * | 2016-08-31 | 2017-01-25 | 上海复展智能科技股份有限公司 | Wearable Citopic dose testing equipment |
| CN109556710A (en) * | 2018-12-28 | 2019-04-02 | 浙江智慧照明技术有限公司 | Lighting environment optical sensor |
| CN109632270A (en) * | 2019-01-22 | 2019-04-16 | 莱茵技术（上海）有限公司 | A kind of bulb lamp optical security and integrated test system for performance |
| CN110926599A (en) * | 2018-09-20 | 2020-03-27 | 宁波舜宇光电信息有限公司 | Structured light projection module human eye safety detection device and detection method thereof |
| CN111766047A (en) * | 2020-06-03 | 2020-10-13 | 杭州三泰检测技术有限公司 | Laser display visual speckle detection device for simulating human eyes |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6141092A (en) * | 1997-11-06 | 2000-10-31 | Samsung Electronics Co., Ltd. | Method and apparatus for measuring a flicker level |
| CN101625263A (en) * | 2008-07-07 | 2010-01-13 | 杭州浙大三色仪器有限公司 | Brightness measuring device |
| WO2010091830A1 (en) * | 2009-02-11 | 2010-08-19 | Diehl Aerospace Gmbh | Luminous flux measurement of the light emitting diodes |
| CN201611279U (en) * | 2009-12-23 | 2010-10-20 | 杭州远方光电信息有限公司 | Brightness measuring unit |
-
2011
- 2011-02-24 CN CN2011100440949A patent/CN102175315A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6141092A (en) * | 1997-11-06 | 2000-10-31 | Samsung Electronics Co., Ltd. | Method and apparatus for measuring a flicker level |
| CN101625263A (en) * | 2008-07-07 | 2010-01-13 | 杭州浙大三色仪器有限公司 | Brightness measuring device |
| WO2010091830A1 (en) * | 2009-02-11 | 2010-08-19 | Diehl Aerospace Gmbh | Luminous flux measurement of the light emitting diodes |
| CN201611279U (en) * | 2009-12-23 | 2010-10-20 | 杭州远方光电信息有限公司 | Brightness measuring unit |
Non-Patent Citations (1)
| Title |
|---|
| 胡英奎等: "《道路照明条件下驾驶员瞳孔大小变化规律》", 《重庆大学学报》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106352975A (en) * | 2016-08-31 | 2017-01-25 | 上海复展智能科技股份有限公司 | Wearable Citopic dose testing equipment |
| CN106352975B (en) * | 2016-08-31 | 2017-09-29 | 上海复展智能科技股份有限公司 | Wearable dosage test equipment of heralding daybreak |
| CN110926599A (en) * | 2018-09-20 | 2020-03-27 | 宁波舜宇光电信息有限公司 | Structured light projection module human eye safety detection device and detection method thereof |
| CN110926599B (en) * | 2018-09-20 | 2022-03-29 | 宁波舜宇光电信息有限公司 | Structured light projection module human eye safety detection device and detection method thereof |
| CN109556710A (en) * | 2018-12-28 | 2019-04-02 | 浙江智慧照明技术有限公司 | Lighting environment optical sensor |
| CN109556710B (en) * | 2018-12-28 | 2024-04-16 | 浙江智慧照明技术有限公司 | Lighting ambient light sensor |
| CN109632270A (en) * | 2019-01-22 | 2019-04-16 | 莱茵技术（上海）有限公司 | A kind of bulb lamp optical security and integrated test system for performance |
| CN111766047A (en) * | 2020-06-03 | 2020-10-13 | 杭州三泰检测技术有限公司 | Laser display visual speckle detection device for simulating human eyes |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204859607U (en) | Active intelligent illumination automatic control lamp | |
| JP5976954B2 (en) | Apparatus and method for detection and quantification of eye damage variations caused by blue and violet light in the visible spectrum | |
| CN102175315A (en) | Light damage measurement instrument based on relationship between pupil size and ambient brightness | |
| US9310298B2 (en) | Devices and methods for measuring light | |
| JP2014513818A5 (en) | ||
| RU2010107474A (en) | MULTIFOCUS INTRAOCULAR LENS SYSTEM AND METHODS | |
| CN204988504U (en) | Ray radiation safety measuring device | |
| SG10201809839SA (en) | Otoscope and otoscopic method based on spectral analysis | |
| US20140077070A1 (en) | Unit for determining the type of a dominating light source by means of two photodiodes | |
| CN205317347U (en) | Blue light harm measuring device | |
| CN104406937B (en) | A kind of optical system for measuring retro-reflecting coefficient | |
| TW201513827A (en) | Portable pupil detecting device of multi-band stimulating light and infrared ray's illumination | |
| RU2014150762A (en) | PORTABLE DEVICE FOR MEASURING CHROMOPHORES IN SKIN AND METHOD OF APPLICATION OF THE DEVICE | |
| CN207231631U (en) | Anti-blue light device testing apparatus | |
| CN106352975B (en) | Wearable dosage test equipment of heralding daybreak | |
| KR20200133570A (en) | Inspection device for blocking harmful rays of eyeglass lenses | |
| RU2510965C1 (en) | Forensic expert video system | |
| CN103674492B (en) | Automatic darkening welding filter lens diffused light reduction luminance factor measuring method | |
| Hietanen et al. | Ultraviolet radiation and blue light from photofloods in television studios and theaters | |
| Masili et al. | Sunglasses: calculation for corneal exposure and influx of UV through the pupil | |
| Cavatorta et al. | A survey of sources of incoherent artificial optical radiation in a hospital environment in accordance with European Directive 2006/25/EC: evaluation of the related exposure risk | |
| Haferkemper et al. | Photobiological safety of LED-based lighting systems–theory and practical hazard assessment | |
| CN214502671U (en) | Optical filter for illumination rhythm effect intensity measuring probe | |
| RU183435U1 (en) | Sunglasses Quality Checker | |
| CN112539922B (en) | Head-mounted display device, blue light testing system and blue light testing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110907 |