CN204989623U - Smooth attenuating device of continuously adjustable light intensity - Google Patents
Smooth attenuating device of continuously adjustable light intensity Download PDFInfo
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- CN204989623U CN204989623U CN201520729146.XU CN201520729146U CN204989623U CN 204989623 U CN204989623 U CN 204989623U CN 201520729146 U CN201520729146 U CN 201520729146U CN 204989623 U CN204989623 U CN 204989623U
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Abstract
The utility model provides a smooth attenuating device of continuously adjustable light intensity, the device include light source and the total mark ball more than two or two, are equipped with into the unthreaded hole on every total mark ball and go out the unthreaded hole, and the order is cascaded between each total mark ball, promptly after the light -emitting jogged joint of previous total mark ball a total mark ball advance the unthreaded hole, two cascaded total mark balls of order are connected the position and all are equipped with electronics iris diaphragm, are used for adjusting getting into the total mark ball and from the smooth radiant flux of total mark ball outgoing. The utility model discloses a device can realize that the segmentation of light intensity decays in succession, can realize the quantification and adjust, and the back light distribution that decays is even, and attenuation coefficient control range is wide, and can being applied to on a large scale, the smooth detection sensitivity of optical attenuator, device or the equipment of continuous ration regulation surveys, radiant quantity and a plurality of fields such as colour measurement, spectral characteristic assay of light source.
Description
Technical field
The utility model relates to light intensity attenuation technical field and field of optical measuring technologies, is specifically related to a kind of attenuating device that can regulate light intensity continuously.
Background technology
In the optical path, optical attenuation sheet and even tabula rasa can realize optical attenuation and even light.Optical attenuation sheet utilizes the absorption of light and reflex to the light intensity decayed in certain wavelength band.Optical attenuation sheet has certain attenuation coefficient, but unadjustable, if desired the light of varying strength, needs the attenuator preparing multiple differential declines coefficient, then changes as required, which increase complicacy and the cost of operation.Existing light attenuation device (Chinese patent " day, blind ultraviolet filter band ended depth test device outward " being 201310603534.9 as application number adopts optical attenuation sheet to carry out optical attenuation), after there is optical attenuation non-quantitative, decay, light distribution is uneven and intensity that is decay light source such as cannot to regulate continuously at the shortcoming, make attenuating device in some practical application, there is attenuation coefficient little, after decay, light intensity does not still reach the problem of attenuation requirement.Therefore, the requirement of accurate optical measurement can not be met, be also difficult in some aspects, as application in transducer sensitivity detection.
Given this, generally do not use attenuator in field of precision measurement, and adopt integrating sphere device.Integrating sphere is the hollow spheres that an inwall scribbles diffusive white reflective material.Ball wall is opened one or several fenestra, as light well, the receiver hole placing light receiving element and light hole.Integrating sphere inwall is coated with the diffuse-reflective material that reflectivity is very high, like this, the light entering integrating sphere, through inside coating multiple reflections, inwall forms uniform illumination.Integrating sphere is generally used for doing even radiant and optical attenuation.Compare with even tabula rasa with traditional optical attenuation sheet, integrating sphere can realize the Light distribation of Uniform attenuation, therefore, is widely used in the field such as the demarcation of the photoluminescence Study of light source, Spectral Property Analysis, device and equipment, high-precision optical test.
But in some application-specific, as in transducer sensitivity detection, require very weak light source, therefore, require higher to the attenuation coefficient of attenuating device, and require output intensity continuously adjustabe among a small circle.Now, for meeting request for utilization, needing the attenuator of heavy caliber integrating sphere and high attenuation coefficient, causing difficulty of processing, quality and cost all very high like this, even utilize existing actual process cannot process at all.
Summary of the invention
For the technological deficiency existed in above prior art, the purpose of this utility model is to provide a kind of light attenuation device of continuously adjustabe light intensity, and this device is interior on a large scale can regulate decay light intensity continuously.
The utility model solves the technical scheme that its technical matters adopts:
A kind of light attenuation device of continuously adjustabe light intensity, this device comprises light source and two or more integrating sphere, each integrating sphere is provided with light well and light hole, concatenated in order between each integrating sphere, namely the light hole of previous integrating sphere connects the light well of a rear integrating sphere, two integrating sphere connecting portions of concatenated in order are all equipped with electronic variable diaphragm, are used for regulating entering integrating sphere and the light radiant flux from integrating sphere outgoing.
Each integrating sphere is also provided with the light power meter for detecting the irradiance on integrating sphere inwall.
Described light power meter selects current mode light power meter or photon counting-type light power meter or this combination of two kinds.
Further, first integrating sphere light well of light source incidence is provided with optical filter, is used for filtering parasitic light.
Described electronic variable diaphragm comprises light hole, baffle plate and motor, and driven by motor baffle plate moves left and right.
Described electronic variable diaphragm comprises multiple blade, diaphragm adjustment ring, gear and motor, and multiple blade forms rotary annular and the outer cause diaphragm adjustment ring of annular is fixed, and diaphragm adjustment ring is connected with gear, and gear is rotated by Electric Machine Control.
Further, connected by coupling arrangement between each integrating sphere, described coupling arrangement comprises the clamping ring placed inside and outside two, be fixedly connected with by web member or rubber ring between clamping ring, or outside the outside of the inner side of clamping ring and interior clamping ring respectively correspondence be provided with groove, spring and steel ball is provided with in groove, wherein spring is arranged in the groove of interior clamping ring, steel ball is located at the top of spring, steel ball is fixed in the groove of outer clamping ring under spring force, thus two clamping rings are linked together.
Preferably, in described coupling arrangement, the clamping ring be connected with electronic variable diaphragm is provided with limiting stand.
Preferably, described electronic variable diaphragm is respectively arranged with screw thread with in the circumference of the clamping ring be connected, and both realize being fastenedly connected by screw thread.
The utility model can solve the technological deficiency that light attenuation device in the market exists, and has the following advantages:
(1) this device can realize the zonal cooling decay of light intensity, can realize quantification and regulate.After decay, light distribution is even, and attenuation coefficient range of adjustment is wide.
(2) application number is the Chinese patent " day blind uv radiation intensity robot scaling equipment " of 201410312773.3, and disclose blind uv irradiance robot scaling equipment of a kind of day, it adopts single integrating sphere to carry out optical attenuation, and the outgoing ultraviolet light irradiation degree after decay is 10
-7-10
-13w/cm
2, in actual applications, this cannot meet the testing requirement of sensitiveer solar blind ultraviolet detector sensitivity.When cascade unit of the present utility model ultraviolet band blind in day, the outgoing ultraviolet light irradiation degree after decay can reach 10
-17-10
-19w/cm
2, far away higher than the irradiance of above-mentioned single integrating sphere patent.
(3) device of the present utility model can be applicable to the light detection sensitivity detection of optical attenuator, device or the equipment that continuous and quantitative on a large scale regulates, the radiant quantity of light source and multiple field such as color measuring, Spectral Property Analysis.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model light attenuation device;
Fig. 2 is that first of the utility model electronic variable diaphragm implements structural drawing;
Fig. 3 is that second of the utility model electronic variable diaphragm implements structural drawing;
Fig. 4 is the connected mode one of the utility model two integrating sphere light holes and light well;
Fig. 5 is the connected mode two of the utility model two integrating sphere light holes and light well;
Fig. 6 is the connected mode three of the utility model two integrating sphere light holes and light well.
In figure, 1-light source, 2-light well filter plate, 3-light power meter, 4-first integral ball, 5-second integral ball, 6-third integral ball, 7-the 4th integrating sphere, 8-electronic variable diaphragm, 9-light hole, 10-light hole, 11-baffle plate, 12-motor, 13-blade, 14-diaphragm adjustment ring, 15-gear, 16-clamping ring A, 17-clamping ring B, 18-screw, 19-steel ball, 20-spring, 21-rubber ring, 22-boss.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, the light attenuation device of a kind of continuously adjustabe light intensity of the utility model, comprise light source 1, two or more integrating sphere, wherein, each integrating sphere comprises light well, light hole 9, for detecting the light power meter 3 of the irradiance on integrating sphere inwall, first integral ball 4 light well is provided with filter plate 2, be used for filtering parasitic light, the light well of all the other integrating spheres and light hole are all equipped with electronic variable diaphragm 8, be used for regulating and enter integrating sphere and the light radiant flux from integrating sphere outgoing, and then the zonal cooling realizing output intensity regulates.Concatenated in order between each integrating sphere, the light hole of previous integrating sphere is connected with the light well of a rear integrating sphere, and connecting portion is provided with electronic variable diaphragm, and the light hole as first integral ball 4 connects the light well of second integral ball 5.
From the light beam of light source 1 outgoing, after filtration after wave plate 2 filtering parasitic light, enter first integral ball 4 from the light well of first integral ball 4, light beam in first integral ball 4 after repeatedly diffuse reflection, from light hole 9 outgoing, emergent light is the equally distributed radiant light through overdamping.The ratio of output intensity and input intensity is approximately: the surface area of light output hole area/and bulb separation inside.Light hole 9 position is provided with electronic variable diaphragm 8, the size of unthreaded hole or light well can be adjusted, and then regulation output light radiant flux.Meanwhile, on integrating sphere inwall, also have an aperture, be placed with light power meter 3, be used for detecting light irradiance, the reading of observable light power meter regulates light irradiance to arrive required value.
Light is after first integral ball 4 is decayed, and the light beam of outgoing from first integral ball 4 will directly enter second integral ball 5, and after second integral ball 5 is decayed again, the light beam of outgoing from second integral ball 5 will directly enter third integral ball 6, the like.Concatenated in order between each integrating sphere.
Device of the present utility model regulates output intensity on a large scale by increase and decrease integrating sphere quantity, the adjustment output intensity coming among a small circle by regulating electronic variable diaphragm 8.Wherein electronic variable diaphragm 8 can change the size of light hole, and then controls light intensity; Meanwhile, multiple integrating sphere can carry out multilevel decay to the light intensity of light source.The two combines the zonal cooling that can realize light intensity and regulates.Meanwhile, each integrating sphere is provided with light power meter, can the light irradiance of this this integrating sphere inwall of real-time detection, the quantification achieving decay light intensity regulates, and incident beam is through the repeatedly diffuse reflection of integrating sphere inwall, and the attenuate light of outgoing is evenly distributed.The utility model is by multiple integrating sphere cascade, realize the multistage decay of incident light, the integrating sphere quantity of cascade can be selected as required, considerably increase the range of adjustment of this device light attenuation coefficient, can need to adjust stronger attenuate light according to use, also can adjust very weak attenuate light.
The electronic variable diaphragm used in the utility model device can have following two kinds of versions:
1, as shown in Figure 2, electronic variable diaphragm 8 is made up of light hole 10, baffle plate 11 and motor 12 3 part.Move left and right by controlling motor 12 controllable register 11, when baffle plate 11 is moved to the left, baffle plate 11 and light hole 10 overlapping region are strengthened gradually, and logical light diaphragm diminishes, and light hole light radiant flux diminishes; When baffle plate 11 moves right, baffle plate 11 and light hole 10 overlapping region reduce gradually, and logical light diaphragm becomes large, and light hole light radiant flux becomes large.
2, as shown in Figure 3, electronic variable diaphragm 8 is made up of multiple blade 13, and blade 13 outer rim is diaphragm adjustment ring 14, and diaphragm adjustment ring 14 is connected with gear 15, and gear 15 is controlled to rotate by motor 12.Gear 15 rotating band rotating ring circle regulating ring rotates, and then the rotation of band moving vane 13, and the rotation of blade 13 causes the change of logical light aperture area size, adjusts unthreaded hole light radiant flux with this.
Two of concatenated in order integrating spheres being linked together by arranging a coupling arrangement, mainly containing following three kinds of modes by the connection between integrating sphere light hole and light well:
1. as shown in Figure 4, this coupling arrangement comprises the clamping ring A16 be connected with first integrating sphere light hole, comprising the clamping ring B17 be connected with the light well of second integrating sphere, also comprising the some web members for being fixed together by clamping ring A16 and clamping ring B17.Clamping ring A16 and clamping ring B17 coordinates, as fixing in screw 18 by web member therebetween.
2. clamping ring A16 and clamping ring B17 coordinates.Clamping ring B17 is provided with steel ball 19, clamping ring A16 has corresponding groove, be used for fixing steel ball 19.Steel ball 19 one end is provided with spring 20, makes steel ball can carry out small stretching.After clamping ring A16 is connected with clamping ring B17, fixed by steel ball 19.Clamping ring B17 there are some depressed parts, have the spring 20 that is in compression in it respectively, and be positioned at the steel ball 19 on spring 20.There are some grooves the position that clamping ring A16 is corresponding with it, and when clamping ring A16 is fixedly connected with clamping ring B17, steel ball 19 is fixed in the groove of clamping ring A16 under spring force, achieves a fixed connection.
3. clamping ring A16 and clamping ring B17 coordinates.Clamping ring B17 is provided with rubber ring 21, is used for fixing clamping ring A16 and clamping ring B17.
Between the clamping ring of electronic variable diaphragm 8 in two integrating spheres wherein any one integrating sphere and coupling arrangement.When iris loads clamping ring from integrating sphere direction, the boss 22 in clamping ring limits the movement of iris, stops moving on of iris, makes it stop at fixed position.This iris can be fixed between integrating sphere and clamping ring by coupling arrangement.Same, the circumference of this iris also can be arranged to screw thread, utilizes and arrange opposite threads on clamping ring, and both realize more being fastenedly connected by screw thread.
Above-mentioned light attenuation device of the present utility model can be used for solar blind UV detector sensitivity and detects; whole pick-up unit and testing process all need complete under dark room conditions; to remove environment parasitic light, improve the signal to noise ratio (S/N ratio) detected, the use safety of protection detector.Pick-up unit comprises light source 1, for hiding described light source 1 with integrating sphere, electronic variable diaphragm 8, the light power meter 3 of the lamp house preventing parasitic light from entering, optical filter 2, light well, light hole 9,4 cascades.The light sent from light source 1 enters light well and integrating sphere by optical filter 2, after decaying successively via the integrating sphere of 4 cascades, and outgoing from the light hole of last integrating sphere.The service band of this device is day blind ultraviolet band: 240 ~ 280nm, and the optical filter 2 adopted is 240 ~ 280nm wave band bandpass filter, for the interference of stray light of its all band of filtering.The light source 1 adopted is the ultraviolet deuterium lamp of high stability.
Because the minimum detection accuracy of current obtainable current mode light power meter is on the market pW (10
-12w) magnitude, therefore, by first integral ball 4 and second integral ball 5 cascade composition one-level optical attenuator, the luminous power on control second integral ball 5 inwall is in pW magnitude, and current mode light power meter selected by the light power meter 3 be arranged on first integral ball 4 and second integral ball 5.Third integral ball 6 and the 4th integrating sphere 7 cascade composition two-stage dimmer, photon counting-type light power meter selected by the light power meter 3 be arranged on third integral ball 6 and the 4th integrating sphere 7, can obtain radiant exitance control 10 at the light hole 9 of the 4th integrating sphere 7
-17-10
-19w/cm
2emergent light, the light hole>=50mm of the 4th integrating sphere 7.Concrete running parameter is as shown in the table:
The running parameter of table 1 sensitivity technique
Claims (9)
1. the light attenuation device of a continuously adjustabe light intensity, this device comprises light source and two or more integrating sphere, each integrating sphere is provided with light well and light hole, it is characterized in that, concatenated in order between each integrating sphere, namely the light hole of previous integrating sphere connects the light well of a rear integrating sphere, and two integrating sphere connecting portions of concatenated in order are all equipped with electronic variable diaphragm, are used for regulating entering integrating sphere and the light radiant flux from integrating sphere outgoing.
2. the light attenuation device of a kind of continuously adjustabe light intensity according to claim 1, is characterized in that, each integrating sphere is also provided with the light power meter for detecting the irradiance on integrating sphere inwall.
3. the light attenuation device of a kind of continuously adjustabe light intensity according to claim 2, is characterized in that, described light power meter selects current mode light power meter or photon counting-type light power meter or this combination of two kinds.
4. the light attenuation device of a kind of continuously adjustabe light intensity according to claim 1, is characterized in that, first integrating sphere light well of light source incidence is provided with optical filter, is used for filtering parasitic light.
5. according to the light attenuation device of a kind of continuously adjustabe light intensity one of Claims 1-4 Suo Shu, it is characterized in that, described electronic variable diaphragm comprises light hole, baffle plate and motor, and driven by motor baffle plate moves left and right.
6. according to the light attenuation device of a kind of continuously adjustabe light intensity one of Claims 1-4 Suo Shu, it is characterized in that, described electronic variable diaphragm comprises multiple blade, diaphragm adjustment ring, gear and motor, multiple blade forms rotary annular and the outer cause diaphragm adjustment ring of annular is fixed, diaphragm adjustment ring is connected with gear, and gear is rotated by Electric Machine Control.
7. according to the light attenuation device of a kind of continuously adjustabe light intensity one of Claims 1-4 Suo Shu, it is characterized in that, connected by coupling arrangement between each integrating sphere, described coupling arrangement comprises the clamping ring placed inside and outside two, be fixedly connected with by web member or rubber ring between clamping ring, or outside the outside of the inner side of clamping ring and interior clamping ring respectively correspondence be provided with groove, spring and steel ball is provided with in groove, wherein spring is arranged in the groove of interior clamping ring, steel ball is located at the top of spring, steel ball is fixed in the groove of outer clamping ring under spring force, thus two clamping rings are linked together.
8. the light attenuation device of a kind of continuously adjustabe light intensity according to claim 7, is characterized in that, in described coupling arrangement, the clamping ring be connected with electronic variable diaphragm is provided with limiting stand.
9. the light attenuation device of a kind of continuously adjustabe light intensity according to claim 7, is characterized in that, described electronic variable diaphragm is respectively arranged with screw thread with in the circumference of the clamping ring be connected, and both realize being fastenedly connected by screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520729146.XU CN204989623U (en) | 2015-09-18 | 2015-09-18 | Smooth attenuating device of continuously adjustable light intensity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520729146.XU CN204989623U (en) | 2015-09-18 | 2015-09-18 | Smooth attenuating device of continuously adjustable light intensity |
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| CN204989623U true CN204989623U (en) | 2016-01-20 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105388610A (en) * | 2015-09-18 | 2016-03-09 | 江苏南大五维电子科技有限公司 | Light attenuation device capable of continuously adjusting light intensity |
| CN105929351A (en) * | 2016-06-03 | 2016-09-07 | 中国电力科学研究院 | Test apparatus and test method of sensitivity of ultraviolet imager |
-
2015
- 2015-09-18 CN CN201520729146.XU patent/CN204989623U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105388610A (en) * | 2015-09-18 | 2016-03-09 | 江苏南大五维电子科技有限公司 | Light attenuation device capable of continuously adjusting light intensity |
| CN105388610B (en) * | 2015-09-18 | 2018-02-09 | 江苏南大五维电子科技有限公司 | A kind of light attenuation device of continuously adjustabe light intensity |
| CN105929351A (en) * | 2016-06-03 | 2016-09-07 | 中国电力科学研究院 | Test apparatus and test method of sensitivity of ultraviolet imager |
| WO2017206953A1 (en) * | 2016-06-03 | 2017-12-07 | 中国电力科学研究院 | Method for testing sensitivity of ultraviolet imager, testing device thereof, and storage medium |
| CN105929351B (en) * | 2016-06-03 | 2019-06-04 | 中国电力科学研究院 | Test device and the test method of ultraviolet imager sensitivity |
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| GR01 | Patent grant |