CN202793591U - 45-degree annular lighting reflection spectrum spectrophotometry light path device - Google Patents
45-degree annular lighting reflection spectrum spectrophotometry light path device Download PDFInfo
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- CN202793591U CN202793591U CN 201220486185 CN201220486185U CN202793591U CN 202793591 U CN202793591 U CN 202793591U CN 201220486185 CN201220486185 CN 201220486185 CN 201220486185 U CN201220486185 U CN 201220486185U CN 202793591 U CN202793591 U CN 202793591U
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Abstract
The utility model discloses a 45-degree annular lighting reflection spectrum spectrophotometry light path device. A zero degree measuring hohlraum is suspended in an integrating sphere, a convergent lens is mounted in the zero degree measuring hohlraum, a zero degree measuring hole is arranged at the top of the zero degree measuring hohlraum, a collimating lens is correspondingly arranged below the zero degree measuring hohlraum, two layers of annular diaphragms are sequentially and downwards arranged from the middle of the integrating sphere by surrounding the zero degree measuring hohlraum, a semisphere lower surface of the integrating sphere is located above the two layers of annular diaphragms, annular light permeable slots are arranged on the two layers of annular diaphragms and the semisphere lower surface of the integrating sphere, lights permeate through the light permeable slots on the two layers of annular diaphragms and the semisphere lower surface of the integrating sphere to form a 450-degree included angle with a face normal of a measured sample, and a plurality of light-emitting diode (LED) light source arrays are uniformly distributed on the semisphere lower surface of the integrating sphere by surrounding the zero degree measuring hohlraum. The 45-degree annular lighting reflection spectrum spectrophotometry light path device has the advantages that the emitted lights of an LED light source in a semisphere can be fully homogenized, the completeness of measured spectrum is guaranteed, and the repeatability of measurement is guaranteed.
Description
Technical field
The utility model relates to a kind of optical system for testing device, particularly a kind of 45 degree ring illumination reflectance spectrum spectrophotometric light path devices.
Background technology
In reflectance spectrum spectrophotometer instrument, the selection of testing light source is vital, and under the lighting condition of testing light source, the measurement result of color should to observe the true colors of object under natural light basically identical with human eye.Existing technology generally all is to adopt pulse xenon lamp as testing light source, but because the structure of xenon lamp mostly is strip, is difficult to realize the test zone Uniform Illumination.Illumination is also very important with the geometric condition of test, this directly has influence on precision and the repeatability of test result, in existing color measurement instrument, the measurement of sample reflectance spectrum, 45 °/vertically illumination and the test structure of (symbol is 45/0) they are to obtain the measurement structure close with human eye perceives.Measure structure to 45/0 in the national standard three evaluation indexes are arranged: repdocutbility, repeatability and the error of indication.Light source is mainly reflected in the impact of three evaluation indexes: the index of repdocutbility is main relevant to the irradiation uniformity coefficient of sample from different directions with light source; Whether the good and bad of the error of indication mainly is evenly distributed relevant in visible-range with light source; Repeatability is main relevant with the stability of light source.But insufficient light and orientation problem appear in this structure easily, namely can cause during at self Plane Rotation the data differences of testing very large when specimen.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of light source equally distributed 45 degree ring illumination reflectance spectrum spectrophotometric light path devices.
In order to solve above technical matters, the utility model provides a kind of 45 degree ring illumination reflectance spectrum spectrophotometric light path devices, in an integrating sphere, hang one 0 ° and measure black chamber, measure in the black chamber for 0 ° convergent lens is arranged, 0 ° of instrument connection is arranged at the top, below 0 ° of black chamber of measurement collimation lens are arranged accordingly, measure black chamber around 0 °, be provided with successively two layers of annular diaphragm downwards from the integrating sphere middle part, two layers of annular diaphragm top are integrating sphere hemisphere lower surface, all have annular transmissive slit on two layers of annular diaphragm He on the integrating sphere hemisphere lower surface, light becomes 45 by the transmissive slit on integrating sphere hemisphere lower surface and the two layers of annular diaphragm with the sample surface normal
0Angle, on integrating sphere hemisphere lower surface, measure black chamber around 0 ° and evenly be laid with a plurality of led light source arrays.
Measure black inner cavity surface and apply the black light-absorbing material for described 0 °, and be threaded structure, remove the parasitic light that produces when measuring lens focus in the black chamber by 0 °.
The interior spherical surface uniform of the described integrating sphere first half is coated with full high reflectance diffuse-reflective material.Described integrating sphere hemisphere lower surface is a plane, and the surface adopts the high glaze minute surface as the surface.Make light that led light source sends within it section carry out fully diffuse reflection, light is evenly distributed in that integrating sphere is inner, realize well even light effect.
Have the aperture of monitoring light source fluctuation on the described integrating sphere first half ball wall, as the reference light path.In order to prevent that the light that led light source sends from not passing through the homogenising of integrating sphere spheroid and being directly incident on reference path, near the integrating sphere hemisphere lower surface place aperture is provided with the reference path baffle plate.The emergent light that guarantees any one led light source can not be directly incident on reference path, incide reference path only through diffusing after the integrating sphere spheroid homogenising.The effect of reference path is in order to monitor intensity of light source fluctuation, reference path and measurement main optical path to be tested simultaneously, can removing light source fluctuation to measuring the impact that produces.
Described a plurality of led light source array, each led light source has driving power and semisphere light diffusion shell, semisphere light diffusion shell is with the first half of the even directive integrating sphere of led light source, light after the homogenising is by the transmissive slit on integrating sphere hemisphere lower surface and the two layers of annular diaphragm, until following collimation lens.Integrating sphere hemisphere lower surface is offered a transmissive slit, and from the slit outgoing, through being incident to lens behind two diaphragms, light projects the testee surface through becoming directional light behind these lens through the light after the integrating sphere hemisphere homogenising.Led light source adopts 12 high-power LED light sources to mate, and wherein every group of 6 led light source obtains the spectrum of whole wave bands in the required measure spectrum scope through accurate spectrum cascade matching; In addition, on spatial arrangement, two groups of led light sources become Central Symmetry to distribute, and are convenient to light source and fully mix in the space and even the distribution.Impact for the own lighting angle of led light source that weakens, designed semisphere light diffusion shell at each led light source, make the luminous light intensity angle of each LED be distributed as approximate lambert's body, enlarged the lighting angle of led light source, the spectrum of being convenient to each wave band mixes in the integrating sphere hemisphere fully.
The specimen mouth is arranged at described collimation lens bottom.Light becomes the diffused light relevant with the sample surface structure to throw with sample surface miter angle direction after the sample reflection.0 degree reflected light is partly through converging at 0 degree instrument connection after the light path effect that lens form in condenser lens and the black chamber of test in the diffused light.So far realized the 45 degree light incidents of sample surface annular light source, 0 degree detects.
Superior effect of the present utility model is:
1) realized the homogeneity of testing light source: the effect by integrating sphere hemisphere makes led light source luminous in hemisphere full and uniformization, to get light intensity even so that penetrating the slit place, guaranteed to incide the only approximately equalised of sample surface from all directions, namely reduced because the impact that different directions incident intensity difference produces measurement result;
2) adopt a plurality of LED couplings so that the light spectral distribution that penetrates from slit has enough intensity in the detected light spectral limit, guaranteed the integrality of test spectral;
3) in integration hemisphere, reference path is set, eliminates light source fluctuation to measuring the impact that produces by the monitoring light source fluctuation, guaranteed the repeatability of measuring.
Description of drawings
Fig. 1 is sectional structure synoptic diagram of the present utility model;
Fig. 2 is perspective view of the present utility model;
Fig. 3 is the structural representation of the single led light source of the utility model;
Fig. 4 is the structural representation of the utility model led light source array;
The number in the figure explanation
1-single led light source; 2-semisphere light diffusion shell;
3-driving power;
10-specimen mouth; 11-integrating sphere Lower Half;
12-integrating sphere first half; 13-collimation lens;
14-annular diaphragm C; 15-annular diaphragm B;
16-integrating sphere hemisphere lower surface; 17-transmissive slit;
18-annular transmissive slit P; 19-annular transmissive slit Q;
The driving power array of 20-led light source; 21-led light source array;
22-semisphere light shield array; Measure black chamber for 23-0 °;
24-convergent lens; 25-helicitic texture;
26-0 ° of instrument connection; 27-aperture;
28-reference path baffle plate; 29-light splitting optical path M;
30-sensor and signal processing circuit J; 31-light splitting optical path N;
32-sensor and signal processing circuit K.
Embodiment
See also shown in the accompanying drawing, the utility model will be further described.
As depicted in figs. 1 and 2, the utility model provides a kind of 45 degree ring illumination reflectance spectrum spectrophotometric light path devices, in an integrating sphere, hang one 0 ° and measure black chamber 23, measure in the black chamber 23 for 0 ° convergent lens 24 is arranged, 0 ° of instrument connection 26 is arranged at the top, below 0 ° of black chamber 23 of measurement collimation lens 13 are arranged accordingly, measure black chamber 23 around 0 °, be provided with successively two layers of annular diaphragm B15 downwards from the integrating sphere middle part, C14, two layers of annular diaphragm top are integrating sphere hemisphere lower surface 16, annular diaphragm B15, all have annular transmissive slit P18 and annular transmissive slit Q19 on annular diaphragm C14 and the integrating sphere hemisphere lower surface 16, light is by integrating sphere lower surface 16, annular transmissive slit 17 on annular diaphragm B15 and the annular diaphragm C14, behind annular transmissive slit P18 and the annular transmissive slit Q19, become 45 with the sample surface normal
0Angle, on integrating sphere hemisphere lower surface 16, measure black chamber around 0 ° and evenly be laid with a plurality of led light source arrays 21.
Described 0 ° of measurement is deceived chamber 23 inside surfaces and is applied the black light-absorbing material, and is threaded structure 25, the parasitic light that removal produces when deceiving chamber 23 interior lens focus by 0 ° of measurement, and the light of 0 ° of instrument connection 26 is finally incided in further restriction.
The interior spherical surface uniform of the described integrating sphere first half 12 is coated with full barium sulphate, and the light fully diffuse reflection of section within it that led light source array 21 is sent makes light in the inner evenly distribution of integrating sphere.Described integrating sphere hemisphere lower surface 16 is planes, and the surface adopts the high glaze minute surface as the surface.Make light that led light source sends within it section carry out fully diffuse reflection, light is evenly distributed in that integrating sphere is inner, realize well even light effect.
Have the aperture 27 of monitoring light source fluctuation on the described integrating sphere first half 12 ball walls, as the reference light path.In order to prevent that the light that led light source sends from not passing through the homogenising of integrating sphere spheroid and being directly incident on reference path, near integrating sphere hemisphere lower surface 16 places aperture 27 are provided with reference path baffle plate 28.The emergent light that guarantees any one led light source can not be directly incident on reference path, incide reference path only through diffusing after the integrating sphere spheroid homogenising.The effect of reference path is in order to monitor intensity of light source fluctuation, reference path and measurement main optical path to be tested simultaneously, can removing light source fluctuation to measuring the impact that produces.
As shown in Figure 3, described a plurality of led light source array 21, each led light source 1 has driving power 3 and semisphere light diffusion shell 2, semisphere light diffusion shell 2 is with the first half 12 of led light source 1 even directive integrating sphere, light after the homogenising by annular transmissive slit 17, annular transmissive slit P18 and annular transmissive slit Q19 on integrating sphere lower surface 16, annular diaphragm B15 and the annular diaphragm C14 after, until following collimation lens 13.Integrating sphere hemisphere lower surface 16 is offered a transmissive slit 17, and from transmissive slit 17 outgoing, through being incident to lens 13 behind two diaphragms, light projects the testee surface through becoming directional light behind these lens 13 through the light after the integrating sphere hemisphere homogenising.As shown in Figure 4, led light source adopts 12 high-power LED light sources 1 to mate, and wherein every group of 6 led light sources 1 obtain the spectrum of whole wave bands in the required measure spectrum scope through accurate spectrum cascade matching; In addition, on spatial arrangement, 1 one-tenth Central Symmetry of two groups of led light sources distributes, and is convenient to light source and fully mixes in the space and even the distribution.Impact for the own lighting angle of led light source that weakens, designed semisphere light diffusion shell 2 at each led light source, make the luminous light intensity angle of each LED be distributed as approximate lambert's body, enlarged the lighting angle of led light source, the spectrum of being convenient to each wave band mixes in the integrating sphere hemisphere fully.
After the light that a plurality of led light source arrays 21 send spreads fully through semisphere light diffusion shell array 22, diffuse in the whole integrating sphere first half 12, light is in the integrating sphere first half 21, through after the complete diffuse reflection, transmitted by annular transmissive slit 17, become endless belt-shaped light source, pass through respectively more annular transmissive slit P18 and annular transmissive slit Q19, further restriction light source incident angle incides light source on the collimation lens 13 and can be similar to and regard the annular light source that is comprised of the series of points light source as.Collimation lens 13 will incide light on it and become source of parallel light with specimen angle at 45 °, this source of parallel light shines on the specimen, realize the illumination test structure of 45 ° of annulars.
0 ° of measured hole 26 is arranged on the top of the integrating sphere first half 12 vertical with specimen.45 ° of sources of parallel light of annular shine on the specimen 10, on specimen 10 surfaces diffuse reflection occurs, the diffuse reflection light source is assembled through collimation lens 13, and the light source after the convergence enters 0 ° and measures black chamber 23, through entering the helicitic texture 25 in black chamber behind the convergent lens 24, arrive 0 ° of measured hole 26 again.
Measure the light that convergent lens 24 and 0 ° of instrument connection 26 are incided in 23 restrictions of black chamber, guarantee 0 ° of test condition for 0 °.
0 ° of instrument connection 26 is the instrument connection of specimen, and reference path instrument connection 27 is the reference path instrument connection, after meet light splitting optical path M29, N31, sensor and processing of circuit unit J30, K32.
Claims (7)
1. spend ring illumination reflectance spectrum spectrophotometric light path device for one kind 45, it is characterized in that: in an integrating sphere, hang one 0 ° and measure black chamber, measure in the black chamber for 0 ° convergent lens is arranged, 0 ° of instrument connection is arranged at the top, below 0 ° of black chamber of measurement collimation lens are arranged accordingly, measure black chamber around 0 °, be provided with successively two layers of annular diaphragm downwards from the integrating sphere middle part, two layers of annular diaphragm top are integrating sphere hemisphere lower surface, all have annular transmissive slit on two layers of annular diaphragm He on the integrating sphere hemisphere lower surface, light becomes 45 by the transmissive slit on integrating sphere hemisphere lower surface and the two layers of annular diaphragm with the sample surface normal
0Angle, on integrating sphere hemisphere lower surface, measure black chamber around 0 ° and evenly be laid with a plurality of led light source arrays.
2. according to claim 1 45 spend ring illumination reflectance spectrum spectrophotometric light path devices, it is characterized in that: described a plurality of led light source arrays, each led light source has driving power and semisphere light diffusion shell, semisphere light diffusion shell is with the first half of the even directive integrating sphere of led light source, light after the homogenising is by the transmissive slit on integrating sphere hemisphere lower surface and the two layers of annular diaphragm, until following collimation lens.
3. 45 degree ring illumination reflectance spectrum spectrophotometric light path devices according to claim 1 is characterized in that: measure black inner cavity surface coating black light-absorbing material, and be threaded structure for described 0 °.
4. according to claim 1 45 spend ring illumination reflectance spectrum spectrophotometric light path devices, and it is characterized in that: the interior spherical surface uniform of the described integrating sphere first half is coated with full high reflectance diffuse-reflective material.
5. according to claim 1 45 spend ring illumination reflectance spectrum spectrophotometric light path devices, and it is characterized in that: described integrating sphere hemisphere lower surface is a plane, and the surface adopts the high glaze minute surface as the surface.
6. according to claim 1 45 spend ring illumination reflectance spectrum spectrophotometric light path devices, it is characterized in that: the aperture that has the monitoring light source fluctuation on the described integrating sphere first half ball wall, as the reference light path, near the integrating sphere hemisphere lower surface place aperture is provided with the reference path baffle plate.
7. 45 degree ring illumination reflectance spectrum spectrophotometric light path devices according to claim 1 is characterized in that: the specimen mouth is arranged bottom the described collimation lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220486185 CN202793591U (en) | 2012-09-24 | 2012-09-24 | 45-degree annular lighting reflection spectrum spectrophotometry light path device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220486185 CN202793591U (en) | 2012-09-24 | 2012-09-24 | 45-degree annular lighting reflection spectrum spectrophotometry light path device |
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| CN202793591U true CN202793591U (en) | 2013-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220486185 Expired - Fee Related CN202793591U (en) | 2012-09-24 | 2012-09-24 | 45-degree annular lighting reflection spectrum spectrophotometry light path device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105572058A (en) * | 2014-10-09 | 2016-05-11 | 深圳迈瑞生物医疗电子股份有限公司 | Sample analyzer and absorbance measurement device thereof |
| CN111175627A (en) * | 2018-11-09 | 2020-05-19 | 固安鼎材科技有限公司 | Photoelectric and quantum efficiency testing system for OLED device |
-
2012
- 2012-09-24 CN CN 201220486185 patent/CN202793591U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105572058A (en) * | 2014-10-09 | 2016-05-11 | 深圳迈瑞生物医疗电子股份有限公司 | Sample analyzer and absorbance measurement device thereof |
| CN105572058B (en) * | 2014-10-09 | 2024-01-02 | 深圳迈瑞生物医疗电子股份有限公司 | Sample analyzer and absorbance measuring device thereof |
| CN111175627A (en) * | 2018-11-09 | 2020-05-19 | 固安鼎材科技有限公司 | Photoelectric and quantum efficiency testing system for OLED device |
| CN111175627B (en) * | 2018-11-09 | 2023-04-07 | 固安鼎材科技有限公司 | Photoelectric and quantum efficiency testing system for OLED device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20130924 |