CN101592519B - Synchronous reflection distributing photometer - Google Patents
Synchronous reflection distributing photometer Download PDFInfo
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- CN101592519B CN101592519B CN2008100616982A CN200810061698A CN101592519B CN 101592519 B CN101592519 B CN 101592519B CN 2008100616982 A CN2008100616982 A CN 2008100616982A CN 200810061698 A CN200810061698 A CN 200810061698A CN 101592519 B CN101592519 B CN 101592519B
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Abstract
The invention discloses a synchronous reflection distributing photometer which comprises two independent bases, wherein a detected light source is connected with the first base and rotates around a vertical axis, and a first optical reflection mirror rotating around the detected light source is arranged on the first base; a second optical reflection mirror synchronously and coaxially rotating along with the first optical reflection mirror is arranged on the second base, an optic axis of a first optical detector is coaxial with a rotating center line, and the first optical detector is fixed during measurement; the first optical reflection mirror reflects a light beam emitted by the detected light source to the remote second optical reflection mirror; and after being reflected by the second optical reflection mirror, the light beam is positively projected into the first optical detector. The synchronous reflection distributing photometer obviously reduces a polarization error brought by the second optical reflection mirror due to a smaller incident angle of the light beam and lowers a measurement error brought by polarization in the prior synchronous reflection distributing photometer in addition to reducing darkroom spaces and stabilizing the height of the light source; in addition, the first optical detector is arranged opposite to the detected light source so as to conveniently limit stray light interference; and different measurement can be realized without any additional alignment by shifting the position of the first optical detector or selecting different optical detectors.
Description
Technical field
The present invention relates to a kind of light and radiation meter, be mainly used in various types of light sources and light fixture light distribution or the test of light distribution performance on all directions, and the synchronous reflection distributing photometer of the total light flux of light source and light fixture test.
Background technology
Light distribution on all directions of space is the important parameter of light source and light fixture, and distribution photometer is the instrument of the light intensity of accurate measurement light source and light fixture with angular distribution, and luminous intensity measurement is normally realized by illumination photometry and square distance law of reciprocity.Reflection mirror distribution photometer is owing to can be to be recommended by International Commission on Illumination (CIE) and other international standard with the far-field measurement of realizing long distance what keep measured light measurement attitude.Existing rotary mirror type distribution photometer has two kinds of schemes usually: a kind of is that reflection mirror distribution photometer 100 is rotated at the center, as shown in Figure 1, the distribution photometer of such scheme optical mirror 102 when measuring is in center of rotation, rotate around main shaft 108 in the measurement, and rotate around optical mirror 102 by the measured light 104 of arm clamping, arm must rotate around asessory shaft round about synchronously simultaneously, constant with the burning-point attitude that keeps measured light, measured light can rotate around self Z-axis, and optical mirror will be from the beam reflection of measured light to photometric detector 106; Another kind is a circular motion reflection mirror distribution photometer 200, as shown in Figure 2, on the turning axle of the optical mirror 202 that the distribution photometer of this scheme is in measured light 204 to make circular motion, optical mirror 202 is around measured light 204 rotation, the light that measured light 204 is sent through optical mirror 202 back reflections to optical detector 206.Though these two kinds of schemes are measurement scheme of at present more accurate light distribution, they but have defective separately.With regard to the catoptron distribution photometer is rotated at the center, measured light 104 will move in a sizable spatial dimension, because certainly existing of air-flow, movement velocity, acceleration and centrifugal force, be difficult to during the measured light burning-point guarantee its high stable state, this is the principle problem that this scheme can't overcome; Secondly, the center is rotated in the catoptron distribution photometer and is realized that than difficult the complete mechanical of main shaft and asessory shaft is synchronous, therefore is difficult to reach the high angle precision; In addition, the distribution photometer of the type needs very high space, darkroom, and total cost increases thereupon.And with regard to circular motion catoptron distribution photometer, though its measured light is in relative static conditions, and can light by the light source physical slot, it is the most stable that light source is lighted, but there is following problems in it: at first, according to CIE No.70-1987 technical report, angle between the optical axis of tested light beam and the optical axis of optical detector should be above 2.5 °, this needs quite long darkroom to realize, and under so long measuring distance, the light intensity at optical detector place a little less than, be difficult to accurately to measure; Secondly, circular motion catoptron distribution photometer requires optical detector bigger receiving aperture to be arranged with the tested light beam on the reception all directions, but so also can make more parasitic light enter optical detector simultaneously, thereby influences measuring accuracy.
For addressing the above problem, last word synchronous reflection distributing photometer, be illustrated in figure 3 as typical synchronous reflection distributing photometer.In this synchronous reflection distributing photometer scheme, first optical mirror 302 is around measured light 304 rotations, the light that measured light 304 is sent reflexes on second optical mirror 312 that rotates synchronously with first optical mirror 302, realize two optical mirrors 302,312 synchronous reflection incides on the optical detector 310 of synchronous rotation through first optical mirror 302 and second optical mirror, 312 beam reflected.This synchronous reflection distributing photometer scheme can effectively solve above-mentioned center and rotate reflection mirror distribution photometer 100 and circular motion reflection mirror distribution photometer 200 existing problems, can reduce the darkroom and take up an area of, and keeps light stability, reduces interference of stray light.
Yet according to the polarisation of light theory, direct reflection can be brought the polarisation of light problem.The plane that constitutes with the normal of incident beam optical axis and optical mirror is the plane of incidence, when direct reflection takes place, the emissivity of the light wave (s ripple) of vertical incidence face direction vibration and the light wave (p ripple) that is parallel to the vibration of plane of incidence direction is different can bring polarization of reflected light, and when incident angle is smaller, when approaching vertical incidence, polarization effect is very little.The measuring error of being brought by polarization is the common issue with of existing rotary mirror type distribution photometer, and in existing synchronous reflection distributing photometer, the polarization effect of being brought by direct reflection can be superposeed once more by second optical mirror 312 and have the possibility of amplifying, and brings bigger measuring error therefrom.
In existing synchronous reflection distributing photometer, although be provided with cone before the optical detector 306, the length of cone falls short of, and can bring veiling glare to disturb, and this has proposed to compare higher requirement for the control of total system parasitic light.
Summary of the invention
In order to overcome the above-mentioned defective that exists in the existing distribution photometer scheme, the present invention aims to provide a cover synchronous reflection distributing photometer, to reduce the darkroom occupation of land, keep light source highly stable, reduce on the basis of interference of stray light, reduce the polarization problem brought by the two sides optical mirror, thereby better control parasitic light reduces measuring error, and the method for the position by in short distance, regulating optical detector continuously and a plurality of optical detectors are set, can under the situation that need not to aim at separately, realize multiple measurement brachium (measuring distance), convenient light and the radiation profiles performance of measuring various light sources and light fixture exactly.
Above-mentioned technical matters of the present invention is mainly solved by following technical proposals, that is: a kind of synchronous reflection distributing photometer comprises first pedestal and second pedestal; First pedestal is provided with the rotary centerline of level, on first pedestal with the coaxial stationary shaft that is provided with of rotary centerline, arm one end links to each other with stationary shaft, and the other end of arm is provided with the rotating driving device of measured light, makes measured light around the vertical rotation axis rotation that intersects vertically with rotary centerline; Stationary shaft is provided with by the overcoat bearing can be around rotating first rotating shaft that center line rotates, and first rotating shaft links to each other with the axle shape supporting base that is fixed in first pedestal by the overcoat bearing again, to strengthen the rigidity of whole synchronous reflection distributing photometer; The fixedly connected pivoted arm of first rotating shaft, one end, first optical mirror is installed in an end of pivoted arm.Second pedestal be provided with can be coaxial with rotary centerline second rotating shaft, second rotating shaft can be rotated synchronously with first rotating shaft, an end that it is characterized in that second rotating shaft is fixedlyed connected with an end of mirror holder, the other end of mirror holder is connected with second optical mirror, second optical mirror and rotary centerline are angled to intersect, first optical detector fixedly installs towards second optical mirror, and the optical axis of first optical detector is coaxial with rotary centerline; First optical mirror from the beam reflection of measured light to second optical mirror of first optical mirror rotation synchronously on, through second optical mirror once more light reflected normal incidence to the sensitive surface of first optical detector.
Measured light is only around the rotation of self Z-axis in the above-mentioned design, and keeps transfixion in measurement, light source can be under high stability state burning-point, do not vibrated and the influence of impact and outside air convection current; By the synchronous tracking of second optical mirror, first optical detector receives tested light beam with positive dirction all the time under static condition, the error problem of having avoided oblique incidence to bring; By second optical mirror light path of turning back, shared darkroom length reduces greatly simultaneously.Because the distance between first pedestal and second pedestal is generally distant, the beam optical axis and the incident angle between the second optical mirror normal that incide second optical mirror through first optical mirror are smaller, know by the polarization theory, incident angle hour, minute surface is to perpendicular to plane of incidence (s ripple) be parallel to the reflectivity basically identical of plane of incidence (p ripple), and therefore the polarization problem that second optical mirror brings in the synchronous reflection distributing photometer of the present invention obviously reduces; In addition in synchronous reflection distributing photometer of the present invention, the sensitive surface of first optical detector is back to the measured light setting, and the front of first optical detector generally is provided with cone, by direct incident first optical detector of the light beam of measured light, the parasitic light control of system is comparatively easy.
The present invention can be further qualified technique scheme by following additional technical feature:
Second optical detector is set on pivoted arm, second optical detector is over against measured light, the second optical detector optical axis intersects with rotary centerline and is vertical, under the situation of first optical mirror and the second optical reflection mirror reflection (first optical mirror and second optical mirror of this moment get up with opaque black flannelette cover), second optical detector can be under short distance (being generally 1 to 3 meter) implement measurement to the distribution of light sources performance, the measurement lower limit of synchronous reflection distributing photometer to small light source widened in the setting of second optical detector greatly, what is more important uses second optical detector can use the Illumination Distribution method to measure the light source of various sizes and the total light flux of light fixture under very high degree of precision, in principle, the Illumination Distribution method also is one of National Laboratory of developed country method of setting up national luminous flux benchmark.
The first above-mentioned optical detector front side is provided with the first long cone, first optical detector hangs on ceiling by first cone, perhaps first cone also can be fixedlyed connected with arm by supporting arm, and perhaps first cone is by the stent support of standing on ground.In order to reach rigidity preferably, reduce simultaneously as far as possible and be in the light, the mode that hangs on the ceiling is preferred.
In above-mentioned second rotating shaft, the other end of second optical mirror is connected with the 3rd optical detector, on second pedestal rotary switching mechanism is set simultaneously, the pivot center of switching mechanism and second shaft axis intersect vertically, and can measure light path to the 3rd optical detector or the incision of second optical mirror by the Rotate 180 degree.Perhaps also can be provided with on second pedestal and can rotate and three rotating shaft synchronous with pivoted arm around horizontal axis, an end of the 3rd rotating shaft links to each other with the 3rd optical detector; The 3rd rotating shaft and second rotating shaft can be arranged side by side, and the switching mechanism of the 3rd optical detector or the incision of second optical mirror being measured light path by translation is set on second pedestal simultaneously.Above-mentioned the 3rd optical detector is after being measured light path by incision, optical axis and rotary centerline form an angle crossing, the 3rd optical detector is in the face of first optical mirror, and along with in measuring with the synchronous coaxial rotation of first optical mirror, receive from tested light beam and through the first optical mirror beam reflected with positive dirction all the time.
Can realize the third measuring distance by being provided with of the 3rd optical detector, and by the 3rd optical detector is rotated synchronously with first optical mirror, it is normal direction incident the 3rd optical detector that tested light beam is always zero angle, has avoided light oblique incidence and detector perforate excessive and introduce the measuring error that parasitic light brings.
Comprise the 4th optical detector in the above-mentioned synchronous reflection distributing photometer, the 4th cone is set before the 4th optical detector, the support of the 4th optical detector is fixedlyed connected with the 4th cone, is used to support the 4th optical detector and the 4th cone thereof.Support is connected with the incision mechanism of the 4th optical detector simultaneously, and incision mechanism is used for the incision of the 4th optical detector or cuts out measuring light path.When light path was measured in the incision of the 4th optical detector, the 4th optical detector was positioned at the very near position, the place ahead of second optical mirror, and the sensitive surface optical axis of the 4th optical detector is coaxial with rotary centerline.The attainable measuring distance of the 4th optical detector is again to the last distance that arrives the 4th optical detector of second optical mirror from measured light to first optical mirror, but because the 4th optical detector is very near to the distance between second optical detector, use the 4th optical detector only need use one synchronously and the rotating driving device of pivoted arm, than the easier realization of the 3rd detector.The support of the 4th above-mentioned optical detector can be independently, and cutting mechanism accordingly can be pulley.For easy to use, the support of the 4th above-mentioned optical detector can be connected with the incision structure of second pedestal by the 4th optical detector.The incision mechanism of this moment can be a whirligig, by the support that rotation links to each other with second pedestal light path is cut or cut out to the 4th optical detector.
In the above-mentioned synchronous reflection distributing photometer, between first pedestal and second pedestal guide rail can be set, guide rail can make first optical detector convenient accurately mobile to realize various measuring distances on the rotary centerline between first pedestal and second pedestal.In synchronous reflection distributing photometer of the present invention, if first optical detector is suspended on the ceiling, then corresponding guide rail also is arranged on the ceiling; If first optical detector is arranged on ground by support, then corresponding guide rail also is provided with on the ground.
In the above-mentioned synchronous reflection distributing photometer, spectral radiometer is set on pivoted arm, the photosurface of the optical sampling device of spectral radiometer is over against measured light.Spectral radiometer is the quick spectral radiometer with hyperchannel probe unit (as CCD), by the rotation of pivoted arm around measured light, the photochromic distribution in space of spectral radiometer energy measurement measured light provides more comprehensive and accurate measured light space radiation distribution performance parameter fast.
First optical detector of above-mentioned synchronous reflection distributing photometer, before the sensitive surface of second optical detector and the 3rd optical detector (if in the synchronous reflection distributing photometer second optical detector or the 3rd optical detector being set) the parasitic light cone that disappears is set, some diaphragms are set in the cone, the center of diaphragm has light hole, described clear aperature is slightly larger than the aperture of tested incident beam, and the aperture of so-called tested incident beam just is meant the aperture that marginal ray constituted to first optical receiver or the second optical receiver sensitive face full-size edge that measured light full-size edge is sent.It should be noted that especially the cone before first optical detector and the 3rd optical detector should be long as far as possible, to reduce parasitic light.
First laser instrument is set on the stationary shaft of above-mentioned synchronous reflection distributing photometer, and its laser beam axis that sends overlaps with rotary centerline; Second laser instrument is set on pivoted arm, and the laser beam axis that it sends is by the intersection point of the vertical rotation axis axis of rotary centerline and measured light.Can adjust the light path of synchronous reflection distributing photometer very accurately and easily by these two laser instruments, and can conveniently aim at measured light, make the luminosity of measured light be centered close to the rotation center of synchronous reflection distributing photometer.
First rotating shaft described in the above-mentioned synchronous reflection distributing photometer and second rotating shaft are passed through turbine and worm speed reduction unit or gear reducer or harmonic wave speed reducing machine by motor and are driven; Described vertical rotation axis is driven by turbine and worm speed reduction unit or harmonic speed reducer by motor.
Stationary shaft guide rail described in the above-mentioned synchronous reflection distributing photometer and slide block group connect with arm.Specifically, an end of light source bolster is provided with fixed guide (as dovetail guide), and slide block is set on guide rail, and slide block can be driven by screw mandrel, and slide block is connected with arm.Screw mandrel promotes slide block and arm is done to move up and down with respect to guide rail and light source bolster, thus can be easily with the luminosity center adjustment of measured light to overlapping with the rotation center of synchronous reflection distributing photometer.
Locking/tripping-gear is set and drives the mechanism that stationary shaft rotates at above-mentioned stationary shaft, when locking/tripping-gear is in releasing orientation, drive stationary shaft and drive arm by the stationary shaft rotary drive mechanism around rotating the center line rotation, after turning over certain angle and making that measured light is in desired burning-point state, lock this locking/tripping-gear, after the locking, stationary shaft recovers stationary state again; Above-mentioned locking/tripping-gear also can be arranged on the arm, in this case, stationary shaft is fixing all the time, when locking/tripping-gear is in releasing orientation, rotary drive mechanism drives arm and rotates around horizontal axis, after making that measured light is in desired burning-point state, lock this locking/tripping-gear.
On the output terminal of described vertical rotation axis, clinometer rule is set in the above-mentioned synchronous reflection distributing photometer, in first rotating shaft of above-mentioned synchronous reflection distributing photometer clinometer rule is set also.
One end of the stationary shaft of above-mentioned synchronous reflection distributing photometer or whole axle are tubular shaft, and the power lead of measured light, vertical rotation axis drive motor control line etc. is arranged on lead on the arm and passes hollow stationary shaft and arrive on first pedestal.
Above-mentioned synchronous reflection distributing photometer is provided with wireless transmitting and receiving device on described pivoted arm, can be used for controlling the device on the pivoted arm, and the data of institute's control device are sent.This method has been avoided a large amount of use power leads and signal wire.
Above-mentioned synchronous reflection distributing photometer adopts existing techniques in realizing such as microelectronic circuits, software, controller and computer that control automatically, the metrical information comprehensively of total system are shown and record.
According to the above, the invention has the beneficial effects as follows: the darkroom takes up room little, light source is highly stable, reduce the polarization that brings by the two sides optical mirror, better control interference of stray light, thereby reduce measuring error, improve measuring accuracy, by selecting different optical detectors for use, need not to aim at the measurement that instrument can be realized different measurement brachiums (measuring distance) separately, increased the measurement dynamic range of synchronous reflection distributing photometer greatly.
Description of drawings
Accompanying drawing 1 rotates reflection mirror distribution photometer synoptic diagram for the prior art center;
Accompanying drawing 2 is prior art circular motion reflection mirror distribution photometer synoptic diagram;
Accompanying drawing 3 is a kind of synchronous reflection distributing photometer synoptic diagram of prior art;
Accompanying drawing 4 is the synoptic diagram of a kind of embodiment of the present invention;
Accompanying drawing 5 is the partial enlarged drawing of I part among Fig. 4;
Accompanying drawing 6 is the synoptic diagram of another kind of embodiment of the present invention;
Accompanying drawing 7 is the second pedestal synoptic diagram of the third embodiment of the present invention;
Accompanying drawing 8 is the synoptic diagram of the 4th kind of embodiment of the present invention;
Accompanying drawing 9 be the 4th optical detector is arranged among Fig. 8 A to B to synoptic diagram.
Embodiment
Embodiment below in conjunction with accompanying drawing is further described in detail the present invention:
Embodiment 1
Synchronous reflection distributing photometer design proposal schematic diagram as shown in Figure 4 and Figure 5, comprise first pedestal 1 and second pedestal 2, first pedestal 1 is provided with and horizontally rotates center line 3, on first pedestal 1 with the rotary centerline 3 coaxial stationary shaft 4 that are provided with, arm 5 one ends link to each other with stationary shaft 4, the other end of arm 5 is provided with the rotating driving device 8 of measured light 6, make measured light 6 around vertical rotation axis 7 rotations, the axis of vertical rotation axis 7 and rotary centerline 3 intersect vertically, stationary shaft 4 is provided with by the overcoat bearing can be around rotating first rotating shaft 9 that center line 3 rotates, first rotating shaft 9 links to each other with the axle shape supporting base 23 that is fixed in first pedestal 1 by the overcoat bearing again, first rotating shaft, 9 one ends pivoted arm 10, the first optical mirrors 11 that are rigidly connected are installed in an end of pivoted arm 10.Second pedestal 2 be provided with rotary centerline 3 coaxial and with first rotating shaft 9 second rotating shafts 30 of rotation synchronously, the fixedly connected mirror holder 36 of one end of second rotating shaft 30, the other end of mirror holder 36 is fixed with second optical mirror, 12, the second optical mirrors 12 and 3 angled intersecting of rotary centerline.Band steel 29 1 ends of two blackings link to each other with the guide rail 50 on the ceiling, suspended first cone 19 of first optical detector, 13 front sides in midair, first optical detector 13 fixedly installs towards second optical mirror 12, and the optical axis of first optical detector 13 is coaxial with rotary centerline 3.First optical mirror 11 from the beam reflection of measured light 6 to synchronously with second optical mirror 12 of first optical mirror, 11 rotations on, through second optical mirror 12 once more light reflected normal incidence to the sensitive surface center of first optical detector 13.In measuring process, first optical mirror 11 and the 12 synchronous equidirectional rotations of second optical mirror, with the light beam of measured light 6 all the time with zero angle normal incidence in first optical detector 13.
On pivoted arm 10, the opposite of first optical mirror 11 is provided with second optical detector, 14, the second optical detectors 14 over against measured light, and the optical axis of second optical detector 14 intersects with rotary centerline and be vertical.When using second optical detector 14, with opaque black flannelette first optical mirror 11 and second optical mirror, 12 covers are got up, second optical detector 14 directly receives the light beam from measured light 6.
In the legend, the pivoted arm 10 of second optical detector, 14 1 sides is provided with the balancing weight 32 that is used for balance pivoted arm 10 moments.The sensitive surface front side of second optical detector 14 is provided with parasitic light second cone 59 that disappears.Be provided with some diaphragms 20 in the cone 19,19 before first optical detector 13 and second optical detector 14, the light hole at diaphragm 20 centers is slightly larger than the aperture of the incident beam of maximum measured light 6.First optical detector 13 and second optical detector 14 are photometric detector, and the relative spectral sensitivity curve of second optical detector 14 is consistent with the human eye vision function curve that International Commission on Illumination stipulates; After the long-pending curve that the spectral reflectance rate curve that the relative spectral sensitivity curve of first optical detector 13 multiply by first optical mirror 11 multiply by the spectral reflectance rate curve gained of second optical mirror 12 is again made normalized, be consistent with the human eye vision function curve of International Commission on Illumination regulation.
In the bucket shape extinction chamber 26 that 1 setting of first optical detector 13 and first pedestal is fixedlyed connected with first optical detector, bucket shape extinction chamber 26 is centered close on the rotary centerline 3, opening surface is to first pedestal 1, and bucket shape extinction chamber 26 sizes are blocked just from the light shafts of measured light 6 direct projections to second optical mirror, 12 directions.
On first pedestal 1, stationary shaft 4 is hollow.One end of stationary shaft 4 is by locking/tripping-gear 15,16 connect with first pedestal 1, this locking/tripping-gear 15, the 16th, form by the circular hole 15 and the lock-screw 16 of an opening, realize locking or unclamping with screw 16, arm 5 is rotated around horizontal axis, stationary shaft 4 is enclosed within worm and gear 28 hollow output shaft, drive by turbine and worm 28, and drive arm 5 rotations.One end of stationary shaft 4 is provided with dovetail guide 21, and slide block 22 is set on guide rail 21, and slide block 22 drives screw mandrel by motor 35 and drives, and fixedlys connected with arm 5 one ends.Measured light 6 rotating driving devices 8 on the arm 5 are the servomotor of band harmonic speed reducer, and vertical rotation axis clinometer rule 27 is set on the output terminal of vertical rotation axis 7.Measured light power lead on the arm and rotating driving device 8 signal wires reach first pedestal 1 by hollow stationary shaft 4.
First rotating shaft, 9 one ends that are enclosed within stationary shaft 4 outward are connected with the output shaft of the worm and gear speed-reduction apparatus 34 of driven by servomotor, and the other end that 24, the first rotating shafts 9 of angle measurement scrambler are set in first rotating shaft 9 is connected with pivoted arm 10.An end that is connected with pivoted arm 10 in first rotating shaft 9 is provided with conducting slip ring 25, leads to first pedestal 1 (as shown in Figure 5) in the power lead of second optical detector 14 on the pivoted arm 10 and signal wire 37 tubular shaft by conducting slip ring 25 arrival stationary shaft 4.Second rotating shaft on above-mentioned second pedestal 2 is by the motor-driven of band harmonic wave speed reducing machine.
First laser instrument 17 is set on stationary shaft 4, and its laser beam axis that sends overlaps with rotary centerline 3.The laser beam axis that second laser instrument, 18, the second laser instruments 18 are set on pivoted arm 10 is by the intersection point of rotary centerline 3 with vertical rotation axis 7 axis of measured light 6.The laser beam that second laser instrument 18 is sent is a quadrature cruciform laser beam.
Utilize first laser instrument 17 and second laser instrument 18 to adjust light paths and realize the aligning of measured light 6.The luminosity center of measured light 6 should be positioned at the laser beam position of intersecting point of first laser instrument 17 and second laser instrument 18, regulate the upright position of measured light 6 by guide rail 21 and slide block group 22, utilize the locking/tripping-gear 15 on the stationary shaft 4,16 and turbine and worm 28 installment state of regulating measured light 6, make it be in desired burning-point state.
After the position of two pedestals distance, first optical mirror 11, second optical mirror 12, first optical detector 13 and second optical detector 18 and the attitude under the reset mode are determined, need not to regulate separately this synchronous reflection distributing photometer and can realize that two kinds are measured brachiums (measuring distance).The one, the light beam of measured light 6 is through the light path of first optical mirror 11 and 13 processes of second optical mirror, 12 back normal incidence first optical detectors; When using first optical detector 13, first rotating shaft 9 and second rotating shaft 30 are rotated synchronously, with the measuring beam of measured light 6 all the time with positive dirction incident band first optical detector 13, the shading value of interior each angle of measurement plane.The light path of 14 processes of direct normal incidence second optical detector of light that second kind of measuring distance is measured light 6, during 14 work of second optical detector, black cloth parcel or other light-blocking matter that the parasitic light effect that first optical mirror 11 and second optical mirror, 12 usefulness must be disappeared is good are built, rotate by pivoted arm 10, second optical detector 14 receives the light shafts of measured light 6 on the different angles direction, the spatial light intensity that uses second optical detector 14 can measure small-scale light sources or light fixture distributes, and second optical detector 14 can also be realized the total light flux measurement of various light sources and light fixture with high precision.Regulate the distance of first optical detector 13 between first pedestal and second pedestal by guide rail 50, can realize more measuring distance.The pivoted arm 10 and second optical mirror 14 (using during 13 work of first optical detector) are around ± 180 ° (or 0～360 °) of measured light 6 rotations, measured light 6 is around ± 180 ° (or 0～360 °) of vertical rotation axis 7 self rotation, can measure to such an extent that the light of measured light 6 on each direction in space distributes, measure accurate and quick.
The present invention adopts existing techniques in realizing such as microelectronic circuits, software, controller and computer that control automatically, the metrical information comprehensively of synchronous reflection distributing photometer are shown and record.
Embodiment 2:
In another embodiment shown in Figure 6, except embodiment 1 described system, on second pedestal 2, also be provided with the 3rd optical detector 39.The 3rd optical detector 39 and second optical mirror 12 are arranged at the two ends of second rotating shaft 30 respectively, also comprise rotary switching mechanism 40 simultaneously on second pedestal 2, and the pivot center of switching mechanism 40 and rotary centerline 3 intersect vertically.By switching mechanism 40, can easily the 3rd optical detector 39 or second optical mirror 12 be cut into the measurement light path.When second optical mirror 12 being cut into when measuring light path, the function of the position of second optical mirror 12, attitude and realization consistent with described in the embodiment 1.The optical axis of the 3rd optical detector 39 and 3 angled intersecting of rotary centerline, intersection point is positioned at the center of the 3rd optical detector 39 photosurfaces, after switching mechanism 40 is with the 3rd optical detector 39 incision light paths, angle between the 3rd optical detector 39 photosurface optical axises and the rotary centerline 3 can be regulated by an angle regulator 42, and the angle after the adjusting makes from measured light and through first optical mirror, 11 beam reflected normal incidences the 3rd optical detector 39.
Be provided with before the sensitive surface of the 3rd optical detector 39 in long the 3rd cone 60, the three cones and be provided with some diaphragms 20, the center of diaphragm 20 has light hole, and described light hole is slightly larger than the marginal ray aperture of tested incident beam.
At two pedestals 1, after the position of 2 location and first optical mirror 11, second optical mirror 12, first optical detector 13, second optical detector 18 and the 3rd optical detector 39 and attitude are determined, need not to regulate separately this synchronous reflection distributing photometer and can realize that three kinds are measured brachium (measuring distance).First and second kinds of measurements are shown in embodiment 1, and the third measuring distance is the light of measured light 6 arrives the 3rd optical detector 39 through first optical mirror 11 a light path.Under the third measuring distance, the 3rd optical detector 39 rotates synchronously with pivoted arm, and measured light is measured the light intensity of measured light on each angle direction around vertical rotation axis 7 rotations.
Embodiment 3:
The 3rd rotating shaft 31 is driven by the reductor by driven by motor, and the 3rd rotating shaft 31 can make the 3rd optical detector 39 rotate synchronously around horizontal axis 53 and pivoted arm, the optical axis of the 3rd optical detector 39 and horizontal axis 53 form an angle crossing, after switching mechanism 40 is with the 3rd optical detector 39 incision light paths, horizontal axis 53 overlaps with rotary centerline 3, angle between the 3rd optical detector 39 optical axises and the rotary centerline 3 can be regulated by an angle regulator 42, and the angle after the adjusting makes from measured light and through first optical mirror, 11 beam reflected normal incidences the 3rd optical detector 39.
Be provided with before the sensitive surface of the 3rd optical detector 39 in long the 3rd cone 60, the three cones 60 and be provided with some diaphragms 20, the center of diaphragm 20 has light hole, and described light hole is slightly larger than the marginal ray aperture of tested incident beam.
At two pedestals 1, after the position of 2 location and first optical mirror 11, second optical mirror 12, first optical detector 13, second optical detector 18 and the 3rd optical detector 39 and attitude are determined, need not to regulate separately this synchronous reflection distributing photometer and can realize that three kinds are measured brachium (measuring distance).First and second kinds of measurements are shown in embodiment 1, and the third measuring distance is the light of measured light 6 arrives the 3rd optical detector 39 through first optical mirror 11 a light path.Under the third measuring distance, the 3rd optical detector 39 rotates synchronously with pivoted arm, and measured light is measured the light intensity of measured light on the angle direction around vertical rotation axis 7 rotations.
Embodiment 4:
At two pedestals 1, after the position of 2 location and first optical mirror 11, second optical mirror 12, first optical detector 13, second optical detector 18 and the 4th optical detector 39 and attitude are determined, need not to regulate separately this synchronous reflection distributing photometer and can realize that three kinds are measured brachium (measuring distance).First and second kinds of measurements are shown in embodiment 1, and the third measuring distance is the light of measured light 6 arrives the 4th optical detector 45 through first optical mirror 11 a light path.Under this measuring distance, the 4th optical detector 45 maintains static, and first optical mirror 11 and second optical mirror 12 are synchronously around measured light 6 rotations, and measured light 6 is measured the light intensity of measured light on the angle direction around vertical rotation axis 7 rotations.
Specific embodiment described herein only is that design of the present invention is illustrated.The technician of the technical field of the invention can do various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Claims (11)
1. a synchronous reflection distributing photometer comprises first pedestal (1) and second pedestal (2); First pedestal (1) is provided with the rotary centerline (3) of level, go up and the coaxial stationary shaft (4) that is provided with of rotary centerline (3) at first pedestal (1), arm (5) one ends link to each other with stationary shaft (4), the other end of arm (5) is provided with the vertical rotation axis (7) that is used to connect measured light (6), on first pedestal (1), be provided with around first rotating shaft (9) that horizontally rotates center line (3) rotation, the first rotating shaft fixedly connected pivoted arms of (9) one ends (10), first optical mirror (11) is installed in an end of pivoted arm (10), second pedestal (2) be provided with overlap with rotary centerline (3) and with first rotating shaft (9), second rotating shaft (30) of rotation synchronously; It is characterized in that: an end of second rotating shaft (30) is fixedlyed connected with an end of mirror holder (36), and the other end of mirror holder (36) is connected with second optical mirror (12), and second optical mirror (12) intersects with rotary centerline (3) is angled; The opposite of second optical mirror (12) is provided with first optical detector (13), and the optical axis of first optical detector (13) overlaps with rotary centerline (3); First optical mirror (11), second optical mirror (12) and first optical detector (13) are in as upper/lower positions and concern: incide second optical mirror (12) from measured light (6) and the light beam that incides first optical mirror (11) after by first optical mirror (11) reflection, this light beam incides the sensitive surface of first optical detector (13) again after second optical mirror (12) reflection.
2. synchronous reflection distributing photometer according to claim 1, it is characterized in that: second optical detector (14) is set on pivoted arm (10), second optical detector (14) is over against measured light (6), and the optical axis of second optical detector (14) intersects with rotary centerline (3) and be vertical.
3. synchronous reflection distributing photometer according to claim 1 and 2 is characterized in that: first cone (19) is set before the sensitive surface of described first optical detector (13), and first optical detector (13) supports by first cone (19); First cone (19) hangs on ceiling, and perhaps first cone (19) is connected with arm (5) by supporting arm, and perhaps first cone (19) is by the stent support of standing on ground.
4. synchronous reflection distributing photometer according to claim 1 and 2, it is characterized in that: the other end in second rotating shaft (30) is connected with the 3rd optical detector (39), on second pedestal, be provided with the 3rd optical detector (39) to be moved apart and measure light path and move apart the rotary switching mechanism (40) of measuring light path, the pivot center of rotary switching mechanism (40) and second rotating shaft (30) intersect vertical axis with second optical mirror (12) incision measurement light path or with second optical mirror (12) incision measurement light path and with the 3rd optical detector (39); The optical axis of described the 3rd optical detector (39) and rotary centerline (3) form an angle crossing; By switching mechanism (40) incision and in place after the sensitive surface of the 3rd optical detector (39) over against from measured light (6) and through first optical mirror (11) beam reflected.
5. synchronous reflection distributing photometer according to claim 1 and 2, it is characterized in that: be provided with on described second pedestal (2) and can rotate and three rotating shaft (31) synchronous with pivoted arm around horizontal axis (53), an end of the 3rd rotating shaft (31) links to each other with the 3rd optical detector (39); Also be provided with on second pedestal (2) the 3rd optical detector (39) to be moved apart and measure light path and move apart the switching mechanism (40) of measuring light path with second optical mirror (12) incision measurement light path or with second optical mirror (12) incision measurement light path and with the 3rd optical detector (39), the rotation horizontal axis (53) of the optical axis of described the 3rd optical detector (39) and the 3rd rotating shaft (31) forms an angle crossing; Overlap with rotary centerline (3) by the horizontal axis (53) behind switching mechanism (40) incision the 3rd optical detector (39), described the 3rd optical detector (39) is in the face of first optical mirror (11), and over against from measured light (6) and through first optical mirror (11) beam reflected.
6. synchronous reflection distributing photometer according to claim 1 and 2, it is characterized in that: the 4th optical detector (45) is set in second optical mirror (12) front, the 4th cone (48) is installed before the sensitive surface of described the 4th optical detector (45), described the 4th cone (48) links to each other with support (46), described support (46) is connected with the incision mechanism (47) that the 4th optical detector (45) can be cut or cut out the measurement light path, when light path is measured with the 4th optical detector (45) incision by incision mechanism (47), the 4th optical detector (45) is in the preceding nearer position of second optical mirror (12), and the sensitive surface optical axis of the 4th optical detector (45) overlaps with rotary centerline (3).
7. synchronous reflection distributing photometer according to claim 6, it is characterized in that: described incision mechanism (47) is fixed on second pedestal (2), the support (46) of described the 4th optical detector (45) is independently, and described incision mechanism (47) is the pulley of support (46) bottom.
8. synchronous reflection distributing photometer according to claim 1 is characterized in that: the guide rail (50) that the rotary centerline (3) of first optical detector (13) between first pedestal and second pedestal upward moved is being set between first pedestal and second pedestal.
9. synchronous reflection distributing photometer according to claim 4, it is characterized in that: second cone (59) is set before the sensitive surface of described second optical detector (14), be provided with the 3rd cone (60) before the sensitive surface of described the 3rd optical detector (39), in second cone (59), the 3rd cone (60) some diaphragm for eliminating stray light (20) be set.
10. synchronous reflection distributing photometer according to claim 1 and 2, it is characterized in that: on rotary centerline (3), extinction awl (26) is set between first optical detector (13) and the measured light (6), and the opening surface of extinction awl (26) is to the direction of measured light.
11. synchronous reflection distributing photometer according to claim 1 and 2 is characterized in that: on described pivoted arm (10) spectral radiometer is set, the photosurface of the optical sampling device of spectral radiometer is over against measured light.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008100616982A CN101592519B (en) | 2008-05-26 | 2008-05-26 | Synchronous reflection distributing photometer |
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| CN2008100616982A CN101592519B (en) | 2008-05-26 | 2008-05-26 | Synchronous reflection distributing photometer |
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| CN101592519B true CN101592519B (en) | 2011-08-10 |
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| CN106803410A (en) * | 2015-11-26 | 2017-06-06 | 西安诺瓦电子科技有限公司 | LED display module testing equipment |
| CN106803412A (en) * | 2015-11-26 | 2017-06-06 | 西安诺瓦电子科技有限公司 | LED display module testing equipment and method |
| CN108709101A (en) * | 2018-04-11 | 2018-10-26 | 苏州艾力光电科技有限公司 | A kind of light source distance adjusting apparatus |
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