CN204228265U - A kind of Nearfield distribution photometer - Google Patents
A kind of Nearfield distribution photometer Download PDFInfo
- Publication number
- CN204228265U CN204228265U CN201420709602.XU CN201420709602U CN204228265U CN 204228265 U CN204228265 U CN 204228265U CN 201420709602 U CN201420709602 U CN 201420709602U CN 204228265 U CN204228265 U CN 204228265U
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- arm
- light source
- nearfield
- light fixture
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Abstract
The utility model discloses a kind of Nearfield distribution photometer, comprise: horizontal rotating chassis, be installed on horizontal rotating chassis for carrying the 3DOF light source adjustment platform of light source or light fixture, be installed on the horizontal arm on horizontal rotating chassis, be installed on the Height Adjustable upright arm on horizontal arm, be installed on the rotating mechanism on upright arm, be installed on rotating mechanism, and the U-shaped pivoted arm that can rotate around light source or light fixture of adjustable in length, be installed on the electronic imaging apparatus on U-shaped pivoted arm.Wherein horizontal rotating chassis adopts the combination of pivoting support and worm screw, and drive worm screw to rotate by motor and speed reduction unit, finally realize light source adjustment platform to fix and the mode of motion of horizontal arm rotation, effectively can avoid the impact that the temperature variation etc. in measuring process caused by light fixture motion causes measurement, be conducive to improving and measure efficiency, and the height of C.G. of Nearfield distribution photometer can be effectively reduced.The simple and easy controllability of the height of upright arm and the length of U-shaped pivoted arm enables the utility model be applicable to the measurement of various different size light source or light fixture.In addition, the utility model sound construction is compact, and easy flexibly, measuring accuracy is high.
Description
Technical field
The utility model relates to a kind of light and radiation meter, particularly relates to a kind of Nearfield distribution photometer.Be mainly used in measurement gas discharge lamp, the light sources such as LED or light fixture in the light distribution of space all directions, Luminance Distribution, and the luminosity information such as the Illumination Distribution of total space arbitrary section.
Background technology
Total space distribution measuring comprises near field measurement and far-field measurement.Far-field measurement is by measuring with the brightness value of each point on the virtual spherical surface that is the centre of sphere of the luminosity center of light source or light fixture or light intensity value, and then calculate other luminosity value, measuring accuracy is high, but the measuring distance required by it is larger, and equipment is huge, mechanism is complicated, and require the darkroom with larger solid space, cost is also high.And near field measurement is at the brightness value closely measuring down each point on virtual spherical surface by electronic imaging apparatus (as imaging brightness meter), again according to the near field Luminance Distribution of light source or light fixture, the light distribution of space all directions is extrapolated by the method for ray tracing, and the luminosity information such as the Illumination Distribution in arbitrary cross section, space.Near field measurement has many advantages compared to far-field measurement, and the measuring distance required by it is short, and shared by equipment, solid space is little, and can obtain the Illumination Distribution in arbitrary cross section in space, and different directions observes the spatial light distribution details such as the Luminance Distribution of light source or light fixture.In recent years, International Commission on Illumination (CIE) is also constantly being studied and standardization Nearfield distribution photometer.
In the prior art, 1, Nearfield distribution photometer adopts is light source or light fixture rotation, the mode of motion that detector rotates around light source or light fixture.The spinning motion of light source or light fixture can cause the temperature around light source or light fixture to change, and then changes the direction of propagation of light beam, affects final measurement result.The impact of temperature variation on the light source such as gas-discharge lamp and LED or light fixture is particularly large.In addition, International Commission on Illumination (CIE) clear stipulaties measure time light source or light fixture around gas flow rate should be less than 0.2m/s, which limits the lamp motion speed under this kind of metering system, reduce measurement efficiency.2, the measuring distance of Nearfield distribution photometer is immutable, or due to the height of turntable bearing or the restriction of height of C.G., the adjustable extent of measuring distance is less, and this all result in existing Nearfield distribution photometer can not be applicable to the light source of various different size or the measurement of light fixture preferably.3, the horizontal rotating chassis of Nearfield distribution photometer is higher, and upright arm height is unadjustable, and the overall center of gravity which results in existing Nearfield distribution photometer is higher, and overall performance is unstable, and light source or light fixture are not easily installed.
Summary of the invention
For the deficiencies in the prior art, the utility model aims to provide a kind of Nearfield distribution photometer, it adopts light source or light fixture to fix, electronic imaging apparatus (being generally imaging brightness meter) is around the metering system of the luminosity central rotation of light source or light fixture, measuring distance can step-less adjustment, entire system center of gravity is low and adjustable, and overall performance is stablized.The utility model can measurement light source or light fixture in the light distribution of space all directions, Luminance Distribution, and the luminosity information such as the Illumination Distribution of total space arbitrary section.
Above-mentioned technical matters of the present utility model is solved by following technical proposals: a kind of Nearfield distribution photometer comprises: horizontal rotating chassis, be installed on horizontal rotating chassis for carrying the 3DOF light source adjustment platform of light source or light fixture, be installed on the horizontal arm on horizontal rotating chassis, be installed on the Height Adjustable upright arm on horizontal arm, be installed on the rotating mechanism on upright arm, be installed on rotating mechanism, and the U-shaped pivoted arm that can rotate around light source or light fixture of adjustable in length, be installed on the electronic imaging apparatus on U-shaped pivoted arm.Wherein, described rotating mechanism comprises the active rotation axle be made up of motor and speed reduction unit and the driven turning axle be made up of bearing and axle.Described active rotation axle is all in horizontality with driven turning axle and overlaps.The turning axle of described rotating mechanism is vertical with the output shaft of horizontal rotating chassis, and the luminosity center superposition of diaxon intersection point and light source or light fixture.Described electronic imaging apparatus is positioned at the center of U-shaped pivoted arm, and the optical axis of electronic imaging apparatus passes through the luminosity center of light source or light fixture.
Described horizontal rotating chassis adopts the combination of external tooth pivoting support and worm screw, or the combination of external tooth pivoting support and driving gear, the height of horizontal rotating chassis and whole instrument can be effectively reduced, and enable horizontal rotating chassis bear larger axial force, radial force, tilting moment.The inner ring of described external tooth pivoting support is connected with cylindrical support seat.Described light source adjustment platform is connected with described cylindrical support seat.Described horizontal arm is connected with the outer ring of described pivoting support.Reducer output shaft is driven to rotate by motor, the worm screw that drive is connected with reducer output shaft or driving gear rotate, thus indirectly drive the outer ring of the external tooth pivoting support engaged with worm screw or driving gear to rotate, finally realize light source adjustment platform and fix and the mode of motion of horizontal arm rotation.During measurement, light source or light fixture maintain static, and are conducive to improving measuring efficiency, effectively can avoid again the impact that the temperature variation etc. in measuring process caused by light fixture motion causes measurement simultaneously.
Described light source adjustment platform has 3 degree of freedom, and it is by an X-direction translation stage, and the lifting table of a Y-direction translation stage and a Z-direction combines, for loading light source or light fixture, and the luminosity center of energy minute adjustment and fixed light source or light fixture.Described X-direction translation stage and described Y-direction translation stage are installed on the top of described Z-direction lifting table, and are provided with locking device.The lifting table of described Z-direction is worm and gear lifting table, load-bearing capacity is comparatively strong, and effectively can reduce the space of light source adjustment shared by platform, can realize the measurement to light source all directions to greatest extent, meanwhile, described worm and gear lifting table has natural auto-lock function.
Described upright arm is the combined mechanism of dovetail groove planker and dovetail groove slide block.Equidistant cutting two exhausting holes on described dovetail groove planker.Described dovetail groove slide block also digs two grooves accordingly.The relative position of described dovetail groove planker and described dovetail groove slide block can regulate, namely can the height of step-less adjustment upright arm.Described dovetail groove planker and described dovetail groove slide block are by nut and the screw lock through through hole, groove.
Described U-shaped pivoted arm is made up of two pivot arms and web joint.Equidistant cutting two exhausting holes on described web joint.Described pivot arm also digs two grooves accordingly, and thick and heavyization process is done in pivot arm one end, to keep equalising torque when rotating.The relative position of described pivot arm and described web joint can regulate, namely can the length of the U-shaped pivoted arm of step-less adjustment.Described pivot arm and described web joint are by nut and the screw lock through through hole, groove.
Described upright arm and U-shaped pivoted arm can be combined.According to the difference of light source or light fixture size, after determining theoretical measuring distance, first regulate the length of U-shaped pivoted arm to ensure that the photocentre of electronic imaging apparatus (being generally imaging brightness meter) reaches theoretical value to the distance at the luminosity center of light source or light fixture.Then, regulate the height of upright arm, just do not contact as optimum condition with horizontal arm when moving to minimum point with U-shaped pivoted arm.Effectively can reduce height during whole instrument single measurement like this, ensure that instrument always works under the position and posture of the best.
The technical solution of the utility model can also be perfect further:
The outer ring of described pivoting support arranges the angle measurement scrambler for measuring pivoting support outer ring rotating angle.Described angle measurement scrambler and described worm screw or driving gear are installed on the both sides of pivoting support respectively, and realize measuring by engaging with pivoting support outer ring.So just, effectively can utilizing the space of horizontal rotating chassis, achieving the measurement to rotational angle when not increasing horizontal rotating chassis height.
The active rotation axle of described rotating mechanism arranges the angle measurement scrambler for measuring active rotation axle rotational angle.Described angle measurement scrambler can be coaxial with described active rotation axle.
Two pivot arms of described U-shaped pivoted arm are carved with through what demarcate, described electronic imaging apparatus photocentre is to the scale value of the actual range at light source or light fixture luminosity center.Just while the U-shaped pivoted arm of adjustment, measuring distance can be determined easily like this without the need to too complicated instrument or structure.In addition, described U-shaped pivoted arm adopts quality light, and the material that hardness is high is made, and as aluminum matrix composite, so the center of gravity of whole instrument can be concentrated on described horizontal rotating chassis, be conducive to the stability of raising equipment.
Described electronic imaging apparatus can adopt the imaging brightness meter of 2 Vc CD arrays, and the focal length of the optical lens of described imaging brightness meter can regulate within the specific limits.
Described motor is servomotor.Described speed reduction unit is worm type of reduction gearing or planetary reduction gear.
Described cylindrical support seat is arranged on base plate.Described base plate is provided with four feets, and the level of whole instrument is by regulating described feet to regulate.Described base plate is provided with four rolling, is convenient to the carrying of whole instrument.
Beneficial effect
In sum, the beneficial effects of the utility model are: horizontal rotating chassis adopts the combination of external tooth pivoting support and worm screw, the height of horizontal rotating chassis and whole instrument can be effectively reduced, and larger axial force, radial force, tilting moment can be born.Utilize the relative gyration characteristic of pivoting support inner ring and outer ring, finally realize light source or light fixture to maintain static and the metering system of electronic imaging apparatus motion, be conducive to improving and measure efficiency, effectively can avoid again the impact that the temperature variation etc. in measuring process caused by light fixture motion causes measurement simultaneously.Described 3DOF light source adjustment platform both can easily regulate the luminosity center with fixed light source or light fixture, turn reduced the space shared by self, can realize the measurement to light source all directions to greatest extent.In addition, upright arm and U-shaped pivoted arm can be combined, and can arrange different measuring distances, effectively can reduce height during whole instrument single measurement according to the difference of light source or light fixture size, ensure that instrument always works under the position and posture of the best.
Accompanying drawing explanation
Accompanying drawing 1 is front view of the present utility model.
Accompanying drawing 2 is oblique two survey axonometric drawings of the present utility model.
Accompanying drawing 3 is the vertical view of horizontal rotating chassis of the present utility model.
Accompanying drawing 4 is the cut-open view of A-A in Fig. 3.
Embodiment
As shown in Figure 1, a kind of Nearfield distribution photometer of the present utility model comprises: horizontal rotating chassis 1, be installed on horizontal rotating chassis 1 for carrying the 3DOF light source adjustment platform 2 of light source or light fixture 8, be installed on the horizontal arm 3 on horizontal rotating chassis 1, be installed on the Height Adjustable upright arm 4 on horizontal arm 3, be installed on the rotating mechanism 5 on upright arm 4, be installed on rotating mechanism 5, and the U-shaped pivoted arm 6 that can rotate around light source or light fixture 8 of adjustable in length, be installed on the electronic imaging apparatus 7 on U-shaped pivoted arm 6.Wherein, described rotating mechanism 5 comprises the active rotation axle 5-5 be made up of motor 5-1 and planetary reduction gear 5-2 and the driven turning axle 5-6 be made up of bearing 5-3 and axle 5-4.Described active rotation axle 5-5 and driven turning axle 5-6 is all in horizontality and overlaps.The turning axle 5-5 of described rotating mechanism 5 is vertical with the output shaft 1-11 of horizontal rotating chassis 1, and the luminosity center superposition of diaxon intersection point and light source or light fixture 8.Described electronic imaging apparatus 7 is positioned at the center of the web joint 6-2 of U-shaped pivoted arm 6, and the optical axis of electronic imaging apparatus 7 passes through the luminosity center of light source or light fixture 8.
Be the structural representation of horizontal rotating chassis of the present utility model as shown in Figure 2 to 4.Described horizontal rotating chassis 1 adopts the combination of external tooth pivoting support 1-2 and worm screw 1-3.The inner ring 1-7 of described external tooth pivoting support 1-2 is connected with cylindrical support seat 1-1.Described light source adjustment platform 2 is connected with described cylindrical support seat 1-1.Described horizontal arm 3 is connected with the outer ring 1-8 of described pivoting support.The output shaft of worm type of reduction gearing 1-10 is driven to rotate by motor 1-9, the worm screw 1-3 be connected with speed reduction unit 1-10 output shaft is driven to rotate, thus indirectly drive the outer ring 1-8 of the external tooth pivoting support 1-2 engaged with worm screw 1-3 to rotate, the inner ring 1-7 finally realizing pivoting support 1-2 fixes and outer ring 1-8 rotates, i.e. fixing the and mode of motion that horizontal arm 3 rotates of light source adjustment platform 2.
As shown in Figure 4, described cylindrical support seat 1-1 is arranged on base plate 1-4.Described base plate 1-4 is provided with the feet 1-5 of four adjustable horizontals.Described base plate 1-4 is provided with four rolling 1-6.
Be illustrated in figure 2 of the present utility model oblique two and survey axonometric drawing.Described light source adjustment platform 2 has 3 degree of freedom, and it is by an X-direction translation stage 2-2, and the lifting table 2-1 of a Y-direction translation stage 2-3 and Z-direction combines, for loading light source or light fixture 8.Described Y-direction translation stage 2-3 is arranged at the top of described X-direction translation stage 2-2, and described X-direction translation stage 2-2 is installed on the top of the lifting table 2-1 of described Z-direction.The position of X-direction translation stage 2-2 and Y-direction translation stage 2-3 top shoe can be regulated respectively by rotating knob 2-4 and knob 2-5.Translation stage 2-2 and translation stage 2-3 is provided with locking device.The lifting table 2-1 of described Z-direction is worm and gear lifting table, by rotating the height of knob 2-6 adjustable up-down platform 2-1.
Described upright arm 4 is the combined mechanism of dovetail groove planker 4-1 and dovetail groove slide block 4-2.Equidistant cutting two exhausting hole 4-3 on described dovetail groove planker 4-1.Described dovetail groove slide block also digs two groove 4-4 accordingly.Described dovetail groove slide block 4-2 can slide along dovetail groove planker 4-1 in the vertical direction, namely can the height of step-less adjustment upright arm 4.Described dovetail groove planker 4-1 and described dovetail groove slide block 4-2 locks by nut 4-5 with through the screw 4-6 of through hole 4-3, groove 4-4.
Described U-shaped pivoted arm 6 is made up of two pivot arm 6-1 and web joint 6-2.Described web joint 6-2 both sides are equidistant respectively digs through hole 6-4.Described pivoted arm 6-1 also digs two groove 6-3 accordingly, and does thick and heavyization process in pivot arm 6-1 one end, to keep equalising torque when rotating.Described web joint 6-2 can move along pivot arm 6-1, namely can the length of the U-shaped pivoted arm 6 of step-less adjustment.Described pivot arm 6-1 and web joint 6-2 locks by nut 6-5 with through the screw 6-6 of through hole 6-4, groove 6-3.
During actual measurement, first measured light or light fixture 8 are installed on light source adjustment platform 2.Size according to light source or light fixture 8 determines theoretical measuring distance, the scale on contrast pivot arm, makes actual measuring distance reach theoretical value along pivot arm 6-1 mobile link plate 6-2 to regulate the length of U-shaped pivoted arm 6.By nut 6-5 with through the screw 6-6 of through hole 6-4, groove 6-3, pivot arm 6-1 and web joint 6-2 is locked.Move dovetail groove slide block 4-2 to regulate the height of upright arm 4 along dovetail groove planker 4-1 in the vertical direction, just do not contact as optimum condition with horizontal arm 3 when moving to minimum point with U-shaped pivoted arm 6.Respectively adjusting knob 2-4,2-5,2-6, to regulate the position at the luminosity center of light source on light source adjustment platform 2 or light fixture 8, make the luminosity of light source or light fixture 8 be centrally located on the turning axle 5-5 of rotating mechanism 5 and the output shaft 1-11 perpendicular intersection of horizontal rotating chassis 1.The relative position of its optical axis being adjusted when installing electronic imaging apparatus 7, the focal length of the optical lens on electronic imaging apparatus 7 need be regulated to ensure imaging clearly at this.Start rotating mechanism 5, drive U-shaped pivoted arm 6 to rotate, so drive electronic imaging apparatus 7 around with the luminosity center of light source or light fixture 8 for the center of circle, take measuring distance as the circular motion of radius.Imaging device 7 often rotates certain angle and all can stop and gather a luminosity information.After the collection that imaging device 7 completes the luminosity information on a ring belt on light source or light fixture 8, start the motion in horizontal rotating chassis 1, drive horizontal arm 3 and the whole mechanism comprising imaging device 7 be connected with horizontal arm 3 rotate a certain angle.Restart rotating mechanism 5, make imaging device 7 gather luminosity information on light source or light fixture 8 on another ring belt.Then the rotation imaging device 7 of stepping in the horizontal direction again ... ... the rotation imaging device 7 of in the vertical direction stepping again ... and so forth, until complete the light distribution to measured light or light fixture 8 space all directions, the measurement of the luminosity information such as Luminance Distribution.
Visible, the utility model sound construction is compact, and easy flexibly, measuring accuracy is high.
Claims (10)
1. a Nearfield distribution photometer, it is characterized in that comprising: horizontal rotating chassis (1), be installed on horizontal rotating chassis (1) for carrying 3DOF light source adjustment platform (2) of light source or light fixture (8), be installed on the horizontal arm (3) on horizontal rotating chassis (1), be installed on the Height Adjustable upright arm (4) on horizontal arm (3), be installed on the rotating mechanism (5) on upright arm (4), be installed on rotating mechanism (5), and the U-shaped pivoted arm (6) that can rotate around light source or light fixture (8) of adjustable in length, be installed on the electronic imaging apparatus (7) on U-shaped pivoted arm (6).
2. a kind of Nearfield distribution photometer according to claim 1, it is characterized in that, horizontal rotating chassis (1) adopts the combined mechanism of external tooth pivoting support (1-2) with worm screw (1-3) or the combined mechanism of external tooth pivoting support (1-2) and driving gear.
3. a kind of Nearfield distribution photometer according to claim 1, it is characterized in that, light source adjustment platform (2) has 3 degree of freedom, and by worm and gear lifting table (2-1) and translation stage (2-2), translation stage (2-3) combines.Translation stage (2-2) and translation stage (2-3) all carry locking device.
4. a kind of Nearfield distribution photometer according to claim 1 or 2 or 3, it is characterized in that, worm and gear lifting table (2-1) is fixed on cylindrical support seat (1-1), described cylindrical support seat (1-1) is connected with the inside race (1-7) of pivoting support (1-2), and horizontal arm (3) is connected with the outer race (1-8) of pivoting support (1-2).
5. a kind of Nearfield distribution photometer according to claim 1, it is characterized in that, the combined mechanism that upright arm (4) is dovetail groove planker (4-1) and dovetail groove slide block (4-2), described dovetail groove planker (4-1) upper equidistant cutting two exhausting holes (4-3), described dovetail groove slide block (4-2) also digs two grooves (4-4) accordingly, dovetail groove slide block (4-2) can slide along dovetail groove planker (4-1) in the vertical direction, dovetail groove planker (4-1) and dovetail groove slide block (4-2) are by nut (4-5) with through through hole (4-3), screw (4-6) locking of groove (4-4).
6. a kind of Nearfield distribution photometer according to claim 1 or 2 or 4, it is characterized in that, rotating mechanism (5) comprises the active rotation axle (5-5) be made up of motor (5-1) and speed reduction unit (5-2) and the driven turning axle (5-6) be made up of bearing (5-3) and axle (5-4), described active rotation axle (5-5) and driven turning axle (5-6) are all in horizontality and overlap, active rotation axle (5-5) is vertical with the output shaft (1-11) of horizontal rotating chassis (1), and the luminosity center superposition of diaxon intersection point and light source or light fixture (8).
7. a kind of Nearfield distribution photometer according to claim 1, it is characterized in that, U-shaped pivoted arm (6) is made up of two pivot arms (6-1) and web joint (6-2), described web joint (6-2) both sides are equidistant respectively digs two exhausting holes (6-4), described pivoted arm (6-1) also digs two grooves (6-3) accordingly, web joint (6-2) can be mobile along pivot arm (6-1), pivot arm (6-1) and web joint (6-2) are by nut (6-5) with through through hole (6-4), screw (6-6) locking of groove (6-3).
8. a kind of Nearfield distribution photometer according to claim 1 or 7, is characterized in that, thick and heavyization process is done in pivot arm (6-1) one end, to keep equalising torque when rotating.
9. a kind of Nearfield distribution photometer according to claim 1 or 7, it is characterized in that, two pivot arms (6-1) of U-shaped pivoted arm (6) are carved with through what demarcate, described electronic imaging apparatus (7) photocentre is to the scale value of the actual range at light source or light fixture (8) luminosity center.
10. a kind of Nearfield distribution photometer according to claim 1 or 7, it is characterized in that, electronic imaging apparatus (7) is positioned at the center of the web joint (6-2) of U-shaped pivoted arm (6), and the optical axis of electronic imaging apparatus (7) passes through the luminosity center of light source or light fixture (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420709602.XU CN204228265U (en) | 2014-11-23 | 2014-11-23 | A kind of Nearfield distribution photometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420709602.XU CN204228265U (en) | 2014-11-23 | 2014-11-23 | A kind of Nearfield distribution photometer |
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| CN204228265U true CN204228265U (en) | 2015-03-25 |
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| CN201420709602.XU Expired - Fee Related CN204228265U (en) | 2014-11-23 | 2014-11-23 | A kind of Nearfield distribution photometer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105222994A (en) * | 2015-09-25 | 2016-01-06 | 北京奥博泰科技有限公司 | A kind of distributed photometer |
| CN110095255A (en) * | 2019-02-19 | 2019-08-06 | 广东蚂标检测技术有限公司 | A kind of test device and its application method suitable for the distribution of LED lamp near field optic |
-
2014
- 2014-11-23 CN CN201420709602.XU patent/CN204228265U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105222994A (en) * | 2015-09-25 | 2016-01-06 | 北京奥博泰科技有限公司 | A kind of distributed photometer |
| CN105222994B (en) * | 2015-09-25 | 2017-10-13 | 北京奥博泰科技有限公司 | A kind of distributed photometer |
| CN110095255A (en) * | 2019-02-19 | 2019-08-06 | 广东蚂标检测技术有限公司 | A kind of test device and its application method suitable for the distribution of LED lamp near field optic |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150325 Termination date: 20151123 |