CN101013062A - Transmittance ratio test system for folding-shaft periscopic telescope optical system - Google Patents
Transmittance ratio test system for folding-shaft periscopic telescope optical system Download PDFInfo
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- CN101013062A CN101013062A CN 200710063160 CN200710063160A CN101013062A CN 101013062 A CN101013062 A CN 101013062A CN 200710063160 CN200710063160 CN 200710063160 CN 200710063160 A CN200710063160 A CN 200710063160A CN 101013062 A CN101013062 A CN 101013062A
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Abstract
A folding axis/periscope telescope optical system transmission ratio measurement system includes: 1) light source component, including the light source and modulation wheel; 2) launching unit, including parallel tubes and changeable diaphragm; 3) receiving unit, including integral ball and photomultiplier tube for detecting incident light energy ; 4) control processing unit, including lock phase amplifier, analog-digital conversion circuit, SCM and display; its characteristic is that the launching unit and receiving unit are made to separate structure, and each separate structure can be independently lifted or pitching adjusted to meet the testing requirements of the folding axis telescope optical system transmission ratio; to improve the measurement precision, the system uses two optical paths method, to a certain extent, excluding the signal drift of the light source, detector, high-voltage power supply, amplifier and other components, and after a 100% calibration, it can process measurement in a long time.
Description
Technical field
The present invention relates to a kind of optical instrument transmittance test macro, particularly a kind of doubling axle/dive and hope telescope optical system carry out the system of visible transmission than test belongs to the luminosity measurement technical field.
Background technology
Use always in Gauss's formula telescope optical system and carry out inverted image to prism, telescopic system usually needs to turn back optical axis to reduce the instrument volume during instrument system design, and equipment is taken aim in the sight in the equipments such as tank, submarine must have the prestige function of diving.Multiple situation as described above, its system optical axis is not a straight line, its optical axis is turned back by optical elements such as prism, catoptron, spectroscopes, make the incident light of telescopic system and emergent light not point-blank, occur as yet at present specially at such folding axle/dive and hope telescope optical system carry out the system of transmittance test.This test macro has been realized the folding axle/prestige telescope optical system transmittance of diving test, has filled up the blank of this field tests.
Summary of the invention
The object of the present invention is to provide a kind of axle/latent transmittance test macro of having a look system far away that is used to roll over, this system surveys based on the transmitted light energy, and whole visible-range is all had response.Test macro of the present invention is made the branch body structure with transmitter unit and receiving element, and each minute body structure can independent-lifting or pitching adjustment, satisfy the test request of folding axle telescope optical system transmitance.For improving measuring accuracy, system has adopted the double light path mode, has got rid of the signal drift of parts such as light source, detector, high-voltage power supply, amplifier to a certain extent, can measure in long-time after one time 100% calibration.
According to above-mentioned purpose, folding axle/dive and hope telescope optical system transmittance test macro comprise following ingredient, as shown in Figure 1:
1) light source assembly comprises light source 1 and chopper wheel 2;
2) transmitter unit comprises parallel light tube 6 and interchangeable diaphragm 7;
3) receiving element comprises the integrating sphere 10 and the photomultiplier 11 that are used to survey the incident light energy;
4) controlled processing unit (not shown) comprises lock-in amplifier, analog to digital conversion circuit, single-chip microcomputer and display screen;
It is characterized in that light source assembly also comprises: be used for the emergent light of light source is divided into the spectroscope 4 of two-way, reference optical fiber 5 and the measuring optical fiber 3 that is used to switch the electronic optical gate (not shown) of two-way light and is used for transmitting two paths light;
Wherein, described transmitter unit and receiving element are installed on two pairs of three-dimensional guide rails respectively relatively independently, described controlled processing unit is installed in the rack, and this rack is integral with the three-dimensional guide rail vertical pivot that receiving element is installed, and is installed in jointly on the transverse axis of this three-dimensional guide rail with light source assembly.
Further, receiving element can also comprise the hot spot observer 9 that is positioned at the integrating sphere inlet, with the convenient position of in time adjusting measured piece 8 in measurement.
In addition, emitting module can also be installed in two dimension and rotate on the adjustment rack, and this adjustment rack can rotate around the vertical pivot of three-dimensional guide rail.Can realize the rotation of emitting module, satisfy folding axle/latent test request of having a look system far away in pitching and horizontal direction.Described receiving element also can rotate adjustment rack by one dimension and be installed on the described three-dimensional moving guide rail.
The system works principle:
This system adopts the double light path design, and the light that light source 1 sends is through two light transmitting fibers, and a route measuring fiber 3 emissions collimate after entered integrating sphere 10 by photometry part 8 through parallel light tube 6; Another route reference optical fiber 5 is directly sent into the reference light inlet of integrating sphere 10.Two electronic optical gates are set in the light source 1 carry out the switching of optical system for testing and reference path.At first carry out initialization behind the system boot, guarantee to gather calibration after test light (through parallel light tube) directly enters integrating sphere 10, by the electronic optical gate switching-over light path in the light source 1, reference path is also gathered calibration simultaneously.Afterwards test light is carried out the continuous coverage of monochromatic light road, purpose be for when adjusting this light path, can see in real time can be for reference the result.After the light path adjustment finishes, control electronic optical gate conversion light path, collecting test light path and reference path automatically provide the measurement result of double light path after the processing.Electronic optical gate is owing to adopt circuit control, and the conversion light path only needs the extremely short time, has reduced the influence of light source intensity instability to measuring accuracy.
Adopt chopper wheel the light intensity signal of light source 1 emission be modulated into fixed frequency AC signal, by lock-in amplifier this AC signal is selected to amplify, avoid detecting the environment veiling glare, reduce environmental impact.
As shown in Figure 2, survey by photomultiplier, realize opto-electronic conversion, finish digitizing through lock-in amplifier, A/D change-over circuit then, handle by single-chip microcomputer and calculate back output measurement result, and be presented on the display screen through the light intensity signal of measured piece.
Technique effect of the present invention is: (1) by making the branch body structure to transmitter unit and receiving element, and can the multidimensional adjustment, structurally satisfies folding axle/dive and hope the test request of telescope optical system transmitance; (2) modulate by light source, carry out demodulation, can eliminate the influence of environment veiling glare, improve the transmission measurement precision at receiving element to transmitter unit; (3) use optical fiber to pass light, make light source, reduce influence, improve the transmission measurement precision away from integrating sphere and detector; (4) adopt double light path, reduce the fixed influence of flashing, improve the transmission measurement precision by comparing and measuring.
Description of drawings
Fig. 1 is the structure and the system light path synoptic diagram of test macro of the present invention;
Fig. 2 is a circuit acquisition processing system block diagram;
Fig. 3 is the specific embodiment figure of test macro.
Embodiment
Folding axle/dive and hope telescope optical system transmittance test macro comprise four chief components: light source assembly, transmitter unit, receiving element and controlled processing unit.As shown in Figure 3, transmitter unit 13 comprises light source, chopper wheel, spectroscope and electronic optical gate, after the light of light emitted loads AC signal through chopper wheel, be divided into two-way light by spectroscope, by two optical fiber outputs, electronic optical gate is installed between spectroscope and the optical fiber, and controlled processing unit is realized the conversion of two-way light by this electronic optical gate of control.Controlled processing unit and assembly thereof all are installed in the rack 14, owing to need between controlled processing unit and the power supply module to realize being electrically connected, and also need between receiving element (integrating sphere) 10 and the controlled processing unit to be electrically connected, and also need to connect reference optical fiber between power supply module and the receiving element, therefore, the vertical pivot and the rack 14 that will be used to install the three-dimensional moving guide rail 15 of receiving element 10 are made of one, and rack 14 and transmitter unit 13 are installed on the transverse axis of three-dimensional moving guide rail 15 together.Make the position between light source assembly, controlled processing unit and the receiving element can keep relative fixed like this.
The main body of transmitter unit is a parallel light tube 6, on it beam split diaphragm can be installed.Parallel light tube 6 is installed on the adjustment rack 16, and connects by measuring optical fiber 13 between the transmitter unit 13.Adjustment rack 16 itself is a two-dimentional rotating mechanism, and is installed in rotation on the vertical pivot of three-dimensional moving guide rail 12.Like this, parallel light tube not only can be realized the mobile adjustment of three directions by three-dimensional moving guide rail, can also realize the rotation adjustment of three directions simultaneously by adjustment rack 16.
During test, aim at by the three- dimensional guide rail 12,15 of regulating transmitter unit and receiving element respectively, put into measured piece 8 after, regulate the translation guide rail of receiving element.Because system under test (SUT) is telescopic system, and has a look system far away at folding axle/dive and design, so transmitter unit can be done the adjusting of level and pitch orientation.The integrating sphere 10 of receiving element rotates adjustment rack by an one dimension and is installed on the vertical pivot of three-dimensional moving guide rail 15, can do 45 degree adjustings up and down in pitch orientation, to adapt to different systems under test (SUT).
The major control element of control module adopts single-chip microcomputer, finish the flow process such as setting, keyboard scan, liquid crystal display of signals collecting, data processing, light source driving and state acquisition, lock-in amplifier by software programming, export the result at last and be presented on the display screen.
In order further to understand this test macro, below introduce the use test step of this system:
1, open instrument power source, whether inspection apparatus operate as normal, whether bright dipping of optical fiber, and display panel is lighted;
2, adjust the position of parallel light tube object lens, guarantee the outgoing parallel beam, tighten the object lens gib screw then.Available screen receives, by seeing spot size and illuminance uniformity judgement on the receiving screen;
3, adjust light source base and integrating sphere pedestal respectively, parallel light tube and integrating sphere are alignd in the horizontal direction;
4, adjust integrating sphere and parallel light tube height, parallel light tube and integrating sphere are alignd in vertical direction, and consider the height of measured piece, position, shape etc.;
5, adjust integrating sphere and parallel light tube pitching and beat, make the outgoing light positive go into to inject integrating sphere;
6, repeat 3-5, make the incident of outgoing light positive and be positioned at the integrating sphere center, whether being positioned at the center observes or watches or lift the integrating sphere access hatch here from parallel light tube and watch definite by opening the integrating sphere top cover, normal incidence is to enter the mouth by lean against integrating sphere with one flat plate glass reflector (the front and rear surfaces depth of parallelism is better), and reflected light is determined from quasi-reflection;
7, select suitable parallel light tube outgoing diaphragm according to the entrance pupil of measured piece;
8, start calibration procedure, the electronic shutter action of Single-chip Controlling is finished the output of reference light and test light successively, finishes energy at receiving element and surveys, and the two-way light intensity is compared calibration;
9, between parallel light tube and integrating sphere, put into measured piece, adjust height, horizontal level, pitching, the beat of measured piece, make the light of parallel light tube outgoing all by measured piece and all enter integrating sphere;
10, begin test, the electronic shutter action of Single-chip Controlling is finished the output of reference light and test light successively, finishes energy at receiving element and surveys, and the two-way light intensity is compared test.
11, repeating step 10, can finish repeatedly test, and test result is averaged, can checkout result repeatability and raising precision of test result.
Claims (4)
1, a kind of folding axle/prestige telescope optical system transmittance of diving test macro comprises:
1) light source assembly comprises light source and chopper wheel;
2) transmitter unit comprises parallel light tube and interchangeable diaphragm;
3) receiving element comprises the integrating sphere and the photomultiplier that are used to survey the incident light energy;
4) controlled processing unit comprises lock-in amplifier, analog to digital conversion circuit, single-chip microcomputer and display screen;
It is characterized in that light source assembly also comprises: be used for the emergent light of light source is divided into the spectroscope of two-way, reference optical fiber and the measuring optical fiber that is used to switch the electronic optical gate of two-way light and is used for transmitting two paths light;
Wherein, described transmitter unit and receiving element are installed on two pairs of three-dimensional moving guide rails respectively relatively independently, described controlled processing unit is installed in the rack, and this rack is integral with the three-dimensional guide rail vertical pivot that receiving element is installed, and is installed in jointly on the transverse axis of this three-dimensional guide rail with light source assembly.
2, the folding axle as claimed in claim 1/prestige telescope optical system transmittance of diving test macro is characterized in that described receiving element also comprises the hot spot observer that is positioned at the integrating sphere inlet.
3, the folding axle as claimed in claim 1/prestige telescope optical system transmittance of diving test macro it is characterized in that described emitting module is installed in two dimension and rotates on the adjustment rack, and this adjustment rack can rotate around the vertical pivot of three-dimensional guide rail.
4, the folding axle as claimed in claim 1/prestige telescope optical system transmittance of diving test macro is characterized in that described receiving element rotates adjustment rack by one dimension and is installed on the described three-dimensional moving guide rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100631600A CN100381806C (en) | 2007-01-30 | 2007-01-30 | Transmittance ratio test system for folding-shaft periscopic telescope optical system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100631600A CN100381806C (en) | 2007-01-30 | 2007-01-30 | Transmittance ratio test system for folding-shaft periscopic telescope optical system |
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| CN101013062A true CN101013062A (en) | 2007-08-08 |
| CN100381806C CN100381806C (en) | 2008-04-16 |
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| CNB2007100631600A Expired - Fee Related CN100381806C (en) | 2007-01-30 | 2007-01-30 | Transmittance ratio test system for folding-shaft periscopic telescope optical system |
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| CN102565008A (en) * | 2011-12-28 | 2012-07-11 | 北京奥博泰科技有限公司 | Method and device for measuring transmittance of material by using integrating sphere |
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| CN103528797A (en) * | 2013-10-22 | 2014-01-22 | 长春四叶之义科技有限公司 | Novel system for detecting transmittance and reflectivity of lens of optical system |
| CN107091730A (en) * | 2017-06-08 | 2017-08-25 | 金华职业技术学院 | Estimate the device of absolute light responsiveness of the photomultiplier under low light-intensity conditions |
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| JP3169027B2 (en) * | 1991-12-07 | 2001-05-21 | 株式会社島津製作所 | Optical fiber spectral transmittance measuring device |
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| CN102235974A (en) * | 2010-04-20 | 2011-11-09 | 中国科学院上海硅酸盐研究所 | Device and method for testing full penetration rate of transparent ceramic bulk material |
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| CN102510006A (en) * | 2011-11-21 | 2012-06-20 | 中国科学院半导体研究所 | Optical shutter device for high-power laser |
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| CN102565008B (en) * | 2011-12-28 | 2013-09-11 | 北京奥博泰科技有限公司 | Method and device for measuring transmittance of material by using integrating sphere |
| CN102565008A (en) * | 2011-12-28 | 2012-07-11 | 北京奥博泰科技有限公司 | Method and device for measuring transmittance of material by using integrating sphere |
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