KR102427440B1 - Device for varying laser emission angle and device for acquiring 3-dimensional image - Google Patents

Abstract

The present invention relates to a device capable of changing a laser emission angle and an apparatus capable of acquiring a three-dimensional image using the device.
The present invention, a laser module; a light refraction module, the laser module comprising at least one vertical cavity surface light emitting laser diode, the light refraction module comprising: an electroactive polymer material layer comprising an electroactive polymer material; an optical pattern formed on the first surface of the electroactive polymer material layer; a third electrode formed on the second surface of the electroactive polymer material layer; It provides a variable laser emission angle including a fourth electrode formed on a third surface of the electroactive polymer material layer facing the second surface.

Description

Laser emission angle variable element and 3-D image acquisition device { DEVICE FOR VARYING LASER EMISSION ANGLE AND DEVICE FOR ACQUIRING 3-DIMENSIONAL IMAGE }

The present invention relates to a device capable of changing a laser emission angle and an apparatus capable of acquiring a three-dimensional image using the device.

More specifically, it relates to a device capable of controlling an emission angle of a laser including a vertical cavity surface light-emitting laser and an electroactive polymer, and a device capable of acquiring a three-dimensional image according to a distance from a subject, including the device. .

Due to the development of information and communication technology, the demand for a technology for acquiring and processing a 3D image is increasing day by day.

A three-dimensional camera is a device for generating a three-dimensional still image by collecting a plurality of two-dimensional still images. The 3D camera may include a laser device, an image sensor, and an image processing module to generate a 3D still image.

The laser device may irradiate a laser to the subject. The image sensor may generate a two-dimensional still image by receiving a laser reflected from the subject. The image processing module may generate a 3D still image by combining a plurality of 2D still images.

The 3D camera may use a structure light (SL) method and a time of flight (ToF) method when measuring the depth of a 3D still image.

The SL method can measure the depth of a 3D still image by irradiating a dot pattern onto a subject and then recognizing a change in the dot pattern. The ToF method can measure the depth of a three-dimensional still image by irradiating infrared rays to a subject and then measuring the time it takes to reflect and return.

A Vertical-Cavity Surface-Emitting Laser (VCSEL) is a semiconductor laser diode that emits a laser in a direction perpendicular to the upper surface. The vertical cavity surface light emitting laser can be used when generating a dot pattern by the SL method or generating infrared rays by the ToF method.

However, since the vertical cavity surface light emission laser emits the laser in a direction perpendicular to the upper surface, there is a problem in that a dot pattern or infrared rays cannot be irradiated other than in a direction perpendicular to the upper surface.

In order to solve this problem, a diffuser may be provided, but the dot pattern or infrared rays emitted by the vertical cavity surface light emitting laser and passing through the diffuser may be diffused only within a certain angular range.

Therefore, there is a need for a device capable of adjusting a dot pattern emitting a vertical cavity surface light-emitting laser or an angle range in which infrared rays are diffused.

It is an object of the present invention to solve the above problems, and to provide a laser emission angle variable device capable of adjusting the angle range at which light emitted from a vertical cavity surface light emission laser is diffused.

Another object of the present invention is to provide an apparatus capable of acquiring a three-dimensional image by measuring a depth according to a distance from a subject.

In order to achieve the above object, the present invention includes a laser module; a light refraction module, the laser module comprising at least one vertical cavity surface light emitting laser diode, the light refraction module comprising: an electroactive polymer material layer comprising an electroactive polymer material; an optical pattern formed on the first surface of the electroactive polymer material layer; a third electrode formed on the second surface of the electroactive polymer material layer; It provides a variable laser emission angle including a fourth electrode formed on a third surface of the electroactive polymer material layer facing the second surface.

And, the optical pattern, in the form of an intaglio lenticular lens, provides a laser emission angle variable element.

And, the electroactive polymer material is a copolymer of vinylidene fluoride, trifluoroethylene, and chlorofluoroethylene (P(VDF-TrFE-CFE), [poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene)]) Phosphorus, a laser emission angle variable element is provided.

The vertical cavity surface light emitting laser diode includes: a first electrode layer; a substrate layer doped with an n-type semiconductor material; a first Bragg mirror layer formed by alternately stacking thin films having different refractive indices and doped with an n-type semiconductor material; an activation layer formed by alternately stacking quantum well layers and barrier layers; A second Bragg mirror layer formed by alternately stacking thin films having different refractive indices, doped with a p-type semiconductor material, and a second electrode layer having an opening formed in a central region, the first electrode layer and the substrate A variable laser emission angle is provided, in which layers, the first Bragg mirror layer, the activation layer, the second Bragg mirror layer, and the second electrode layer are stacked in this order.

and an electrical control module, wherein the electrical control module receives a light generation control signal to supply power to the vertical cavity surface light emission laser diode, and receives a light emission angle control signal to power the light refraction module a control unit for supplying It provides a laser emission angle variable element, including a power unit for converting alternating current electricity to direct current electricity, or converting the magnitude of direct current electricity and supplying it to the control unit.

And, the laser module, the optical refraction module, and further comprising a case module for accommodating the electrical control module, wherein the laser module and the optical pattern are positioned facing each other, it provides a laser emission angle variable element.

Another embodiment of the present invention, the laser emission angle variable element and; a splitter module; a three-dimensional image sensor module; a two-dimensional image sensor module; an image processing module, wherein the laser emission angle variable element emits a first light, the light-receiving lens module receives the second light reflected by a subject irradiated with the first light, and the splitter module includes: , separates the second light into third light and fourth light, and the 3D image sensor module converts the third light into a 3D depth signal that is an electrical signal including depth information of a 3D still image, The 2D image sensor module converts the fourth light into a 2D color signal that is an electrical signal including color information of a 2D still image, and the image processing module includes the 2D color signal and the 3D depth signal. To provide a three-dimensional image acquisition device for generating three-dimensional image data in a three-dimensional still image file format by combining pixel regions corresponding to each other.

The third light is infrared light having a wavelength band of 780 nm to 1 mm, and the fourth light is visible light having a wavelength band of 380 nm to 780 mm.

In addition, the 3D image sensor module provides a 3D image acquisition device, which is a Structured Light (SL) sensor or a Time of Flight (ToF) sensor.

In addition, the 2D image sensor module is a CCD image sensor (Charged Couple Device image sensor) or CMOS active pixel sensor (Complementary Metal-Oxide Semiconductor active pixel sensor), a 3D image acquisition device is provided.

and a control module, wherein the control module transmits a light generation control signal to the variable laser emission angle element to control the laser emission angle variable element to generate the first light, and a light emission angle A control signal is transmitted to the variable laser emission angle element to control an emission angle when the laser emission angle variable element emits the first light, and a three-dimensional image data generation signal is transmitted to the image processing module. Thus, there is provided a 3D image acquisition device that controls the image processing module to generate the 3D image data.

and an output module, wherein the output module includes a display unit that is a display device, wherein the display unit displays the 3D image data.

The laser emission angle variable device of the present invention includes an intaglio optical pattern facing the vertical cavity surface light emission laser and an electroactive polymer material layer made of an electroactive polymer material, and the difference in voltage applied to the electroactive polymer material By using the change in the refractive index caused by , it is possible to control the range of the angle at which the light emitted from the vertical cavity surface light emitting laser is diffused.

In addition, since the 3D image acquisition device including the laser emission angle variable element can easily designate a photographing area by adjusting an angle range at which light is emitted, a user can conveniently acquire 3D image data.

1A and 1B are respectively a perspective view and a longitudinal cross-sectional view schematically illustrating a laser emission angle variable device according to an embodiment of the present invention.
2A is a longitudinal cross-sectional view schematically illustrating a laser module according to an embodiment of the present invention.
2B and 2C are diagrams schematically showing a plan view of a laser module in each embodiment of the present invention.
3A and 3B are respectively a perspective view and a longitudinal cross-sectional view schematically illustrating a light refraction module according to an embodiment of the present invention.
4 is a block diagram schematically illustrating a 3D image acquisition apparatus according to an embodiment of the present invention, respectively.

The present invention may be practiced with various modifications without departing from the spirit, and may have one or more embodiments. In the present invention, the examples described in “specific contents for carrying out the invention” and “drawings” are examples for describing the present invention in detail, and do not limit or limit the scope of the present invention.

Therefore, those with ordinary knowledge in the technical field to which the present invention pertains can easily infer from the "specific details for carrying out the invention" and "drawings" of the present invention are interpreted as belonging to the scope of the present invention. can do.

In addition, the size and shape of each component shown in the drawings may be exaggerated for the description of the embodiment, and do not limit the size and shape of the actually implemented invention.

Unless a term used in the specification of the present invention is specifically defined, it may have the same meaning as commonly understood by a person of ordinary skill in the art to which the present invention belongs.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

1A and 1B are respectively a perspective view and a longitudinal cross-sectional view schematically illustrating a laser emission angle variable device according to an embodiment of the present invention.

The laser emission angle variable device 100 according to an embodiment of the present invention may generate and emit light to the outside. In addition, the laser emission angle variable device 100 according to an embodiment of the present invention may adjust the emission angle of light.

The variable laser emission angle element 100 according to an embodiment of the present invention may include a laser module 110 , a light refraction module 120 , an electrical control module 130 , and a case module 140 . have.

2A is a longitudinal cross-sectional view schematically showing a laser module in an embodiment of the present invention, and FIGS. 2B and 2C are views schematically showing a plan view of the laser module in each embodiment of the present invention.

The laser module 110 may generate light. The laser module 110 may be a vertical cavity surface light emitting laser (VCSEL) diode, and may receive an electrical signal and then convert it into an optical signal.

As shown in FIG. 2A , the laser module 110 includes a first electrode layer 111, a substrate layer 112, a first Bragg mirror layer 113, an activation layer 114, which are sequentially stacked; It may include a second Bragg mirror layer 115 and a second electrode layer 116 .

The first electrode layer 111 and the second electrode layer 116 may be electrodes made of an opaque conductive material. For example, each of the first electrode layer 111 and the second electrode layer 116 may include aluminum (Al), titanium (Ti), iron (Fe), nickel (Ni), copper (Cu), silver (Ag), and gold. (Au) or an alloy thereof.

Alternatively, the first electrode layer 111 and the second electrode layer 116 may be electrodes made of a transparent conductive material. For example, each of the first electrode layer 111 and the second electrode layer 116 may be formed of any one of indium tin oxide (ITO) and indium zinc oxide (IZO).

The first electrode layer 111 and the second electrode layer 116 may be formed of one layer. Alternatively, the first electrode layer 111 and the second electrode layer 116 may be formed of two or more layers, and each layer may be formed of an opaque conductive material or a transparent conductive material.

The second electrode layer 116 may have an aperture (OP) formed in a central region. The light generated by the activation layer 114 may pass through the opening and be emitted to the outside of the laser module 110 .

The substrate layer 112 may be formed by doping an n-type semiconductor material. For example, the substrate layer 112 may be formed by adding an n-type dopant to gallium arsenide (GaAs).

The first Bragg mirror layer 113 and the second Bragg mirror layer 115 may be formed by alternately stacking a thin film having a relatively high refractive index and a thin film having a relatively low refractive index, respectively. And the thickness of the thin film may be 1/4 of the wavelength of light emitted from the laser module 110 .

The first Bragg mirror layer 113 may be formed by doping an n-type semiconductor material. For example, the first Bragg mirror layer 113 may be formed by adding an n-type dopant to aluminum arsenide (AlAs) or gallium arsenide (GaAs).

The second Bragg mirror layer 115 may be formed by doping a p-type semiconductor material. For example, the second Bragg mirror layer 115 may be formed by adding a p-type dopant to aluminum gallium arsenide (AlGaAs) or gallium arsenide (GaAs).

The activation layer 114 may have a single quantum well structure including one quantum well layer.

Alternatively, the activation layer 114 may have a multi-quantum well structure formed by alternately stacking the quantum well layers 114a and the barrier layers 114b. In this case, the quantum well layer 114a may be made of, for example, indium gallium arsenide (InGaAs), and the barrier layer 114b may be made of, for example, gallium arsenide (GaAs).

When a voltage is applied to the first electrode layer 111 and the second electrode layer 116, respectively, electrons and holes recombine in the activation layer 114 and then return to the ground state to generate the first light L1. can The first light L1 generated by the activation layer 114 is repeatedly reflected and oscillated between the first Bragg mirror layer 113 and the second Bragg mirror layer 115, and the size of the optical signal is not amplified. can In addition, the first light L1 may be emitted in a first direction D1 perpendicular to the second electrode layer 116 .

The laser module 110 may include one or more vertical cavity surface light emitting laser diodes (VCSELs).

A form of disposing one or more vertical cavity surface light emitting laser diodes (VCSELs) may depend on a form of a dot pattern generated by the laser module 110 to be emitted to the outside.

For example, as shown in FIG. 2B , one or more vertical cavity surface light-emitting laser diodes (VCSELs) may be arranged in a matrix form so that the laser module 110 may emit a dot pattern in a matrix form. Alternatively, as shown in FIG. 2C , one or more vertical cavity surface light emitting laser diodes (VCSELs) may be disposed in a radiation form, so that the laser module 110 emits a dot pattern in the radiation form.

3A and 3B are respectively a perspective view and a longitudinal cross-sectional view schematically illustrating a light refraction module according to an embodiment of the present invention.

The light refraction module 120 may adjust an emission angle of light. The light refraction module 120 may be made of an electro-active polymer (EAP), and when the first light L1 generated by the laser module 110 is emitted from the variable laser emission angle element 100 . can change the angle of

The light refraction module 120 may include an optical pattern 121 , a third electrode 122 , a fourth electrode 123 , and an electroactive polymer material layer 124 .

The optical pattern 121 may be in the form of a lenticular lens, and the optical refraction module 120 is on the first surface F1 of the electroactive polymer material layer 124 facing the laser module 110, It can be formed by arranging semi-cylindrical lenses in parallel. Accordingly, when the optical pattern 121 is viewed in the first direction D1 (ie, when viewed from the laser module 110 to the light refraction module 120 ), the optical pattern 121 may be viewed in a concave shape. That is, it may be in the form of an intaglio lenticular lens.

The optical pattern 121 may diffuse the first light L1 emitted from the laser module 110 in the light refraction module 120 .

The third electrode 122 and the fourth electrode 123 may be positioned to face each other. For example, the third electrode 122 may be located on the second surface F2 of the electroactive polymer material layer 124 , and the fourth electrode 123 may be located on the third surface of the electroactive polymer material layer 124 . It can be located in (F3).

The third electrode 122 and the fourth electrode 123 may be electrodes made of an opaque conductive material. For example, the third electrode 122 and the fourth electrode 123 are aluminum (Al), titanium (Ti), iron (Fe), nickel (Ni), copper (Cu), silver (Ag), and gold, respectively. (Au) or an alloy thereof.

Alternatively, the third electrode 122 and the fourth electrode 123 may be electrodes made of a transparent conductive material. For example, each of the third electrode 122 and the fourth electrode 123 may be formed of any one of indium tin oxide (ITO) and indium zinc oxide (IZO).

An electroactive polymer material (EAP) may be filled in the electroactive polymer material layer 124 . Electroactive polymer material (EAP) is a copolymer of vinylidene fluoride, trifluoroethylene, and chlorofluoroethylene (P(VDF-TrFE-CFE), [poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene)]) can

As an electric field is applied to the electroactive polymer material layer 124 , its refractive index may change by a numerical value according to Equation 1 below.

는 제 1 광(L1)의 파장을 나타내고, k는 커 상수(Kerr constant)를 나타내며, E는 전기 활성 고분자 물질(124)에 인가되는 전기장의 크기를 나타낸다.In Equation 1,

denotes the wavelength of the first light L1 , k denotes a Kerr constant, and E denotes the magnitude of the electric field applied to the electroactive polymer material 124 .

When a voltage is applied to each of the third electrode 122 and the fourth electrode 123 , an electric field is formed therebetween, and the refractive index of the electroactive polymer material 124 may be changed.

The angle before and after the first light L1 is incident on the light refraction module 120 may be expressed as Equation 2 below according to Snell's Law.

은 광 굴절 모듈(120) 외부의 굴절률을 나타내고,

은 제 1 광(L1)에 광 굴절 모듈(120)로 입사할 때 법선에 대한 각도를 나타내는 입사각이다.

는 광 굴절 모듈(120)의 굴절률을 나타내고,

는 광 굴절 모듈(120)로 입사된 후 법선에 대한 각도를 나타내는 굴절각이다.in Equation 2

represents the refractive index of the outside of the light refraction module 120,

is an incident angle indicating an angle with respect to the normal when the first light L1 is incident on the light refraction module 120 .

represents the refractive index of the light refraction module 120,

is a refraction angle indicating an angle with respect to the normal after being incident on the light refraction module 120 .

)이 증가할 때는 제 1 광(L1)의 굴절각(

)이 감소하게 된다. 반대로 광 굴절 모듈(120)의 굴절률(

)이 감소할 때는 제 1 광(L1)의 굴절각(

)이 증가하게 된다.The refractive index of the light refraction module 120 (

) increases, the refraction angle of the first light L1 (

) will decrease. Conversely, the refractive index of the light refraction module 120 (

) decreases, the refraction angle of the first light L1 (

) will increase.

)이 감소한 경우, 제 1 광(L1)이 광 굴절 모듈(120)에서 방출될 때 출사 영역이 감소할 수 있다. 반대로 제 1 광(L1)의 굴절각(

)이 증가한 경우, 제 1 광(L1)이 광 굴절 모듈(120)에서 방출될 때 출사 영역이 증가할 수 있다.The refraction angle of the first light L1 (

) is reduced, the emission area may decrease when the first light L1 is emitted from the light refraction module 120 . Conversely, the refraction angle of the first light L1 (

) increases, the emission area may increase when the first light L1 is emitted from the light refraction module 120 .

)을 변화시킴으로써, 제 1 광(L1)의 출사 영역을 제어할 수 있다.Accordingly, by adjusting the size of the electric field applied to the electroactive polymer material 124 inside the light refraction module 120, the refractive index

), it is possible to control the emission area of the first light L1.

The electrical control module 130 may adjust the magnitude of the voltage applied to the laser module 110 and the light refraction module 120 .

The electrical control module 130 may include a power unit 131 and a control unit 132 .

The power unit 131 may receive alternating current (AC) from the outside of the laser emission angle variable element 100 and then convert it into direct current (DC). Alternatively, the power unit 131 may receive direct current electricity (DC) from the outside of the laser emission angle variable element 100 and then convert the size thereof.

In addition, the power unit 131 may supply the converted direct current electricity (DC) to the control unit 132 .

The control unit 132 may adjust the voltage according to the control signals ECS1 and ECS2 received from the outside of the laser emission angle variable element 100 and supply it to the laser module 110 and the light refraction module 120, respectively. .

For example, after receiving the light generation control signal ECS1 , the control unit 132 applies different voltages to the first electrode layer 111 and the second electrode layer 116 of the laser module 110 , respectively. can Accordingly, the laser module 110 may generate the first light L1 and emit it to the outside.

In addition, the control unit 132 may receive the light emission angle control signal ECS2, and then apply different voltages to the third electrode 122 and the fourth electrode 123 of the light refraction module 120, respectively. have.

)을 증가시키고, 제 1 광(L1)의 출사 영역을 감소시킬 수 있다.For example, by forming a relatively large voltage difference between the third electrode 122 and the fourth electrode 123, the refractive index (

) may be increased, and the emission area of the first light L1 may be decreased.

)을 감소시키고, 제 1 광(L1)의 출사 영역을 증가시킬 수 있다.Alternatively, by forming a voltage difference between the third electrode 122 and the fourth electrode 123 to be relatively small, the refractive index (

) may be reduced, and the emission area of the first light L1 may be increased.

The case module 140 may accommodate the laser module 110 , the light refraction module 120 , and the electrical control module 130 .

The case module 140 may fix the laser module 110 , the light refraction module 120 , and the electrical control module 130 so that the first light L1 is accurately transmitted to the subject.

4 is a block diagram and a longitudinal cross-sectional view schematically illustrating a 3D image acquisition apparatus according to an embodiment of the present invention, respectively.

The 3D image acquisition apparatus 1 according to an embodiment of the present invention may irradiate light to the subject SBJT, and may generate 3D image data by receiving light reflected from the subject SBJT. .

The three-dimensional image acquisition apparatus 1 according to an embodiment of the present invention includes a laser emission angle variable element 100 , a light-receiving lens module 200 , a splitter module 300 , and a three-dimensional image sensor module 400 . ), a two-dimensional image sensor module 500 , an image processing module 600 , a control module 700 , an input module 800 , and an output module 900 .

The variable laser emission angle element 100 may be the same as the laser emission angle variable element 100 according to an embodiment of the present invention described above.

The laser emission angle variable element 100 may generate the first light L1 and irradiate the subject SBJT as a target. In this case, the laser emission angle variable element 100 may adjust the emission angle of the first light L1 to enlarge or reduce the photographing area SR. In addition, the subject SBJT located in the photographing area SR may be irradiated with the first light L1 and then may reflect the second light L2 in the direction in which the 3D image acquisition apparatus 1 is located.

The light receiving lens module 200 may receive light reflected from the subject SBJT and transmit it to the inside of the 3D image acquisition apparatus 1 .

The light receiving lens module 200 may be a convex lens, and may collect the second light L2 reflected from the subject SBJT located in the photographing area SR into the interior of the dimensional image acquisition device 1 . have.

The splitter module 300 may separate light reflected from the subject SBJT.

The splitter module 300 may split the second light L2 reflected from the subject SBJT into a third light L3 and a fourth light L4 .

The third light L3 may be infrared having a wavelength band of 780 nm to 1 mm. The splitter module 300 may transmit the third light L3 to the 3D image sensor module 400 to be converted into an electrical signal.

The fourth light L4 may be visible light having a wavelength band of 380 nm to 780 mm. The splitter module 300 may transmit the fourth light L4 to the 2D image sensor module 500 to be converted into an electrical signal.

The 3D image sensor module 400 may convert an optical signal reflected from the subject SBJT into an electrical signal including depth information of a 3D still image.

The 3D image sensor module 400 may be a structured light (SL) sensor or a time of flight (ToF) sensor.

In the case of the SL sensor, the laser emission angle variable element 100 irradiates the first light L1 having a dot pattern to the subject SBJT, and then the three-dimensional image sensor module 400 reflects from the subject SBJT. By targeting the third light L3 separated by the splitter module 300 , the information in which the dot pattern is deformed may be converted into a three-dimensional depth signal DS, which is an electrical signal.

In the case of the ToF sensor, the laser module 100 irradiates the first light L1 having a dot pattern to the subject SBJT, and then the three-dimensional image sensor module 400 is reflected from the subject SBJT to the splitter module With respect to the third light L3 separated in 300 , time information reached for each dot may be converted into a three-dimensional depth signal DS that is an electrical signal.

The 3D image sensor module 400 may transmit the converted 3D depth signal DS to the image processing module 600 .

The 2D image sensor module 500 may convert an optical signal reflected from the subject SBJT into an electrical signal including color information of a 2D still image.

The 2D image sensor module 500 may be a CCD image sensor (Charged Couple Device image sensor) or a CMOS active pixel sensor (Complementary Metal-Oxide Semiconductor active pixel sensor).

After the laser module 100 irradiates the first light L1 having a dot pattern to the subject SBJT, the two-dimensional image sensor module 500 is reflected from the subject SBJT and separated from the splitter module 300 The fourth light L4 may be converted into a two-dimensional color signal CS, which is an electrical signal including color information for each position.

The 2D image sensor module 500 may transmit the converted 2D color signal CS to the image processing module 600 .

The image processing module 600 may generate 3D image data TID by combining the 2D color signal CS and the 3D depth signal DS.

The image processing module 600 may be a microprocessor or a digital signal processor.

The image processing module 600 may convert the 2D color signal CS and the 3D depth signal DS, which are analog signals, into digital signals. Also, the image processing module 600 may perform a pre-processing operation of removing noise from the 2D color signal CS and the 3D depth signal DS converted into digital signals.

The image processing module 600 receives the 3D image data generation signal ECS3, and then combines the pixel regions corresponding to each other in the 2D color signal CS and the 3D depth signal DS to obtain a 3D still image. 3D image data (TID) in the form of an image file may be generated.

The control module 700 may control a photographing start operation, a photographing area designation, and a 3D image data (TID) generation operation.

The control module 700 may be a microprocessor or a digital signal processor.

The control module 700 receives the shooting start signal IS1 from the input module 800 , and then sends a light generation control signal to the control unit 132 of the electric control module 130 of the laser emission angle variable element 100 . (ECS1) can be transmitted. After receiving the light generation control signal ECS1 , the control unit 132 may apply different voltages to the first electrode layer 111 and the second electrode layer 116 of the laser module 110 , respectively. Accordingly, the laser module 110 may generate the first light L1.

The control module 700 receives the imaging area designation signal IS2 from the input module 800 , and then sends the light emission angle to the control unit 132 of the electric control module 130 of the variable laser emission angle element 100 . A control signal ECS2 may be transmitted. After receiving the light emission angle control signal ECS2 , the control unit 132 may apply different voltages to the third electrode 122 and the fourth electrode 123 of the light refraction module 120 , respectively. . Accordingly, when the laser emission angle variable element 100 emits the first light L1, the emission angle may be adjusted to designate the photographing area SR.

The control module 700 may receive the capturing end signal IS3 from the input module 800 , and then transmit the 3D image data generation signal ECS3 to the image processing module 600 . The image processing module 600 receives the 3D image data generation signal ECS3 and then combines the 2D color signal CS and the 3D depth signal DS to generate 3D image data TID. can

The control module 700 receives the image display signal IS4 from the input module 800 , and then the image processing module 600 performs a two-dimensional color signal CS, a three-dimensional depth signal DS, and a three-dimensional image. Any one of the data TID may be transmitted to the output module 900 .

The control module 700 may receive the image output signal IS5 from the input module 800 , and then cause the image processing module 600 to transmit the 3D image data TID to the output module 900 . .

The input module 800 may receive a photographing start input, a photographing area designation input, and a photographing end input from the user of the 3D image obtaining apparatus 1 .

The input module 800 may include first to fourth switches 810 to 840 and a switch controller 850 .

The first switch 810 may receive a photographing start input and a photographing end input from the user of the 3D image obtaining apparatus 1 . The first switch 810 may be a push button switch.

The second switch 820 may receive a photographing area designation input from the user of the 3D image acquisition apparatus 1 . The second switch 820 may be a slide switch or a joystick.

The third switch 830 may receive an image display input from the user of the 3D image acquisition apparatus 1 . The third switch 830 may be a toggle switch, and may change positions to respectively display the 2D color signal CS, the 3D depth signal DS, and the 3D image data TID.

The fourth switch 840 may receive an image output input from the user of the 3D image acquisition apparatus 1 . The fourth switch 840 may be a push button switch.

When the first to fourth switches 810 to 840 receive an input, the switch controller 850 may generate a signal and transmit it to the control module 700 .

The switch controller 850 may include a photographing state storage unit for storing whether or not photographing has been taken, and may store the photographing end state SH in the photographing state storage unit immediately after operating the 3D image acquisition device 1 .

When the user of the 3D image acquisition device 1 inputs the first switch 810 once, the switch controller 850 may generate a shooting start signal IS1 and transmit it to the control module 700, The photographing end state SH stored in the photographing state storage unit may be changed to the photographing start state SB and stored.

When the user of the 3D image acquisition device 1 inputs the first switch 810 once again, the switch controller 850 may generate a shooting end signal IS3 and transmit it to the control module 700, , the shooting start state SB stored in the shooting state storage unit may be changed to the shooting end state SH and stored.

That is, whenever the user of the 3D image acquisition apparatus 1 inputs the first switch 810 , the image capturing start state SB and the image capturing end state SH may be alternately changed, and accordingly, the image capturing start signal (IS1) or the photographing end signal IS3 may be transmitted to the control module 700 to control the photographing operation.

When the user of the 3D image acquisition apparatus 1 moves the second switch 820 , the switch controller 850 sends a capturing area designation signal including distance information between the position where the second switch 820 is moved and the origin. (IS2) may be generated and transmitted to the control module 700 . And the control module 700, the voltage difference between the third electrode 122 and the fourth electrode 123 of the light refraction module 120 of the laser emission angle variable element 100, the second switch 820 is The light emission angle control signal ECS2 may be generated to be proportional to the distance information between the moved position and the origin.

When the user of the 3D image acquisition device 1 inputs the third switch 830 , the switch controller 850 generates an image display signal IS4 including information on a location where the third switch 820 is located. , may be transmitted to the control module 700 . And the control module 700, according to the information on the location of the third switch 820, the image processing module 600 is a two-dimensional color signal (CS), a three-dimensional depth signal (DS), three-dimensional image data ( TID) may be transmitted to the output module 900 for display.

When the user of the 3D image acquisition apparatus 1 inputs the fourth switch 840 , the switch controller 850 may generate an image output signal IS5 and transmit it to the control module 700 . In addition, the control module 700 may cause the image processing module 600 to transmit the 3D image data TID to the output module 900 and output the 3D image data to the outside of the 3D image acquisition apparatus 1 .

The output module 900 may display the captured image and transmit it to the outside of the 3D image obtaining apparatus 1 .

The output module 900 may include a display unit 910 and a communication unit 920 .

The display unit 910 may receive and display any one of the 2D color signal CS, the 3D depth signal DS, and the 3D image data TID from the image processing module 600 . And the display unit 910 may be a display device.

The communication unit 920 may receive the 3D image data TID from the image processing module 600 and transmit it to the outside of the 3D image obtaining apparatus 1 .

Communication unit 920, serial port (serial port), parallel port (parallel port), SCSI (Small Computer System Interface), USB (Universal Serial Bus), IEEE 1394, ATA (Advanced Technology Attachment), SATA (Serial Advanced) Technology Attachment), M.2, PCI (Peripheral Component Interconnect Bus) may include a wired interface such as PCI-Express.

Alternatively, the communication unit 920 may include a modem implementing a short-range wireless communication protocol such as Wi-Fi, Bluetooth, Near Field Communication (NFC), and ZigBee.

Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and as long as it does not deviate from the gist of the present invention and does not impair the effect, various within the scope of the detailed description and accompanying drawings of the present invention It can be changed and implemented. It is also natural that such an embodiment falls within the scope of the present invention.

1: 3D image acquisition device 100: laser emission angle variable element
110: laser module 111: first electrode layer
112: substrate layer 113: first Bragg mirror layer
114: activation layer 115: second Bragg mirror layer
116: second electrode layer 120: light refraction module
121: optical pattern 122: third electrode
123: fourth electrode 124: electroactive polymer material layer
130: electrical control module 131: power unit
132: control unit 140: case module
200: light receiving lens module 300: splitter module
400: 3D image sensor module 500: 2D image sensor module
600: image processing module 700: control module
800: input module 810 to 840: first to fourth switches
850: switch controller 900: output module
910: display unit 920: communication unit

Claims (12)

a laser module; a light refraction module;
The laser module is
one or more vertical cavity surface light emitting laser diodes;
The light refraction module,
an electroactive polymer material layer comprising an electroactive polymer material;
an optical pattern formed on the first surface of the electroactive polymer material layer;
a third electrode formed on the second surface of the electroactive polymer material layer;
and a fourth electrode formed on a third surface of the electroactive polymer material layer facing the second surface,
Laser emission angle variable element.
The method of claim 1,
The optical pattern is
In the form of an intaglio lenticular lens,
Laser emission angle variable element.
The method of claim 1,
The electroactive polymer material is
A copolymer of vinylidene fluoride, trifluoroethylene, and chlorofluoroethylene (P(VDF-TrFE-CFE), [poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene)]), which is,
Laser emission angle variable element.
The method of claim 1,
The vertical cavity surface light emitting laser diode comprises:
a first electrode layer;
a substrate layer doped with an n-type semiconductor material;
a first Bragg mirror layer formed by alternately stacking thin films having different refractive indices and doped with an n-type semiconductor material;
an activation layer formed by alternately stacking quantum well layers and barrier layers;
a second Bragg mirror layer formed by alternately stacking thin films having different refractive indices and doped with a p-type semiconductor material;
a second electrode layer having an opening formed in the central region;
The first electrode layer, the substrate layer, the first Bragg mirror layer, the activation layer, the second Bragg mirror layer, and the second electrode layer are sequentially stacked,
Laser emission angle variable element.
The method of claim 1,
further comprising an electrical control module;
The electrical control module,
a control unit for receiving a light generation control signal to supply power to the vertical cavity surface light emitting laser diode, and for receiving a light emission angle control signal to supply power to the light refraction module;
Containing a power supply unit that converts alternating current electricity into direct current electricity, or converts the magnitude of direct current electricity to supply the control unit,
Laser emission angle variable element.
6. The method of claim 5,
Further comprising a case module accommodating the laser module, the optical refraction module, and the electrical control module,
The laser module and the optical pattern are located facing each other,
Laser emission angle variable element.
The laser emission angle variable element of any one of claims 1 to 6; a splitter module; a three-dimensional image sensor module; a two-dimensional image sensor module; an image processing module;
The laser emission angle variable element emits a first light,
The light receiving lens module receives the second light reflected by the subject being irradiated with the first light,
The splitter module splits the second light into a third light and a fourth light,
The 3D image sensor module converts the third light into a 3D depth signal that is an electrical signal including depth information of a 3D still image,
The two-dimensional image sensor module converts the fourth light into a two-dimensional color signal that is an electrical signal including color information of a two-dimensional still image,
The image processing module generates 3D image data in a 3D still image file format by combining pixel regions corresponding to each other in the 2D color signal and the 3D depth signal.
3D image acquisition device.
8. The method of claim 7,
The third light is infrared having a wavelength band of 780 nm to 1 mm,
The fourth light is visible light having a wavelength band of 380 nm to 780 mm,
3D image acquisition device.
8. The method of claim 7,
The three-dimensional image sensor module,
SL (Structured Light) sensor or ToF (Time of Flight) sensor,
3D image acquisition device.
8. The method of claim 7,
The two-dimensional image sensor module,
CCD image sensor (Charged Couple Device image sensor) or CMOS active pixel sensor (Complementary Metal-Oxide Semiconductor active pixel sensor),
3D image acquisition device.
8. The method of claim 7,
Further comprising a control module,
The control module is
by transmitting a light generation control signal to the variable laser emission angle element to control the laser emission angle variable element to generate the first light;
Controlling the light emission angle control signal to the variable laser emission angle control element to adjust the emission angle when the laser emission angle variable element emits the first light,
transmitting a 3D image data generation signal to the image processing module to control the image processing module to generate the 3D image data,
3D image acquisition device.
12. The method of claim 11,
further comprising an output module;
The output module includes a display unit that is a display device,
The display unit displays the 3D image data,
3D image acquisition device.

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