CN113623614A - Polarized lens for light supplement, light supplement control method and related device - Google Patents
Polarized lens for light supplement, light supplement control method and related device Download PDFInfo
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- CN113623614A CN113623614A CN202110681023.3A CN202110681023A CN113623614A CN 113623614 A CN113623614 A CN 113623614A CN 202110681023 A CN202110681023 A CN 202110681023A CN 113623614 A CN113623614 A CN 113623614A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
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- F21V5/04—Refractors for light sources of lens shape
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Abstract
The invention discloses a polarized lens for light supplement, a light supplement control method and a related device, wherein the polarized lens for light supplement comprises a light incident surface, a reflecting surface and a light emergent surface; the reflecting surface is an annular curved surface and comprises a first area reflecting surface, a second area reflecting surface, a third area reflecting surface and a fourth area reflecting surface which are distributed in the circumferential direction; the first area reflecting surface and the second area reflecting surface, and the third area reflecting surface and the fourth area reflecting surface are respectively distributed in a plane symmetry manner, light passing through the reflecting surfaces is distributed with equal intensity in the first direction of the light-emitting surface, the first area reflecting surface and the fourth area reflecting surface, and the second area reflecting surface and the third area reflecting surface are respectively distributed in a non-plane symmetry manner, and light passing through the reflecting surfaces is non-uniformly distributed in the second direction of the light-emitting surface. Through the mode, the light source device can realize the equiintensity distribution of emergent light in the first direction and the quasi-Gaussian space intensity distribution in the second direction.
Description
Technical Field
The invention relates to the technical field of optical illumination, in particular to a polarized lens for light supplement, a light supplement control method and a related device.
Background
Traditional panorama light filling generally adopts the mode of panorama concatenation illumination, and panorama concatenation illumination generally adopts the scheme that single camera lens joined in marriage single light filling or adopts the luminous form of rotatory LED light source. For the scheme of single lens matched with single light supplement, the light supplement light source or the lens is usually designed in a rotational symmetry mode, and the angle and the light spot are also in a symmetry mode, so that the requirement of uniform panoramic illumination cannot be met, and the phenomenon of uneven transition with over-bright center and over-dark edge can occur; for the light emitting form of the rotary LED light source, because the rotary LED light source is luminous by a lambertian body or a lambertian-like body, the requirement of uniform illumination is difficult to achieve, and the existing panoramic light supplement effect is poor.
Disclosure of Invention
The invention mainly solves the technical problem of providing a polarized lens for light supplement, a light supplement control method and a related device, which can realize equal intensity distribution of emergent rays in a first direction and quasi-Gaussian space intensity distribution in a second direction.
In order to solve the technical problems, the invention adopts a technical scheme that: a polarized lens for light compensation is provided. The polarized lens comprises a light incident surface, a reflecting surface and a light emergent surface; the light incident surface and the light emergent surface are positioned at two opposite ends of the polarizing lens, and the reflecting surface is positioned on the side surface of the polarizing lens; the reflecting surface is an annular curved surface and comprises a first area reflecting surface, a second area reflecting surface, a third area reflecting surface and a fourth area reflecting surface which are distributed in the circumferential direction; the first area reflecting surface and the second area reflecting surface are in surface-symmetric distribution, so that light passing through the first area reflecting surface and the second area reflecting surface is in equal intensity distribution in the first direction of the light-emitting surface, the third area reflecting surface and the fourth area reflecting surface are in surface-symmetric distribution, so that light passing through the third area reflecting surface and the fourth area reflecting surface is in equal intensity distribution in the first direction of the light-emitting surface, the first area reflecting surface and the fourth area reflecting surface are in non-planar symmetric distribution, so that light passing through the first area reflecting surface and the fourth area reflecting surface is in non-uniform distribution in the second direction of the light-emitting surface, and more than half of light is deflected to one side of the first area reflecting surface; the second area reflecting surface and the third area reflecting surface are distributed in a non-planar symmetrical mode, so that light passing through the second area reflecting surface and the third area reflecting surface is distributed in a non-uniform mode in the second direction of the light emitting surface, and more than half of light is deflected to one side of the second area reflecting surface; the first direction and the second direction form an included angle.
The first area defining curve defines a first area reflecting surface and a second area reflecting surface, the second area defining curve defines a third area reflecting surface and a fourth area reflecting surface, the oblique included angle of the tangent vector of the first area defining curve gradually decreases at a first change rate, the oblique included angle of the tangent vector of the second area defining curve gradually decreases at a second change rate, and the first change rate is smaller than the second change rate.
The oblique included angle of the tangent vector of the first area defining curve is changed from a first angle to a second angle, the first angle is larger than or equal to 45 degrees, and the second angle is larger than or equal to 5 degrees and smaller than or equal to 15 degrees.
The oblique included angle of the tangent vector of the second area defining curve is changed from a third angle to a fourth angle, the third angle is greater than or equal to 40 degrees and less than or equal to 50 degrees, and the fourth angle is greater than or equal to 15 degrees.
The light incident surface comprises a mold core light incident surface and a circumferential light incident surface, light passing through the mold core light incident surface is directly emitted from the light emitting surface, light passing through the circumferential light incident surface is emitted from the light emitting surface after passing through a reflecting surface, the mold core light incident surface comprises a first region mold core light incident surface in a first direction, and edges of two sides of the first region mold core light incident surface are on the same horizontal plane, so that the light passing through the first region mold core light incident surface is distributed with equal intensity in the first direction of the light emitting surface.
The first region mold core light-in surface comprises a negative curvature vector surface, and the first region mold core light-in surface is a free-form surface.
The mold core light inlet surface comprises a second area mold core light inlet surface and a third area mold core light inlet surface in the second direction, edges of two sides of the second area mold core light inlet surface are not on the same horizontal plane, edges of two sides of the third area mold core light inlet surface are not on the same horizontal plane, the inclination directions of the second mold core light inlet surface and the third mold core light inlet surface are the same, and the second area mold core light inlet surface is lower than the third area mold core light inlet surface, so that light passing through the second mold core light inlet surface and the third mold core light inlet surface is non-uniformly distributed in the second direction of the light outlet surface, and more than half of the light is deflected to one side of the first area reflecting surface or the second area reflecting surface.
The mold core light inlet surface comprises a fourth region mold core light inlet surface in the second direction, and edges of two sides of the fourth region mold core light inlet surface are not on the same horizontal plane, so that light passing through the fourth region mold core light inlet surface is non-uniformly distributed in the second direction of the light outlet surface, and more than half of the light is deflected to one side of the first region reflecting surface or the second region reflecting surface.
The second region mold core light-in surface, the third region mold core light-in surface and the fourth region mold core light-in surface comprise forward curvature vector surfaces, and the second region mold core light-in surface, the third region mold core light-in surface and the fourth region mold core light-in surface are free-form surfaces.
The light-emitting surface comprises a first light-emitting surface and a second light-emitting surface, the first light-emitting surface is a wedge-shaped surface, and the second light-emitting surface is a horizontal surface.
Wherein, the light-emitting angle in the first direction is greater than or equal to 130 degrees; and/or the light-emitting angle in the second direction is greater than or equal to 80 degrees and less than or equal to 110 degrees.
Wherein the deflection angle of the light in the second space is greater than or equal to 5 degrees and less than or equal to 25 degrees.
Wherein, the first direction and the second direction form an included angle of 90 degrees.
In order to solve the technical problem, the invention adopts another technical scheme that: a light supplement device is provided. This light filling device includes: the light supplementing assembly comprises a light supplementing polarized lens, and the light supplementing polarized lens comprises the light supplementing polarized lens.
The light supplementing device comprises at least three light supplementing assemblies, and the at least three light supplementing assemblies are evenly distributed in the circumferential direction.
The structures of the polarized lenses for light supplement in the at least three light supplement assemblies are the same or different.
The device comprises a shell, wherein the shell comprises at least three cavities, and the cavities are used for accommodating the light supplementing assembly.
Wherein, in the radial direction, the installation depression angle of the polarized lens for light filling is more than or equal to 15 degrees and less than or equal to 30 degrees.
In order to solve the technical problem, the invention adopts another technical scheme that: a light supplement control method is provided. The light supplement control method comprises the following steps: acquiring a sample picture, wherein the sample picture is obtained by shooting under the light supplementing condition of the light supplementing device; extracting brightness information and gain information of the sample picture, and calculating a brightness balance value of the sample picture; and responding to the fact that the brightness balance value does not meet the preset condition, and adjusting the brightness of the light supplementing assembly.
In order to solve the technical problem, the invention adopts another technical scheme that: the light supplement device comprises a processor, and the processor is used for executing the light supplement control method.
In order to solve the technical problem, the invention adopts another technical scheme that: there is provided a computer-readable storage medium for storing instructions/program data that can be executed to implement the fill light control method as described above.
The invention has the beneficial effects that: different from the prior art, the illumination device has the advantages that the symmetrical reflecting surfaces are arranged in the first direction, so that the illumination light is in large-angle spatial equal-intensity distribution in the first direction; and an asymmetric reflecting surface is arranged in the second direction, so that the quasi-Gaussian spatial intensity distribution of the illumination light in the second direction in a small angle is achieved, and the illumination light has polarization characteristics in the second direction.
Drawings
Fig. 1 is a first angular exploded view of a first embodiment of a light supplement device according to the present disclosure;
fig. 2 is an exploded view of a light supplement device according to a second embodiment of the present disclosure;
FIG. 3 is a schematic structural diagram of a polarized lens of the present application;
FIG. 4 is a cross-sectional view of a polarized lens of the present application;
FIG. 5 is a schematic diagram of a light source and illumination surface energy mapping grid according to the present application;
FIG. 6 is a top view of a first embodiment of a polarized lens of the present application;
FIG. 7 is a schematic cross-sectional view of a first embodiment of a polarized lens of the present application;
FIG. 8 is a second schematic cross-sectional view of the first embodiment of the polarized lens of the present application;
FIG. 9 is a schematic cross-sectional view of a second embodiment of a polarized lens of the present application;
FIG. 10 is a second schematic cross-sectional view of a second embodiment of a polarized lens of the present application;
FIG. 11 is a schematic cross-sectional view of a third embodiment of a polarized lens of the present application;
FIG. 12 is a schematic cross-sectional view of a fourth embodiment of a polarized lens of the present application;
fig. 13 is a first cross-sectional view of a fifth embodiment of the polarizing lens of the present application;
fig. 14 is a second cross-sectional view of a fifth embodiment of the polarizing lens of the present application;
fig. 15 is a top view and a side view of a sixth embodiment of the polarizing lens of the present application;
FIG. 16 is a graph and distribution of vertical plane illuminance for a single polarized lens of the present application;
FIG. 17 is a vertical plane luminance graph of a plurality of polarized lens assemblies of the present application;
fig. 18 is a schematic flowchart of a panoramic light supplement method according to an embodiment of the present application;
FIG. 19 is a luminance-equalized image of a sample picture under the context of the present application;
fig. 20 is a schematic structural diagram of a light supplement device in an embodiment of the present application;
fig. 21 is a schematic structural diagram of a computer-readable storage medium in an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples.
Referring to fig. 1 and 2, fig. 1 is an exploded view at a first angle of a first embodiment of a light supplement device, and fig. 2 is an exploded view at a second angle of the first embodiment of the light supplement device. This light filling device includes casing 1 and light filling subassembly 2, and casing 1 is used for bearing light filling subassembly 2, and light filling subassembly 2 can give out light for the environment light filling. This light filling device includes a plurality of light filling subassemblies 2, and a plurality of light filling subassemblies 2 use the camera as center at circumference evenly distributed, can realize 360 degrees clitellum even light fillings.
The shell 1 comprises a cavity 3, and the cavity 3 is used for accommodating the light supplementing assembly 2. Light filling subassembly 2 includes light source (not shown in the figure), polarizing lens 4 and sealing member 5, and the light source is used for luminous illumination, and polarizing lens 4 is used for regulating and control the light path of the light that the light source sent, controls the light-emitting angle and the scope of light to shine predetermined within range, and sealing member 5 is used for fixing, protection light source and polarizing lens 4. Light filling subassembly 2 is installed in cavity 3 of casing 1, and the light source can be the circuit board structure (be the lamp plate) that has luminescent device, installs lamp plate, polarized lens 4 and sealing member 5 in proper order in cavity 3.
In an embodiment, the light supplement device includes three light supplement components 2, the three light supplement components 2 are uniformly distributed in the circumferential direction around the camera, and an included angle between adjacent light supplement components 2 is 120 degrees. Three light filling subassembly 2 can be respectively independent setting around the camera, also can set up on same casing 1.
Specifically, the housing 1 may be a housing 1 having a central mounting hole and three protruding structures as shown in fig. 1 and fig. 2, the central mounting hole is used for mounting a camera, the three protruding structures are uniformly arranged in the circumferential direction, and each protruding structure is provided with a cavity 3 for accommodating the light supplement assembly 2. The shell 1 can also be in an annular structure, and the cavities 3 are uniformly distributed on the annular edge. The housing 1 may be an integrally formed structure as shown in fig. 1, or may be formed by splicing a plurality of modules. This application does not restrict shape, material etc. of casing 1, as long as can satisfy can realize that circumference arranges light filling subassembly 2 around the camera can.
In the embodiment, the light supplementing device is applied to camera light supplementing illumination, at least three light supplementing assemblies 2 with equal included angle intervals are adopted, the light supplementing assemblies 2 and a camera lens are configured in the same direction or in a whole-circle tight annular configuration, and 360-degree panoramic light supplementing is flexibly realized. In other embodiments, there may be more light supplement assemblies 2, and more light supplement assemblies 2 are uniformly arranged.
Referring to fig. 2, fig. 3 and fig. 4, fig. 3 is a schematic structural diagram of a polarized lens of the present application, and fig. 4 is a cross-sectional diagram of the polarized lens of the present application. The cross section is a cross section obtained by cutting the polarized lens 4 in the direction of A-A'. The polarized lens 4 includes a light incident surface 10, a light reflecting surface 20, and a light emitting surface 30. The light incident surface 10 and the light emitting surface 30 are located at two opposite ends of the polarized lens 4, and the reflecting surface 20 is located at a side surface of the polarized lens 4 and connects the light incident surface 10 and the light emitting surface 30. When the light source is installed, the light incident surface 10 is close to the light source, the light emitting surface 30 is close to the sealing member 5, the light rays of the light source 4 are incident from the light incident surface 10, and part of the light rays are reflected by the reflecting surface 20 and then emitted from the light emitting surface 30; part of the light is directly emitted from the light-emitting surface 30. Therefore, the structure of the polarized lens 4 affects the light irradiation range.
Referring to fig. 5, fig. 5 is a schematic diagram of a light source and illumination surface energy mapping grid according to the present application. An illumination surface grid can be established according to the use scene requirements, then a light source and illumination surface energy mapping grid is established, and the structure of the polarized lens 4 can be adjusted according to the mapping relation so as to obtain the required illumination range.
In one embodiment, the present application provides a polarized lens 4, which can make the light passing through the polarized lens 4 have a spatial equal intensity distribution with a large angle in the horizontal direction and a quasi-gaussian spatial intensity distribution with a small angle in the vertical direction and have polarization characteristics by adjusting the structure of the polarized lens 4. As shown in fig. 1, the light distribution in the horizontal direction (first direction) is uniform, so that the light in the circumferential direction is more uniform, and the vertical direction (second direction) is a gaussian-like spatial intensity distribution having a small angle and having polarization characteristics, so that the light utilization rate can be improved and the glare outside the region can be reduced. When the polarized lens 4 is applied to a light supplementing device, the characteristics of higher utilization efficiency of ground light shape and smaller characteristic of glare outside an area can be achieved, and the illumination distribution of the ground annulus is realized.
In the present application, the structures of the light incident surface 10, the light reflection surface 20 and the light emitting surface 30 of the polarized lens 4 are respectively adjusted, so that the light passing through the polarized lens 4 has spatial equal-intensity distribution with a large angle in the horizontal direction, and has quasi-gaussian spatial intensity distribution with a small angle in the vertical direction, and has polarization characteristics.
In the present embodiment, the irradiation angle and the range of the reflected light can be changed by changing the curvature of the reflecting surface 20.
Referring to fig. 1 and 6, fig. 6 is a top view of a first embodiment of a polarized lens of the present application. In this embodiment, the reflecting surface 20 is an annular curved surface, and for convenience of description, the reflecting surface 20 is divided into a first regional reflecting surface 21, a second regional reflecting surface 22, a third regional reflecting surface 23, and a fourth regional reflecting surface 24 which are adjacent in sequence in the circumferential direction. In the present application, the first area reflection surface 21 and the second area reflection surface 22 are arranged to be distributed in plane symmetry, and the third area reflection surface 23 and the fourth area reflection surface 24 are arranged to be distributed in plane symmetry. The first area defining curve 41 and the second area defining curve 42 divide the reflection surface 20 into two integral surfaces, the first area reflection surface 21 and the fourth area reflection surface 24 can be regarded as one integral surface, the second area reflection surface 22 and the third area reflection surface 23 can be regarded as one integral surface, and the two integral surfaces are also distributed in plane symmetry, that is, when the reflection surface 20 is seen in a certain angle direction, two opposite ends of the reflection surface 20 are in plane symmetry.
Referring to fig. 6 and 7, fig. 7 is a first cross-sectional view of a polarized lens according to a first embodiment of the present application. The first section is a sectional view taken along the direction A-A'. The cross section is bilaterally symmetrical, the curvature change is the same, and after the light is reflected by the reflecting surface 20, the light can be uniformly and symmetrically emitted, so that equal-intensity distribution in the first direction is realized. With this arrangement, the light passing through the first area reflection surface 21 and the second area reflection surface 22 can be emitted from the light output surface 30 and then have an equal intensity distribution in the first direction; the light passing through the third area reflection surface 23 and the fourth area reflection surface 24 is emitted from the light emitting surface 30 and has an equal intensity distribution in the first direction.
Meanwhile, the first area reflecting surface 21 and the fourth area reflecting surface 24 are arranged to be non-plane symmetrically distributed, and the second area reflecting surface 22 and the third area reflecting surface 23 are arranged to be non-plane symmetrically distributed. The first area reflective surface 21 and the second area reflective surface 22 can be regarded as an integral surface, the third area reflective surface 23 and the fourth area reflective surface 24 can be regarded as an integral surface, and the two integral surfaces are not plane-symmetrical, that is, when the reflective surface 20 is viewed in an angle direction, two opposite ends of the reflective surface 20 are not plane-symmetrical.
Referring to fig. 6 and 8, fig. 8 is a second cross-sectional view of the polarized lens of the present application according to the first embodiment. The second section is a sectional view taken along the direction B-B'. The two sides of the cross section are asymmetric, the curvature changes are different, when the light arrives, the light is emitted in a non-uniform and symmetrical mode after being reflected by the reflecting surface 20, and the Gaussian-like spatial distribution in the second direction is achieved. With this arrangement, the light passing through the first area reflective surface 21 and the fourth area reflective surface 24 can be non-uniformly distributed in the second direction after exiting from the light exit surface 30, and the light passing through the second area reflective surface 22 and the third area reflective surface 23 can be non-uniformly distributed in the second direction after exiting from the light exit surface 30.
The first direction and the second direction form an included angle, and in one embodiment, the included angle between the first direction and the second direction is 90 degrees. For convenience of understanding, in the following embodiments, the first direction is a horizontal direction and the second direction is a vertical direction.
Referring to fig. 6 and 8, in the direction from the light incident surface 10 to the light emitting surface 30, the oblique included angle of the tangent vector of the first region defining curve 41 gradually decreases from the first angle to the second angle at the first change rate, the oblique included angle of the tangent vector of the second region defining curve 42 gradually decreases from the third angle to the fourth angle at the second change rate, and the first change rate is smaller than the second change rate. The curvature changes of all the radial curves on the third area reflecting surface 23 and the fourth area reflecting surface 24 are the same, the curvature changes of all the radial curves on the first area reflecting surface 21 and the second area reflecting surface 22 are different, and the change rate is smaller than the change rate of the third area reflecting surface 23 and the fourth area reflecting surface 24, so that the outgoing angle range of the light passing through the third area reflecting surface 23 and the fourth area reflecting surface 24 in the second direction is smaller, the light is deflected to one side of the third area reflecting surface 23 and the fourth area reflecting surface 24, and the deflection angle is 10 degrees.
In the present embodiment, by providing the reflecting surfaces 20 symmetrical in the horizontal direction, the emergent light passing through the reflecting surfaces 20 has a spatial equal intensity distribution with a large angle in the horizontal direction; the asymmetric reflecting surface 20 in the vertical direction is arranged, the curvature change of the lower reflecting surface 20 is slower than that of the upper reflecting surface 20, so that emergent rays passing through the lower reflecting surface 20 are more concentrated and are inclined downwards in the vertical direction, and the quasi-Gaussian space intensity distribution of small angles in the vertical direction is realized.
In the embodiment of the present application, the illumination angle and the range of the reflected light can be changed by changing the height and the front-back curvature of the light incident surface 10. In one embodiment, different curvature variations in the first and second directions of the light incident surface 10 can be used to achieve different outgoing light distributions in the two directions.
Referring to fig. 4, the light incident surface 10 includes a mold core light incident surface 11 and a circumferential light incident surface 12, a portion of the light incident surface 10 opposite to the light exit surface 30 is the mold core light incident surface 11, a side surface of the light incident surface 10 is the circumferential light incident surface 12, and the circumferential light incident surface 12 is connected to the mold core light incident surface 11 and the reflection surface 20. The mold core light incident surface 11 is a vector surface with a certain curvature, part of incident light passes through the mold core light incident surface 11, and the light is deflected and then emitted from the light emitting surface 30; the annular light incident surface 12 is a common lens surface, a part of incident light reaches the reflection surface 20 through the annular light incident surface 12, and the light is emitted from the light emitting surface 30 after being reflected.
Referring to fig. 4 and 9, fig. 9 is a schematic first cross-sectional view of a second embodiment of the polarized lens of the present application, the first cross-sectional view being a cross-sectional view taken along a direction a-a'. The cross section is bilaterally symmetrical, the curvatures are the same, when light is refracted through the light incident surface 10, the light can be uniformly and symmetrically emitted, and equal-intensity distribution in the first direction is realized. The mold core light-in surface 11 includes a first region mold core light-in surface 111 in the first direction, the first region mold core light-in surface 111 is a free-form surface, and the left and right symmetric edges of the first region mold core light-in surface 111 are on the same horizontal plane. The light passing through the first region mold core light incident surface 111 is distributed with equal intensity in the first direction of the light emergent surface 30. The first region mold core light-in surface 111 is a negative curvature vector surface, and incident light rays are refracted to the outside after passing through the first region mold core light-in surface 111, so that light ray expansion is realized. In this embodiment, the light incident surface 10 having the same height is symmetrically arranged in the horizontal direction, so that the emergent light passing through the light incident surface 10 has the equal intensity distribution in the horizontal direction, and the light emergent angle is increased by using the negative curvature vector surface.
Referring to fig. 4 and 10, in an embodiment of a second direction, fig. 10 is a schematic cross-sectional view of a second embodiment of the polarized lens of the present application, where the second cross-sectional view is a cross-sectional view obtained by cutting the light incident surface 10 along a direction B-B'. The mold core light incident surface 11 is divided into a second region mold core light incident surface 112 and a third region mold core light incident surface 113 in the second direction, and the second region mold core light incident surface 112 and the third region mold core light incident surface 113 are free-form surfaces. The second region core incident surface 112 and the third region core incident surface 113 have different curvatures and are not on the same horizontal plane, and the third region core incident surface 113 is higher than the second region core incident surface 112. After passing through the second region core light incident surface 112 and the third region core light incident surface 113, the incident light directly exits from the light exiting surface 30, and the exiting light is non-uniformly distributed in the second direction, so that more than half of the light is deflected toward the first region reflection surface 21 or the second region reflection surface 22. In an embodiment, the second region core light incident surface 112 and the third region core light incident surface 113 are both positive curvature vector surfaces, so as to implement light beam converging. Meanwhile, the second region core incident surface 112 is lower than the third region core incident surface 113, and both are inclined to the direction of the second region core incident surface 112. So that the emergent light is deflected toward the mold core light incident surface 112 side to realize polarization. In this embodiment, through setting up the inclined and unequally high income plain noodles 10 of vertical direction for the emergent ray through income plain noodles 10 is in the same kind of gaussian space intensity distribution such as vertical direction, and simultaneously, income plain noodles 10 inclines, realizes the emergent ray deflection, and uses forward curvature vector plane, reduces light outgoing angle scope.
In another embodiment of the second direction, please refer to fig. 4 and 11, fig. 11 is a schematic diagram of a first cross section of a third embodiment of the polarized lens of the present application, and the first cross section is a cross section obtained by cutting the light incident surface 10 along the direction B-B'. The core incident surface 11 is a fourth region core incident surface 114 in the second direction, the fourth region core incident surface 114 is a free-form surface, and two side edges of the fourth region core incident surface 114 are not on the same horizontal plane. After passing through the fourth region core light incident surface 114, the incident light directly exits at the light exiting surface 30, and the exiting light is non-uniformly distributed in the second direction, so that more than half of the light is deflected toward the first region reflection surface 21 or the second region reflection surface 22. In one embodiment, the fourth region core light incident surface 114 is a positive curvature vector surface, and the incident light rays are refracted inward after passing through the fourth region core light incident surface 114, so as to converge the light rays. Meanwhile, the fourth region core light incident surface 114 deflects toward the first region reflection surface 21 or the second region reflection surface 22, so that the emergent light also deflects toward the first region reflection surface 21 or the second region reflection surface 22, and polarization is realized. In this embodiment, through setting up the income plain noodles 10 that inclines on the vertical direction for the outgoing ray through income plain noodles 10 is class gaussian space intensity distribution such as vertical direction, and simultaneously, income plain noodles 10 inclines, realizes the outgoing ray deflection, and uses forward curvature vector plane, reduces light outgoing angle scope.
In another embodiment of the second direction, referring to fig. 4, the mold core incident surface 11 is divided into a fifth region mold core incident surface and a sixth region mold core incident surface in the fifth direction, and the fifth region mold core incident surface and the sixth region mold core incident surface are free-form surfaces. The fifth region mold core light-in surface and the sixth region mold core light-in surface have different curvatures, and edges of two sides are not on the same horizontal plane and have the same inclination direction. After passing through the fifth region core light incident surface and the sixth region core light incident surface, the incident light directly exits at the light exiting surface 30, the exiting light is non-uniformly distributed in the second direction, and more than half of the light is deflected toward the first region reflection surface 21 or the second region reflection surface 22. In an embodiment, the fifth region core light-in surface and the sixth region core light-in surface are both positive curvature vector surfaces, so as to realize light beam convergence. Meanwhile, the fifth region mold core light incident surface is lower than the sixth region mold core light incident surface and is inclined towards the direction of the fifth region mold core light incident surface. So that the emergent light is deflected to one side of the light incident surface of the mold core to realize polarization. In this embodiment, through setting up the inclined and unequally high income plain noodles 10 of vertical direction for the emergent ray through income plain noodles 10 is in the same kind of gaussian space intensity distribution such as vertical direction, and simultaneously, income plain noodles 10 inclines, realizes the emergent ray deflection, and uses forward curvature vector plane, reduces light outgoing angle scope.
Referring to fig. 4 and 6, in the embodiment of the present application, the illumination angle and the range of the reflected light may also be changed by changing the shape of the light emitting surface 30.
The light emitting surface 30 is divided into a first light emitting surface 31 and a second light emitting surface 32 in the second direction. In one embodiment, the first light emitting surface 31 and the second light emitting surface 32 are both horizontal surfaces. In another embodiment, with reference to fig. 12, fig. 12 is a schematic cross-sectional view of a fourth embodiment of a polarized lens of the present application, wherein the first cross-sectional view is a cross-sectional view taken along the direction B-B'. The second light-emitting surface 32 is a horizontal surface, and the first light-emitting surface 31 is a wedge-shaped surface. In the first direction, the first light emitting surface 31 and the second light emitting surface 32 are symmetrically distributed, so that the light is uniformly distributed after passing through the light emitting surface 30 in the first direction. The light in the second direction is deflected to the wedge-shaped surface side after passing through the first light-emitting surface 31, so that polarization is realized. In this embodiment, the wedge-shaped surfaces are disposed on the first light emitting surface 31 symmetrically in the horizontal direction, so that the emergent light passing through the light emitting surface 30 has an equal intensity distribution in the horizontal direction, and the emergent light passing through the first light emitting surface 31 is deflected in the vertical direction.
In the embodiment of the present application, one or more of the above-mentioned changing the curvature of the reflection surface 20, changing the height and front and back curvatures of the light incident surface 10, and changing the shape of the light emitting surface 30 may be combined to realize spatial equal intensity distribution of the emitted illumination light in a horizontal direction with a large angle, and quasi-gaussian spatial intensity distribution in a vertical direction with a small angle, and have polarization characteristics.
In one embodiment, referring to fig. 4, 6 and 13, fig. 13 is a first cross-sectional view of a fifth embodiment of a polarized lens of the present application, the first cross-sectional view being a cross-sectional view taken along a direction a-a'. The characteristics of this scheme are achieved by providing the light incident surface 10 having an inclination angle and the reflection surface 20 having different changing curvatures in the vertical direction. The edges of the left side and the right side of the mold core light incident surface 11 are on the same horizontal plane, and the horizontal section is a negative curvature vector surface; the left side and the right side of the reflecting surface 20 are symmetrical in a plane, and the oblique included angle of tangent vectors of the curve defined by the two side areas on the horizontal section is changed from 40 degrees or more and 50 degrees or less to 15 degrees or more; the light emitting surface 30 is a horizontal surface. A part of the incident light emitted from the light source passes through the light incident surface 11 of the mold core, the light deflects outwards and is uniformly emitted to the illumination surface through the light emitting surface 30, and the other part of the incident light passes through the ring to the light incident surface 12, is reflected by the reflecting surface 20 and is uniformly emitted to the illumination surface through the light emitting surface 30.
Referring to fig. 4 and 14, fig. 14 is a second cross-sectional view of a fifth embodiment of the polarized lens of the present application, the second cross-sectional view being a cross-sectional view taken along the direction B-B'. The mold core light incident surface 11 is inclined downwards and is a negative curvature vector surface in the vertical direction; the upper side and the lower side of the reflecting surface 20 are asymmetric, in a vertical section, the oblique included angle of the tangent vector of the curve defined by one side region changes from more than or equal to 40 degrees and less than or equal to 50 degrees to more than or equal to 15 degrees, the initial curvature and the change rate of the curve defined by the lower side region are adjusted, and the oblique included angle of the tangent vector of the curve defined by the other side region changes from more than or equal to 45 degrees to more than or equal to 5 degrees and less than or equal to 15 degrees; the light emitting surface 30 is a horizontal surface. A part of the incident light emitted from the light source passes through the light incident surface 11 of the mold core, is deflected inward and is deflected downward as a whole, and is deflected to the illumination surface through the light emitting surface 30, and another part of the incident light passes through the annular light incident surface 12, is reflected more intensively through the lower reflecting surface 20, and is deflected to the illumination surface through the light emitting surface 30.
In this embodiment, the concave core light incident surface 11 is provided on the horizontal cross section to increase the light exit angle, and the left and right symmetric light incident surface 10, the reflection surface 20, and the light exit surface 30 are provided to realize the spatial uniform intensity distribution with a large angle in the horizontal direction. On the vertical section, a convex mold core light incident surface 11 is arranged, the light ray emergent angle is reduced, a light incident surface 10 which is inclined downwards is arranged, the initial curvature vector inclination angle of the lower side reflecting surface 20 is increased, the change of the lower side reflecting surface 20 is reduced, the low-angle Gaussian-like space intensity distribution in the vertical direction is realized, and the polarization characteristic is realized.
In another embodiment, the light incident surface 10 with high and low curvatures, the reflecting surface 20 with different changing curvatures and the light emitting surface 30 with wedge-shaped surface are arranged in the vertical direction to realize the characteristics of the present solution.
In the horizontal direction, please refer to fig. 4 and 13, the mold core light incident surface 11 and the reflective surface 20 are the same as those of the fifth embodiment of the polarized lens 4 of the present application, and are not described herein again. The light emitting surface 30 is symmetrical to the left and right. The light emitted from the light source is uniformly emitted to the illumination surface through the annular light incident surface 12, the reflection surface 20 and the light emitting surface 30.
Referring to fig. 4 and 15 in the vertical direction, fig. 15 is a first cross-sectional view of a sixth embodiment of the polarized lens of the present application, the first cross-sectional view being a sectional view taken along the direction B-B'. The mold core light incident surface 11 is a negative curvature vector surface in the vertical direction, and the curvature of the mold core light incident surface 115 on one side is lower than that of the mold core light incident surface 116 on the other side; the two sides of the reflecting surface 20 are asymmetric, and on a vertical section, the oblique included angle of the tangent vector of the curve defined by the first side area changes from 45 degrees to 15 degrees or more, the initial curvature and the change rate of the curve defined by the other side area are adjusted, and the oblique included angle of the tangent vector of the curve defined by the second side area changes from 45 degrees or more to 5 degrees or more and 15 degrees or less; the first side light-emitting surface 33 is a horizontal surface, and the second side light-emitting surface 34 is a wedge surface. A part of incident light emitted from the light source passes through the mold core light incident surface 11, the light is deflected inward and deflected in the direction of the wedge surface at different deflection angles, another part of the incident light passes through the annular light incident surface 12, and is reflected more intensively by the reflective surface 20 at the second side, the light passing through the light emitting surface 30 is deflected normally to the illumination surface, and the light passing through the light emitting surface 30 passes through the wedge surface and is deflected again to the illumination surface.
In this embodiment, the concave core light incident surface 11 is provided on the horizontal cross section to increase the light exit angle, and the left and right symmetric light incident surface 10, the reflection surface 20, and the light exit surface 30 are provided to realize the spatial uniform intensity distribution with a large angle in the horizontal direction. On the vertical cross section, set up convex mold core income plain noodles 11, reduce light emergence angle, set up high low camber and the income plain noodles 10 of downward sloping and carry out the polarisation, increase the initial curvature vector inclination of downside plane of reflection 20, reduce the change of downside plane of reflection 20 and just give, set up the wedge face on going out the plain noodles 30 simultaneously, increase the polarisation angle. The quasi-Gaussian spatial intensity distribution of small angles in the vertical direction is realized, and the polarization characteristic is achieved.
In another embodiment, the light incident surface 10 having an inclination angle, the reflection surface 20 having different curvature changes, and the light emitting surface 30 having a wedge surface are vertically arranged to realize the characteristics of the present solution. In another embodiment, the light incident surface 10 with high and low curvatures, the reflecting surface 20 with different curvatures and the light emitting surface 30 with horizontal surface are arranged in the vertical direction to realize the characteristics of the present solution. However, the present embodiment is not limited to this, and any combination of changing the curvature of the reflection surface 20, changing the height and the front-back curvature of the light incident surface 10, and changing the shape of the light emitting surface 30 may be used to realize the characteristics of the present embodiment. Referring to fig. 16, fig. 16 is a vertical plane illuminance diagram and a distribution diagram of a single polarized lens according to the present application. As shown in fig. 16, the present application summarizes that a single polarizer 4 forms isosceles triangle-like light spots and the edge glare of the illuminance map is less. In addition, the polarized lens 4 of the same kind of structure can be selected to a plurality of light filling subassemblies 2 of this application light filling device, can make up the polarized lens 4 of multiple structure at will according to the in-service use condition. Meanwhile, the light supplementing assemblies 2 can be uniformly distributed in the circumferential direction of the light supplementing device, panoramic light supplementing can be achieved to a certain extent, and light of each light supplementing assembly 2 is controlled to be distributed with equal intensity in the circumferential direction so as to enable the circumferential illumination to be more uniform. Referring to fig. 17, fig. 17 is a vertical plane illuminance diagram of a plurality of polarized lens assemblies according to the present application. As shown in fig. 17, the present application can form a uniform annular illuminance map by combining a plurality of polarizing lenses 4.
In this embodiment, by changing the structures of the light incident surface 10, the light reflection surface 20, and the light exit surface 30, an angle of light exiting in the horizontal direction is greater than or equal to 130 degrees, an angle of light exiting in the vertical direction is greater than or equal to 80 degrees and less than or equal to 110 degrees, and a polarization angle in the vertical direction is greater than or equal to 5 degrees and less than or equal to 25 degrees.
Referring to fig. 1, in the present application, the light supplement device may be applied to a camera, and when the light supplement device is used to supplement light to the camera for illumination, and the light supplement assembly 2 is installed to make circumferential polishing more uniform, the installation position of the light supplement assembly 2 may be adjusted according to the position of the camera, for example, the camera may be disposed between the gaps of the light supplement assembly 2. The installation pitching angle of the light supplementing assembly 2 can be adjusted according to the illumination coverage range required by the camera. In this embodiment, the installation depression angle of each light supplement unit 2 is controlled to be greater than or equal to 15 degrees and less than or equal to 30 degrees. Meanwhile, the light supplementing assembly 2 has a certain mounting depression angle, the structure of the panoramic light supplementing device assists in limiting the range of the main shaft light and the edge light, the lighting utilization rate is enhanced, the glare feeling outside the area is reduced, and directional lighting is realized.
This application can be applied to the camera light filling with above-mentioned light filling device, and a plurality of light filling subassemblies 2 make up, realize the even light filling illumination of clitellum. In order to make the image registration and the image fusion in the shooting process better and the brightness balance, a plurality of light supplementing assemblies 2 can be used for mutual matching adjustment. Referring to fig. 18, fig. 18 is a schematic flow chart illustrating a panoramic light supplement method according to an embodiment of the present disclosure. It should be noted that, if the result is substantially the same, the flow sequence shown in fig. 18 is not limited in this embodiment. As shown in fig. 18, the present embodiment includes:
s201: and acquiring a sample picture.
The camera shoots by using the panoramic light supplement device with the three independent light supplement assemblies 2 to obtain a sample photo.
S202: and extracting the brightness information and the gain information of the sample picture, and calculating the brightness balance value of the sample picture.
And extracting brightness information and gain information of the sample picture from the sample picture, calculating a brightness balance value according to the brightness information and the gain information, and judging whether the brightness balance value of the sample picture meets a preset condition or not.
S203: and responding to the brightness balance value not meeting the preset condition, and adjusting the brightness of the light supplementing assembly 2.
And when the brightness balance value of the sample picture does not meet the preset condition, the brightness of the light source in the light supplementing assembly 2 is adjusted to adjust the brightness balance value of the sample picture. As shown in fig. 19, fig. 19 is a luminance-equalized image of a sample picture in the scene of the present application. Fig. 19(a) shows an unbalanced fill-in scene, and fig. 19(b) shows a fill-in scene after brightness adjustment. Three light filling components 2 in the panoramic light filling device correspond to the brightness blocks A, B and C respectively, and the brightness blocks A, B and C are balanced by adjusting the brightness of the three light filling components 2.
In this embodiment, through discerning ambient brightness, under the uneven circumstances of luminance, adjust the luminance of three independent light filling subassemblies 2, realize luminance balance control, reach the balanced effect of whole luminance.
Referring to fig. 20, fig. 20 is a schematic structural diagram of a light supplement device in an embodiment of the present disclosure. In this embodiment, the fill-in light device 201 includes a processor 202.
The fill light device 201 may further include a memory (not shown) for storing instructions and data required for the processor 202 to operate.
The processor 202 is configured to execute instructions to implement the methods provided by any of the embodiments of the panoramic fill lighting method and any non-conflicting combinations described above.
Referring to fig. 21, fig. 21 is a schematic structural diagram of a computer-readable storage medium according to an embodiment of the present disclosure. The computer readable storage medium 211 of the embodiments of the present application stores instructions/program data 212, and the instructions/program data 212, when executed, implement the methods provided by any of the embodiments of the panoramic fill lighting method of the present application and any non-conflicting combinations. The instructions/program data 212 may form a program file stored in the computer-readable storage medium 211 in the form of a software product, so as to enable a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute all or part of the steps of the methods according to the embodiments of the present application. And the aforementioned storage medium 211 includes: various media capable of storing program codes, such as a usb disk, a mobile hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, or terminal devices, such as a computer, a server, a mobile phone, and a tablet.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of a unit is merely a logical division, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (21)
1. A polarized lens for light supplement is characterized in that,
the polarized lens comprises a light incident surface, a reflecting surface and a light emergent surface;
the light incident surface and the light emergent surface are positioned at two ends of the polarized lens, which are opposite to each other, and the reflecting surface is positioned on the side surface of the polarized lens;
the reflecting surface is an annular curved surface and comprises a first area reflecting surface, a second area reflecting surface, a third area reflecting surface and a fourth area reflecting surface which are distributed in the circumferential direction;
the first area reflecting surface and the second area reflecting surface are in surface-symmetric distribution, so that light passing through the first area reflecting surface and the second area reflecting surface is in equal intensity distribution in the first direction of the light emitting surface, the third area reflecting surface and the fourth area reflecting surface are in surface-symmetric distribution, so that light passing through the third area reflecting surface and the fourth area reflecting surface is in equal intensity distribution in the first direction of the light emitting surface, the first area reflecting surface and the fourth area reflecting surface are in non-surface-symmetric distribution, so that light passing through the first area reflecting surface and the fourth area reflecting surface is in non-uniform distribution in the second direction of the light emitting surface, and more than half of light is deflected to one side of the first area reflecting surface; the second area reflecting surface and the third area reflecting surface are distributed in a non-planar symmetrical mode, so that light passing through the second area reflecting surface and the third area reflecting surface is distributed in a non-uniform mode in the second direction of the light emitting surface, and more than half of light is deflected to one side of the second area reflecting surface;
the first direction and the second direction form an included angle.
2. A polarized lens for supplementary lighting according to claim 1,
the first area defining curve defines the first area reflecting surface and the second area reflecting surface, the second area defining curve defines the third area reflecting surface and the fourth area reflecting surface, the oblique included angle of the tangent vector of the first area defining curve gradually decreases at a first change rate, the oblique included angle of the tangent vector of the second area defining curve gradually decreases at a second change rate, and the first change rate is smaller than the second change rate.
3. The polarized lens for supplementary lighting according to claim 2,
the oblique included angle of the tangent vector of the first area definition curve is changed from a first angle to a second angle, the first angle is larger than or equal to 45 degrees, and the second angle is larger than or equal to 5 degrees and smaller than or equal to 15 degrees.
4. The polarized lens for supplementary lighting according to claim 2,
the tangent vector oblique included angle of the second region definition curve is changed from a third angle to a fourth angle, the third angle is greater than or equal to 40 degrees and less than or equal to 50 degrees, and the fourth angle is greater than or equal to 15 degrees.
5. A polarized lens for supplementary lighting according to any one of claims 1 to 4,
go into the plain noodles and include that mold core goes into plain noodles and hoop go into the plain noodles, process the light that the mold core goes into the plain noodles directly follows it jets out to go out the plain noodles, process the light that the hoop goes into the plain noodles follows behind the plane of reflection follow it jets out the plain noodles, the mold core goes into the plain noodles and includes first region mold core income plain noodles on the first direction, the both sides edge that first region mold core goes into the plain noodles is on same horizontal plane, so that the process the light that first region mold core goes into the plain noodles is in equal intensity distribution on the first direction of going out the plain noodles.
6. A polarized lens for supplementary lighting according to claim 5,
the first region mold core light-in surface comprises a negative curvature vector surface, and the first region mold core light-in surface is a free-form surface.
7. A polarized lens for supplementary lighting according to claim 5,
the mold core goes into the plain noodles and includes regional mold core income plain noodles of second and third in the second direction and goes into the plain noodles, the both sides edge that the regional mold core of second goes into the plain noodles is not on same horizontal plane, the both sides edge that the regional mold core of third goes into the plain noodles is not on same horizontal plane, the second mold core go into the plain noodles with the incline direction that the third mold core goes into the plain noodles is the same, the regional mold core of second goes into the plain noodles and is less than the regional mold core of third goes into the plain noodles, so that the process the second mold core goes into the plain noodles with the light that the third mold core goes into the plain noodles is in inhomogeneous distribution in the second direction of going out the plain noodles to make more than half light first regional plane of reflection or the regional plane of second one side is turned over.
8. A polarized lens for supplementary lighting according to claim 5,
the mold core light inlet surface comprises a fourth area mold core light inlet surface in the second direction, and edges of two sides of the fourth area mold core light inlet surface are not on the same horizontal plane, so that light passing through the fourth area mold core light inlet surface is non-uniformly distributed in the second direction of the light outlet surface, and more than half of the light is deflected to one side of the first area reflecting surface or the second area reflecting surface.
9. A polarized lens for supplementary lighting according to claim 7 or 8,
the second region mold core light-in surface, the third region mold core light-in surface and the fourth region mold core light-in surface comprise forward curvature vector surfaces, and the second region mold core light-in surface, the third region mold core light-in surface and the fourth region mold core light-in surface are free-form surfaces.
10. A polarized lens for supplementary lighting according to any one of claims 1 to 9,
the light emitting surface comprises a first light emitting surface and a second light emitting surface, the first light emitting surface is a wedge-shaped surface, and the second light emitting surface is a horizontal surface.
11. A polarized lens for supplementary lighting according to claim 1,
the light emitting angle in the first direction is greater than or equal to 130 degrees; and/or
The light-emitting angle in the second direction is greater than or equal to 80 degrees and less than or equal to 110 degrees.
12. A polarized lens for supplementary lighting according to claim 1,
the deflection angle of the light in the second direction is greater than or equal to 5 degrees and less than or equal to 25 degrees.
13. A polarized lens for supplementary lighting according to claim 1,
the first direction and the second direction form an included angle of 90 degrees.
14. A light supplement apparatus, the apparatus comprising:
a light supplementing assembly, the light supplementing assembly comprising a light supplementing polarized lens, the light supplementing polarized lens comprising the light supplementing polarized lens according to any one of claims 1 to 13.
15. The light supplement device of claim 14,
the light supplementing device comprises at least three light supplementing assemblies which are evenly distributed in the circumferential direction.
16. The light supplement device of claim 15,
the structures of the polarized lenses for light supplement in the at least three light supplement assemblies are the same or different.
17. The light supplement device of claim 15,
the device comprises a shell, wherein the shell comprises at least three cavities, and the cavities are used for accommodating the light supplementing assembly.
18. The light supplement device of claim 14,
in the radial direction, the installation depression angle of the polarized lens for light supplement is more than or equal to 15 degrees and less than or equal to 30 degrees.
19. A light supplement control method is characterized by comprising the following steps:
acquiring a sample picture, wherein the sample picture is obtained by shooting under the light supplement condition of the light supplement device according to any one of claims 13-17;
extracting brightness information and gain information of the sample picture, and calculating a brightness balance value of the sample picture;
and responding to the fact that the brightness balance value does not meet the preset condition, and adjusting the brightness of the light supplementing assembly.
20. A fill-in light control device, comprising a processor configured to execute instructions to implement the fill-in light control method according to claim 19.
21. A computer-readable storage medium storing instructions/program data executable to implement the fill light control method of claim 19.
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| CN202110681023.3A CN113623614B (en) | 2021-06-18 | 2021-06-18 | Polarized lens for light supplementing, light supplementing control method and related device |
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| CN202110681023.3A CN113623614B (en) | 2021-06-18 | 2021-06-18 | Polarized lens for light supplementing, light supplementing control method and related device |
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| CN113623614B (en) | 2023-06-02 |
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