CN101451908A - LED optical detector - Google Patents
LED optical detector Download PDFInfo
- Publication number
- CN101451908A CN101451908A CNA2007100322908A CN200710032290A CN101451908A CN 101451908 A CN101451908 A CN 101451908A CN A2007100322908 A CNA2007100322908 A CN A2007100322908A CN 200710032290 A CN200710032290 A CN 200710032290A CN 101451908 A CN101451908 A CN 101451908A
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- Prior art keywords
- attenuator
- lens mount
- rotating disc
- conversion equipment
- led fluorescence
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- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
The invention discloses an LED optical detector, which comprises a lens mount, an optical lens set, an attenuation sheet, a luminosity detector and a fiber sensor. The optical lens set, the attenuation sheet and the luminosity detector are arranged on the lens mount; one end of the lens mount is provided with a light inlet, and the other end of the lens mount is provided the fiber sensor; and the lens mount is also provided with an attenuation sheet converting device on which the attenuation sheet is arranged. The optical detector is simple, convenient and quick to replace the attenuation sheet. In addition, if the attenuation sheet is arranged between the optical lens set and the fiber sensor, precision of light intensity measurement can be improved.
Description
Technical field
The present invention relates to the optical detection field, relate in particular to the fluorescence detector that detects the LED optical parameter.
Background technology
At present, known in the industry LED light intensity and wavelength detecting are the spectroscopes that a plane is set in the lens mount, the light that LED to be measured sends is penetrated the surperficial separated into two parts at plane beam splitter after by attenuator, a part is reflected by spectroscope, another part is reflected by plane beam splitter, LED rayed through reflecting is on photometric detector, the photo-signal of photometric detector being exported by the light intensity display circuit changes into the voltage signal of reflection light intensity again, can determine tested LED light intensity by magnitude of voltage.Illumination after refraction is on the surface of attenuator, refract light is after overdamping, be incident upon on two convex lens again successively, LED light after two convex lens will reflect jointly focuses on becomes a light spot, this light spot is penetrated on Fibre Optical Sensor, and Fibre Optical Sensor becomes electric signal to measure the wavelength of LED signal transition by photoelectric commutator.
The shortcoming of this LED optical lens is: 1: LED light intensity, wavelength measurement are had error.In the LED test, when exceeding under the situation that spectrogram is saturated after the spectrum card measurement range, some LED product optical path signals just use attenuator, and optical detector does not need with attenuator light signal to be weakened under general LED detection case, add attenuator and only can run counter to desire, influence the authenticity of its light source.2: it is too cumbersome to change the attenuator operation in the survey debugging.Because the needs in market, the attenuator of the various different sizes of each manufacturer production cooperates different products to satisfy the needs in market.Since the product difference, and the measurement range of the Fibre Optical Sensor of measuring is certain.This just need weaken its light signal with the attenuator of various differential declines degree, makes it to reach within the measurement range of Fibre Optical Sensor.A kind of LED product of every detection installs after all will pulling down the attenuator that adds the different doughs softening to the part of fixed attenuation sheet again.The cumbersome complexity of operating process has been wasted debug time greatly, and is unfavorable for the keeping and cleaning of attenuator.
Summary of the invention
The purpose of this invention is to provide a kind of replacing attenuator simple and convenient LED light intensity and wavelength detecting fast.
The technical solution adopted in the present invention is: a kind of LED fluorescence detector, comprise lens mount, optical lens group, attenuator, photometric detector and Fibre Optical Sensor, and described optical lens group, attenuator, photometric detector are installed on the described lens mount; End at described lens mount is provided with light inlet, at the other end of described lens mount Fibre Optical Sensor is installed; Also have additional the attenuator conversion equipment on described lens mount, described attenuator is arranged on the described attenuator conversion equipment.
Described attenuator conversion equipment is arranged on lens mount top, between optical lens group and Fibre Optical Sensor.
Described attenuator conversion equipment is arranged on the lens mount bottom, between the light inlet of optical lens group and described lens mount lower end.
Described attenuator conversion equipment is made up of rotary base, rotating disc, turning axle, friction top and dust cap; Turning axle passes rotating disc and rotary base respectively from top to bottom, rotating disc and rotary base are fixed on the top of lens mount, and rotating disc is that rotate at the center with the turning axle, has a hole on the rotating disc at least, place attenuator in the hole, friction top and dust cap are housed on the attenuator.
The invention has the beneficial effects as follows that can accomplish quick, simple, convenience when changing attenuator, cost of manufacture is low.In addition, if described attenuator is arranged between optical lens group and the Fibre Optical Sensor, can improve precision of light intensity measurement.
Description of drawings
Fig. 1 is a front view of the present invention;
Fig. 2 is a light path synoptic diagram of the present invention;
Fig. 3 is a vertical view of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail:
Embodiment one
As shown in Figures 1 to 3, LED fluorescence detector of the present invention, outside forming by lens mount 31, optical lens group, attenuator 6, photometric detector 4 and Fibre Optical Sensor 7, also have additional the attenuator conversion equipment, described attenuator 6 is arranged on the described attenuator conversion equipment, described attenuator conversion equipment is arranged on lens mount 31 tops, between optical lens group and Fibre Optical Sensor 7; Described lens mount 31 lower ends are provided with a light inlet 1, and lens mount 31 inside are provided with one group of optical lens group, and the optical lens group is made up of first plano-convex lens 2 that sets gradually from bottom to up, plane beam splitter 3, second plano-convex lens 5; Described Fibre Optical Sensor 7 is installed in the upper end of described LED fluorescence detector; Described photometric detector 4 is positioned at the sidepiece of described plane beam splitter 3.
Described attenuator conversion equipment is installed in the top of lens mount 31, and this installs between optical lens group and Fibre Optical Sensor 7, and described attenuator conversion equipment is made up of rotary base 32, rotating disc 33, turning axle 36, friction top 34 and dust cap 35; Turning axle 36 passes rotating disc 33 and rotary base 32 respectively from top to bottom, rotating disc 33 and rotary base 32 are fixed on the top of lens mount 31, rotating disc 33 is that rotate at the center with turning axle 36, be arranged with dimple on its cylindrical side, have four holes on the rotating disc 33, four kinds of attenuators 6 that the dough softening is different are housed respectively in the hole, friction top 34 and dust cap 35 are housed on the attenuator 6.Side at rotating disc 33 is provided with register pin 39 and the spring 40 that pulls handle 38, an end circular arc head, and an end of register pin 39 circular arc heads passes the side dimple that pulls handle 38 and spring 40 insertion rotating discs 33.In working order, described attenuator 6 and the coaxial setting of described optical lens group.
When energized detects led light source 8, the light of LED is injected from light inlet 1, light is through first plano-convex lens 2, light is focused into a stronger light beam, through plane beam splitter 3 a part of light is reflected to photometric detector 4, the photo-signal of photometric detector 4 being exported through the light intensity display circuit converts the voltage signal that reflects light intensity to, can determine tested LED light intensity by magnitude of voltage.Another part light beam passes plane beam splitter 3 directives second plano-convex lens 5, and be the light path gathering hot spot once more, directive attenuator 6 surfaces, and attenuator 6 can be provided with the attenuator of four differential declines degree according to the characteristics of LED, when needing conversion, pulling pulls handle 38 gently, make register pin 39 break away from the dimple of rotating disc 33, rotate rotating disc 33, select to unclamp behind the appropriate dough softening attenuator 6 and pull handle 38, register pin 39 is replied under the effect of spring 40 be seated in the dimple of rotating disc 33 cylindrical sides, the locking rotating disc is finished the purpose of changing attenuator 6 apace.Hot spot obtains directive Fibre Optical Sensor 7 after the suitable decay by transmissibility of adjustable attenuation piece 6.Fibre Optical Sensor 7 converts light signal to wavelength that electric signal is measured LED.
Embodiment two
The difference of present embodiment and embodiment one is that described attenuator conversion equipment is arranged on lens mount 31 bottoms, between the light inlet 1 of optical lens group and described lens mount lower end.
The present invention also has other distortion or improvement except the foregoing description, the attenuator conversion equipment can be to comprise travelling carriage that is provided with a plurality of attenuators installation position and the slide rail that slides for described travelling carriage as described; Described slide rail is installed on the described lens mount 31; If travelling carriage and slide rail are strip, then described travelling carriage can horizontally slip; Be circle if travelling carriage is dish type and slide rail, then travelling carriage moves in a circle, and one of comparative example is not have rotating shaft.Therefore, for those skilled in the art, only otherwise leave that the spirit and scope of the present invention can be done various variations or correction is obvious, all should be included within the protection domain of claim of the present invention.
Claims (8)
1, a kind of LED fluorescence detector comprises lens mount, optical lens group, attenuator, photometric detector and Fibre Optical Sensor, and described optical lens group, attenuator, photometric detector are installed on the described lens mount; End at described lens mount is provided with light inlet, at the other end of described lens mount Fibre Optical Sensor is installed; It is characterized in that, on described lens mount, also be provided with the attenuator conversion equipment; Described attenuator is arranged on the described attenuator conversion equipment.
2, LED fluorescence detector according to claim 1 is characterized in that, described attenuator conversion equipment is arranged on lens mount top, between optical lens group and Fibre Optical Sensor.
3, LED fluorescence detector according to claim 1 is characterized in that, described attenuator conversion equipment is arranged on the lens mount bottom, between the light inlet of optical lens group and described lens mount lower end.
4. according to claim 1 or 2 or 3 described LED fluorescence detectors, it is characterized in that described attenuator conversion equipment is made up of rotary base, rotating disc, turning axle, friction top and dust cap; Turning axle passes rotating disc and rotary base respectively from top to bottom, rotating disc and rotary base are fixed on the top of lens mount, and rotating disc is that rotate at the center with the turning axle, has a hole on the rotating disc at least, place attenuator in the hole, friction top and dust cap are housed on the attenuator.
5. LED fluorescence detector according to claim 4 is characterized in that, has four holes on the described rotating disc, and four kinds of attenuators that the dough softening is different are housed respectively in the hole.
6. LED fluorescence detector according to claim 4 is characterized in that locating device also is equipped with in the side of described attenuator conversion equipment; Locating device is formed by pulling handle, register pin and spring, and register pin passes spring and pulls the side that handle is installed in rotary turnplate.
7. LED fluorescence detector according to claim 4 is characterized in that, the cylindrical side of described rotating disc is arranged with dimple.
According to claim 1 or 2 or 3 described LED fluorescence detectors, it is characterized in that 8, described optical lens group comprises first plano-convex lens, plane beam splitter, second plano-convex lens that sets gradually from bottom to up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100322908A CN101451908A (en) | 2007-12-07 | 2007-12-07 | LED optical detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100322908A CN101451908A (en) | 2007-12-07 | 2007-12-07 | LED optical detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101451908A true CN101451908A (en) | 2009-06-10 |
Family
ID=40734274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100322908A Pending CN101451908A (en) | 2007-12-07 | 2007-12-07 | LED optical detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101451908A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102706446A (en) * | 2012-05-18 | 2012-10-03 | 中国工程物理研究院应用电子学研究所 | Large-angle used sampling attenuation device of array detector |
| CN106017869A (en) * | 2016-05-16 | 2016-10-12 | 深圳市矽电半导体设备有限公司 | LED brightness test adjustment device and system |
| CN111060199A (en) * | 2019-12-26 | 2020-04-24 | 迪瑞医疗科技股份有限公司 | Optical detection system with self-checking device and self-checking method |
-
2007
- 2007-12-07 CN CNA2007100322908A patent/CN101451908A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102706446A (en) * | 2012-05-18 | 2012-10-03 | 中国工程物理研究院应用电子学研究所 | Large-angle used sampling attenuation device of array detector |
| CN106017869A (en) * | 2016-05-16 | 2016-10-12 | 深圳市矽电半导体设备有限公司 | LED brightness test adjustment device and system |
| CN106017869B (en) * | 2016-05-16 | 2018-04-24 | 深圳市矽电半导体设备有限公司 | A kind of LED luminance test regulating device and system |
| CN111060199A (en) * | 2019-12-26 | 2020-04-24 | 迪瑞医疗科技股份有限公司 | Optical detection system with self-checking device and self-checking method |
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Open date: 20090610 |