CN205406496U - Light emitting diode's optical detection device - Google Patents

Abstract

The utility model provides a light emitting diode's optical detection device, includes: a plummer is used for bearing a light emitting area of treating the light emitting diode of detection, one receives the light ware, contains one and receives light end and light -emitting end, and this receipts light end is this plummer setting of orientation, and a wavelength interface element, locate between this light emitting area of waiting to detect light emitting diode holds with the light -emitting of this receipts light ware.

Description

A kind of optical detection apparatus of light-emittingdiode

Technical field

This creation relates to the optical detection apparatus of a kind of light-emittingdiode, and is particularly to a kind of detecting device for detecting light-emittingdiode luminous intensity.

Background technology

The structure of light-emittingdiode has horizontal, rectilinear and crystal covering type three kinds.In horizontal light-emittingdiode, two electrode is disposed on luminescent layer, and therefore luminescent layer is subject to covering of electrode and reduces the area of transmitting illuminant, lessens its luminous efficiency.Similarly, one of them electrode of vertical light-emitting diode covers on luminescent layer, also reduces luminous efficiency.Relatively, two electrodes of crystal covering type light-emitting diode and luminescent layer are disposed on two opposing faces of substrate, that is, luminescent layer will not be subject to the impact of electrode, thus makes crystal covering type light-emitting diode have luminous efficiency best in three kinds of structures.Meanwhile, crystal covering type light-emitting diode also has less heat fading, is quite suitable for light-emittingdiode illumination component.

Generally speaking, light-emittingdiode crystal grain just can carry out the application of reality after must first go through test, the testing process of light-emittingdiode is to be carried on the carrier of a detecting device after being loaded with the mounted wafer of light-emittingdiode, then contact electrode with probe and pass to electric current and make light-emittingdiode luminous, the characteristics of luminescence is detected again through light receiving device (such as integrating sphere or solaode), and electrical by probe in detecting light-emittingdiode.

Referring to Figure 1A, it is shown that the optical detection apparatus 100 of a kind of known light-emittingdiode.The detecting device 100 of this known light-emittingdiode includes carrier 110, light receiving device 120 and an optical detector 130.Carrier 110 includes a plummer (chuck) 140 and a supporter (holder) 150 support bearing platform 140, and this supporter 150 surface has a vacuum hole 155.One film spreading 180 (such as blue film or tunica albuginea) is in order to attach plural number light-emittingdiode 170 to be detected on its surface and can through expanding plural number that brilliant step makes film spreading 180 surface light-emittingdiode 170 to be detected each other within a predetermined distance apart from one another by, clamping internal ring 160A and an one clamping outer shroud 160B clamping film spreading 180 and be fixed on outside supporter 150.One air extractor (not shown) connects this vacuum hole 155 to be extracted out by the gas between this carrier and this film spreading 180, makes film spreading 180 be adsorbed in plummer 140 surface.During test, 2 survey devices 190 connect the anelectrode 175A and negative electrode 175B on light-emittingdiode 170 surface respectively and light light-emittingdiode 170, make the light that the light-emittingdiode 170 in detection sends be injected by the receipts light end 125 of light receiving device 120, then the light collected by light receiving device 120 is sent to the optical detector 130 being connected with light receiving device 120 to carry out optical detection again.

Refer to Figure 1B, when using this known optical detection apparatus 100 for light-emittingdiode to bleed from vacuum hole 155, it is positioned at the film spreading 180 on vacuum hole 155 and can be attached at more closely and rapidly vacuum hole 155 because of distance vacuum hole 155, and directly stop vacuum hole 155, air between plummer 140 and film spreading 180 cannot be discharged smoothly, in turn result in film spreading 180 and cannot smooth be attached in plummer 140 surface, cause that a survey device 190 is when detecting each light-emittingdiode 170, the distance of upper and lower pin must be elongated to reduce and be caused light-emittingdiode 170 by a probability for survey device 190 scratch when carrier 110 moves, detection speed is caused to reduce.Also will result in a survey device 190 slide additionally, film spreading 180 smooth cannot be attached at plummer 140 surface when lower pin, or electrically unstable when light-emittingdiode 170 is susceptible to displacement or rotation and causes measuring.

In view of this, this creation is disclose a kind of optical detection apparatus suitable in light-emittingdiode, uses the shortcoming improving the above-mentioned known optical detection apparatus for light-emittingdiode.

Utility model content

The one of this creation is characterized by providing the optical detection apparatus of a kind of light-emittingdiode, including a: plummer in order to carry a light-emitting area of a light-emittingdiode to be detected；One light receiving device, comprises a receipts light end and and goes out light end, and this receipts light end is directed towards this plummer and arranges；And a Wavelength changing element, it is located at the light-emitting area of this light-emittingdiode to be detected and going out between light end of this light receiving device.

In an embodiment of the present utility model, this Wavelength changing element be arranged at this light receiving device receive light end or this light receiving device go out light end.

In an embodiment of the present utility model, this Wavelength changing element is incorporated into this receipts light end of this light receiving device removably, and maybe this goes out light end.

In an embodiment of the present utility model, this Wavelength changing element includes a first wave length bridgeware and a second wave length bridgeware, this first wave length bridgeware and this second wave length bridgeware and has different radiation wavelength.

In an embodiment of the present utility model, this Wavelength changing element is movably to be incorporated into this receipts light end of this light receiving device maybe this goes out light end, so that this first wave length bridgeware or this second wave length bridgeware are pointed to this receipts light end, maybe this goes out light end.

In an embodiment of the present utility model, this plummer has a first surface and a second surface relative with this first surface, this first surface is to carry this light-emittingdiode to be detected, and this plummer is transparent, this Wavelength changing element is the first surface or this second surface that are incorporated into this plummer.

In an embodiment of the present utility model, the optical detection apparatus of this light-emittingdiode also comprises an optical detector, a light-guide device and adjusts element, this optical detector is coupled to this light receiving device, and this light-guide device and this adjustment element be located at this light receiving device go out light end, to be adjusted into the light quantity of this optical detector through this light-guide device and/or this adjustment element.

In an embodiment of the present utility model, this adjustment element comprises one first light modulation part and one second light modulation part, this first light modulation part and this second light modulation part and there is different light transmittances, what this adjustment element was movably incorporated into this light receiving device goes out light end, so that this first light modulation part or this second light modulation part are pointed to this and go out light end.

In an embodiment of the present utility model, this light-guide device has a light harvesting end, this light harvesting end be movably coupled to light receiving device go out light end.

In an embodiment of the present utility model, this adjustment assembly comprises one first perforate and one second perforate, this first perforate and this second perforate have different size, and what this adjustment element was movably incorporated into this light receiving device goes out light end, so that this first perforate or this second perforate are pointed to this and go out light end.

Accompanying drawing explanation

What Figure 1A～1B illustrated is the optical detection apparatus generalized section of known a kind of light-emittingdiode.

What Fig. 2 A illustrated is the light-emittingdiode optical detection apparatus according to this creation embodiment one.

What Fig. 2 B, 2D, 2E illustrated is the carrier generalized section of the light-emittingdiode optical detection apparatus according to this creation embodiment one.

What Fig. 2 C illustrated is the carrier top view of the light-emittingdiode optical detection apparatus according to this creation embodiment one.

What Fig. 3 A～3B illustrated is the carrier generalized section of the light-emittingdiode optical detection apparatus according to this creation embodiment two.

What Fig. 4 A～4B illustrated is the carrier generalized section of the light-emittingdiode optical detection apparatus according to this creation embodiment three.

What Fig. 5 A～5B illustrated is the plummer schematic diagram of the light-emittingdiode optical detection apparatus according to this creation embodiment four.

What Fig. 6 A～6B illustrated is the plummer schematic diagram of the light-emittingdiode optical detection apparatus according to this creation embodiment five.

What Fig. 7 A～7C illustrated is the plummer schematic diagram of the light-emittingdiode optical detection apparatus according to this creation embodiment six.

What Fig. 8 A～8C illustrated is the generalized section of the light-emittingdiode optical detection apparatus according to this creation embodiment seven, eight.

What Fig. 9 illustrated is the generalized section of the light-emittingdiode optical detection apparatus according to this creation embodiment nine.

What Figure 10 illustrated is the generalized section of the light-emittingdiode optical detection apparatus according to this creation embodiment ten.

Symbol description

100 known light-emittingdiode optical detection apparatus

200,800,800 ', 800 " light-emittingdiode optical detection apparatus

110,210,310,410 carrier

120,220,720,820 light receiving device

125,225,725,825 light end is received

130,230,730,830 optical detector

140,240,340,440,540,640,740 plummer

150,250,350,450 supporter

155 vacuum holes

160A clamps internal ring

160B clamps outer shroud

170,270,370,470,570,670,770 light-emittingdiode

175A, 275A, 375A, 475A, 575A, 675A, 775A anelectrode

175B, 275B, 375B, 475B, 575B, 675B, 775B negative electrode

180,280,380,480,580,680,780 film spreading

190,290,390,490,590,690,790 survey devices

240a, 340a, 440a, 540a, 640a, 740a first surface

240b, 340b, 440b, 540b, 640b, 740b second surface

250a, 350a, 450a side surface

350b, 450b upper surface

251,351,451 protuberance

255,355A the first vacuum hole

256 partition walls

355B the second vacuum hole

260,360,460 depression

262A, 362A, 462A clamp internal ring

262B, 362B, 462B clamp outer shroud

271 light-emitting areas

452 bodies

453 extensions

454 gaps

455C the 3rd vacuum hole

541,641,741 first area

542,642,742 second area

671 first light-emittingdiodes

672 second light-emittingdiodes

673 the 3rd light-emittingdiodes

781 reflection cavities

783 reflecting layer

784,884 light-guide device

784a, 884a light harvesting end

826 go out light end

850 Wavelength changing elements

850A first wave length bridgeware

850B second wave length bridgeware

850C the 3rd wavelength conversion member

850D the 4th wavelength conversion member

850E the 5th wavelength conversion member

850F the 6th wavelength conversion member

860 adjust element

861 main bodys

862 first perforates

863 second perforates

864 first light modulation parts

865 second light modulation parts

D1 aisle

Detailed description of the invention

Will be detailed below the making of this creation embodiment and occupation mode.So it should be noted that this creation provides many creation concepts being available for application, it can multiple particular form be implemented.Although the specific embodiment discussed as an example with light emitting diode element in literary composition, so it is only the ad hoc fashion of this creation of manufacture and use, is not used to limit the scope of this creation, and any semiconductor element with analog structure is equally applicable to this creation.

Embodiment one:

Below in conjunction with Fig. 2 A～2E generalized section illustrated, the light-emittingdiode optical detection apparatus according to this creation embodiment one is described.

First, refer to Fig. 2 A, it is shown that the optical detection apparatus 200 of light-emittingdiode of this creation embodiment one, and optical detection apparatus 200 includes carrier 210 and a light receiving device 220, and preferably separately comprises an optical detector 230 and a bit survey device 290.Carrier 210 includes a plummer (chuck) 240 and a supporter (holder) 250 support bearing platform 240, this plummer 240 is to carry light-emittingdiode 270 to be measured, this supporter 250 is provided with one first vacuum hole 255, and this optical detector 230 and this some survey device 290 are directed towards this plummer 240 and arrange.

Refer to Fig. 2 B and Fig. 2 C, the profile of the carrier 210 in the light-emittingdiode optical detection apparatus of what wherein Fig. 2 B illustrated is the present embodiment, and the top view of the carrier 210 in the light-emittingdiode optical detection apparatus of the present embodiment that Fig. 2 C illustrates, wherein, Fig. 2 B is along the hatching B-B ' of Fig. 2 C profile presented.

Shown in Fig. 2 B, it is relative with this second surface 240b that this plummer 240 has an a first surface 240a and second surface 240b, this first surface 240a, and this first surface 240a carries light-emittingdiode 270 to be measured.The material of this plummer 240 can be transparent or opaque, and the plummer 240 in the present embodiment is to present transparent, makes light be obtained through this plummer 240, thereby detects the characteristics of luminescence of crystal covering type light-emitting diode.The plummer 240 of the present embodiment is by being constituted with transparent quartz, and in other embodiments of this creation, the material of plummer 240 also can be selected for transparent acryl or glass.This supporter 250 is around plummer 240 and has a protuberance 251, and this protuberance 251 is the first surface 240a protruding from this plummer 240, makes the protuberance 251 of this supporter 250 jointly define a depression 260 with the first surface 240a of this plummer 240.This protuberance 251 has a side surface 250a, and this side surface 250a is directed towards and is surrounded on this depression 260, and this first vacuum hole 255 is communicated in this depression 260, and this first vacuum hole 255 of the present embodiment is located at this side surface 250a.

Separately refer to Fig. 2 C, optical detection apparatus at the light-emittingdiode of the present embodiment is to comprise several first vacuum hole 255, and it is separate with partition wall 256 phase between adjacent two the first vacuum holes 255, these several first vacuum holes 255 are arrangements and are located on this supporter 250, and respectively this first vacuum hole 255 can be a circle and have an aperture such as about 2mm；And in other embodiments of this creation, the first vacuum hole 255 is to comprise width to be about a rectangle pore of 2mm, this rectangle pore is to be located on this supporter 250.

Refer to Fig. 2 D and 2E, this uses schematic diagram for this light-emittingdiode optical detection apparatus creating an embodiment.Being wherein that plural number light-emittingdiode 270 to be detected is attached at film spreading 280, film spreading 280 is to clamp internal ring 262A to be jointly fixed on supporter 250 with clamping outer shroud 262B.Film spreading 280 used in the present embodiment, its material is blue film, and according in the embodiment of this creation, the material of film spreading 280 can be selected for tunica albuginea, solves glued membrane (UVreleasetape) or poly-polyethylene terephthalate (PET).In addition, for making the light-emittingdiode 270 receipts angular when measuring become big, can first through expand light-emittingdiode 270 that brilliant step makes film spreading 280 surface plural number to be detected each other within a predetermined distance apart from one another by after, it is fixed between clamping internal ring 262A and clamping outer shroud 262B again, then again clamping internal ring 262A is placed in carrier 210 with clamping outer shroud 262B.By the air extractor (not shown) being communicated in this first vacuum hole 255, first vacuum hole 255 of supporter 250 is bled, the air between plummer 240 and film spreading 280 is made to be pulled out, and then make the film spreading 280 containing a plurality of light-emittingdiode to be detected 270 because being entirely adsorbed in plummer 240 surface by negative pressure, as shown in Figure 2 E.

nullRefer to Fig. 2 A，When the optical detection using optical detection apparatus 200 to carry out light-emittingdiode，This light receiving device 220 is arranged towards the first surface 240a or second surface 240b of this plummer 240，And be energized one by one with a survey device 290 and just to flow to each light-emittingdiode 270 surface、Negative electrode 275A、275B，Sequentially to light each light-emittingdiode crystal grain 270，And make the light transmission that the light-emittingdiode 270 in detection sends receive light end 225 to enter in light receiving device 220，Finally the light collected by light receiving device 220 is sent to optical detector 230 again that be connected with light receiving device 220 carries out subsequent optical detection，This optical detector 230 can be a spectrogrph，It can be two probes that this point surveys device 290，The anelectrode 275A and negative electrode 275B of light-emittingdiode 270 it is connected to when detection.When this light-emittingdiode is crystal covering type light-emitting diode, the receipts light end 225 of this light receiving device 230 is directed towards this second surface 240a and arranges, and this plummer 240 is transparent, make what crystal covering type light-emitting diode sent just to penetrate downwards plummer 240, it is positioned at the light receiving device 220 below this plummer 240 with detection with arrival, and when this light-emittingdiode 270 is horizontal or vertical light-emitting diode, then this light receiving device 220 can towards the first surface 240a or second surface 240b of this plummer 240, with carry out in suitable direction receive light.

Embodiment two:

Below in conjunction with Fig. 3 A and 3B, a kind of carrier generalized section being applicable to the light-emittingdiode optical detection apparatus according to this creation embodiment two is described.

First, refer to Fig. 3 A, it is shown that the carrier 310 of another optical detection apparatus being applicable to the light-emittingdiode according to this creation embodiment two.Carrier 310 is on the whole similar to the carrier 210 of embodiment one, all includes plummer 340 and a supporter 350 support bearing platform 340.It is relative with this second surface 340b that this plummer 340 has an a first surface 340a and second surface 340b, this first surface 340a, and this first surface 340a carries light-emittingdiode to be measured.The material of this plummer 340 can be transparent or opaque, and the material of the plummer 340 in the present embodiment is made up of suprasil, and according in other embodiments of this creation, the material of plummer 340 also can be selected for transparent acryl or glass.

This supporter 350 is around plummer 340 and has a protuberance 351, this protuberance 351 is the first surface 340a protruding from this plummer 340, the protuberance 351 of this supporter 350 is made jointly to define a depression 360 with the first surface 340a of this plummer 340, this protuberance 351 has a side surface 350a, side surface 350a is directed towards and is surrounded on this depression 360, and this first vacuum hole 255 is located at this side surface 350a and towards this depression 360 and be communicated in this depression 360.This protuberance 351 of the present embodiment separately comprises a upper surface 350b, this upper surface 350B convexedly stretches in this plummer 340 and the surface away from this first surface 340a, and this upper surface 350b is connected with this side surface 350a, the supporter 350 of the present embodiment is except the first vacuum hole 355A having the side surface 350a being located at this protuberance 351, it is additionally provided with the second vacuum hole 355B, and this second vacuum hole 355B is located at the upper surface 350b of this protuberance 351.In one embodiment, this supporter 350 is provided with several first vacuum hole 355A and/or several second vacuum hole 355B, and first the pore size of vacuum hole 355A and/or the second vacuum hole 355B be about 2mm, and according in other embodiments of this creation, there is between two adjacent first vacuum hole 355A and/or two adjacent second vacuum hole 355B a partition wall (not shown), and several first vacuum hole 355A and/or the second vacuum hole 355B is around this depression 360.

Refer to shown in Fig. 3 B, when utilizing this to create the detection of the light-emittingdiode optical detection apparatus of an embodiment, a surface is first provided to include the film spreading 380 of plural number light-emittingdiode 370 to be detected, and it is fixed between clamping internal ring 362A and clamping outer shroud 362B, then again clamping internal ring 362A is placed on carrier 310 with clamping outer shroud 362B, and clamping internal ring 362A is surrounded on outside supporter 350 with clamping outer shroud 362B.The present embodiment is provided with the second vacuum hole 355B in supporter 350 and is able to improve surface and includes the film spreading 380 of plural light-emittingdiode to be detected 370 by the negative-pressure adsorption rate of adsorption to plummer 340 and the uniformity.In addition, for making the light-emittingdiode 370 receipts angular when measuring become big, can first through expand brilliant formality make film spreading 380 surface plural number detection light-emittingdiode 370 each other within a predetermined distance apart from one another by after, it is fixed between clamping internal ring 362A and clamping outer shroud 362B again, then again clamping internal ring 362A is placed on carrier 310 carries out subsequent optical measurement with clamping outer shroud 362B.

nullThen，By the air extractor (not shown) being connected with supporter 350, the first vacuum hole 355A and the second vacuum hole 355B of supporter 350 are bled，The air between plummer 340 and film spreading 380 is made to be pulled out，And then make the film spreading 380 containing plural light-emittingdiode to be detected 370 be adsorbed in the first surface 340a of plummer 340 equably by negative pressure，Then just each light-emittingdiode 370 surface is being connected one by one with a survey device 390 again、Negative electrode 375A、375B，Sequentially light each light-emittingdiode 370，And make the light that the light-emittingdiode 370 in detection sends penetrate downwards plummer 340，For another example as described in embodiment one，Enter position light receiving device (not shown) below carrier 310 and the optical detector (not shown) being connected with light receiving device，Carry out subsequent optical detection.

Embodiment three:

Below in conjunction with Fig. 4 A～4B, a kind of carrier generalized section being applicable to the light-emittingdiode optical detection apparatus according to this creation embodiment three is described.

First, refer to Fig. 4 A, it is shown that another carrier 410 being applicable to the light-emittingdiode optical detection apparatus according to this creation embodiment three.Carrier 410 is on the whole similar to the carrier 210 of embodiment one, all include plummer 440 and a supporter 450 support bearing platform 440, this plummer 440 has an a first surface 440a and second surface 440b, this first surface 440a is relative with this second surface 440b, and this first surface 440a carries light-emittingdiode to be measured.The material of this plummer 440 can be transparent or opaque, and the material of the plummer 440 in the present embodiment is made up of suprasil, and according in other embodiments of this creation, the material of plummer 440 also can be selected for transparent acryl or glass.

This supporter 450 is around plummer 440 and has a protuberance 451, this protuberance 451 is the first surface 440a protruding from this plummer 440, make the protuberance 451 of this supporter 450 jointly define a depression 460 with the first surface 440a of this plummer 440, and one the 3rd vacuum hole 455C is provided on this supporter 450.In details of the words, this supporter 450 is to have body 452 and an extension 453, this protuberance 451 is provided at this body 452, this extension 453 is connected to this body 452 and the direction towards plummer 440 extends, making to be connected with this extension 453 between this body 452 with this plummer 440, make this body 452 separate a gap 454 with this plummer 440, this gap 454 is connected with this depression 460, wherein, one the 3rd vacuum hole 455C is located at this extension 453 and is communicated in this depression 460.

In addition, the carrier 410 of the present embodiment has several 3rd vacuum hole 455C, and the gap of adjacent two the 3rd vacuum hole 455C is provided with a partition wall (not shown), and several 3rd vacuum hole 455C is located on the outer peripheral edge of this plummer 440, the pore size of the 3rd vacuum hole 455C is about 2mm；And according in other embodiments of this creation, this carrier 410 is provided only with a 3rd vacuum hole 455C, and the 3rd vacuum hole 455C is located on the outer peripheral edge of this plummer 440, and the 3rd vacuum hole 355C presents width and is about the slot shape of 2mm.

Refer to shown in Fig. 4 B, when utilizing this to create the detection of the light-emittingdiode optical detection apparatus of an embodiment, a surface is first provided to include the film spreading 480 of plural light-emittingdiode to be detected 470, and it is fixed between clamping internal ring 462A and clamping outer shroud 462B, again clamping internal ring 462A is placed on carrier 410 with clamping outer shroud 462B, and clamping internal ring 462A is surrounded on outside supporter (holder) 450 with clamping outer shroud 462B.In addition, for making the light-emittingdiode 470 receipts angular when measuring become big, can first through expand brilliant formality make the plural number light-emittingdiode 470 to be detected on film spreading 480 surface each other within a predetermined distance apart from one another by after, it is fixed on again between clamping internal ring 462A and clamping outer shroud 462B, is then placed on carrier 410 again and carries out subsequent optical measurement.

Then, by an air extractor (not shown) being connected with supporter 450, the 3rd vacuum hole 455C is bled, the air between plummer 440 and film spreading 480 is made to be pulled out, and then make to contain plural number light-emittingdiode 470 film spreading to be detected 480 and be adsorbed in plummer 440 surface by negative pressure equably, then just each light-emittingdiode 470 surface is being connected one by one with a survey device 490 again, negative electrode 475A, 475B, light each light-emittingdiode 470, and make the light that light-emittingdiode 470 sends penetrate downwards plummer 440, for another example as described in embodiment one, enter position light receiving device (not shown) below carrier 410 and the optical detector (not shown) being connected with light receiving device, carry out subsequent optical detection.

Embodiment four:

Illustrate according to the plummer schematic diagram in the carrier of the light-emittingdiode optical detection apparatus of this creation embodiment four below in conjunction with Fig. 5 A～5B.

First, refer to Fig. 5 A, top view when this is utilize the plummer 540 of this creation embodiment four to measure light-emittingdiode 570 to be detected, plummer 540 goes for the carrier 210,310,410 of the light-emittingdiode optical detection apparatus in embodiment one to three, and replaces the plummer 240,340,440 of its correspondence.This plummer 540 includes a kind of material controlling light penetration, the transmittance making the partially or fully region of this plummer 540 has adjustable degeneration, such as when measuring light-emittingdiode 570 to be detected, this plummer 540 comprises a first area 541 and a second area 542 around this first area 541.The transmittance of this first area 541 and/or this second area 542 is that this plummer 540 of the present embodiment is to have the second area 542 around first area 541 by physical quantity modulation respectively.In detail, when measuring the light-emittingdiode 570 of side to be checked, several light-emittingdiodes 570 to be detected are the first areas 541 that correspondence is positioned at this plummer 540.The material of this plummer 540 can include liquid crystal, electrochromism material or liquid metal, the physical quantity changing the transmittance of this plummer 540 can be electrically or thermally etc., in the present embodiment, it is separate with an aisle d1 between adjacent light-emittingdiode to be detected 570, and the material of this plummer 570 comprises liquid crystal.

Refer to shown in Fig. 5 B, this attaches the axonometric chart of plummer 540 of film spreading 580 of a light-emittingdiode 570 to be detected including a plurality of spaced-apart relation for the surface shown in Fig. 5 A.As described in above example, for making the light-emittingdiode 570 receipts angular when measuring become big, first separated from each other with aisle d1 each other through expanding the plural number light-emittingdiode to be detected 570 that brilliant formality makes film spreading 580 surface, then carry out subsequent optical detection.

Plummer 540 surface of the present embodiment is pasted with the film spreading 580 of a light-emittingdiode to be detected 570 including a plurality of spaced-apart relation, and each light-emittingdiode 570 is respectively provided with positive and negative electrode 575A, a 575B.After film spreading 580 is attracted to the first surface 540a of plummer 540, it is the position first positioning light-emittingdiode 570 to be detected, is beneficial to follow-up this plummer 540 be divided into this first area 541 and this second area 542；Then, change the transmittance of this plummer 540, make this first area 541 have the transmittance different from this second area 542, and several light-emittingdiode 570 and aisle d1 are contained in this first area 541, make several light-emittingdiode 570 and aisle d1 correspondence be positioned on first area 541；And measure the characteristic of giving out light of this light-emittingdiode 570 being placed in this first area 541.

The optical detecting method of the light-emittingdiode of the present embodiment is the image first putting the plummer 540 having this light-emittingdiode 570 by scanning, after positioning the position of the light-emittingdiode 570 to be detected on film spreading 580, by controlling the orientation of liquid crystal molecule in plummer 540, the plummer 540 contained below the first area 541 of several light-emittingdiode 570 to be detected and several aisle d1 is made to be transformed into a transparent area, the liquid crystal molecule of all the other second areas 542 being not covered by light-emittingdiode 570 does not then change orientation, and form this second area 542 from this first area 541 with different light transmittance.In the present embodiment, the light transmittance of this first area 541 is above the light transmittance of this second area 542.Then survey device 590 with the point arranged towards this plummer 540 sequentially to contact positive and negative electrode 575A, 575B of each light-emittingdiode 570 and detect, the light penetration first area 541 that light-emittingdiode 570 to be detected sends, for another example as described in embodiment one, enter position light receiving device (not shown) thereunder and the photodetector (not shown) being connected with light receiving device, carry out subsequent optical detection.Wherein, during the light-emittingdiode crystal grain 570 that detecting position is located around, because contiguous other LEDs 570 reflects the detection error caused, can be compensated for by the reflection light of position second area 542 around first area 541, position each light-emittingdiode to be detected 570 on film spreading 580 is made to have identical or close detection environment, avoid, when measuring light-emittingdiode 570 characteristics of luminescence, causing error in measurement excessive because the position of light-emittingdiode 570 is different.According to, in other embodiments of this creation, material also optional electrochromism material or the liquid metal etc. of light penetration being controlled.

Embodiment five:

Illustrate according to the plummer schematic diagram in the carrier of the light-emittingdiode optical detection apparatus of this creation embodiment five below in conjunction with Fig. 6 A～6B.

First, refer to Fig. 6 A, top view when this is utilize the plummer 640 of this creation embodiment five to measure light-emittingdiode 670 to be detected, this plummer 640 goes for the carrier 210,310,410 of the light-emittingdiode optical detection apparatus in embodiment one to three, and replaces the plummer 240,340,440 of its correspondence.The plummer 640 of the present embodiment is similar to the plummer 540 of embodiment four, this plummer 640 includes a kind of material controlling light penetration, make its partially or fully region transmittance have adjustable degeneration, such as when measuring light-emittingdiode 670 to be detected, this plummer 640 comprises first area 641 and a second area 642, when measuring light-emittingdiode 670 to be detected, to adjust the transmittance of first area 641 and/or this second area 642 by a physical quantity.The material of this plummer 640 can include liquid crystal, electrochromism material or liquid metal, and the physical quantity wherein changing the transmittance of this plummer 640 can be electrically or thermally etc..Only, the difference of the present embodiment and above-described embodiment four is in that: during detection, single light-emittingdiode 670 to be detected is only contained in the first area 641 of this plummer 640, imply that only one light-emittingdiode 670 to be detected is that correspondence is positioned at this first area 641, such as the light-emittingdiode 670 of the most lower-left of Fig. 6 A.

Refer to Fig. 6 B, this attaches the axonometric chart of plummer 640 of film spreading of a light-emittingdiode 670 to be detected including a plurality of spaced-apart relation for the surface shown in Fig. 6 A.The method carrying out optical measurement through the plummer 640 of embodiment five comprises: be placed on this plummer 640 by several light-emittingdiodes 670；Position the position of this light-emittingdiode 670；Change the transmittance of this plummer 640, this plummer 640 is made to divide into first area 641 and a second area 642, a light-emittingdiode 670 to be detected is only contained in this first area 641, and wherein this first area 641 is transparent area and has the transmittance transmittance higher than this second area 642；And measure the characteristic of giving out light of this light-emittingdiode 670 being placed in this first area 641.The plummer 640 of embodiment five is to comprise liquid crystal material, and changes the transmittance of this first area 641 and/or this second area 642 through applying voltage.

The optical detecting method of the light-emittingdiode of the present embodiment is the image first putting the plummer 640 having this light-emittingdiode 670 by scanning, after positioning the position of the light-emittingdiode 670 several to be detected on film spreading 680, by controlling the orientation of liquid crystal molecule in plummer 640, the plummer 640 contained below the region of a light-emittingdiode 670 to be detected is made to be transformed into this transparent area, the liquid crystal molecule in all the other regions being not covered by light-emittingdiode 670 does not then change orientation, and form this second area 642 from this first area 641 with different light transmittance.In the present embodiment, the light transmittance of this first area 641 is above this second area 642.Then with a survey device 690 contact positive and negative electrode 675A, 675B of each light-emittingdiode 670 detect time, the light penetration first area 641 that light-emittingdiode 670 to be detected sends, for another example as described in embodiment one, enter position light receiving device (not shown) thereunder and the optical detector (not shown) being connected with light receiving device, carry out subsequent optical detection.Wherein, during the light-emittingdiode crystal grain 670 that detecting position is located around, because of the detection error that the luminous reflectance of contiguous other LEDs crystal grain 670 causes, can be compensated for by the reflection light of position second area 642 around first area 641, position each light-emittingdiode to be detected 670 on film spreading 680 is made to have identical or close detection environment, avoid, when measuring light-emittingdiode 670 characteristics of luminescence, causing error in measurement excessive because the position of light-emittingdiode 670 is different.

The method of the optical characteristics measurement that this plummer 640 utilizing the present embodiment carries out light-emittingdiode 670 is similar to the 4th embodiment, and Main Differences is in that the position of the first area 641 of the plummer 640 of the present embodiment is as the position at different light-emittingdiode 670 place measuring target and changes.nullIn detail，This plummer 640 is there is several light-emittingdiode 670，The first light-emittingdiode 671 as shown in Figure 6A、Second light-emittingdiode 672 and the 3rd light-emittingdiode 673 etc.，The optical characteristics method for measurement of the light-emittingdiode of the present embodiment is sequentially to measure above-mentioned first respectively、Second and third light-emittingdiode 671、672、673，For example，When measuring the optical characteristics of the first light-emittingdiode 671，It it is the position of the first area 641 adjusting plummer 640，Make first area 641 correspondence be positioned at the first light-emittingdiode 671 and second area 642 then correspondence is positioned at all the other light-emittingdiodes，Making the plummer 641 below the first light-emittingdiode 671 only to be detected is transparent area，To avoid contiguous other LEDs 670 (such as 672、673) reflection is caused to produce unintended impact the optical characteristics measurement of the first light-emittingdiode 671，Thereby further promote accuracy of measurement.In like manner, when being intended to measure the second light-emittingdiode 672, three light-emittingdiodes 673, then adjust the position of the first area 641 of plummer 640, first area 641 correspondence is made to be positioned at the second light-emittingdiode 672 or the 3rd light-emittingdiode 673, and second area 642 then correspondence is positioned at all the other light-emittingdiodes 670, make to have around the light-emittingdiode 670 measured identical or close detection environment.

Embodiment six:

Illustrate according to the plummer schematic diagram in the carrier of the light-emittingdiode optical detection apparatus of this creation embodiment six below in conjunction with Fig. 7 A～7C.

First, refer to Fig. 7 A, top view when this is utilize the plummer 740 of this creation embodiment six to measure light-emittingdiode 770 to be detected, this plummer 740 goes for the carrier 210,310,410 of the light-emittingdiode optical detection apparatus as described in embodiment one to three, and replaces the plummer 240,340,440 of its correspondence.The plummer 740 of the present embodiment is similar to the plummer 540 or 640 of embodiment four or five, this plummer 740 includes a kind of material controlling light penetration, make its partially or fully region transmittance have adjustable degeneration, with when measuring light-emittingdiode 770 to be detected, the transmittance of first area 741 and/or this second area 742 is adjusted by a physical quantity, the material of this plummer 740 can include liquid crystal, electrochromism material or liquid metal, and the physical quantity changing the transmittance of this plummer 740 can be electrically or thermally etc..

Refer to Fig. 7 B, this attaches the three-dimensional side view of plummer 740 of film spreading 780 of a light-emittingdiode 770 to be detected including a plurality of spaced-apart relation for the surface shown in Fig. 7 A.Refer to shown in Fig. 7 C, the plummer 740 of the present embodiment is similar to above-described embodiment four or five, only the plummer 740 of the present embodiment separately comprises a reflecting layer 783, and the light radiated by light-emittingdiode 770 through a light-guide device 784 is collected and delivered in light receiving device 720.In detail, this plummer 740 comprises a first surface 740a and the second surface 740b relative to this first surface 740a, this first surface 740a carries light-emittingdiode 770 to be detected, this reflecting layer 783 is provided on this second surface 740b, and there is between this reflecting layer 783 and this second surface 740b a reflection cavity 781, and this light-guide device 784 has a light harvesting end 784a, this light harvesting end 784a is the reflection cavity 781 being incorporated into this carrier 740.Wherein, reflecting layer 783 is made up of the material of tool high reflectance, and this enforcement is barium sulfate from the material of selected high reflectance.Additionally, according in other embodiments of this creation, this reflecting layer 783 also may select material or Bragg mirror (DBR) structures etc. such as silver, aluminum.The method carrying out optical measurement through the plummer 740 of embodiment six comprises: be placed on this plummer 740 by several light-emittingdiodes 770；Position the position of this light-emittingdiode 770；Change the transmittance of this plummer 740, this plummer 740 is made to divide into first area 741 and a second area 742, one or several light-emittingdiode 770 are contained in this first area 741, and wherein this first area 741 is transparent area and has the transmittance higher than this second area 742；And measure the characteristic of giving out light of this light-emittingdiode 770 being placed in this first area 741.The plummer 740 of the present embodiment is to comprise liquid crystal material, and changes the transmittance of this first area 741 and/or this second area 742 through applying voltage.

The optical detecting method of the light-emittingdiode of the present embodiment is the image first putting the plummer 740 having this light-emittingdiode 770 by scanning, behind the position of the light-emittingdiode 770 several to be detected on positioning confirmation film spreading 780, by controlling the orientation of liquid crystal molecule in plummer 740, the plummer 740 contained below the region of one or more light-emittingdiodes to be detected 770 is made to be transformed into the first area 741 of printing opacity, the liquid crystal molecule in all the other regions being not covered by light-emittingdiode 770 does not then change orientation, and form this second area 742 from this first area 741 with different light transmittance.In the present embodiment, the light transmittance of this first area 741 is above this second area 742.Refer to shown in Fig. 7 C, then with a survey device 790 sequentially contact positive and negative electrode 775A, 775B of each light-emittingdiode 770 detect time, the light penetration first area 741 that light-emittingdiode 770 to be detected sends enters this reflection cavity 781, light reflects effectively by reflection cavity 781 and reflecting layer 783, make ray guidance be collected and fed in this light receiving device 720 to the light harvesting end 784a of light-guide device 784, then carry out subsequent optical detection through optical detector 730.Wherein, detecting position is when the light-emittingdiode crystal grain 770 at edge, because contiguous other LEDs crystal grain 770 reflects the environmental difference caused, can be compensated for by the reflection of position second area 742 around first area 741, position each light-emittingdiode to be detected 770 on film spreading 780 is made to have identical or close detection environment, avoid, when measuring light-emittingdiode 770 characteristics of luminescence, causing error in measurement excessive because the position of light-emittingdiode 770 is different.

Embodiment seven, eight:

The schematic diagram of the light-emittingdiode optical detection apparatus according to this creation embodiment seven and eight is described below in conjunction with Fig. 8 A-8C.

Fig. 8 A discloses the light-emittingdiode optical detection apparatus 800 of this creation embodiment seven, includes carrier 210, light receiving device 820 and an optical detector 830 described in major part component such as embodiment one.Wherein, this carrier 210 comprises a plummer 240, and this plummer 240 is provided with a first surface 240a and the second surface 240b relative to this first surface 240a, and this first surface 240a is the light-emitting area 271 carrying light-emittingdiode 270 to be detected；This light receiving device 820 has a receipts light end 825 and and goes out light end 826, and this receipts light end 825 is directed towards the second surface 240b of plummer 240 and arranges, and to collect the light that this light-emittingdiode 270 sends, and is gone out light end 826 by this and is sent to this optical detector 830；This optical detector 830 is coupled to this light receiving device 820, to detect the light collected by this light receiving device 820.This light-emittingdiode optical detection apparatus 800 separately comprises a wavelength conversion member 850, and this wavelength conversion member 850 is provided at the light-emitting area 271 of this light-emittingdiode 270 to be detected and going out between light end 826 of this light receiving device 820.This Wavelength changing element 850 of the present embodiment is provided between receipts light end 825 and the second surface 840b of plummer 840 of light receiving device 820, and it is preferred that this Wavelength changing element 850 is incorporated into the receipts light end 825 of this light receiving device 820 removably.

Refer to shown in Fig. 8 B, the schematic diagram of this light-emittingdiode optical detection apparatus being this creation embodiment eight, the light-emittingdiode optical detection apparatus 800 ' of embodiment eight is substantially identical with the light-emittingdiode optical detection apparatus 800 of embodiment seven, there is carrier 210, light receiving device 820, optical detector 830 and a wavelength conversion member 850, difference is in that what the wavelength conversion member 850 of embodiment eight was provided in light receiving device 820 goes out light end 826, and it is preferred that this wavelength conversion member 850 be incorporated into this light receiving device 820 removably go out light end 826.

This wavelength conversion member 850 is the light (such as blue light) making light-emittingdiode 270 be sent tool first wave length, part is by Wavelength changing element 850 light (such as gold-tinted, HONGGUANG or green glow) being converted into tool second wave length, and the light with first, second wavelength mixes to form white light.There is the optical detection apparatus 800,800 ' of the light-emittingdiode of this Wavelength changing element 850, it it is the characteristics of luminescence of the light-emittingdiode packaging body that the simulation luminous diode 270 of energy is formed at addition fluorescent material and colloid encapsulation, by measuring the specification after whether the assessment characteristics of luminescence meets encapsulation before encapsulation in advance, to reach to increase customer satisfaction degree and reduce the effects such as customer complaint rate.

In above-described embodiment seven, eight, Wavelength changing element 850 comprises fluorescent powder film, and Wavelength changing element 850 can optionally be designed to the replaceable form of lamellar or tabular, make the first wave length light that light-emittingdiode 270 sends can obtain, after by different Wavelength changing elements 850, the light having different second wave lengths.In addition, in one embodiment, Wavelength changing element 850 comprises a first wave length bridgeware 850A of tool the first radiation wavelength, and a second wave length bridgeware 850B of tool the second radiation wavelength, this first wave length bridgeware 850A and this second wave length bridgeware 850B can be excited by giving out light of light-emittingdiode 270, and the first radiation wavelength is with second to radiate wavelength different.Specifically, this Wavelength changing element 850 can also be a rotary-disk type structure as shown in Figure 8 C, this Wavelength changing element 850 includes a plurality of first wave length bridgeware 850A with different radiation wavelength, second wave length bridgeware 850B, 3rd wavelength conversion member 850C, 4th wavelength conversion member 850D, 5th wavelength conversion member 850E and the 6th wavelength conversion member 850F, and this Wavelength changing element 850 is rotatably to have selected required wavelength conversion member 850 para-position be incorporated into this receipts light end 825 of this light receiving device 820 or go out light end 826, make this Wavelength changing element 850 can be sent the light of tool first wave length by light-emittingdiode 270 to excite and produce the light having different second wave length.

The light-emittingdiode 270 of the present embodiment is unencapsulated, for instance for LED Chips for Communication or crystal grain, and characteristic of giving out light after encapsulating with simulation luminous diode 270 in advance through Wavelength changing element 850.And the Wavelength changing element 850 shown in Fig. 8 C includes a plurality of have different radiation the first wave length bridgeware 850A of wavelength, second wave length bridgeware 850B and the 3rd wavelength conversion member 850C etc., when be intended to encapsulation condition that simulation luminous diode 270 comprises different wave length bridgeware give out light characteristic time, only need to make corresponding wavelength conversion member 850A, 850B or 850C etc. be pointed to out light end 825 or receive light end 826, need not dismount and change wavelength conversion member, to improve testing efficiency.

Though additionally, embodiment seven, eight illustrates with the carrier 210 shown in embodiment one, but carrier 210 can also replace according to the carrier that the embodiment two to six of this creation is disclosed, does not repeat them here.

Embodiment nine:

The schematic diagram of a kind of light-emittingdiode optical detection apparatus according to this creation embodiment nine is described below in conjunction with Fig. 9.

nullThe light-emittingdiode optical detection apparatus 800 of embodiment nine "，Its structure on the whole with above-described embodiment seven、The light-emittingdiode optical detection apparatus 800 of eight、800 ' is roughly the same，Main Differences is in that the light-emittingdiode optical detection apparatus 800 of the present embodiment " Wavelength changing element 850 be disposed on plummer 240，Wavelength changing element 850 can be incorporated into the first surface 240a or second surface 240b of plummer 240，For example，When Wavelength changing element 850 is incorporated into first surface 240a，The light-emitting area 271 making light-emittingdiode 270 is sent the light (such as blue light) of tool first wave length，Part is converted into light (the such as gold-tinted of tool second wave length by Wavelength changing element 850、HONGGUANG or green glow)，And then after by plummer 240，Make light receiving device 820 to collect and have first、The light (such as white light) of the light mixing of second wave length，Then analyzed further by optical detector 830 again.The plummer 240 of the present embodiment is have high-penetration degree for the light of first wave length and second wave length.

Wavelength changing element 850 comprises fluorescent powder film as described in embodiment seven, eight, additionally, Wavelength changing element 850 can also select to comprise several wavelength conversion member (850A～850F) as shown in Figure 8 C；Carrier 210 can also replace according to the carrier that the embodiment two to six of this creation is disclosed, does not repeat them here.

Embodiment ten:

Schematic diagram below in conjunction with Fig. 8 B, 10 a kind of light-emittingdiode optical detection apparatus according to this creation embodiment ten of explanation.

Shown in Fig. 8 B, the light-emittingdiode optical detection apparatus of the present embodiment includes just like carrier 210, light receiving device 820 shown in embodiment eight (Fig. 8 B) and an optical detector 830.Each components such as carrier 210, light receiving device 820 and optical detector 830 are as described in above-described embodiment eight, only the light-emittingdiode optical detection apparatus of the present embodiment separately comprises light-guide device 884 and an adjustment element 860, and light receiving device 820 and optical detector 830 are through light-guide device 884 and couple mutually.The light-guide device 884 of the present embodiment and adjust that element 860 is incorporated into light receiving device 820 go out light end 826, light-guide device 884 is exemplified as optical fiber etc., and adjust element 860 be preferably movably be incorporated into this light receiving device 820 go out light end 826.

Please referring additionally to shown in Figure 10, this adjustment element 860 comprises main body 861,1 first perforate 862,1 second perforate 863,1 first light modulation part 864 and an one second light modulation part 865, and this first light modulation part 864 and this second light modulation part 865 are that the optical detection apparatus of this light-emittingdiode is can to pass through this adjustment element 860 to adjust the light intensity being entered this optical detector 830 by the radiating light of light-emittingdiode to be measured respectively in connection with in this first perforate 862 and this second perforate 863.For example, in one embodiment, the size of this first perforate 862 and this second perforate 863 is different, in another embodiment, this first light modulation part 864 and this second light modulation part 865 are to have different light transmittances, control to enter into the light quantity of optical detector 830 with the light transmittance through the size of those perforates 862,863 or those light modulation parts 864,865.The main body 861 adjusting element 860 of the present embodiment be incorporated into this light receiving device 820 rotationally go out light end 826, to pass through the main body 861 rotating this adjustment element 860, what this first perforate 862 or the second perforate 863 (i.e. the first light modulation part 864 or the second light modulation part 865) were optionally pointed to this light receiving device 820 goes out light end 826, thereby changes the light intensity being entered into this optical detector 830 by this light receiving device 820 through light-guide device 884.It addition, this adjustment element 860 can also be additionally provided with several perforate and several light modulation part, the perforate of this adjustment element 860 and the number of light modulation part are not limited with the present embodiment.

Except passing through the adjustment element 860 being movably incorporated into this light receiving device 820, another embodiment is then by the distance going out light end 826 controlling light-guide device 884 and light receiving device 820, to change the light intensity entering optical detector 830 through light-guide device 884.In detail, (refer to Fig. 8 B) in one embodiment, light-guide device 884 has a light harvesting end 884a, light harvesting end 884a be movably coupled to light receiving device 820 go out light end 826, enable the light-emittingdiode optical detection apparatus of the present embodiment through changing light harvesting end 884a and this distance going out light end 826, adjust and input the light quantity to optical detector 830 through light-guide device 884.

When the light-emittingdiode optical detection apparatus using the present embodiment measures the optical characteristics of different light-emittingdiode, owing to the brightness of different light-emittingdiodes has drop, for avoiding the brightness of light-emittingdiode to be measured to exceed the ultimate value that optical detector 830 can read, can pass through to rotate or move before measurement and adjust element 860 or light-guide device 884, adjust the follow-up light intensity entering into optical detector 830, thereby save and need to change hard ware for measuring the sample of different brightness or set up manpower and the time cost of software parameter, to reach to increase board utilization rate, and save the effects such as engineering staff correction time.

Although this creation is disclosed above with preferred embodiment, so it is not limited to this creation, has usually intellectual in any art, without departing from the spirit and scope of this creation, when changing and combine above-mentioned various embodiments.

Claims (10)

1. an optical detection apparatus for light-emittingdiode, including:

One plummer, in order to carry a light-emitting area of a light-emittingdiode to be detected；

One light receiving device, comprises a receipts light end and and goes out light end, and this receipts light end is directed towards this plummer and arranges；And

One Wavelength changing element, is located at the light-emitting area of this light-emittingdiode to be detected and going out between light end of this light receiving device.

2. the optical detection apparatus of light-emittingdiode according to claim 1, wherein this Wavelength changing element be arranged at this light receiving device receive light end or this light receiving device go out light end.

3. the optical detection apparatus of light-emittingdiode according to claim 2, wherein this Wavelength changing element is incorporated into this receipts light end of this light receiving device removably maybe this goes out light end.

4. the optical detection apparatus of light-emittingdiode according to claim 1, wherein this Wavelength changing element includes a first wave length bridgeware and a second wave length bridgeware, this first wave length bridgeware and this second wave length bridgeware and has different radiation wavelength.

5. the optical detection apparatus of light-emittingdiode according to claim 4, wherein this Wavelength changing element is movably to be incorporated into this receipts light end of this light receiving device maybe this goes out light end, so that this first wave length bridgeware or this second wave length bridgeware are pointed to this receipts light end, maybe this goes out light end.

6. the optical detection apparatus of light-emittingdiode according to claim 1, wherein this plummer has a first surface and a second surface relative with this first surface, this first surface is to carry this light-emittingdiode to be detected, and this plummer is transparent, this Wavelength changing element is the first surface or this second surface that are incorporated into this plummer.

7. the optical detection apparatus of light-emittingdiode according to claim 1, separately comprise an optical detector, a light-guide device and adjusts element, this optical detector is coupled to this light receiving device, and this light-guide device and this adjustment element be located at this light receiving device go out light end, to be adjusted into the light quantity of this optical detector through this light-guide device and/or this adjustment element.

8. the optical detection apparatus of light-emittingdiode according to claim 7, wherein this adjustment element comprises one first light modulation part and one second light modulation part, this first light modulation part and this second light modulation part and there is different light transmittances, what this adjustment element was movably incorporated into this light receiving device goes out light end, so that this first light modulation part or this second light modulation part are pointed to this and go out light end.

9. the optical detection apparatus of light-emittingdiode according to claim 7, wherein this light-guide device has a light harvesting end, this light harvesting end be movably coupled to light receiving device go out light end.

10. the optical detection apparatus of light-emittingdiode according to claim 7, this adjustment assembly comprises one first perforate and one second perforate, this first perforate and this second perforate have different size, what this adjustment element was movably incorporated into this light receiving device goes out light end, so that this first perforate or this second perforate are pointed to this and go out light end.