CN104359866B - A kind of retro-reflection measurement apparatus - Google Patents
A kind of retro-reflection measurement apparatus Download PDFInfo
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- CN104359866B CN104359866B CN201410679212.7A CN201410679212A CN104359866B CN 104359866 B CN104359866 B CN 104359866B CN 201410679212 A CN201410679212 A CN 201410679212A CN 104359866 B CN104359866 B CN 104359866B
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Abstract
The invention discloses a kind of retro-reflection measurement apparatus, include the sampling apparatus of diaphragm and speculum with holes using one or the above, and one or the above measurement apparatus corresponding with sampling apparatus quantity, one-shot measurement can realize the measurement of retro-reflection characteristic under multiple different view angles simultaneously, by flexibly selecting the size of diaphragm and speculum with holes, it is applicable to various view angles and measures the accurate adjustable of annulus size；Without other middle devices, the annulus optical signal of realization improves accuracy of measurement without missing；The various colour filters of flexibly configurable, monitoring device etc. are gone back simultaneously, realize diversified measurement function, have the characteristics that measuring speed is fast, the degree of accuracy is high, small volume, applied widely, powerful and design integration, can be widely applied to the various occasions such as laboratory, industrial producing line and on-site rapid measurement.
Description
【Technical field】
The invention belongs to optical radiation measurement field, and in particular to a kind of retro-reflection characteristic measuring device.
【Background technology】
Emitting retroreflective material is mainly used in the traffic safety alarms such as road traffic mark, graticule, various sight line inducing installations
Mark field, play an important roll to the operation that ensures traffic safety, retro-reflection characteristic is that to evaluate such material most effective and most
Direct means.The measurement request illumination angle of retro-reflection characteristic and view angle meet specific condition, because angle is very small,
Want precise control of angular degree to generally require very big measurement distance in actually measuring, and need to carry out in very big darkroom,
Its application in actual measurement of engineering is significantly limit, also the degree of accuracy to instrument test result and reliability propose for this
Very high requirement.In addition, in industrial producing line and on-site rapid measurement, except require to realize as far as possible within less space compared with
Outside big measurement distance, the measurement of retro-reflection characteristic is typically realized using the annulus optical signal for meeting condition of lighting and observation
Condition.
Notification number is that the B2 of US 7961328 patent discloses a kind of multi-angle retro-reflection measurement apparatus, and it passes through ring
Band light transmission device is engaged with annulus minute surface, can realize the measurement of viewing angle corresponding to two different measurement annulus simultaneously.The skill
, it is necessary to which multiple support meanss carry out support ring band light transmission device in art scheme, the introducing of multiple support meanss can cause annulus light to believe
Number it is imperfect, influence accuracy of measurement；In addition the fixation of support meanss is there is also unstable risk, so as to reduce device
The reliability and accuracy of test；And annulus light transmission device is limited and needed in light path using beam splitter or small-sized anti-
Mirror is penetrated, beam splitter can produce larger optical energy loss, and refracting process can also introduce measurement error, small-sized speculum
It is processed and fixation is all relatively difficult, can also be introduced and be produced larger error.
【The content of the invention】
In view of the shortcomings of the prior art, the present invention is intended to provide a kind of quick, accurate, applied widely portable reply
Reflecting measurement device, it is only necessary to one-shot measurement, you can while realize the quick, accurate of retro-reflection characteristic under multigroup different viewing angles
Measurement, has the characteristics that small volume, light path are simple, accuracy of measurement is high, speed is fast, easy to operate, cost is low.
What the present invention was achieved through the following technical solutions：A kind of retro-reflection measurement apparatus, it is characterised in that including light
Source, one group or the implementation above difference range of view angles measurement sampling apparatus of annulus and corresponding with sampling apparatus quantity
One or above measurement apparatus.Described sampling apparatus is made up of speculum with holes and diaphragm；The light that light source is sent with
Certain illumination angle is incided on sample, and the retro-reflection light of sample is adopted via what speculum with holes and diaphragm formed
Formed after sampling device and meet the annulus optical signal of observation corner condition, received by corresponding measurement apparatus.
The measurement of retro-reflection characteristic include illumination path and observation two light paths of light path, light source send irradiation light and by
It is illumination path that the light path on sample is incided according to certain illumination angle, and the retro-reflection light that sample is sent is tested
It is observation light path to measure the light path that device receives.In the present invention, the light that light source is sent is irradiated on sample, diaphragm and with holes
Speculum group into sampling apparatus be arranged in the light path before sample and measurement apparatus, the retro-reflection of sample
Light is received by sampling apparatus by corresponding measurement apparatus；Diaphragm and with holes speculum of the every group of sampling apparatus by certain size
Combine, every group of diaphragm and corresponding one of speculum with holes determine measurement annulus corresponding to viewing angle, thus measurement apparatus connects
What is received is the annulus optical signal of sample retro-reflection light, and then completes the measurement of the retro-reflection under the view angle.With
This analogizes, and sampling apparatus of the invention can realize multigroup various sizes of measurement annulus, the retro-reflection light of sample according to
The secondary measurement annulus by under different viewing angles, once sampling can complete the retro-reflection measurement of multiple different viewing angles.Phase
Than in existing retro reflecting device, the present invention proposes a kind of novel retro-reflection measurement scheme, it introduce by diaphragm and
Speculum group with holes into sampling apparatus, light path design is simple, ingenious, without support meanss, can obtain complete retro-reflection
Annulus optical signal, accuracy of measurement is high, stability is good；Light path autgmentability is strong, can set according to testing requirement and meet different observations
Multiple sampling apparatuses at angle, once sampling can complete the retro-reflection characteristic survey of the annulus optical signal under multiple different viewing angles
Amount；In addition by ingenious setting light path, the illumination path from light source to sample is made, from sample to sampling apparatus and survey
The optical path of amount device is not interfere with each other, it is only necessary to starts light source and measurement purpose can be achieved；In addition, sampling apparatus manufacturing process is simple
It is single and easy to install, have the characteristics that cost is low, veiling glare is low, easy to operate.
The present invention can also be limited further and perfect by the following technical programs：
In the present invention, the speculum with holes in described sampling apparatus is used for the light for reflecting greater than measurement annulus internal diameter,
Diaphragm is used to end the light for being more than measurement annulus external diameter, and speculum and diaphragm combination with holes forms measurement annulus, passes through one
Sampling apparatus is the measurement annulus that can determine that a range of view angles.For example, the survey to obtain (α ± Δ α) under α viewing angles
Annulus is measured, the aperture size of the speculum with holes in sampling apparatus be (α-Δ α) to the subtended angle at sample center, its reflection
Beam angle is more than the light of (α-Δ α)；And subtended angle corresponding to the aperture size of diaphragm is (α+Δ α) in sampling apparatus, only subtended angle
Light beam less than (α+Δ α) can pass through diaphragm, then after the combination of speculum with holes and diaphragm, what measurement apparatus received is light
Annulus optical signal of the beam angle scope in (α-Δ α)~(α+Δ α).
As a kind of technical scheme, described speculum and diaphragm with holes are centrally disposed on optical axis, precisely to realize
Measurement annulus corresponding to different view angles.For example, if optical axis is deviateed at the center of speculum with holes and diaphragm, speculum with holes
Aperture size is β to the subtended angle at sample center, and that positioned at optical axis both sides subtended angle is respectively (β+Δ β) and (β-Δ β), is located at
Optical axis top；Aperture of the diaphragm center is γ (γ to the size of the subtended angle at sample center<β), positioned at optical axis both sides subtended angle
Respectively (γ+Δ γ) and (γ-Δ γ), positioned at optical axis bottom；Then speculum and diaphragm with holes combine to form one irregularly
Light-emitting zone, measurement annulus can not be formed, so that measurement request can not be met.
As a kind of technical scheme, including a sampling apparatus, the speculum and diaphragm with holes of described sampling apparatus are set
Put in the light path before measurement apparatus.Limitation of the sampled device to light beam, it is met the light beam of range of view angles, quilt
Measurement apparatus corresponding to follow-up receives and measurement, completes the feature measurement to a viewing angle retro-reflection.
As a kind of technical scheme, including two and more than two sampling apparatuses, the band of described latter sampling apparatus
Hole speculum is along in the light path observed before light path is arranged on the diaphragm of previous sampling apparatus.Wherein with realize θ and
Exemplified by the sampling apparatus of two view angles, the light through sample retro-reflection incides θ observation angular measurement annulus sampling cartridges
On the speculum with holes put, light beam of the beam angle more than (θ-Δ θ) is reflexed to φ observation angular measurement annulus by speculum with holes
At the speculum with holes of sampling apparatus, wherein beam angle is less thanLight beam pass through diaphragm, θ observation angular measurement annulus is adopted
Diaphragm cutoff beam angle in sampling device is more than the light beam of (θ+Δ θ), i.e. light beam in θ observation angular measurement annulus by and it is rear
Measurement apparatus corresponding to continuous receives and measurement；Beam angle is more thanLight beam be reflected ontoObservation angular measurement annulus is adopted
Diaphragm in sampling device,The diaphragm cutoff beam angle observed in the sampling apparatus of angular measurement annulus is more thanLight beam,
I.e.The light beam in angular measurement annulus is observed to receive and measure by and by follow-up corresponding measurement apparatus.So far realization pair simultaneously
The measurement of multiple angle retro-reflections.
As a kind of technical scheme, described different measurement annulus are set gradually from small to large along observation light path.With θ andExemplified by measurement annulus corresponding to two different viewing angles, the sampling apparatus edge observation light of θ observation angular measurement annulus is obtained
Road is arranged onIn light path before the sampling apparatus of observation angular measurement annulus.θ is that previous sampling apparatus obtains θ range of view angles
Measurement annulus,I.e. latter sampling apparatus obtainsThe measurement annulus of range of view angles, it can not only realize to multiple viewing angles
Retro-reflection measurement, be also remarkably improved the utilization rate and testing efficiency of light path.
Preferably, view angle corresponding to above-mentioned measurement annulus is 0.2 ° or 0.33 ° or 0.5 °, to meet international state at present
Interior actual measurement demand.It is pointed out that the size by flexibly choosing speculum and diaphragm with holes, the present invention can be simultaneously
The measurement annulus under multiple view angles is realized, meets different testing requirements, scalability and universality are good.
As a kind of technical scheme, include the colour filter of one or the above, described colour filter set observation light path and/
Or in illumination path, the retro-reflection light of sample is measured device and received, i.e., measurement apparatus receives after colour filter
Annulus optical signal after the effect of corresponding colour filter, it is different according to the species of selected colour filter, and surveyed with corresponding
Amount device is engaged, and the measurement of sample difference reflection characteristic can be achieved.For example, the transmitance simulation of described colour filter
CIE luminosity functions V (λ), is engaged with measurement apparatus, you can realizes the measurement of various light quantities.In addition, in above-mentioned setting colour filter
The opening position of piece, color filter wheel is may also include, the colour filter of one or the above is set on described color filter wheel, will by color filter wheel
Different colour filters are switched in light path, and measurement apparatus receives the annulus optical signal by corresponding colour filter, realizes same
Under view angle, the measurement of different optical characteristics, colour filter here may be provided in observation light path, may also be arranged on illumination path
In.
It may include one or more sampling apparatus in the retro reflecting device of the present invention.When including a sampling apparatus
When, colour filter may be provided at measurement apparatus before, any position of observation light path, may act on the ring of sampling apparatus realization
Band optical signal.When including multiple sampling apparatuses, above-mentioned observation light path measures the independent observation of annulus for one or more
Light path observes light path jointly, and observation light path includes the common observation light path of two or more measurement annulus and each measurement
Independent observation light path corresponding to annulus, described common observation light path for latter sampling apparatus speculum with holes before and comprising
The transmission light path of difference measurement annulus optical signal, such as light path A, B and C in Fig. 3, wherein A and B light paths include three measurement annulus
Optical signal, light path C include the optical signal of latter two measurement annulus；The independent observation light path of described previous sampling apparatus is latter
After the speculum with holes of sampling apparatus and positioned at the light path where the light by the speculum aperture with holes.
Described colour filter is arranged in common observation light path or independent observation light path.Light path D, E specific to Fig. 4 and
Colour filter corresponding to F can also be provided in common observation light path.Colour filter is arranged in common observation light path, realizes retro-reflection
The measurement of light same optical properties under each different view angles, for example, in A or B light paths, simulation CIE is set depending on seeing
Function V (λ) colour filter, then the measurement of three measurement annulus optical signal light quantities can be achieved；If above-mentioned colour filter is arranged on light
, then can be to the measurement of latter two measurement annulus optical signal light quantity in the C of road.Colour filter can also be separately positioned on independent observation light path
In, the light-filtering characteristic of each colour filter can be identical or different, but colour filter corresponding to previous measurement apparatus must be arranged on and pass through
In light path corresponding to latter measurement device where the light of speculum aperture with holes, retro-reflection light that sample is sent
Line, the speculum with holes through latter measurement device are divided into two parts, and a part is the light by aperture, and another part is by band
The light of hole speculum reflection.Colour filter is just set by the light path where the light of aperture, being provided with the part light path
The setting order of diaphragm, colour filter and the measurement apparatus of previous measurement apparatus, wherein diaphragm and colour filter can arbitrarily be set, both
Before must being only arranged on measurement apparatus, it is measured device by the measurement annulus of colour filter and diaphragm and receives, measurement apparatus
Receive the annulus optical signal after filtered effect；The light that another part is reflected by speculum with holes passes through latter light again
Door screen, colour filter, annulus optical signal corresponding to formation is received by latter measurement device, detection.In addition, in above-mentioned setting colour filter
Corresponding position, the also settable color filter wheel for placing multiple colour filters, so as to may be implemented under same view angle, difference is replied
The measurement of reflection characteristic, for example, measurement apparatus is black-white CCD, three colour filters can be set on color filter wheel, three colour filters
It is CIE tristimulus values curve x (λ), y (λ) and z (λ) with the response of the combination spectrum of black-white CCD, band of the color filter wheel in drive device
Under dynamic, you can realize the measurement of retro-reflection light tristimulus values；If colour filter is simulation CIE differences vision (photopic vision, scotopia
Feel, mesopic vision) under spectral luminous efficiency function, then can obtain luminosity value of the retro-reflection light under different visions.
As a kind of technical scheme, described light source includes the different monochromatic LEDs of one or the program-controlled driving of the above, institute
One stated either above monochromatic LED independence or illuminated in combination, are directly or indirectly irradiated on sample.In the present invention
Light source have a variety of implementations, it can be the LED array for including multiple different monochromatic LEDs, under the control of stored program controlled,
Each different monochromatic LEDs in LED array are independent or combine the light sent, shine directly on sample, to realize
The measurement of the retro-reflection characteristic of sample under different radiation sources；It may also include integrating sphere, one or above monochromatic LED
After the integrated ball mixed light of light that independent or combination is sent, it is irradiated on sample, multiple different monochromatic LEDs can also be with product
Bulb separation is engaged, and because the beam angle that LED lights is narrower, the uniformity of luminous intensity of light source outgoing can not ensure, particularly pair
In multiple monochromatic LED mixed lights, the effect of direct mixed light is poor, and each different monochromatic LEDs are arranged on integrating sphere, its it is independent or
After the integrated ball mixed light of light that sends of person's combination, then be irradiated on sample, the mode of this indirect irradiation can ensure that by
The irradiation light that test sample product receive is uniform, avoids due to the measurement error of the uneven introducing of irradiation light.It is in addition, other
The other light sources used in retro-reflection measurement apparatus can also be used in the present invention.Here monochromatic LED type of drive also can spirit
Selection living, it is preferred to use the mode of pulsed drive, by phase lock amplifying technology, effectively remove veiling glare, improve measurement accuracy, together
When follow-up signal processing it is more simple, improve testing efficiency.
In addition, the devices such as collimator apparatus, diaphragm and feature colour filter can also be set in illumination path.E.g., including
Collimator apparatus, described collimator apparatus are arranged in the light path after light source；Or it is arranged on standard including diaphragm, described diaphragm
In light path after straight device, collimator apparatus is coordinated to be used to produce the illuminating bundle for meeting to require；Also include feature colour filter, institute
The feature colour filter stated is arranged in the light path after diaphragm, for correcting the spectrum of light source.
As a kind of technical scheme, described measurement apparatus is photometric detector or spectral radiance counter device, different surveys
Amount device can meet different testing requirements, realize the quick measurement to sample luminosity, colourity and spectrum.
As a kind of technical scheme, include the speculum of one and the above, described speculum be arranged on illumination path and/
Or in observation light path, reduce operating distance in the case where ensureing measurement distance, reduce equipment instrument.It is pointed out that light
Multiple speculums can be used to reduce operating distance in road, beneficial to instrument miniaturization.But the contracting of the pursuit operating distance of blindness
Small and excessive can be caused because of multiple reflections using speculum so that original optical signal loses, and then influences follow-up retro-reflection
The signal testing of measurement apparatus receives in journey, produces significant error, thus should suitably select the quantity of speculum, such as can be excellent
Choosing sets two speculums in the optical path.
As a kind of technical scheme, including to monitor the monitoring device of light source fluctuation, described monitoring device, which receives, to be come
The light sent from light source.The position of monitoring device can flexibly be set, and such as be may be provided at the side of light source or be arranged on illumination
In the side light path of light path.In the present invention, monitoring device can be selected flexibly, meet different testing requirements, and monitoring device can be
Spectral radiometer either photodetector or brightness measuring device for camera, monitoring device are preferably spectral radiometer, measurement apparatus and
The metrical information of monitoring device is consistent, and both measurement results can be made full use of to obtain the reflectivity of sample, spectral reflectance
Comprehensive luminosity, colourity and the spectrum value such as rate and the coefficient of luminous intensity.
Preferably, including cabinet, light source above, sampling apparatus, colour filter, color filter wheel, measurement apparatus, monitoring device
It is arranged in cabinet, it is integration degree height, design integration, easy to operate.In addition, cabinet may also include man-machine interaction dress
Put, described human-computer interaction device includes touch screen displays, touch screen control unit and microprocessor, to Intelligent treatment and survey
Try data, real-time display test mode and test result.
In summary, the present invention includes the sampling apparatus of diaphragm and speculum with holes, Yi Jiyu using one or the above
Sampling apparatus quantity corresponding one or above measurement apparatus, one-shot measurement can realize multiple different view angles simultaneously
The measurement of lower retro-reflection characteristic, by flexibly selecting the size of diaphragm and speculum with holes, various view angles are applicable to, and
The accurate adjustable of annulus size is measured, it is applied widely；Without other middle devices, the annulus optical signal of realization enters without missing
One step improves accuracy of measurement；The various colour filters of flexibly configurable, monitoring device etc. are gone back simultaneously, realize diversified measurement work(
Can, have the characteristics that measuring speed is fast, the degree of accuracy is high, small volume, applied widely, powerful and design integration.Can be wide
It is general to apply to the various occasions such as laboratory, industrial producing line and on-site rapid measurement.
【Brief description of the drawings】
Accompanying drawing 1 is the schematic diagram of embodiment 1；
Accompanying drawing 2 is the schematic diagram of embodiment 2；
Accompanying drawing 3 is the schematic diagram of embodiment 3；
Accompanying drawing 4 is the schematic diagram that colour filter is set on the color filter wheel of embodiment 3；
Accompanying drawing 5 is the light source schematic diagram of embodiment 4.
1- light sources；2- sampling apparatuses；21- speculums with holes；22- diaphragms；3- measurement apparatus；4- samples；5- is integrated
Ball；6- colour filters；7- color filter wheels；8- monitoring devices；9- speculums；10- cabinets；11- monochromatic LEDs；12- drive devices.
【Embodiment】
Embodiment 1
As shown in figure 1, a kind of retro-reflection measurement apparatus for measuring single viewing angle is disclosed in the present embodiment, including light
Source 1, sampling apparatus 2, measurement apparatus 3 and sample 4, sampling apparatus 2 is by a speculum 21 with holes and 22 groups of a diaphragm
Into the center of speculum 21 and diaphragm 22 with holes is respectively positioned on optical axis, light source 1, speculum with holes 2, sample 4, diaphragm 22
Set gradually in the optical path with measurement apparatus 3.
The present embodiment realizes the retro-reflection feature measurement of 0.2 ° of ± 0.05 ° of measurement annulus corresponding to 0.2 ° of view angle, light
The light beam that source 1 is sent is directly incident on the surface of sample 4 through speculum 21 with holes, via the retro-reflection of sample 4
Light reflexes to speculum 21 with holes, and wherein light of the beam angle more than 0.15 ° reaches diaphragm 22 along observation light path, and beam angle exists
Light in 0.25 ° is by diaphragm 22, so as to form 0.2 ° ± 0.05 ° of annulus optical signal, the survey being placed on after diaphragm 22
Amount device 3 receives, and completes the retro-reflection measurement under 0.2 ° of viewing angle.
The present embodiment light path is simple, ingenious, without setting support meanss, can completely realize 0.2 ° of ± 0.05 ° of annulus light letter
Number measurement, accuracy of measurement is high, and system architecture is simple, compact, and easy to operate, test speed is fast, suitable for industrial producing line
And on-site rapid measurement.
Embodiment 2
As shown in Fig. 2 the present embodiment includes light source 1, sampling apparatus 2, measurement apparatus 3, monitoring device 8, speculum 9, machine
Case 10, speculum 9 are arranged in the light path between light source 1 and sample 4, light source 1, sampling apparatus 2, test device 3, monitoring
Device 8, speculum 9 are arranged in cabinet 10.As different from Example 1, illumination path and indirect arrived in the present embodiment
Up to the surface of sample 4, but pass through the reflexing to twice up to the surface of sample 4 of two speculums 91,92, realize instrument
The requirement of device miniaturization；In addition by setting three groups of sampling apparatuses 2 (211 and 221,212 and 222,213 and 223), realize simultaneously
Annulus optical signal under three viewing angles is measured.
Corresponding view angle is followed successively by 0.2 °, 0.33 °, 0.5 ° respectively for three groups of sampling apparatuses in the present embodiment, corresponding
Annulus optical signal is respectively 0.2 ° ± 0.05 °, 0.33 ° ± 0.05 °, 0.5 ° ± 0.05 °；It is in light path is observed, successively from small
Set to big, along the speculum with holes 21 of the latter sampling apparatus 2 of observation light path be arranged on previous sampling apparatus 2 diaphragm 22 it
In preceding light path, i.e., the speculum with holes 212 of second group sampling apparatus is arranged on before the diaphragm 221 of first group of sampling apparatus,
The speculum with holes 213 of 3rd group of sampling apparatus is arranged on before the diaphragm 222 of second group of sampling apparatus.
During measurement, the light that light source 1 is sent passes through speculum 211 with holes, along illumination path through speculum 91, speculum 92
It is irradiated to the surface of sample 4 after two secondary reflections, the retro-reflection light of sample 4 is back to holes anti-along illumination path
Mirror 211 is penetrated, the reflected light beam angle of speculum 211 with holes is more than 0.15 ° of light beam, and the segment beam reflexes to next along observation light path
At speculum 212 with holes, a part of light sequentially passes through the speculum with holes 212 and aperture size that aperture size is 0.28 °
For 0.25 ° of diaphragm 221, the cutoff beam angle of diaphragm 221 is more than 0.25 ° of light beam, thus measurement apparatus 31 receive 0.15 °~
0.25 ° of annulus optical signal；Light beam of another part beam angle more than 0.28 ° is reflected by speculum 222 with holes, along observation light path
Reflex at speculum 213 with holes, a part of light sequentially passes through the speculum with holes 213 that aperture size is 0.45 °, Yi Jikong
Footpath size is 0.38 ° of diaphragm 222, and the cutoff beam angle of diaphragm 222 is more than 0.38 ° of light beam, measurement apparatus 32 receive 0.28 °~
0.38 ° of annulus optical signal；Light beam of another part beam angle more than 0.45 ° reflexes to diaphragm 223 by speculum 213 with holes
Place, diaphragm 223 are used for the light beam that cutoff beam angle is more than 0.55 °, and measurement apparatus 33 receives 0.45 °~0.55 ° of annulus light letter
Number.Pass through one-shot measurement, you can met the annulus optical signal measurement of three viewing angles simultaneously, test consumption can be greatly lowered
When, testing efficiency is improved, has the characteristics that measuring speed is fast, the degree of accuracy is high and easy to operate.
The present embodiment also includes the monitoring device 8 for being arranged on the side of light source 1, to receive the light sent from light source 1.
Measurement apparatus 3 and monitoring device 8 in the present embodiment are spectral radiometer, and both metrical informations are consistent, can make full use of two
The measurement result of person obtains comprehensive luminosity, the colourity such as reflectivity, spectral reflectivity and the coefficient of luminous intensity of sample
With spectrum value.
Embodiment 3
As shown in figure 3, as different from Example 2, the present embodiment includes colour filter 6, colour filter 6 is arranged on second group and adopted
In light path after the speculum with holes 212 of sampling device, before the speculum with holes 213 of the 3rd group of sampling apparatus, that is, it is arranged on
In the common observation light path C of second group of sampling apparatus and the 3rd group of sampling apparatus；Measurement apparatus 32 and measurement apparatus 33 are to visit
Device is surveyed, colour filter 6 is CIE human eye spectral luminous efficiency function V (λ), because the colour filter 6 is arranged in common observation light path C,
What measurement apparatus 32 and measurement apparatus 33 received is the light after the colour filter 6 effect, i.e. measurement apparatus 32 and measurement fills
Put the shading value of the different view angles of 33 acquisitions.
The present embodiment also includes color filter wheel 7, and color filter wheel 7 is arranged on the diaphragm 221 and measurement apparatus of first group of sampling apparatus 2
In light path before 31, that is, it is arranged in the independent observation light path D of first group of sampling apparatus 2.As shown in figure 4, on colour filter 7
4 colour filters 6 are set, and measurement apparatus 31 is black-white CCD, wherein the combination spectrum of three colour filters and black-white CCD response difference
For CIE tristimulus curve x (λ), y (λ) and z (λ), color filter wheel 7 is under the drive of drive device, you can realizes retro-reflection light
The measurement of tristimulus values；The combination spectrum of another colour filter and black-white CCD mutually should be CIE human eye spectral luminous efficiency functions
V (λ), luminosity value of the retro-reflection light under photopic vision can be obtained.
Embodiment 4
Different from above-described embodiment, the present embodiment includes integrating sphere 5, and 4 monochromes are set on the ball wall of integrating sphere 5
LED11, by each monochromatic LED 11 with being connected program control driving device 12, program control driving device 12 controls each monochromatic LED 11
Driven by way of pulsed drive and illuminated in combination controls, one either above monochromatic LED is independent or combination is sent
The integrated mixed light of ball 5 of light after, be irradiated on sample 4, it is ensured that the irradiation light that sample 4 receives is uniform, keeps away
Exempt from due to the measurement error of the uneven introducing of irradiation light.
Claims (13)
1. a kind of retro-reflection measurement apparatus, it is characterised in that including the different measurement rings of light source (1), one group or implementation above
The sampling apparatus (2) of band and one corresponding with sampling apparatus (2) quantity or above measurement apparatus (3), described adopts
Sampling device (2) is made up of speculum with holes (21) and diaphragm (22), wherein speculum with holes (21) is reflected greater than in measurement annulus
The light in footpath, diaphragm (22) cut-off are more than the light of measurement annulus external diameter, described speculum with holes (21) and diaphragm (22) group
Close and form measurement annulus；The light that light source (1) is sent is incided on sample (4) with certain illumination angle, sample (4)
Retro-reflection light forms the annulus optical signal, corresponding for meeting observation corner condition after speculum with holes (21) and diaphragm (22)
Measurement apparatus (3) receive, described measurement apparatus (3) is photometric detector or spectral radiometer.
2. retro-reflection measurement apparatus as claimed in claim 1, it is characterised in that described speculum with holes (21) and diaphragm
(22) it is centrally located on optical axis.
3. retro-reflection measurement apparatus as claimed in claim 1, it is characterised in that including two or more sampling apparatus (2), edge
The speculum with holes (21) for observing the latter sampling apparatus (2) of light path is arranged on before the diaphragm (22) of previous sampling apparatus (2)
Light path on.
4. retro-reflection measurement apparatus as claimed in claim 1, it is characterised in that in light path is observed, described different surveys
Amount annulus is set gradually from small to large.
5. retro-reflection measurement apparatus as claimed in claim 4, it is characterised in that view angle corresponding to described measurement annulus
For 0.2 ° or 0.33 ° or 0.5 °.
6. retro-reflection measurement apparatus as claimed in claim 1, it is characterised in that described light source (1) include one or
The different monochromatic LEDs (11) of program-controlled driving above, described one either above monochromatic LED (11) is independent or combination is sent out
Light, directly or indirectly it is irradiated on sample (4).
7. retro-reflection measurement apparatus as claimed in claim 6, it is characterised in that described monochromatic LED (11) uses pulse
Mode drives.
8. retro-reflection measurement apparatus as claimed in claim 6, it is characterised in that including integrating sphere (5), one or more than
After the integrated ball of light (5) mixed light that monochromatic LED (11) independence or combination are sent, it is irradiated on sample (4).
9. retro-reflection measurement apparatus as claimed in claim 1, it is characterised in that the colour filter including one or the above
(6), described colour filter (6) is arranged in observation light path and/or illumination path, and measurement apparatus (3) is received through corresponding colour filter
Annulus optical signal after piece (6) effect.
10. retro-reflection measurement apparatus as claimed in claim 9, it is characterised in that including color filter wheel (7), described colour filter
The colour filter (6) of one or the above is set on disk (7), different colour filters (6) is switched to by light path by color filter wheel (7)
In, measurement apparatus (3) receives the annulus optical signal by corresponding colour filter (6).
11. retro-reflection measurement apparatus as claimed in claim 9, it is characterised in that described observation light path include two with
Independent observation light path corresponding to the common observation light path of upper measurement annulus and each measurement annulus, described colour filter (6) are set
Put in observation light path jointly or independent observation light path.
12. retro-reflection measurement apparatus as claimed in claim 1, it is characterised in that including what is fluctuated to monitor light source (1)
Monitoring device (8), described monitoring device (8) receive the light sent from light source (1).
13. retro-reflection measurement apparatus as claimed in claim 1, it is characterised in that the speculum including one and the above
(9), described speculum (9) is arranged in illumination path and/or observation light path.
Priority Applications (3)
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| CN201410679212.7A CN104359866B (en) | 2014-11-24 | 2014-11-24 | A kind of retro-reflection measurement apparatus |
| US15/529,464 US10393655B2 (en) | 2014-11-24 | 2015-04-08 | Apparatus for retro-reflection measurement using a holed mirror and circular aperture for annular band detection |
| PCT/CN2015/076082 WO2016082416A1 (en) | 2014-11-24 | 2015-04-08 | Retro-reflection measuring device |
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| WO2016082416A1 (en) * | 2014-11-24 | 2016-06-02 | 杭州远方光电信息股份有限公司 | Retro-reflection measuring device |
| CN110646380B (en) * | 2019-10-17 | 2022-02-11 | 安徽岩芯光电技术有限公司 | Retroreflection detection system and retroreflection detector for road marking |
| CN111735769B (en) * | 2020-08-07 | 2020-12-04 | 中国人民解放军国防科技大学 | Traffic sign retroreflection coefficient rapid measurement device and method |
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| EP2369323A1 (en) * | 2010-03-19 | 2011-09-28 | Mechatronic Traffic GmbH | Method and measuring device for determining the retroreflectivity of a retroreflective surface |
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| WO2006091968A2 (en) * | 2005-02-25 | 2006-08-31 | Belfort Instrument Company | Multiple-angle retroreflectometer |
| GB0514108D0 (en) * | 2005-07-08 | 2005-08-17 | Rolls Royce Plc | A monitoring arrangement |
| US7964834B2 (en) * | 2009-04-30 | 2011-06-21 | Bae Systems Information And Electronic Systems Integration Inc. | Low backscatter test method and apparatus |
| US8675194B2 (en) * | 2011-05-12 | 2014-03-18 | Gamma Scientific Inc. | Apparatus for measuring the retroreflectance of materials |
| CN103063609A (en) * | 2011-10-19 | 2013-04-24 | 交通运输部公路科学研究所 | Traffic sign reflective membrane reflection performance prediction analysis method |
| CN102901714B (en) * | 2012-05-04 | 2015-01-14 | 交通运输部公路科学研究所 | Retroreflection coefficient measurement method adopting spectral correction |
| CN103076305B (en) * | 2012-12-28 | 2015-03-25 | 西北核技术研究所 | Device for measuring surface diffuse reflectivity of material |
| CN103344613B (en) * | 2013-07-26 | 2016-09-28 | 杭州远方光电信息股份有限公司 | A kind of material reflection characteristic measurement apparatus and method |
| CN204214774U (en) * | 2014-11-24 | 2015-03-18 | 杭州远方光电信息股份有限公司 | A kind of retro-reflection measurement mechanism |
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