CN104596640A - Optical signal receiver - Google Patents

Abstract

The invention discloses an optical signal receiver, wherein a plurality of light passing parts are arranged on a photoelectric receiving component, the photoelectric receiving component and the light passing parts receive optical signals to be detected, and detection of a plurality of photochromic performances are achieved on a same optical receiving surface; due to the compact design of the light passing parts and the photoelectric receiving component, the measurement errors caused by non-uniform space photochromic distribution can be effectively reduced; in addition, the photoelectric receiving component and a measurement device can mutually calibrate, so that the measurement accuracy is further improved. The optical signal receiver has the characteristics of being compact in structure, high in measurement accuracy and strong in test function, and can be widely applaud to various high precision measurement occasions, particularly various high precision small/miniature/ optical detection test occasions.

Description

A kind of optical signal receiver

[technical field]

The present invention relates to optical radiation field of measuring technique, specifically refer to a kind of optical signal receiver.

[background technology]

Traditional optical signal receiver generally only can realize a kind of measurement function, is needing the application scenario of multiple measurement function, and the multiple receiver of general employing carries out multiple measurement.Existing combination comprises and arranges multiple receiver, and the position between each receiver is not strict with, and only can receive and treat light signal, if publication No. is the patent of CN101290246A; Or have requirement to the position between each receiver, if publication No. is in the patent of CN202676283U, light-receiving mouth and the luminosity probe of spectrometer are set up in parallel, once sampling is measured while can completing spatial light intensity distribution and color distribution; Or each receiver is arranged in same sampler, as publication No. be in the patent of CN103344329A by spectral measurement module and photometric measurement module installation in same sampler.

But, in above-mentioned prior art, each receiver is regardless of set-up mode, different receiver is all independently parts, for high-acruracy survey occasion, each different receiver needs to keep identical test condition, and this is higher to the mechanical requirements of instrument, be comparatively difficult to ensure demonstrate,prove different receiver sampling face even photosurface be consistent, more be difficult to realize that different receiver measures is the light of same nature, thus cause measuring error; In addition, the light source violent for photochromic changes in distribution or photochromic small-scale light sources pockety, as LED lamp bead, larger photochromic difference in distribution can be had under the recognizable low-angle of human eye, there is larger physical dimension difference in separate different receivers, the light signal of different receiver collection inherently has larger difference, comprises spectral composition error, thus bring comparatively big error to measurement result, affect measuring accuracy.

[summary of the invention]

In order to overcome the defect existed in prior art, the present invention aims to provide the novel optical signal receiver of one kind of multiple detecting function integrated setting, the light-receiving mouth of multiple photodetector is arranged on same receive optical face, ensure that the consistance of sampled signal, thus greatly improve measuring accuracy, be applicable to various high-acruracy survey occasion demand; Integrated design, compact conformation are the desired detection schemes of various small-sized and micro-type testing system.

A kind of optical signal receiver of the present invention, is characterized in that, comprises opto-electronic receiver parts, and described opto-electronic receiver parts arrange one or above logical light place, and described opto-electronic receiver parts and logical light place receive and treat light signal.

The present invention arranges some logical light places on opto-electronic receiver parts, while opto-electronic receiver parts receiving optical signals, corresponding optical measuring device is set after some logical light places, realize the measurement for the multiple optical property treating light signal, like this, multiple optical measuring device achieves the measurement for treating light signal on same receive optical face, ensure that the measuring error that the height treating light signal that is sampled unanimously significantly reduces the photochromic skewness in space and brings, thus make the optical signal receiver of this integrated design more can treat the optical color parameter of light signal by Measurement accuracy.

Opto-electronic receiver parts can be photoelectric apparatus, also can be made up of multiple photoelectric apparatus; Logical light place can be that a place leads to light, also can be that many places lead to light, and logical light place can be logical light circular hole, and Tong Guangchu also can be the slit of logical light.Compared with prior art, compact conformation of the present invention, accuracy of measurement are high, test function is powerful, can be widely used in various high-acruracy survey occasion, particularly various high precision small/miniature probing test occasion.

The present invention can be limited by following technical measures and perfect further:

As a kind of technical scheme, described Tong Guangchu is arranged on the center of opto-electronic receiver parts, can reduce the impact of difference on measurement result of two sampling apparatus positions.

As a kind of technical scheme, at least comprise a measurement mechanism, described logical light place is directly the light inlet of corresponding measurement mechanism, measurement mechanism directly receives the light signal from logical light place, light signal directly enters measurement mechanism by logical light place, if measurement mechanism is spectral measurement device, logical light place is directly the light inlet of spectral measurement device, i.e. entrance slit.Or arrange guiding device behind described logical light place, will treat that light signal imports to the light inlet place in corresponding measurement mechanism, light enters into measurement mechanism through light inlet again and measures.

It should be noted that, multiple measurement mechanism can be comprised in the present invention, such as comprise the spectral measurement device of the spectral power distribution for measuring the light signal by logical light place, the brightness measuring device for camera etc. for measurement light source brightness, opto-electronic receiver parts are offered corresponding Tong Guangchu, logical light place is measured treating that light signal imports in different measurement mechanisms respectively, measure while then can realizing same signal, different Photochromic Properties, measuring speed is fast, accuracy is high.

As preferably, described spectral measurement device comprises light-dividing device and detector array, from light inlet until light signal after light-dividing device light splitting, received by detector array.

As preferably, direct plated film on described opto-electronic receiver parts, opto-electronic receiver parts or optical filter is set before opto-electronic receiver parts, to change the spectral response sensitivity curve of photoelectric yield for incident light of opto-electronic receiver parts.A comparatively typical application example is, opto-electronic receiver parts and optical filter composition luminosity probe.

As a kind of technical scheme, comprise microprocessor, described microprocessor is electrically connected or wireless connections with opto-electronic receiver parts and measurement mechanism, described microprocessor carries out correction process to the measuring-signal from measurement mechanism and opto-electronic receiver parts received, and finally obtains the exact value of measurement result.Particularly, if opto-electronic receiver parts are the photosurface of luminosity probe, measurement mechanism is spectral measurement device, and the photometric measurement value that opto-electronic receiver parts record and the spectra measurement of spectral measurement device can correct mutually, improves accuracy of measurement.The spectra measurement recorded such as can be utilized to obtain spectrum resolution correction coefficient, and the spectrum of correct for photometric probe loses matching error, and obtain the luminosity value of pin-point accuracy, concrete aligning step is as follows:

A. microprocessor obtains the light quantity treating light signal that opto-electronic receiver parts are measured;

B. microprocessor obtains the relative spectral power distributions treating light signal that spectral measurement device is measured;

C. spectrum resolution correction coefficient K1 is calculated, according to following formulae discovery:

$K1=\frac{{\∫}_{380}^{780}P{\left(\mathrm{\λ}\right)}_{t}V\left(\mathrm{\λ}\right)\mathrm{d\λ}}{{\∫}_{380}^{780}P{\left(\mathrm{\λ}\right)}_{t}s{\left(\mathrm{\λ}\right)}_{\mathrm{rel}}\mathrm{d\λ}}\·\frac{{\∫}_{380}^{780}P{\left(\mathrm{\λ}\right)}_{s}s{\left(\mathrm{\λ}\right)}_{\mathrm{rel}}\mathrm{d\λ}}{{\∫}_{380}^{780}P{\left(\mathrm{\λ}\right)}_{s}V\left(\mathrm{\λ}\right)\mathrm{d\λ}}$

In formula, V (λ) is known CIE standard spectrum luminous efficiency function, s (λ) _relfor opto-electronic receiver parts are for the relative spectral sensitivity accurately recorded in advance of incident light, P (λ) _sfor the known relative spectral power distributions of the standard sources for calibrating photoelectricity receiving-member, P (λ) _tfor the relative spectral power distributions treating light signal that spectral measurement device records.

D. the light quantity that opto-electronic receiver parts are measured is multiplied by K1, the accurate light quantity treating light signal can be obtained.

In addition, the relative spectral power distributions that the measured value of opto-electronic receiver parts and spectral measurement device also can be utilized to obtain combines, and obtains the absolute light spectral power distributions treating light signal.Specific practice is:

A. microprocessor obtains the relative spectral power distributions treating light signal that spectral measurement device is measured;

B. microprocessor obtains the measured value of opto-electronic receiver parts;

C. the absolute light spectral power distributions treating light signal is calculated:

$P\left(\mathrm{\λ}\right)=P{\left(\mathrm{\λ}\right)}_t\·\frac{S}{{\∫}_{\mathrm{\λ}}P{\left(\mathrm{\λ}\right)}_{t}s\left(\mathrm{\λ}\right)\mathrm{d\λ}}$

In formula, S is the measured value of opto-electronic receiver parts, the spectrum sensitivity that s (λ) is opto-electronic receiver parts.

Mutually correct both realizing, the measurement wave band of described spectral measurement device should be corresponding with the detecting band of opto-electronic receiver parts.Such as, the measurement wavelength band of described spectral measurement device covers the detecting band of opto-electronic receiver parts, then the measured value in whole opto-electronic receiver parts detecting band all can be corrected; If the detecting band of opto-electronic receiver parts is identical with the measurement wave band of spectral measurement device, then the relative spectral power distributions that the shading value of opto-electronic receiver parts and spectral measurement device can be utilized to obtain combines, and obtains the absolute light spectral power distributions treating light signal.

As preferably, described opto-electronic receiver parts are silicon photocell, and opto-electronic receiver parts can be the photosurfaces of the probe such as illumination, brightness.Silicon photocell has the features such as linear dynamic range is wide, efficiency is high, volume is little, lightweight, the life-span is long.

As a typical application scheme, light place is opened at the center of described opto-electronic receiver parts, light face receiving plane is silicon photocell, arrange before silicon photocell and change its optical colour filter for optical signal spectrum response sensitivity curve to be measured (directly on silicon photocell plated film or optical filter is set before it), logical light place is the entrance slit of spectral measurement device, and spectral measurement device comprises for the grating of light splitting and the detector array for receiving spectrum signal.The scheme more optimized is, further integrated microprocessor, and for the treatment of the light signal measured by opto-electronic receiver parts and spectral measurement device, both correct mutually, to obtain more high measurement accuracy.

To sum up, the invention discloses a kind of optical signal receiver, opto-electronic receiver parts arrange some logical light places, opto-electronic receiver parts and logical light place receive and treat light signal, can realize the detection of multiple Photochromic Properties on same receive optical face.The compact design of logical light place and opto-electronic receiver parts, can effectively reduce the measuring error that the photochromic zonation in space comes; In addition, mutually can correct between the different Photochromic Properties measured values under same test condition, improve accuracy of measurement further.This optical signal receiver has the features such as design is ingenious, compact conformation, accuracy of measurement are high, test function is powerful, can be widely used in various high-acruracy survey occasion, particularly various high precision small/miniature probing test occasion.

[accompanying drawing explanation]

Accompanying drawing 1 is the structural representation of embodiment 1;

Accompanying drawing 2 is schematic diagram of opto-electronic receiver parts and logical light place position relationship;

Accompanying drawing 3 is structural representations of embodiment 2.

1-opto-electronic receiver parts, 2-leads to light place, 3-measurement mechanism, 4-light inlet, 5-microprocessor, 6-light-dividing device, 7-detector array, 8-lens.

[embodiment]

Embodiment 1

As depicted in figs. 1 and 2, the opto-electronic receiver parts 1 of optical signal receiver disclosed in the present embodiment are illumination probe, and measurement mechanism 3 is spectrometer, and logical light place 2 is the optical slits of spectrometer, and whole system comprises: illumination probe, spectrometer and microprocessor 5.Wherein, spectrometer comprises light inlet 4, light-dividing device 6 and detector array 7, and the detector array 7 of illumination probe and spectrometer is electrically connected with microprocessor 5.

During measurement, treat that light signal is radiated on optical signal receiver, part light signal enters spectrometer 4 by optical slits 2, light after grating beam splitting is irradiated on detector array 7, light signal is converted to electric signal and sends microprocessor 5 to by detector array 7, obtains by the spectral power distribution of light-metering 3 through microprocessor 5 process.Meanwhile, light signal, by illumination probe acquires, is converted to electric signal and sends microprocessor 5 to by another part light signal, obtains through microprocessor 5 process the amount of illumination treating light signal.First the amount of illumination obtained combines with relative spectral power distributions by microprocessor 5, obtains the absolute light spectral power distributions treating light signal, and then corrects the brightness value in measured zone by calculating correction coefficient.According to following formulae discovery spectrum resolution correction coefficient K1:

$K1=\frac{{\∫}_{380}^{780}P{\left(\mathrm{\λ}\right)}_{t}V\left(\mathrm{\λ}\right)\mathrm{d\λ}}{{\∫}_{380}^{780}P{\left(\mathrm{\λ}\right)}_{t}s{\left(\mathrm{\λ}\right)}_{\mathrm{rel}}\mathrm{d\λ}}\·\frac{{\∫}_{380}^{780}P{\left(\mathrm{\λ}\right)}_{s}s{\left(\mathrm{\λ}\right)}_{\mathrm{rel}}\mathrm{d\λ}}{{\∫}_{380}^{780}P{\left(\mathrm{\λ}\right)}_{s}V\left(\mathrm{\λ}\right)\mathrm{d\λ}}$

In formula, V (λ) is known CIE standard spectrum luminous efficiency function, S (λ) _relfor the relative spectral sensitivity that illumination probe has accurately recorded in advance, P (λ) _sfor the known relative spectral power distributions of the standard sources for calibrating illumination probe, P (λ) _tfor the relative spectral power distributions treating light signal recorded.

The amount of illumination recorded of illumination being popped one's head in is multiplied by K1, can obtain the exact luminance amount treating light signal.

Embodiment 2

As shown in Figure 3, the present embodiment and embodiment 1 difference are that opto-electronic receiver parts 1 are brightness probe, and the optical slits of spectrometer is close to logical light place 2 and is arranged, before brightness probe, arrange lens 8.

During measurement, tested light transmission lens 8 are irradiated on optical signal receiver, enter spectrometer by the light signal at logical light place 2 through optical slits.

Claims (13)

1. an optical signal receiver, it is characterized in that, comprise opto-electronic receiver parts (1), described opto-electronic receiver parts (1) arrange logical light place (2), and described opto-electronic receiver parts (1) and logical light place (2) receive and treat light signal.

2. optical signal receiver as claimed in claim 1, it is characterized in that, described Tong Guangchu (2) is arranged on the center of opto-electronic receiver parts (1).

3. optical signal receiver as claimed in claim 1, it is characterized in that, comprise measurement mechanism (3), described Tong Guangchu (2) is directly the light inlet (4) of corresponding measurement mechanism (3), and measurement mechanism (3) directly receives the light signal from Tong Guangchu (2); Or described Tong Guangchu (2) establishes guiding device, guiding device will treat that light signal imports to light inlet (4) place in corresponding measurement mechanism (3).

4. optical signal receiver as claimed in claim 3, it is characterized in that, described measurement mechanism (3) is spectral measurement device.

5. optical signal receiver as claimed in claim 4, it is characterized in that, described spectral measurement device records the relative spectral power distributions treating light signal, correct according to the measured value of measured relative spectral power distributions to opto-electronic receiver parts (1), obtain accurate measurement result.

6. optical signal receiver as claimed in claim 4, it is characterized in that, the measured value of described opto-electronic receiver parts (1) corrects the relative spectral power distributions that spectral measurement device records, and obtains the absolute light spectral power distributions treating light signal.

7. the optical signal receiver as described in claim 1 or 5 or 6, it is characterized in that, comprise microprocessor (5), described microprocessor (5) carries out correction process to what receive from measurement mechanism (3) and the measuring-signal of opto-electronic receiver parts (1).

8. the optical signal receiver as described in claim 1 or 5 or 6, is characterized in that, the measurement wave band of described spectral measurement device is corresponding with the detecting band of opto-electronic receiver parts (1).

9. optical signal receiver as claimed in claim 8, is characterized in that, the measurement wave band of described spectral measurement device covers the detecting band of opto-electronic receiver parts (1).

10. optical signal receiver as claimed in claim 4, it is characterized in that, described spectral measurement device comprises light inlet (4), light-dividing device (6) and detector array (7), from light inlet (4) until light signal after light-dividing device (6) light splitting, received by detector array (7).

11. optical signal receivers as claimed in claim 10, is characterized in that, described Tong Guangchu (2) is directly the light inlet (4) of spectral measurement device, and the entrance slit that light inlet (4) is spectral measurement device.

12. optical signal receivers as described in claim 1 or 5 or 6, it is characterized in that, described opto-electronic receiver parts (1) are silicon photocell.

13. optical signal receivers as claimed in claim 1, is characterized in that, at the upper direct plated film of described opto-electronic receiver parts (1), or arrange optical filter in the front of described opto-electronic receiver parts (1).