CN102645736B - Optical input equipment and transmission type optical lens module of optical input equipment - Google Patents
Optical input equipment and transmission type optical lens module of optical input equipment Download PDFInfo
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- CN102645736B CN102645736B CN201110176808.1A CN201110176808A CN102645736B CN 102645736 B CN102645736 B CN 102645736B CN 201110176808 A CN201110176808 A CN 201110176808A CN 102645736 B CN102645736 B CN 102645736B
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- 230000003287 optical effect Effects 0.000 title claims abstract description 157
- 230000005540 biological transmission Effects 0.000 title abstract 5
- 238000003384 imaging method Methods 0.000 claims abstract description 36
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- 230000035515 penetration Effects 0.000 claims description 14
- 230000000007 visual effect Effects 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 2
- 239000000428 dust Substances 0.000 description 10
- 238000005286 illumination Methods 0.000 description 6
- 239000011521 glass Substances 0.000 description 5
- 239000000919 ceramic Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000004579 marble Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000003973 paint Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
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- 230000001678 irradiating effect Effects 0.000 description 3
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- 206010044565 Tremor Diseases 0.000 description 1
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- 230000007257 malfunction Effects 0.000 description 1
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Abstract
The invention discloses optical input equipment and a transmission type optical lens module of the optical input equipment. The transmission type optical lens module can obtain work surface images and comprises a transmission type illuminating system and an imaging system, wherein the transmission type illuminating system comprises a light source, a collimating lens, a prism and a reflector, the collimating lens is positioned in front of the light source, the prism is provided with a reflecting surface, the imaging system comprises an imaging objective lens and an optical image sensor, light beams sent by the light source are projected onto the reflecting surface after being collimated by the collimating lens, are projected onto the reflector after being reflected by the reflecting surface and are finally projected onto the work surface after being refracted by the reflector, the reflecting light of the work surface enters the optical image sensor for imaging through the imaging objective lens. The optical axis of the imaging objective lens and the optical axis of the illuminating system have a smaller illuminating angle, and the view field region near the optical axis center can be illuminated, so light reflected by the partial mirror surface can easily enter the optical image sensor for imaging.
Description
Technical field
The invention relates to a kind of optical input apparatus and optical lens module thereof.
Background technology
As shown in Figures 2 to 5, wherein label 1 is collimation lens and prism, and label 2 is image-forming objective lens, and label 3 is light emitting diode, and label 4 is optical image sensor, and label 5 is working surface.Optical lens due to existing optical mouse input equipment adopts the mode of oblique illumination, after the turnover of collimation lens before it of light that its light emitting diode 3 sends and prism 1, with one very wide-angle tilt be radiated on working surface 5, as shown in Figure 2, the angle of the optical axis of its incident ray and image-forming objective lens 2 is approximately about 75 °, carries out imaging in light conduction to optical image sensor 4.For the general surface of the not high lights such as wooden, coloured rough surface partly or blank sheet of paper, characteristic due to the reflected light of its working surface is similar to youth uncle scattering, as shown in Figure 3, for the incident light of wide-angle, also reflected light can be produced, by the microstructure on not high glossy surface reflect or diffraction produces diffuse be transmitted to above image-forming objective lens 2 optical image sensor 4 in carry out imaging, computing is fast carried out according to the image that optical image sensor reads, thus the moving direction of the cursor of control inputs equipment.About so-called youth uncle scattering, its intensity of reflected light I (θ) is just relevant with the angle theta of the normal direction perpendicular to working surface 5 (as desktop), can be expressed as: I (θ)=I
0cos (θ), I in formula
0for the light intensity of the normal direction perpendicular to desktop orientation, the scattered light strong compared with high light of youth uncle scattering is the normal direction of reflecting surface, so scattered light can enter into optical image sensor through image-forming objective lens 2 very much.
But for the working surface that some is special, marble surface, the ceramic tile of such as dark colour surface, high brightness are surperficial, the paint face, minute surface, metal polish surface, printing paper, transparent plastic surface, micronic dust transparent glass surface etc. of smoother, because its surface is not irreflexive optical characteristics, traditional optical mouse camera lens just cannot work on these surfaces.Fig. 4 is traditional optical mouse camera lens (such as the marble surface of high brightness on the surface of partial specular reflection, ceramic tile surface, the paint face of smoother, minute surface, metal polish surface, printing paper, transparent plastic surface, micronic dust transparent glass surface etc.) time, because its character of surface is partial specular reflection, namely in reflection ray, major part is mirror-reflection, small part is only had to be scattered light, and the reflection angle of this part diffuse light also has relation with the incident angle size of incident ray, the direction of its most strong reflection light is the direction of mirror-reflection, mirror is become relative to optical axis with incident ray, because the angle of reflection ray is too large, the reflected light of desktop almost can not enter into optical image sensor through image-forming objective lens 2 and carry out imaging, thus optical mouse is as being placed in blind area and cisco unity malfunction.
For completely transparent and definitely smooth, above it without surfaces such as the optical glass of any dust, then because most light directly enters into material, the light of small part is then specularly reflected away, the reflection ray on its surface can not enter into optical image sensor through image-forming objective lens 2 and carry out imaging, and therefore traditional type mouse camera lens can not normally work.
In addition, because of the optical mouse of traditional and current main flow, its illumination mode generally all adopt at a certain angle oblique illumination on working surface, so require that larger space can meet illumination path projection and reflection, make the optics fenestra of this optical mouse lower cover will enough large time it can be made normally to work, as shown in Figure 5, the length of this optics fenestra W about needs 12.5mm.In the course of the work, the optics fenestra of Chang Yinwei input equipment is too large, dust on working surface just enters into the surface of optical device very easily, and cause Genius mouse occur using ineffective, cursor pause stagnant, tremble, the phenomenon such as drift, make the function reduction of optical mouse or cannot normally use.
Summary of the invention
The object of the invention is for the deficiencies in the prior art, provide a kind of and can be operated in high finish surface and optical input apparatus and the penetrating optical lens module thereof in serviceable life can be improved.
For achieving the above object, present invention employs following technical scheme: a kind of penetrating optical lens module of optical input apparatus, the image of working surface can be obtained, comprise penetration illuminator and imaging system, described penetration illuminator comprises light source, be positioned at the collimation lens in described light source front, with prism and the catoptron of reflecting surface, described imaging system comprises image-forming objective lens and optical image sensor, the light beam that described light source sends projects described reflecting surface after described collimation lens collimation, described catoptron is projected after described reflective surface, finally working surface is projected after described catoptron refraction, the reflected light of described working surface enters the imaging of described optical image sensor via described image-forming objective lens.This finally comprises two kinds of situations: the light beam 1) after transmitting mirror refraction directly projects working surface; 2) beam projection after catoptron refraction, to image-forming objective lens, projects working surface again after image-forming objective lens refraction.After catoptron refraction, light beam can through a lower projection surface, and the folded light beam of working surface can penetrate face through a top, and this upper and lower projection surface can be curved surface or plane.This upper and lower projection surface can be the surface of image-forming objective lens, also can be the surface of penetration illuminator.
Described beam projection is-0.3mm (namely launching position is positioned at the left side of this optical axis) ~+1.0mm (namely launching position is positioned at the right side of this optical axis, and catoptron is positioned at the right side of this optical axis) to the distance of the optical axis of the position of described working surface and described image-forming objective lens.
The angle of the light beam and described optical axis that project described working surface is 1 degree ~ 35 degree.
Described reflecting surface is fully reflecting surface.
The light beam projecting described catoptron is parallel with described working surface.
Described image-forming objective lens and described catoptron composite integrated.
Described image-forming objective lens is separated setting with described transmitting mirror, and described image-forming objective lens is positioned at above or below described catoptron.When being positioned at top, the light beam after catoptron refraction directly projects working surface; When being positioned at below, the light beam after catoptron refraction projects working surface again after image-forming objective lens refraction.
Described image-forming objective lens is bifocus or multifocal binary optical elements.
The chief ray of described image-forming objective lens in each visual field of object space is all parallel with the optical axis of image-forming objective lens, the rear focus of the contiguous described image-forming objective lens of its aperture diaphragm.
A kind of optical input apparatus, comprises described penetrating optical lens module.This optical input apparatus is as optical mouse.
The camera lens module of described optical input apparatus, it is except can in irreflexive ordinary desktop such as wooden in major part, coloured uneven surface or blank sheet of paper except normal work, and it normally can also work on the paint face of the marble surface of dark colour surface, high brightness, ceramic tile surface, high light, minute surface, metal polish surface, printing paper, transparent plastic surface, micronic dust transparent glass surface.
The camera lens module of described optical input apparatus, its paraxial illuminator has a catoptron.After the refraction of catoptron thus, be irradiated to the light beam of working surface, its incoming position is the distance range between image-forming objective lens central optical axis-0.30 ~+1.00.
The camera lens module of described optical input apparatus, the catoptron in its illuminator can be designed to have dentation curved surface, Irregular Boundary Surface and plane.
The camera lens module of described optical input apparatus, it can be one or more for the reflecting surface in the prism of leaded light, with the enable catoptron of image-forming objective lens side that is delivered to by light source for principle.The optical axis angle inciding catoptron after prismatic refraction can be level and with certain angle, also can be vertical.
The camera lens module of described optical input apparatus, the prism of its illuminator or catoptron can separate with imaging system, image-forming objective lens can be positioned at top or the below of prism, image-forming objective lens also can be positioned at top or the below of catoptron, and its illuminator and imaging system can be split or one.
The camera lens module of described optical input apparatus, the quantity of fully reflecting surface of the prism of its light path that is used for transferring can increase and decrease as required, light source can be horizontal positioned also can be vertical placement, or place with certain angle, prismatic light guide mode can be able to have multiple according to the set-up mode of light source.
The camera lens module of described optical input apparatus, its imaging system is telecentric system, wherein the chief ray of image-forming objective lens in each visual field of object space is all parallel with the optical axis of image-forming objective lens, its aperture diaphragm position is positioned near the rear focus of image-forming objective lens, and its image-forming objective lens angle that also tiltable is certain is arranged.
The camera lens module of described optical input apparatus, its image-forming objective lens is bifocus or multifocal binary optical (Binary Optics/DOE) element, and wherein image-forming objective lens has a workplace at least for being ring grain diffraction surfaces (English name is Diffractive surface).Image-forming objective lens can adopt binary optical elements (Binary Optics/DOE) to design, imaging can be carried out, in order to solve as on rough working surface and the glass surface of different-thickness carries out the problem of work to the microstructure on the working surface of differing heights.
The camera lens module of described optical input apparatus, it can also have two or more light source, light source respectively from different directions, directs light into through collimation lens and prism respectively and is refracted on working surface on the catoptron of image-forming objective lens optical axis side again.
The camera lens module of described optical input apparatus, its light source can be the light emitting diode of different wave length or be laser diode.
The camera lens module of described optical input apparatus, it can enter into the surface of optical device, with dust-proof function by the dust preventing and reduce on working surface.
The camera lens module of described optical input apparatus, the design of its illuminator can make the light beam of light source be irradiated on working surface so that the angle of less degree (and the angle between optical axis OZ) is paraxial, and projection angle can be between 1 ~ 35 degree.
The invention has the beneficial effects as follows: 1) optical axis of this illuminator and image-forming objective lens has less irradiating angle, and the field of view near optical axis center can be irradiated to, make the light of partial specular reflection be easy to enter into optical image sensor and carry out imaging; 2) because illuminator and optical axis have less irradiating angle, only need very little space just can meet projection and the reflection of illumination path, significantly can reduce the optical window hole dimension of input equipment, make the dust on working surface be difficult to enter into the surface of optical device and achieve dust-proof function, improve usability and life-span.
Accompanying drawing explanation
Fig. 1 is the light path principle figure of optical input apparatus of the present invention;
Fig. 2 is the light path principle figure of existing optical mouse input equipment;
Fig. 3 is the condition diagram that the optical lens of existing optical mouse input equipment is used on not high light diffuse reflection surface;
Fig. 4 is that the optical lens of existing optical mouse input equipment is used in the condition diagram that high glossy surface reflects;
Fig. 5 is the optical lens of existing optical mouse input equipment and the structural representation of optics fenestra;
Fig. 6 is the optical lens module of optical input apparatus of the present invention and the structural representation of optics fenestra;
Fig. 7 is the condition diagram that the optical lens module of optical input apparatus of the present invention is used on not high light diffuse reflection surface;
Fig. 8 is that the optical lens module of optical input apparatus of the present invention is used in the condition diagram that high glossy surface reflects;
Fig. 9 relates to the structural representation of image-forming objective lens above illuminator of the present invention;
Figure 10 relates to the structural representation of image-forming objective lens in the below of illuminator of the present invention;
The structural representation when light source that Figure 11 relates to the present invention is vertically arranged;
Figure 12 is the partial enlarged drawing at P indication place in Fig. 6;
Figure 13 is the stereographic map of penetrating optical lens module of the present invention;
Figure 14 is the stereographic map at another visual angle of penetrating optical lens module of the present invention;
Figure 15 is the front view of penetrating optical lens module of the present invention;
Figure 16 is the cut-open view of Figure 15 along A-A direction;
Figure 17 is the vertical view of penetrating optical lens module of the present invention.
Embodiment
By reference to the accompanying drawings the present invention is described in further detail below by embodiment.
One of them embodiment involved in the present invention is as shown in Fig. 1, Figure 12 to Figure 17, and this penetrating optical lens module contains a penetration illuminator and an imaging system.Penetration illuminator comprises collimation lens 15 before a light source 3, light source, for the prism 1 of leaded light and by the catoptron 11 of the refraction of optical beam to working surface.From the light that light source 3 (as light emitting diode) sends, the collimation lens 15 through above carries out that collimation is laggard to be incided in deflecting prism 1.Collimated light is totally reflected to another two reflectings surface 13 through the reflecting surface 14 of prism, 12, again via the reflecting surface 13 of prism, the total reflection of 12, the synthesis of this two light beam is produced light beam L1 and projects on the catoptron 11 with image-forming objective lens zoarium, synthesis light beam L1 produces light beam L2 after catoptron 11 reflects, via producing light beam L3 after projection surface under image-forming objective lens 21 (aspheric curve) refraction and projecting on working surface 5, reflect through working surface 5 again and produce light beam L4, this folded light beam L4 produces light beam L5 through after image-forming objective lens refraction, and enter imaging in optics image sensor 4, the image read by optical image sensor carries out computing fast, thus realize the control of the cursor movement of input equipment.The position that light beam L3 projects is the field of view of the optical axis OZ centre distance+0.40mm from image-forming objective lens, and the position of this projection can be-0.3 ~+1.00mm, is preferably+0.40mm here.The technical characteristic of this penetration illuminator is: the light source in this optical system is transparent image-forming objective lens after the refraction of this penetration illuminator, and directly can to project from optical axis OZ central area image visual field closely.The machinery that this optical input apparatus relates to and circuit structure are prior art, do not repeat them here.
Imaging system in optical system of the present invention then comprises the working surface 5, image-forming objective lens 2 and the optical image sensor 4 that is positioned at above image-forming objective lens 2 that are identified.Image-forming objective lens 2 comprises projection surface 22 and lower projection surface 21, and these two workplaces can be all aspheric curve; Sensor then comprises darkroom 41 and CMOS photo-sensitive cell 42.The imaging system technology of this penetrating optical lens module is characterised in that: this imaging system has the longer depth of field, image-forming objective lens adopts binary optical elements (Binary Optics/DOE) design, can carry out imaging to the microstructure on differing heights working surface.This image-forming objective lens is also integrated in one with catoptron 11 compound of penetration illuminator.
The invention still further relates to a kind of dust control technology, because light source can be incided working surface with less irradiating angle (and the angle between imaging optical axis OZ) by this penetration optical lighting system, so only need very little space just can meet illumination path projection and reflection, as shown in Figure 6, the length of the optics fenestra W1 of input equipment only needs 2.50mm, compare the optical window hole dimension that traditional optical input apparatus significantly can reduce input equipment, the dust on working surface is made to be difficult to enter into the surface of optical device and to achieve dust-proof function, improve usability and life-span.
In addition, optical input apparatus involved in the present invention also comprises periphery and is used for assembling and fixing non-optic portion 16, and this part and illuminator and imaging system are integrated into an optical mode set of pieces body, can be integral manner shaping, also can be split type.
Optical input apparatus involved in the present invention, when it is operated in general surface (as the not high lights such as wooden, coloured rough surface or blank sheet of paper surface) time, its principle of work as shown in Figure 7.Characteristic due to the reflected light of its working surface 5 is similar to youth uncle scattering, for the incident light of any angle, all reflected light can be produced in all directions, by the microstructure on the working surface of not high light reflect or diffraction produces diffuse be transmitted to above image-forming objective lens 2 optical image sensor 4 in carry out imaging, computing is fast carried out according to the image that optical image sensor reads, thus the moving direction of the cursor of control both optical input equipment.
Optical system involved in the present invention is characterized by and can be operated on some special surface, and surperficial, the high bright paint face of the marble surface of dark colour surface, high brightness, ceramic tile, minute surface, metal polish surface, printing paper, transparent plastic surface, micronic dust transparent glass surface such as, normally work.The design of its penetration illuminator can make the light beam of light source be irradiated on working surface so that the angle of less degree (and the angle between optical axis OZ) is paraxial, the angle of current scheme is 14 degree, when the optical characteristics of working surface 5 is mirror-reflection, according to reflection law, this reflected light can project image-forming objective lens 2 in the other direction with the angle of-14 degree, and enter into optical image sensor 4 imaging through image-forming objective lens, as shown in Figure 8, the image that optical input apparatus can read according to optical image sensor carries out computing fast, thus the cursor realizing optical input apparatus controls.Here the projection angle of the optical axis OZ of image-forming objective lens can be 1 ~ 35 degree, is preferably 14 degree here.According to above-mentioned principle of work, optical system involved in the present invention can normally be operated on multiple high glossy surface, has stronger image information picked-up ability.
Optical system involved in the present invention, its penetration illuminator also can be separated separately with imaging system, and image-forming objective lens can above or below illuminator, and not necessarily needs to be integrated on same element.Fig. 9 is the embodiment of imaging system above illuminator, the upper projection surface of original image-forming objective lens and lower projection surface are replaced by projection plane 55 and lower projection plane 54, the catoptron 53 of illuminator also can be plane, above illuminator, arrange an image-forming objective lens 52 separately, the reflected light incided on working surface 5 is imaged in optical image sensor 4 through after lower projection plane 54 and upper projection plane 55 and image-forming objective lens 52.Figure 10 is the embodiment of imaging system below illuminator, the upper projection surface and the lower projection surface that were originally used for doing image-forming objective lens are replaced by projection plane 64 and lower projection plane 65, catoptron 63 in illuminator also can be curved surface, an image-forming objective lens 62 is set separately in the below of illuminator, incides reflected light on working surface through imaging in optical image sensor 4 after this image-forming objective lens 62 and lower projection plane 65, upper projection plane 64.
The quantity of fully reflecting surface of prism of light path of being used in its illuminator of optical system involved in the present invention transferring can increase and decrease as required, and prismatic light guide mode can have multiple, as long as the optical alignment of light source can be imported on catoptron 11 and reflects.Figure 11 is another scheme that light source is vertically placed on above prism, and the reflecting surface of deflecting prism decreases one, and makes former fully reflecting surface 12 and 13 into a reflecting surface 72.
Above content is in conjunction with concrete embodiment further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (9)
1. the penetrating optical lens module of an optical input apparatus, the image of working surface can be obtained, comprise penetration illuminator and imaging system, described penetration illuminator comprises light source, be positioned at the collimation lens in described light source front and the prism with reflecting surface, described imaging system comprises image-forming objective lens and optical image sensor, it is characterized in that: described penetration illuminator also comprises catoptron, the light beam that described light source sends projects described reflecting surface after described collimation lens collimation, described catoptron is projected after described reflective surface, finally working surface is projected after described catoptron refraction, the reflected light of described working surface directly enters the imaging of described optical image sensor via described image-forming objective lens, the light beam projecting described catoptron is parallel with described working surface.
2. the penetrating optical lens module of optical input apparatus as claimed in claim 1, is characterized in that: described beam projection is-0.3mm ~+1.0mm to the distance of the optical axis of the position of described working surface and described image-forming objective lens.
3. the penetrating optical lens module of optical input apparatus as claimed in claim 2, is characterized in that: the angle of the light beam and described optical axis that project described working surface is 1 degree ~ 35 degree.
4. the penetrating optical lens module of optical input apparatus as claimed in claim 1, is characterized in that: described reflecting surface is fully reflecting surface.
5. the penetrating optical lens module of optical input apparatus as claimed in claim 1, is characterized in that: described image-forming objective lens and described catoptron composite integrated.
6. the penetrating optical lens module of optical input apparatus as claimed in claim 1, it is characterized in that: described image-forming objective lens is separated setting with described catoptron, and described image-forming objective lens is positioned at above or below described catoptron.
7. the penetrating optical lens module of optical input apparatus as claimed in claim 1, is characterized in that: described image-forming objective lens is bifocus or multifocal binary optical elements.
8. the penetrating optical lens module of optical input apparatus as claimed in claim 1, is characterized in that: the chief ray of described image-forming objective lens in each visual field of object space is all parallel with the optical axis of image-forming objective lens, the rear focus of the contiguous described image-forming objective lens of its aperture diaphragm.
9. an optical input apparatus, is characterized in that: comprise the penetrating optical lens module in claim 1-8 described in any one.
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| CN201110176808.1A CN102645736B (en) | 2011-02-21 | 2011-06-16 | Optical input equipment and transmission type optical lens module of optical input equipment |
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| CN2011100413602 | 2011-02-21 | ||
| CN201110041360 | 2011-02-21 | ||
| CN201110041360.2 | 2011-02-21 | ||
| CN201110176808.1A CN102645736B (en) | 2011-02-21 | 2011-06-16 | Optical input equipment and transmission type optical lens module of optical input equipment |
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| FR3046659B1 (en) * | 2016-01-11 | 2019-11-29 | Valeo Vision | LUMINOUS DEVICE PROVIDED WITH A CURVED WAVE LENGTH CONVERTING ELEMENT, AND PROJECTOR COMPRISING SUCH A LUMINOUS DEVICE |
| CN114222054A (en) * | 2022-01-14 | 2022-03-22 | 维沃移动通信有限公司 | Camera module and electronic equipment |
Citations (5)
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|---|---|---|---|---|
| US6940652B2 (en) * | 2003-11-21 | 2005-09-06 | Pacer Technology Co., Ltd. | Optical image retrieval method |
| CN101021620A (en) * | 2006-03-17 | 2007-08-22 | 郎欢标 | Optical inputting method, equipment and beam splitting lens module of the said equipment |
| CN101030111A (en) * | 2006-03-21 | 2007-09-05 | 郎欢标 | Optical inputting method, apparatus and reflective lens mould set thereof |
| CN100437452C (en) * | 2005-06-15 | 2008-11-26 | 景传光电股份有限公司 | Miniaturized optical mouse device |
| CN202093232U (en) * | 2011-02-21 | 2011-12-28 | 郎欢标 | Optical input equipment and penetrating optical lens module group |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7126585B2 (en) * | 2001-08-17 | 2006-10-24 | Jeffery Davis | One chip USB optical mouse sensor solution |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6940652B2 (en) * | 2003-11-21 | 2005-09-06 | Pacer Technology Co., Ltd. | Optical image retrieval method |
| CN100437452C (en) * | 2005-06-15 | 2008-11-26 | 景传光电股份有限公司 | Miniaturized optical mouse device |
| CN101021620A (en) * | 2006-03-17 | 2007-08-22 | 郎欢标 | Optical inputting method, equipment and beam splitting lens module of the said equipment |
| CN101030111A (en) * | 2006-03-21 | 2007-09-05 | 郎欢标 | Optical inputting method, apparatus and reflective lens mould set thereof |
| CN202093232U (en) * | 2011-02-21 | 2011-12-28 | 郎欢标 | Optical input equipment and penetrating optical lens module group |
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Effective date of registration: 20160705 Address after: 523129 Guangdong city of Dongguan province and long industrial zone Dalang Town Park Road No. 18 Patentee after: Mikolta Optoelectronic Technology Co., Ltd. Address before: Longgang District of Shenzhen City, Guangdong province 518000 Buji Bantian Sijihuacheng garden D102 Patentee before: Lang Huanbiao |