CN111913340A - Projection module and electronic device - Google Patents
Projection module and electronic device Download PDFInfo
- Publication number
- CN111913340A CN111913340A CN202010721794.6A CN202010721794A CN111913340A CN 111913340 A CN111913340 A CN 111913340A CN 202010721794 A CN202010721794 A CN 202010721794A CN 111913340 A CN111913340 A CN 111913340A
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- Prior art keywords
- mirror
- collimating mirror
- light
- projection module
- focusing mirror
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B17/00—Systems with reflecting surfaces, with or without refracting elements
- G02B17/02—Catoptric systems, e.g. image erecting and reversing system
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/142—Adjusting of projection optics
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Projection Apparatus (AREA)
Abstract
The invention discloses a projection module, comprising: a laser transmitter; the reflecting focusing mirror is arranged in the transmitting path of the laser transmitter; the collimating mirror is provided with an incident side and an emergent side, and the incident side of the collimating mirror corresponds to the emergent direction of the reflecting focusing mirror, so that the focal point of the light rays reflected by the reflecting focusing mirror is formed on the incident side of the collimating mirror; and the optical diffractometer is arranged on the emergent side of the collimating mirror so as to diffract the light collimated by the collimating mirror into a light spot pattern. Through setting up laser emitter, reflection focusing mirror, collimating mirror and optical diffractometer, light is through reflection focusing mirror back of penetrating, and the focus forms the incident side at the collimating mirror, and the launch angle is minimum this moment, and the collimating mirror is collimated light simultaneously, diffracts into facula pattern through optical diffractometer finally, and when the launch angle is minimum, light is most concentrated, and collimating mirror and optical diffractometer can accomplish narrowest, reduce to the furthest and throw the module and account for the ratio to electronic equipment's screen.
Description
Technical Field
The present invention relates to the field of electronic devices, and in particular, to a projection module and an electronic device.
Background
At present, a smart phone is the most popular electronic product at present, and consumers not only put requirements on the functions of the smart phone, but also pay attention to the appearance of the smart phone.
In the prior art, a full screen is taken as a mainstream selling point of a current mobile phone, but no mobile phone with a real full screen appears yet, and the screen occupation ratio of the mobile phone is improved by adopting a 'perforated screen' or an 'irregular screen'. As a core device of 3D structured light face recognition: the infrared spot projection module is not under the screen because the prior art has no breakthrough.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. To this end, it is an object of the invention to propose a projection module which can diffract to form a speckle pattern and which also minimizes the effect on the screen fraction of the electronic device.
The invention further provides an electronic device.
The projection module according to the present invention comprises: a laser transmitter; the reflecting focusing mirror is arranged in a transmitting path of the laser transmitter; the collimating mirror is provided with an incident side and an emergent side, and the incident side of the collimating mirror corresponds to the emergent direction of the reflecting focusing mirror, so that the focal point of the light rays reflected by the reflecting focusing mirror is formed on the incident side of the collimating mirror; the optical diffractor is arranged on the emergent side of the collimating mirror so as to diffract the light collimated by the collimating mirror into a light spot pattern.
According to the projection module, the laser emitter, the reflecting focusing mirror, the collimating mirror and the optical diffractometer are arranged, after light rays are emitted in the emergent direction of the reflecting focusing mirror, the focal point of the light rays reflected by the reflecting focusing mirror is formed on the incident side of the collimating mirror, the emission angle is minimum at the moment, meanwhile, the collimating mirror collimates the light rays, the emission angle of the light rays is controlled to be small all the time, the light rays are finally diffracted into a light spot pattern through the optical diffractometer, when the emission angle is minimum, the light rays are most concentrated, and the collimating mirror and the optical diffractometer can be made to be narrowest, so that the influence of the projection module on the occupation ratio of an electronic equipment screen is reduced to the maximum extent.
In some examples of the present invention, the laser emitters are arranged in a bar structure and a plurality of light emitting holes are distributed in an extending direction of the bar structure. Set laser emitter into the stripe structure, laser emitter's width can accomplish sufficient narrowly, and it has a plurality of lightening holes to distribute, and the light that has certain emission angle all can be launched to a plurality of lightening holes to collect more incident light on reflection focusing mirror surface, make the focus form the incident side at the collimating mirror after reflection focusing mirror outgoing direction jets out.
In some examples of the present invention, the distance between at least two adjacent sets of the light emitting holes is different. The light emitted by the luminous hole can form speckle structure light, and the more scattered the light is, the more accurately the depth of the target can be measured and calculated according to the algorithm requirement of the speckle structure light.
In some examples of the invention, the surface of the reflecting focusing mirror facing the laser emitter is provided with a plurality of sub-reflecting units, the surface of each sub-reflecting unit is provided with a plurality of cambered surfaces, the sub-reflecting units form the focal points of light rays through reflection of the plurality of cambered surfaces, and the corresponding focal points of the plurality of sub-reflecting units are located at different positions of the same plane. The sub-reflecting units of the reflecting focusing mirror can deflect the light passing through the reflecting focusing mirror by 90 degrees, the surface of each sub-reflecting unit is provided with a plurality of arc surfaces, the circle centers of the arc surfaces are different in position, each arc surface can enable the light to point to a specific direction and the same point, namely a focus, the sub-reflecting units correspond to different focuses, and the positions of the focuses are located at different positions of the same plane.
In some examples of the present invention, the reflecting focusing mirror is disposed obliquely with respect to an incident side surface of the collimating mirror toward a surface of the collimating mirror, and an incident direction of the reflecting focusing mirror is disposed perpendicular to an exit direction. Can collect the light that laser emitter launches better like this, light can make the focus form in the incident side of collimating mirror after through the reflection, and the contained angle between reflection focusing mirror and the collimating mirror is 45 moreover to can be with the light deflection 90 through reflection focusing mirror.
In some examples of the invention, the collimating mirror and the optical diffractor are each configured as a strip-shaped structure and are arranged with their surfaces facing one another in abutment. The widths of the collimating mirror and the optical diffractometer can be sufficiently narrow, so that the influence of the projection module on the screen occupation of the electronic equipment is reduced to the maximum extent, the surfaces of the collimating mirror and the optical diffractometer facing each other are arranged in an attached mode, collimated light rays are directly converged to the optical diffractometer through the collimating mirror, external interference cannot be caused, and the space occupied on one side of the back face of the display screen can be reduced.
In some examples of the present invention, the collimating mirror and the optical diffractor have a width dimension a, wherein a satisfies the relationship: a is more than 0 and less than or equal to 2 mm. The widths of the collimating mirror and the optical diffractor are sufficiently narrow, so that the influence of the projection module on the screen ratio of the electronic equipment can be reduced.
In some examples of the invention, 0 < a < 1 mm. The widths of the collimating lens and the optical diffractometer can be made narrower, so that the influence of the projection module on the screen ratio of the electronic equipment is reduced to the maximum extent, and the contradiction between the projection module and the overall screen is solved.
In some examples of the invention, the projection module further comprises: the laser emitter, the reflection focusing mirror, the collimating mirror and the optical diffractor are all fixed on the shell. It is more convenient to install the projection module in the electronic equipment through the shell, and the interference between the projection module and other modules in the electronic equipment can be avoided.
An electronic device according to the present invention includes: a display screen; the laser emitter is located on the back face of the display screen, the optical diffractometer is located on one side of the periphery of the display screen, and the collimating mirror and the laser emitter are located on the back face of the optical diffractometer.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of an internal light transmission path of an electronic device according to an embodiment of the invention;
FIG. 2 is a schematic diagram of light rays emitted from a laser emitter to a reflective focusing mirror;
FIG. 3 is a schematic structural diagram of a sub-reflection unit;
fig. 4 is a schematic diagram of a light spot pattern diffracted by an optical diffractometer from a strip-shaped light spot.
Reference numerals:
a projection module 1;
a laser transmitter 10; a light emitting hole 11;
a reflective focusing mirror 20; a sub-reflecting unit 21; a cambered surface 22;
a collimator lens 30; an incident side 31; an exit side 32;
an optical diffractor 40; a focal point 41; a spot pattern 42; a strip-shaped light spot 43;
an electronic device 2; a display screen 3.
Detailed Description
Embodiments of the present invention will be described in detail below, the embodiments described with reference to the drawings being illustrative, and the embodiments of the present invention will be described in detail below.
In the following, referring to fig. 1-4, a projection module 1 according to an embodiment of the invention is described, the electronic device 2 comprising: the projection module 1 is arranged on one side of the back surface of the display screen 3.
As shown in fig. 1, a projection module 1 according to an embodiment of the present invention includes: the laser diffraction device comprises a laser emitter 10, a reflecting focusing mirror 20, a collimating mirror 30 and an optical diffractor 40, wherein the reflecting focusing mirror 20 is arranged in an emitting path of the laser emitter 10. The laser transmitter 10 emits a beam of light, the reflective focusing mirror 20 is disposed in the emitting path of the laser transmitter 10, and the light passes through the reflective focusing mirror 20 and is emitted from the emitting direction of the reflective focusing mirror 20. The laser transmitter 10 may be, among others, a Vcsel (vertical cavity surface emitting laser).
As shown in fig. 1, the collimator lens 30 has an incident side 31 and an exit side 32, and the incident side 31 of the collimator lens 30 corresponds to the exit direction of the reflective focusing mirror 20, so that the focal point 41 of the light reflected by the reflective focusing mirror 20 is formed on the incident side 31 of the collimator lens 30. Since the incident side 31 of the collimator lens 30 corresponds to the emitting direction of the reflective focusing lens 20, when the light beam is emitted through the emitting direction of the reflective focusing lens 20, the light beam passes through the incident side 31 of the collimator lens 30 and forms the focal point 41 on the incident side 31 of the collimator lens 30, the collimator lens 30 can maintain the collimation of the light beam at the plurality of focal points 41, the plurality of focal points 41 are formed as collimated light beams, and the collimated light beams are emitted from the emitting side 32 of the collimator lens 30.
As shown in fig. 1 and 4, an optical diffractor 40 is disposed on the exit side 32 of the collimator 30 to diffract the collimated light exiting the collimator 30 into a spot pattern 42. The optical diffractor 40 is disposed on the exit side 32 of the collimating mirror 30, the collimated light emitted from the exit side 32 of the collimating mirror 30 passes through the optical diffractor 40, the collimated light is converged on the surface of the optical diffractor 40, the collimated light can be formed into a stripe-shaped light spot 43, and the stripe-shaped light spot 43 is diffracted by the optical diffractor 40 to form a light spot pattern 42.
It should be noted that, after the light is emitted in the exit direction of the reflective focusing mirror 20, and the focal point 41 is formed on the incident side 31 of the collimating mirror 30, the emission angle is the smallest and the light is the most concentrated, so that the collimating mirror 30 and the optical diffractor 40 can be made the narrowest, and at the same time, the light is collimated by the collimating mirror 30, the emission angle of the light is always controlled to be small, and finally the light is diffracted into the spot pattern 42 by the optical diffractor 40.
Therefore, by arranging the laser emitter 10, the reflection focusing mirror 20, the collimating mirror 30 and the optical diffractor 40, after the light is emitted in the emitting direction of the reflection focusing mirror 20, and the focal point 41 of the light reflected by the reflection focusing mirror 20 is formed on the incident side 31 of the collimating mirror 30, the emitting angle is minimum at this time, the light is collimated by the collimating mirror 30, the emitting angle of the light is always controlled to be small, and finally the light is diffracted into the spot pattern 42 by the optical diffractor 40, and when the emitting angle is minimum, the light is most concentrated, the collimating mirror 30 and the optical diffractor 40 can be narrowest, so that the influence of the projection module 1 on the screen occupation ratio of the electronic device 2 is reduced to the maximum extent.
As shown in fig. 4, the light spot pattern 42 is formed after the light spot 43 is diffracted by the optical diffractometer 40, and if the light spot 43 is P, the light spot pattern 42 is (M × N) · P, wherein M, N represents the multiple of the light spot pattern 42 diffracted by the light spot 43 and is an odd multiple, and the order of the light spot pattern 42 to be generated can be set according to actual requirements.
According to an alternative embodiment of the present invention, as shown in fig. 2, the laser emitters 10 are arranged in a strip structure, and the laser emitters 10 are distributed with a plurality of light emitting holes 11 in the extending direction of the strip structure. The laser emitter 10 is arranged in a strip structure, the width of the laser emitter 10 can be sufficiently narrow, a plurality of light emitting holes 11 are distributed in the extending direction of the strip structure of the laser emitter 10, and the light rays with a certain emitting angle can be emitted from the plurality of light emitting holes 11, so that more incident light rays are collected on the surface of the reflecting focusing mirror 20 and are emitted in the emitting direction of the reflecting focusing mirror 20, and then the focus 41 is formed on the incident side 31 of the collimating mirror 30.
As shown in fig. 2, the distances between at least two adjacent groups of two light emitting holes 11 are different. That is to say, in the plurality of light emitting holes 11 distributed in the extending direction of the stripe structure, the distance between at least two adjacent groups of two light emitting holes 11 may be different from the distance between other adjacent groups of two light emitting holes 11, so that the light emitted from the light emitting holes 11 may form speckle structure light, and according to the algorithm requirement of the speckle structure light, the more scattered the light is, the more accurately the depth of the target can be measured and calculated.
Moreover, as shown in fig. 2, the width of the laser emitter 10 in the extending direction of the stripe structure can cover the width of the whole display screen 3, and since the diffraction multiple of the optical diffractor 40 in the linear direction of the upper diffraction of the electronic device 2 is a little less, the width of the laser emitter 10 in the extending direction of the stripe structure is properly adjusted, so that the total energy can be more sufficient.
Alternatively, as shown in fig. 2 and 3, the surface of the reflection focusing mirror 20 facing the laser emitter 10 has a plurality of sub-reflection units 21, the surface of each sub-reflection unit 21 has a plurality of arc surfaces 22, the sub-reflection units 21 form the focal points 41 of the light rays by reflection of the plurality of arc surfaces 22, and the positions of the focal points 41 corresponding to the plurality of sub-reflection units 21 are at different positions of the same plane. The surface of the reflection focusing mirror 20 facing the laser emitter 10 is provided with a plurality of sub-reflection units 21, the light emitting holes 11 of the laser emitter 10 and the sub-reflection units 21 of the reflection focusing mirror 20 are in one-to-one correspondence, the sub-reflection units 21 of the reflection focusing mirror 20 can deflect the light passing through the reflection focusing mirror 20 by 90 °, the surface of each sub-reflection unit 21 is provided with a plurality of arc surfaces 22, the arc surfaces 22 in the figure are represented by circles, each arc surface 22 can direct the light to a specific direction, the sub-reflection units 21 of the same reflection focusing mirror 20 have a plurality of different arc surface 22 structures, but the light can direct to the same point, namely, the focus 41, the plurality of sub-reflection units 21 correspond to different focuses 41, and the positions of the plurality of focuses 41 are in different positions of the same plane.
According to an alternative embodiment of the present invention, as shown in fig. 1, the reflective focusing mirror 20 is disposed obliquely with respect to the incident side 31 surface of the collimating mirror 30 toward the surface of the collimating mirror 30, and the incident direction of the reflective focusing mirror 20 is disposed perpendicular to the exit direction. The surface of the reflection focusing mirror 20 facing the collimating mirror 30 is obliquely arranged relative to the surface of the incident side 31 of the collimating mirror 30, so that light emitted by the laser emitter 10 can be better collected, the light can be reflected to form a focus 41 on the incident side 31 of the collimating mirror 30, the incident direction and the emergent direction of the reflection focusing mirror 20 are vertically arranged, the included angle between the reflection focusing mirror 20 and the collimating mirror 30 is 45 degrees, and the light passing through the reflection focusing mirror 20 can be deflected by 90 degrees.
Of course, as shown in fig. 1, the collimator 30 and the optical diffractor 40 are each configured as a strip-like structure, and the surfaces of the collimator 30 and the optical diffractor 40 facing each other are arranged in abutment. The collimating mirror 30 and the optical diffractometer 40 are both constructed into a strip structure, the widths of the collimating mirror 30 and the optical diffractometer 40 can be made to be sufficiently narrow, so that the influence of the projection module 1 on the screen occupation of the electronic equipment 2 is reduced to the maximum extent, the surfaces of the collimating mirror 30 and the optical diffractometer 40 facing each other are arranged in an abutting mode, collimated light rays are directly converged to the optical diffractometer 40 through the collimating mirror 30 without being interfered by the outside, and the space occupied on one side of the back face of the display screen 3 can be reduced.
Optionally, the width-direction dimensions of the collimator lens 30 and the optical diffractor 40 are a, where a satisfies the relation: a is more than 0 and less than or equal to 2 mm. The width-direction size ranges of the collimator lens 30 and the optical diffractor 40 are set as follows: a is more than 0 and less than or equal to 2mm, so that the widths of the collimating mirror 30 and the optical diffractor 40 are sufficiently narrow, and the influence of the projection module 1 on the screen ratio of the electronic equipment 2 can be reduced.
Further, 0 < a < 1 mm. The width-direction dimension ranges of the collimator lens 30 and the optical diffractor 40 are set more accurately as follows: a is more than 0 and less than or equal to 1mm, so that the widths of the collimating mirror 30 and the optical diffractor 40 can be narrower, the influence of the projection module 1 on the screen ratio of the electronic equipment 2 is reduced to the maximum extent, and the contradiction between the projection module 1 and the overall screen is solved.
In addition, the projection module 1 further includes: the shell, the laser emitter 10, the reflecting focusing mirror 20, the collimating mirror 30 and the optical diffractor 40 are all fixed on the shell. It should be noted that before the laser emitter 10, the reflective focusing mirror 20, the collimating mirror 30, and the optical diffractor 40 are all fixed in the electronic device 2, a mold housing adapted to the laser emitter 10, the reflective focusing mirror 20, the collimating mirror 30, and the optical diffractor 40 needs to be manufactured first, and then the laser emitter 10, the reflective focusing mirror 20, the collimating mirror 30, and the optical diffractor 40 are fixedly disposed at a position corresponding to the housing, so that it is more convenient to install the projection module 1 in the electronic device 2 by using the housing, and interference between the projection module 1 and other modules in the electronic device 2 can also be avoided.
As shown in fig. 1, an electronic apparatus 2 according to an embodiment of the present invention includes: the display screen 3 and the projection module 1 described above, the laser emitter 10 is located on the back of the display screen 3, the optical diffractor 40 is located on the outer peripheral side of the display screen 3, for example, on the top of the display screen 3, and the collimating mirror 30 and the laser emitter 10 are located on the back of the optical diffractor 40. The screen of the electronic device 2 arranged in this way occupies a relatively large area, and the use experience of a user can be improved. The electronic device 2 may be a mobile phone or a tablet computer.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A projection module, comprising:
a laser transmitter;
the reflecting focusing mirror is arranged in a transmitting path of the laser transmitter;
the collimating mirror is provided with an incident side and an emergent side, and the incident side of the collimating mirror corresponds to the emergent direction of the reflecting focusing mirror, so that the focal point of the light rays reflected by the reflecting focusing mirror is formed on the incident side of the collimating mirror;
the optical diffractor is arranged on the emergent side of the collimating mirror so as to diffract the light collimated by the collimating mirror into a light spot pattern.
2. The projection module of claim 1, wherein the laser emitters are arranged in a strip-shaped structure and a plurality of light emitting holes are distributed in the extending direction of the strip-shaped structure.
3. The projection module of claim 2, wherein the distance between at least two adjacent sets of two of the light emitting holes is different.
4. The projection module of claim 1, wherein the surface of the reflective focusing mirror facing the laser emitter has a plurality of sub-reflection units, the surface of each sub-reflection unit has a plurality of curved surfaces, the sub-reflection units form the focal points of the light rays by reflecting through the plurality of curved surfaces, and the positions of the corresponding focal points of the plurality of sub-reflection units are located at different positions of the same plane.
5. The projection module of claim 1, wherein the surface of the reflective focusing mirror facing the collimating mirror is disposed obliquely to the incident side surface of the collimating mirror, and the incident direction of the reflective focusing mirror is disposed perpendicular to the exit direction.
6. The projection module as claimed in claim 1, characterized in that the collimating mirror and the optical diffractor are each configured as a strip-like structure and are arranged with their surfaces facing one another in abutment.
7. The projection module of claim 6, wherein the collimating mirror and the optical diffractor have a width dimension a, wherein a satisfies the relationship: a is more than 0 and less than or equal to 2 mm.
8. The projection module of claim 7, wherein 0 < a < 1 mm.
9. The projection module of claim 1, further comprising: the laser emitter, the reflection focusing mirror, the collimating mirror and the optical diffractor are all fixed on the shell.
10. An electronic device, comprising:
a display screen;
the projection module of any of claims 1-9, the laser emitter being located on a back side of the display screen, the optical diffractor being located on a peripheral side of the display screen, the collimating mirror and the laser emitter being located on a back side of the optical diffractor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010721794.6A CN111913340A (en) | 2020-07-24 | 2020-07-24 | Projection module and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010721794.6A CN111913340A (en) | 2020-07-24 | 2020-07-24 | Projection module and electronic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111913340A true CN111913340A (en) | 2020-11-10 |
Family
ID=73281474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010721794.6A Withdrawn CN111913340A (en) | 2020-07-24 | 2020-07-24 | Projection module and electronic device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111913340A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113740865A (en) * | 2021-08-31 | 2021-12-03 | 上海悠睿光学有限公司 | Structured light projection module and electronic equipment |
-
2020
- 2020-07-24 CN CN202010721794.6A patent/CN111913340A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113740865A (en) * | 2021-08-31 | 2021-12-03 | 上海悠睿光学有限公司 | Structured light projection module and electronic equipment |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| CB02 | Change of applicant information |
Address after: 330096 No.699 Tianxiang North Avenue, Nanchang hi tech Industrial Development Zone, Nanchang City, Jiangxi Province Applicant after: Jiangxi OMS Microelectronics Co.,Ltd. Address before: 330096 east of Xueyuan 6th Road and south of Tianxiang Avenue, Nanchang hi tech Industrial Development Zone, Nanchang City, Jiangxi Province Applicant before: OFilm Microelectronics Technology Co.,Ltd. |
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| CB02 | Change of applicant information | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20201110 |
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| WW01 | Invention patent application withdrawn after publication |