CN115047692B - Light filling lamp subassembly and camera for camera - Google Patents
Light filling lamp subassembly and camera for camera Download PDFInfo
- Publication number
- CN115047692B CN115047692B CN202210654575.XA CN202210654575A CN115047692B CN 115047692 B CN115047692 B CN 115047692B CN 202210654575 A CN202210654575 A CN 202210654575A CN 115047692 B CN115047692 B CN 115047692B
- Authority
- CN
- China
- Prior art keywords
- light
- line segment
- emitted
- light source
- reflected
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B15/00—Special procedures for taking photographs; Apparatus therefor
- G03B15/02—Illuminating scene
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B15/00—Special procedures for taking photographs; Apparatus therefor
- G03B15/02—Illuminating scene
- G03B15/06—Special arrangements of screening, diffusing, or reflecting devices, e.g. in studio
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/56—Accessories
- G03B17/565—Optical accessories, e.g. converters for close-up photography, tele-convertors, wide-angle convertors
Abstract
The invention discloses a light supplementing lamp component for a camera and the camera, wherein the light supplementing lamp component for the camera comprises a light source for generating emitted light; and a light reflecting member for reflecting the emitted light, wherein the light reflecting member includes a line segment for reflecting the emitted light in a section in a third direction, the line segment being configured to include: the first line segment, the second line segment and the third line segment are sequentially connected, wherein the first line segment is adjacent to the light source; the shapes of the first, second and third line segments are defined as: the first line segment reflects the emitted light, all the first reflected light obtained after reflection is directly reflected again through the third line segment, the third reflected light obtained after reflection is collimated and emitted, and the third line segment does not receive the emitted light directly from the light source; the second line segment reflects the emitted light, and the reflected second reflected light is collimated and emitted; the light emitted by the light supplementing lamp component for the camera can be totally reflected by the reflecting piece, and the light supplementing rays emitted by collimation are obtained after reflection.
Description
Technical Field
The invention relates to the technical field of optical devices, in particular to a light supplementing lamp assembly for a camera and the camera.
Background
On the existing security equipment, optical elements adopted by secondary light distribution of the LEDs mainly comprise lenses, reflectors, refraction plates and the like. The reflecting mirror adopts the principle of reflection or total reflection, is generally in a shape of a quadric of revolution, and has stronger light collecting capability than a lens and higher light energy utilization rate due to the limited refractive index of materials.
However, the implementation of the secondary light distribution by using the reflector has many drawbacks, for example, the LED lamp beads or the lamp panels can shade light to cause the limited light control area of the reflector, and further cause that a part of light cannot be collimated and emitted by the reflector, so that the reflector has the problem of low light utilization rate during the secondary light distribution.
Disclosure of Invention
The invention discloses a light supplementing lamp component for a camera and the camera, which are used for solving the problems of smaller light control area and lower light utilization rate of a reflecting mirror in the related technology.
In order to solve the problems, the invention adopts the following technical scheme:
in a first aspect, the present application discloses a light filling lamp assembly for a camera, comprising:
a light source for generating emitted light;
a light reflecting member for reflecting the emitted light, wherein the light reflecting member includes a line segment for reflecting the emitted light in a section in a third direction, the line segment being configured to include:
the first line segment, the second line segment and the third line segment are sequentially connected, wherein the first line segment is adjacent to the light source;
the shapes of the first line segment, the second line segment, and the third line segment are defined as:
the first line segment reflects the emitted light, all the first reflected light obtained after reflection is directly reflected again through the third line segment, the third reflected light obtained after reflection is collimated and emitted, and the third line segment does not receive the emitted light directly from the light source;
the second line segment reflects the emitted light, and second reflected light obtained after reflection is collimated and emitted;
the emitted light of the light supplementing lamp component for the camera can be totally reflected by the reflecting piece, and the light supplementing rays emitted by collimation are obtained after reflection.
In a second aspect, the present application also discloses a camera, the disclosed camera comprising the light filling lamp assembly for a camera of the first aspect.
The technical scheme adopted by the invention can achieve the following beneficial effects:
the light source emits the emitted light to the first line segment, the first reflected light formed by the reflection of the first line segment emits the third reflected light formed by the reflection of the third line segment and the third reflected light formed by the reflection of the third line segment is collimated and emitted. The light source emits the emitted light to the second line segment, and the second reflected light formed by the reflection of the second line segment is all collimated and emitted, so that the emitted light emitted by the light source is all collimated and emitted, and the utilization rate of the emitted light of the light source in light supplementing can be improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a light compensating lamp assembly for a camera according to an embodiment of the present application;
FIG. 2 is a second schematic diagram of a light compensating lamp assembly for a camera according to an embodiment of the present disclosure;
FIG. 3 is a third schematic structural view of a light compensating lamp assembly for a camera according to an embodiment of the present disclosure;
FIG. 4 is a cross-sectional view taken along the direction A-A in FIG. 3;
FIG. 5 is a schematic illustration of a light filling lamp assembly for a camera according to an embodiment of the present application;
fig. 6 is a schematic diagram of a light filling lamp assembly for a camera in a coordinate system according to an embodiment of the present application.
In the figure:
100-a light reflecting piece, 110-a first reflecting surface, 111-a first line segment, 120-a second reflecting surface, 121-a second line segment, 130-a third reflecting surface, 131-a third line segment;
200-light source;
300-a lamp panel assembly;
A-A first distance; b-a second distance; c-a third distance; d-a fourth distance; e-a fifth distance; f-sixth distance; g-seventh distance; h-eighth distance;
f1-first focus, F2-second focus.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, based on the examples herein, which are within the scope of the invention as defined by the claims, will be within the scope of the invention as defined by the claims.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type and not limited to the number of objects, e.g., the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
The reflective light compensating device provided in the embodiments of the present application is described in detail below with reference to fig. 1 to 6 by way of specific embodiments and application scenarios thereof.
Referring to fig. 1 to 6, the embodiment of the application discloses a reflective light supplementing device, which includes a light reflecting member 100 and a light source 200, wherein the light source 200 is disposed adjacent to the light reflecting member 100, and the light source 200 emits light toward the light reflecting member 100 and realizes light distribution by reflection of the light reflecting member 100.
Specifically, the light reflecting member 100 has a first reflecting surface 110, a second reflecting surface 120, and a third reflecting surface 130. As shown in fig. 4, the first, second and third reflective surfaces 110, 120 and 130 include first, second and third line segments 111, 121 and 131, respectively, in a cross section in the third direction. The first reflecting surface 110 and the second reflecting surface 120 respectively face the light emitting end of the light source 200, and may be concave surfaces facing the light source 200, and the light emitted by the light source 200 is reflected by the first reflecting surface 110 and the second reflecting surface 120.
The first reflecting surface 110 is an ellipsoid, the first reflecting surface 110 has a first focal point F1 and a second focal point F2, the first focal point F1 and the second focal point F2 are also two focal points of the ellipsoid, the light source 200 is disposed at the first focal point F1 of the first reflecting surface 110, and it is known by the optical properties of the ellipsoid that the light emitted from the first focal point F1 is reflected by the first reflecting surface 110, and the formed reflected light is intersected with the second focal point F2, so that the reflected light of the first reflecting surface 110 can be equivalent to the light emitted from the light source 200 at the second focal point F2.
In this embodiment, the third reflecting surface 130 is a paraboloid (i.e., the third reflecting surface 130 is a part of the first paraboloid), the third reflecting surface 130 has a third focal point, the third focal point is a focal point of the first paraboloid, the third focal point coincides with the second focal point F2, and the first light emitted by the light source 200 is collimated and emitted along the first direction after being reflected by the first reflecting surface 110 and the third reflecting surface 130 in sequence. By utilizing the optical properties of the paraboloids, the light emitted by the light source 200 at the third focal point is reflected by the third reflecting surface 130, and the reflected light is emitted in parallel, so that the first light emitted by the light source 200 is converged at the second focal point F2 after being reflected by the first reflecting surface 110 for the first time, and then the reflected light is incident on the third reflecting surface 130, which is equivalent to the light emitted by the light source 200 at the second focal point F2, so that the first light is finally collimated and emitted along the first direction at the third reflecting surface 130, and the first direction is the opening direction of the third reflecting surface 130. In other words, on the complete paraboloid (i.e., the first paraboloid) where the third reflecting surface 130 is located, the first direction is the direction from the vertex of the first paraboloid to the opening of the first paraboloid.
In this embodiment, the second reflecting surface 120 is a paraboloid (i.e., the second reflecting surface 120 is a part of the second paraboloid), the second reflecting surface 120 has a fourth focal point, the fourth focal point coincides with the first focal point F1, and it can be known by using the optical property of the paraboloid that the second light emitted by the light source 200 is collimated and emitted along the second direction after being reflected by the second reflecting surface 120, and the second direction is the opening direction of the second reflecting surface 120. Similarly, on the complete paraboloid (i.e., the second paraboloid) where the second reflecting surface 120 is located, the second direction is the direction from the vertex of the second paraboloid to the opening of the second paraboloid.
The first direction and the second direction are the same. The first direction and the second direction are the same, the light emitted by the light source 200 can ensure the intensity and uniformity of the light distribution, and the configuration of the light source can be simplified, so that the lighting device with good design is obtained.
The reflective light supplementing device disclosed in this embodiment changes the light path by using the optical properties of the elliptical surface and the parabolic surface, after the first light ray emitted by the light source 200 is reflected by the first reflecting surface 110, the reflected light ray is incident to the third reflecting surface 130 and collimated and emitted along the first direction by the third reflecting surface 130, so that the reflected light ray of the first reflecting surface 110 can be prevented from being blocked by the light source 200 or the lamp panel assembly 300 for mounting the light source, the reflected light ray of the first reflecting surface 110 can be prevented from being emitted in a divergent manner, the second light ray emitted by the light source 200 is directly collimated and emitted along the second direction after being reflected by the second reflecting surface 120, the first direction and the second direction are the same, and the total amount of emitted light ray is improved because the light ray emitted by the light source 200 is less blocked and cannot be emitted, and the light utilization rate is improved. Meanwhile, by adopting a parabolic emergent mode, the emergent collimation can be obviously improved, and the light supplementing effect of the reflective light supplementing device is improved; meanwhile, the light emitted by the light source 200 can only be incident on the first reflecting surface 110 and the second reflecting surface 120, and both can be controlled, thereby increasing the light control area of the reflective light compensating device.
The second light incident on the second reflecting surface 120 is directly collimated and emitted, and the light source 200 may be an LED light source, and the LED light source mounted on the lamp panel assembly 300 has a light emitting angle of 0 ° to 180 °.
The reflector 100 has a first end and a second end opposite to each other, the reflector 100 has a first end surface at the first end, the first end surface is a plane, the first focal point and the second focal point are both located in the plane where the first end surface is located, the first reflecting surface 110 and the second reflecting surface 120 are concave in the first end surface, and the first reflecting surface 110 and the second reflecting surface 120 form a concave cavity at the first end surface.
If the first focal point F1 is located at the first end surface, and the second focal point F2 is located outside the concave cavity (i.e., if the second focal point F2 is located at the left side of the current position in fig. 6, i.e., located at the first side of the line between F1 and F2 facing away from the second reflecting surface 120 shown in fig. 6), a small amount of light reflected by the first reflecting surface 110 will be incident on the light source 200 or the lamp panel assembly 300, i.e., the light source 200 or the lamp panel assembly 300 will block the reflected light of the first reflecting surface 110, so that the amount of light emitted at the third reflecting surface 130 is reduced, and the light supplementing effect is limited; if the first focal point F1 is located on the first end surface, and the second focal point F2 is located in the concave cavity (i.e. if the second focal point F2 is located on the right side of the current position in fig. 6, i.e. on the second side of the line between F1 and F2 facing the second reflecting surface 120), part of the light reflected by the first reflecting surface 110 will be incident on the second reflecting surface 120, and since the fourth focal point of the second reflecting surface coincides with the first focal point F1, the area of the second reflecting surface 120 is reduced, which may further cause that part of the light emitted by the light source 200 is directly projected onto the third reflecting surface 130, and this part of the light cannot be collimated and emitted from the third reflecting surface 130, which further results in poor collimation of the whole reflective light-compensating device.
Therefore, in the embodiment of the present application, the first focal point F1 and the second focal point F2 are both located at the first end face, that is, the connection line between the first focal point F1 and the second focal point F2 is perpendicular to the optical axis of the light source 200, that is, the connection line between the first focal point F1 and the second focal point F2 is located on the Y axis of fig. 6, which is also the major axis direction of the ellipsoid; the centerline of the light emitted by the light source 200 faces the extending direction of the Z axis, i.e. the centerline of the light emitted by the light source 200 is perpendicular to the connecting line of the first focal point F1 and the second focal point F2. Under such a setting, the light of 0-180 degrees that light source 200 launched can wholly and the collimation be gone out after the reflection of reflection spare 100, has ensured the light quantity that the collimation was gone out, and reflection spare 100 can carry out complete accuse light to light source 200, can not appear the auxiliary facula, and the illuminating effect is good.
In a further embodiment, the light reflecting member 100 has a protruding portion protruding from the first end surface, and the third reflecting surface 130 is disposed on the protruding portion, as shown in fig. 2; in this arrangement, all the light emitted by the light source 200 is incident on the first reflecting surface 110 and the second reflecting surface 120, so that a part of the light emitted by the light source 200 is prevented from directly incident on the third reflecting surface 130, and the reflected light of the part of the light is difficult to be collimated and emitted.
In the embodiment of the present application, the first reflecting surface 110 has a first edge at a first end surface, the first reflecting surface 110 has a second edge in the reflector 100, the second reflecting surface 120 has a third edge at the first end surface, and the second reflecting surface 120 has a fourth edge in the reflector 100.
In the optical axis direction of the light source 200, that is, the central line of the light distribution emitted by the light source 200, the second edge has a first distance a from the first end face, the fourth edge has a second distance b from the first end face, if the first distance a is greater than the second distance b, in the second direction, the area where the second reflecting surface 120 is located forms a first boss with respect to the first reflecting surface 110, a part of the reflected light of the area of the first reflecting surface 110 adjacent to the second reflecting surface 120 may be projected on the first boss, so that the first light emitted by collimation is reduced, the light supplementing effect is poor, and the structure with the first boss is beneficial to demolding of the light reflecting member 100 in the manufacturing process. The optical axis direction of the light source 200 is parallel to the short axis direction of the elliptical surface.
Thus, in embodiments of the present application, the first distance a is less than or equal to the second distance b; in this case, the area where the second reflecting surface 120 is located is opposite to the first reflecting surface 110, where the first boss cannot be formed, and after the first light ray incident on the first reflecting surface 110 is reflected by the first reflecting surface 110, the first light ray can be totally projected on the third reflecting surface 130, so that the number of the first light ray collimated and emergent on the third reflecting surface 130 is ensured, and the light supplementing effect of the reflective light supplementing device is ensured.
In this embodiment of the application, the reflective light compensating device further includes a lamp panel assembly 300, the light source 200 is disposed on the lamp panel assembly 300, and in the third direction, a third distance c is provided between the light source 200 and the first edge, where the third distance c is greater than or equal to 0.3mm, and in this case, a proper assembly gap is provided between the light reflecting member 100, the light source 200 and the lamp panel assembly 300, so that the light reflecting member 100 and the light source 200 are prevented from interfering with each other to cause damage to the light source 200. The third direction is the major axis direction of the elliptical surface.
In the third direction, the optical axis of the light source 200 has a fourth distance d from the second edge, the first focal point F1 has a fifth distance e from the second focal point F2, and if the fourth distance d is larger, i.e. the extension of the first reflective surface 110 is longer, correspondingly, the third reflective surface 130 needs to have a span in the second direction large enough to receive the reflected light of the first reflective surface 110, which is disadvantageous for the miniaturization of the reflective light filling device.
Therefore, in the embodiment of the present application, the fifth distance e is greater than or equal to two times the fourth distance d, the third direction is perpendicular to the second direction, and the fifth distance e is greater than or equal to two times the fourth distance d. The third direction is perpendicular to the second direction, and the third direction is the long axis direction of the elliptical surface.
The lamp panel assembly 300 has a fifth edge facing the third edge, the fifth edge being located in a projection area of the first reflecting surface 110 along the optical axis of the light source 200, the fifth edge being located at a sixth distance f from the second edge. The second light is incident on the second reflecting surface 120, and the reflected light may have a slight angle of deviation, thereby causing a small amount of reflected light of the second light to be projected on the lamp panel assembly 300.
Thus, in embodiments of the present application, the sixth distance f is greater than or equal to 0.5mm; under such a setting, the light beam of the second light beam reflected by the second reflecting surface 120 can be emitted while avoiding the shielding of the lamp panel assembly 300, so that the light supplementing effect of the reflective light supplementing device is ensured.
The third reflective surface 130 has a sixth edge at the first end surface, the sixth edge having a seventh distance g from the light source 200 in the major axis direction of the elliptical surface, the third edge having an eighth distance h from the light source 200, the third direction being perpendicular to the second direction.
If the seventh distance g is smaller than the eighth distance h, in the third direction, the area where the third reflecting surface 130 is located forms a second boss relative to the second reflecting surface 120, and a part of the reflected light of the area, adjacent to the third reflecting surface 130, of the second reflecting surface 120 is projected onto the second boss, so that the second light emitted by collimation is reduced, and the light supplementing effect is poor. Thus, in embodiments of the present application, the seventh distance g may be greater than or equal to the eighth distance h; in this case, in the third direction, the area where the third reflecting surface 130 is located does not form a second boss relative to the second reflecting surface 120, and after the second light ray incident on the second reflecting surface 120 is reflected by the second reflecting surface 120, the reflected light ray can be totally collimated and emitted, so that the number of light rays of the second light ray collimated and emitted on the second reflecting surface 120 is ensured, and the light supplementing effect of the reflective light supplementing device is ensured.
As can be seen from the foregoing, the light source 200 may be an LED light source, which may be a planar packaged LED light source or a silica gel lens LED light source, and the silica gel lens of the silica gel lens LED light source may interfere the light path of the light beam of the first reflecting surface 110, so that a part of the first light beam is more difficult to be converged at the second focal point F2 and projected onto the third reflecting surface 130. Therefore, in the embodiment of the application, the light source 200 is a planar packaged LED light source, and the light emitting surface of the planar packaged LED light source is planar, so that interference to the light path is avoided, and the light supplementing effect of the reflective light supplementing device is prevented from being affected.
The length of the light source 200 in the third direction is i, the first focal point F1 has a fifth distance e from the second focal point F2, c= (a 1-c 1-i/2). Wherein the first reflecting surface 110 satisfies an elliptic equation (y 1-e/2)/(2/a1++z12b1ζ2=1, c1=a12b12, where a1 and b1 are the semi-major axis length and the semi-minor axis length of the elliptic surface, respectively, c1 is half of the distance between the first focus F1 and the second focus F2 of the ellipsoid, and e is the distance between the first focus F1 and the second focus F2. after a1 and b1 are set, c1 is a certain value, and the corresponding relationship between c and i can be obtained according to c= (a 1-c 1-i/2).
Referring to fig. 6, a spatial coordinate system is established with the center points of the first focus F1 and the second focus F2 as the origin, the second direction as the Z axis, and the third direction as the Y axis. Wherein the first reflecting surface 110 is an elliptical surface, the coordinates of the point on the first reflecting surface 110 are P1 (z 1, y 1), so that the first reflecting surface 110 satisfies the elliptical equation (y 1-e/2)/(a1+2/b1+2=1, c1=a1+2-b 1+2, wherein a1 and b1 are the semi-major axis length and semi-minor axis length of the ellipse, respectively, c1 is the distance of the first focal point F1 or the second focal point F2 from the origin, e is the fifth distance between the first focal point F1 and the second focal point F2, and a1 and b1 can be set such that the light emitted by the light source 200 does not interfere with the light source 200 and the lamp panel assembly 300; the second reflecting surface 120 and the third reflecting surface 130 are respectively parabolic surfaces with openings facing the negative half axis of the Z axis, namely, the first direction and the second direction are the same, the fourth focus of the second reflecting surface 120 is located at the first focus F1, the third focus of the third reflecting surface 130 is located at the second focus F2, the first light rays emitted by the light source 200 are collimated and emitted along the first direction after being reflected by the first reflecting surface and the second reflecting surface in sequence, the second light rays emitted by the light source 200 are collimated and emitted along the first direction after being reflected by the second reflecting surface 120, and the reflective light supplementing device of the embodiment can realize complete light control of the light source 200 and light ray small-angle collimation and emission, and can effectively ensure the light supplementing effect of the reflective light supplementing device.
The application discloses a camera, the camera of the disclosure includes the reflection type light filling device of the embodiment disclosure.
The application discloses light filling lamp subassembly for camera, disclosed light filling lamp subassembly for camera includes light source 200 and reflector 100, and light source 200 is used for generating the emission, and reflector 100 is used for reflecting the emission, and wherein, reflector 100 includes the line segment that is used for reflecting the emission in the cross-section of third direction, and the line segment that is used for reflecting the emission is configured to include: the first line segment 111, the second line segment 121 and the third line segment 131 are sequentially connected, wherein the first line segment is adjacent to the light source 200. The first, second and third line segments 111, 121 and 131 may be corresponding line segments in the cross section of the first, second and third reflective surfaces 110, 120 and 130 in the third direction in the foregoing embodiment. The third direction may coincide with the third direction in the previous embodiment.
Wherein, the shapes of the first line segment 111, the second line segment 121, and the third line segment 131 are defined as: the first line segment 111 reflects the emitted light, all the first reflected light obtained after reflection is directly reflected again through the third line segment 131, the third reflected light obtained after reflection is collimated and emitted, and the third line segment 131 does not receive the emitted light directly from the light source 200.
The second line segment 121 reflects the emitted light, and the reflected second reflected light is collimated and emitted.
The light emitted by the light supplementing lamp assembly for the camera can be totally reflected by the reflecting piece 100, and the light supplementing rays emitted by collimation are obtained after reflection. The second reflected light and the third reflected light may be collimated out toward the first direction. The collimated light emission means that the light rays emitted by the second reflected light ray and the third reflected light ray are parallel light rays. The light emitted from the light source 200 to the first line segment 111 in this embodiment is the first light in the foregoing embodiment, and the light emitted from the light source 200 to the second line segment 121 is the second light in the foregoing embodiment.
The emitted light emitted by the light source 200 is emitted to the first line segment 111 and the second line segment 121, the emitted light emitted by the light source 200 to the first line segment 111 is emitted to the third line segment 131 through the first reflected light formed by the reflection of the first line segment 111, and the third reflected light formed by the reflection of the third line segment 131 is collimated and emitted. The light emitted from the light source 200 to the second line segment 121 is totally collimated and emitted by the second reflected light formed by the reflection of the second line segment 121, so that the light emitted from the light source 200 is totally collimated and emitted, and the utilization rate of the light emitted from the light source 200 during light filling can be improved.
Further, the camera light supplement lamp assembly may further include a lamp panel assembly 300. The light source 200 may be mounted on the lamp panel assembly 300. In the third direction, the light source 200 and the lamp panel assembly 300 are opposite to the region between the two end points of the first line segment 111, so that the light source 200 and the lamp panel assembly 300 are not disposed in the optical path of the light supplementing light, and the third direction is perpendicular to the optical axis of the light source.
The first reflected light may be converged at the convergence point and then directed to the third segment 131. Specifically, the emitted light emitted from the light source 200 to the first segment 111 is reflected by the first segment 111 to form a first reflected light, and the first reflected light is converged at the convergence point and then emitted to the third segment 131. For the case of converging at different intersection points, the first line segment 111 may be configured accordingly, so as to meet the requirement of converging the first reflected light. The first reflected light is converged and then emitted to the third segment 131, so that the third segment 131 is designed conveniently, so that the first reflected light emitted from the convergence point can be collimated and emitted when reaching the third segment 131, for example, the convergence point can be a focal point of the third segment, and the light emitted from the focal point of the third segment to the third segment 131 can be collimated and emitted.
Specifically, in the third direction, the convergence point is disposed between the light source 200 and one end of the second line segment 121 away from the light source 200, and a line segment connecting the convergence point and the light source 200 is parallel to the third direction. One end of the third line segment 131, which is close to the light source 200, is located in the extending direction of the connecting line segment between the converging point and the light source 200, and the converging point is located between one end of the third line segment 131, which is close to the light source 200, and the light source 200.
The first line segment 111 is a first elliptical line segment, the third line segment 131 is a first parabolic line segment, and the convergence point is a second focal point F2 common to the first elliptical line segment and the first parabolic line segment. The focus shared by the first elliptic line segment and the first parabolic line segment is a second focus F2, the light source 200 is located at a first focus F1 of the first elliptic line segment, the first focus F1 is different from the second focus F2, the emitted light emitted by the light source 200 is converged at the second focus F2 through reflection of the first elliptic line segment, and is emitted to the first parabolic line segment after passing through the second focus F2, and the second focus F2 is the focus of the first parabolic line segment, so that the first reflected light emitted from the focus of the first parabolic line segment to the first parabolic line segment is collimated and emitted through the third reflected light formed by reflection of the first parabolic line segment.
Further, referring to fig. 6, a spatial coordinate system is established with the center points of the first focus F1 and the second focus F2 as the origin, the first direction as the Z axis, and the third direction as the Y axis, the first direction and the third direction being perpendicular, and the coordinates of the point on the first elliptical line segment being P1 (Z1, Y1). The length value of the light source 200 in the third direction is i, and the closest distance of the light source 200 to the first line segment 111 in the third direction is c, i.e. corresponds to the third distance between the light source 200 and the first edge in the third direction in the previous embodiment. The distance value of the light source 200 from the convergence point in the third direction is e, i.e., the distance between the first focus F1 and the second focus F2 in the foregoing embodiment. Then c= (a 1-c 1-i/2); wherein the first elliptical segment satisfies the elliptical equation (y 1-e/2)/(2/a1++z1ζ2/b1ζ2=1, c1=a1ζ2-b1ζ2, wherein a1 and b1 are the semi-major axis length and the semi-minor axis length of the first elliptical segment, e is the distance between the first focus F1 and the second focus F2, c1 is half the distance between the first focus F1 and the second focus F2 of the first elliptical segment, i.e., c1 is e/2, respectively. after a1 and b1 are set, c1 is a determined value, and the relationship between c and i can be determined from c= (a 1-c 1-i/2).
Specifically, the first line segment 111 may be a first elliptical line segment, the second line segment 121 may be a second parabolic line segment, the third line segment 131 may be a first parabolic line segment, and the first focal point F1 of the first elliptical line segment is a first focal point F1 common to the first elliptical line segment and the second parabolic line segment. The second focal point F2 of the first elliptical line segment is a second focal point F2 shared by the first elliptical line segment and the first parabola, the light source 200 may be located at the first focal point F1 of the first elliptical line segment, the first focal point F1 is different from the second focal point F2, and the focal point of the second parabola line segment is located at the light source 200, that is, located at the first focal point F1.
The emitted light emitted by the light source 200 is converged at the second focus F2 through the reflection of the first elliptical line segment, and then is emitted to the first parabolic line segment after passing through the second focus F2, and the second focus F2 is the focus of the first parabolic line segment, so that the first reflected light emitted from the focus of the first parabolic line segment to the first parabolic line segment is collimated and emitted through the third emitted light formed after being emitted through the first parabolic line segment. The emitted light emitted by the light source 200 is directly collimated and emitted after being reflected by the second parabolic line segment.
It should be noted that, herein, the first focal point F1 and the second focal point F2 of the first elliptical line segment are the first focal point F1 and the second focal point F2 of the elliptical surface, the focal point of the first parabolic line segment is the focal point of the first paraboloid, i.e. the second focal point F2, and the focal point of the second parabolic line segment is the focal point of the second paraboloid, i.e. the first focal point F1.
The reflector 100 may have a first end and a second end opposite to each other, where the reflector 100 has a first end surface at the first end, the first end surface being planar, the first focal point and the second focal point being located in the plane where the first end surface is located, and the first line segment and the second line segment being recessed in the first end surface.
If the first focal point F1 is located on the first end surface, and the second focal point F2 is located on a side of the first end surface facing away from the first line segment recessed in the first end surface, (i.e. assuming that the second focal point F2 is located on the left side of the current position in fig. 6), a small portion of the first reflected light reflected by the first line segment 111 is reflected onto the lamp panel assembly 300 and the light source 200, so that the first reflected light reflected to the third line segment 131 is reduced, thereby affecting the light filling effect. If the first focal point F1 is located at the first end surface and the second focal point F2 is recessed at the first end surface (i.e. it is assumed that the second focal point F2 is located at the right side of the current position in fig. 6), then a portion of the first reflected light reflected by the first line segment 111 is projected onto the second line segment 121.
Further, the third line segment 131 may protrude from the first end surface, so as to avoid the emission light emitted by the light source 200 from being projected onto the third line segment 131. The light source 200 may be an LED light source having a light emitting angle of 0 ° to 180 ° mounted on the lamp panel assembly 300. The centerline of the light emitted by the light source 200 faces the extending direction of the Z axis, i.e. the centerline of the light emitted by the light source 200 is perpendicular to the connecting line of the first focal point F1 and the second focal point F2.
The application discloses a camera, and the camera of the disclosure includes the light filling lamp subassembly for the camera in the above-mentioned embodiment.
A reflective light supplementing device comprising a light reflecting member 100 and a light source 200, said light source 200 being arranged adjacent to said light reflecting member 100; wherein:
the reflector 100 has a first reflecting surface 110, a second reflecting surface 120 and a third reflecting surface 130, and the first reflecting surface 110 and the second reflecting surface 120 face the light emitting end of the light source 200 respectively;
the first reflecting surface 110 is an elliptical surface, the first reflecting surface 110 has a first focus and a second focus, the light source 200 is disposed at the first focus of the first reflecting surface 110, the third reflecting surface 130 is a paraboloid, the third reflecting surface 130 has a third focus, the third focus coincides with the second focus, the first light emitted by the light source 200 is collimated and emitted along a first direction after being reflected by the first reflecting surface 110 and the third reflecting surface 130 in sequence, and the first direction is the opening direction of the third reflecting surface 130;
the second reflecting surface 120 is a paraboloid, the second reflecting surface 120 has a fourth focal point, the fourth focal point coincides with the first focal point, the second light emitted by the light source 200 is collimated and emitted along a second direction after being reflected by the second reflecting surface 120, the second direction is an opening direction of the second reflecting surface 120, and the first direction is the same as the second direction.
The reflector 100 has a first end and a second end opposite to each other, the reflector 100 has a first end surface at the first end, the first end surface is a plane, the first focal point and the second focal point are both located in the plane where the first end surface is located, and the first reflecting surface 110 and the second reflecting surface 120 are concave in the first end surface.
The reflector 100 has a protrusion protruding from the first end surface, and the third reflecting surface 130 is disposed on the protrusion.
The first reflecting surface 110 has a first edge at the first end surface, the first reflecting surface 110 has a second edge in the reflector 100, the second reflecting surface 120 has a third edge at the first end surface, and the second reflecting surface 120 has a fourth edge in the reflector 100;
in the optical axis direction of the light source 200, the second edge has a first distance a from the first end surface, the fourth edge has a second distance b from the first end surface, and the first distance a is smaller than or equal to the second distance b.
In a third direction, a third distance c is provided between the light source 200 and the first edge, the third distance c is greater than or equal to 0.3mm, and the third direction is the major axis direction of the elliptical surface.
In a third direction, the optical axis of the light source 200 is a fourth distance d from the second edge, the first focal point is a fifth distance e from the second focal point, the fifth distance e is greater than or equal to two times the fourth distance d, the third direction is perpendicular to the second direction, and the third direction is the long axis direction of the elliptical surface.
The reflective light compensating device further comprises a lamp panel assembly 300, the light source 200 is disposed on the lamp panel assembly 300, the lamp panel assembly 300 has a fifth edge facing the third edge, the fifth edge is located in a projection area of the first reflecting surface 110 along the optical axis of the light source 200, the fifth edge is spaced from the second edge by a sixth distance f, and the sixth distance f is greater than or equal to 0.5mm.
The third reflective surface 130 has a sixth edge at the first end surface, the sixth edge having a seventh distance g from the light source 200 in the major axis direction of the elliptical surface, the third edge having an eighth distance h from the light source 200, the seventh distance g being greater than or equal to the eighth distance h.
The light source 200 is a planar packaged LED light source.
A camera comprising the reflective light compensating device of the above embodiments.
A light filling lamp assembly for a camera, comprising:
a light source 200 for generating emitted light;
a light reflecting member 100 for reflecting the emitted light, wherein the light reflecting member 100 includes a line segment for reflecting the emitted light in a section in a third direction, the line segment being configured to include:
a first line segment 111, a second line segment 121, and a third line segment 131 connected in sequence, wherein the first line segment 111 is adjacent to the light source 200;
the shapes of the first line segment 111, the second line segment 121, and the third line segment 131 are defined as:
the first line segment 111 reflects the emitted light, all the first reflected light obtained after reflection is directly reflected again through the third line segment 131, the third reflected light obtained after reflection is collimated and emitted, and the third line segment 131 does not receive the emitted light directly from the light source 200;
the second line segment 121 reflects the emitted light, and the reflected second reflected light is collimated and emitted;
the emitted light of the light-compensating lamp assembly for the camera may be totally reflected by the reflecting member 100, and the light-compensating light rays emitted by collimation are obtained after reflection.
The light supplementing lamp assembly for the camera further comprises a lamp panel assembly 300; in the third direction, the light source 200 and the lamp panel assembly 300 are opposite to the region between the two end points of the first line segment 111, so that the light source 200 and the lamp panel assembly 300 are not disposed in the optical path of the light supplementing light, and the third direction is perpendicular to the optical axis of the light source 200.
The first reflected light may be converged at the convergence point and then directed to the third line segment 131.
In the third direction, the convergence point is disposed between the light source 200 and one end of the second line segment 121 away from the light source 200, and a connecting line segment of the convergence point and the light source 200 is parallel to the third direction.
The first line segment 111 is a first elliptical line segment, the third line segment 131 is a first parabolic line segment, the convergence point is a second focus shared by the first elliptical line segment and the first parabolic line segment, the light source 200 is located at a first focus of the first elliptical line segment, and the first focus is different from the second focus.
The length of the light source 200 in the third direction is i, the nearest distance between the light source 200 and the first line segment 111 in the third direction is c, and the distance value between the light source 200 and the convergence point in the third direction is e, then c=a1-c 1-i/2;
wherein the first elliptical segment satisfies the elliptical equation y 1-e/2^2/a1++z12/b1ζ2=1, c1=a12b1ζ2, wherein a1 and b1 are the semi-major axis length and the semi-minor axis length of the first elliptical segment, c1 is half of the distance between the first focus and the second focus of the first elliptical segment, and e is the distance between the first focus and the second focus.
The first line segment 111 is a first elliptical line segment, the second line segment 121 is a second parabolic line segment, the third line segment 131 is a first parabolic line segment, and a first focal point of the first elliptical line segment is a first focal point common to the first elliptical line segment and the second parabolic line segment.
The light reflecting member 100 has a first end and a second end opposite to each other, the light reflecting member 100 has a first end surface at the first end, the first end surface is a plane, the first focal point and the second focal point are located in the plane where the first end surface is located, and the first line segment 111 and the second line segment 121 are recessed in the first end surface.
The third segment protrudes from the first end face.
A camera comprising the light filling lamp assembly for a camera described in the above embodiments.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention.
Claims (10)
1. A light filling lamp assembly for a camera, comprising:
a light source (200) for generating emitted light;
-a reflector (100) for reflecting the emitted light, wherein the reflector (100) comprises, in a cross-section in a third direction, a line segment for reflecting the emitted light, the line segment being configured to comprise:
a first line segment (111), a second line segment (121), and a third line segment (131) connected in sequence, wherein the first line segment (111) is adjacent to the light source (200);
the shapes of the first line segment (111), the second line segment (121), and the third line segment (131) are defined as:
the first line segment (111) reflects the emitted light, all the first reflected light obtained after reflection is directly reflected again through the third line segment (131), the third reflected light obtained after reflection is collimated and emitted, and the third line segment (131) does not receive the emitted light directly from the light source (200);
the second line segment (121) reflects the emitted light, and second reflected light obtained after reflection is collimated and emitted;
the emitted light of the light supplementing lamp component for the camera can be totally reflected by the reflecting piece (100), and the collimated and emitted light supplementing rays are obtained after reflection;
wherein the third direction is perpendicular to the optical axis of the light source (200).
2. The light filling lamp assembly for a camera according to claim 1, further comprising a lamp panel assembly (300); in the third direction, the light source (200) and the lamp panel assembly (300) are opposite to the region between the two end points of the first line segment (111), so that the light source (200) and the lamp panel assembly (300) are not arranged in the light path of the light supplementing light.
3. The light filling lamp assembly for a camera according to claim 2, wherein the first reflected light rays can be converged at a convergence point and then directed to the third line segment (131).
4. A light filling lamp assembly for a camera according to claim 3, characterized in that in the third direction the convergence point is arranged between the light source (200) and an end of the second line segment (121) remote from the light source (200), and that a line segment connecting the convergence point and the light source (200) is parallel to the third direction.
5. A light filling lamp assembly for a camera according to claim 3, wherein the first line segment (111) is a first elliptical line segment, the third line segment (131) is a first parabolic line segment, the convergence point is a second focus shared by the first elliptical line segment and the first parabolic line segment, the light source (200) is located at a first focus of the first elliptical line segment, and the first focus is different from the second focus.
6. The light compensating lamp assembly for a camera according to claim 5, wherein a length of the light source (200) in the third direction is i, a closest distance of the light source (200) from the first line segment (111) in the third direction is c, a distance value of the light source (200) from the convergence point in the third direction is e, c= (a 1-c 1-i/2);
wherein the first elliptical segment satisfies an elliptical equation (y 1-e/2)/(a 1-2/a 1-2+z1-2/b 1-2=1, c1=a1-2-b 1-2, wherein a1 and b1 are the semi-major axis length and semi-minor axis length of the first elliptical segment, respectively, c1 is half of the distance between the first focus and the second focus of the first elliptical segment, and e is the distance between the first focus and the second focus.
7. A light filling lamp assembly for a camera according to claim 3, characterized in that the first line segment (111) is a first elliptical line segment, the second line segment (121) is a second parabolic line segment, the third line segment (131) is a first parabolic line segment, and a first focal point of the first elliptical line segment is a first focal point common to the first elliptical line segment and the second parabolic line segment.
8. The light filling lamp assembly for a video camera according to claim 5, wherein the light reflecting member (100) has a first end and a second end opposite to each other, the light reflecting member (100) has a first end face at the first end, the first end face is a plane, the first focal point and the second focal point are located in the plane where the first end face is located, and the first line segment (111) and the second line segment (121) are recessed in the first end face.
9. A light filling lamp assembly for a camera as recited in claim 8, wherein the third segment protrudes from the first end face.
10. A camera comprising the light filling lamp assembly for a camera according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210654575.XA CN115047692B (en) | 2022-06-10 | 2022-06-10 | Light filling lamp subassembly and camera for camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210654575.XA CN115047692B (en) | 2022-06-10 | 2022-06-10 | Light filling lamp subassembly and camera for camera |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115047692A CN115047692A (en) | 2022-09-13 |
| CN115047692B true CN115047692B (en) | 2023-07-28 |
Family
ID=83161967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210654575.XA Active CN115047692B (en) | 2022-06-10 | 2022-06-10 | Light filling lamp subassembly and camera for camera |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115047692B (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3992160B2 (en) * | 1996-05-07 | 2007-10-17 | 東芝ライテック株式会社 | Illumination control method for horizont light |
| JP2001318408A (en) * | 2000-05-12 | 2001-11-16 | Canon Inc | Illuminator and photographing device equipped therewith |
| JP3481599B2 (en) * | 2000-07-14 | 2003-12-22 | 京都電機器株式会社 | Linear lighting device |
| JP4171339B2 (en) * | 2003-04-17 | 2008-10-22 | オリンパス株式会社 | Light reflector and flash light emitting device using the same |
| DE102012111639A1 (en) * | 2012-11-30 | 2014-06-05 | Hella Kgaa Hueck & Co. | Additional light module for a headlight of a vehicle |
| CN104676490B (en) * | 2015-02-16 | 2017-01-04 | 深圳市科曼医疗设备有限公司 | Light fixture and operating lamp |
| TWI625589B (en) * | 2017-03-27 | 2018-06-01 | 晶睿通訊股份有限公司 | Lamp cup and camera |
| CN109027765B (en) * | 2017-06-09 | 2021-05-18 | 杭州海康威视数字技术股份有限公司 | Light filling lens, light filling lamp and camera |
-
2022
- 2022-06-10 CN CN202210654575.XA patent/CN115047692B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN115047692A (en) | 2022-09-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5003435A (en) | Automotive lamp assembly | |
| US8820991B2 (en) | Lighting or signalling device with optical guide for motor vehicles | |
| CN109477631B (en) | Lighting device | |
| WO2017017981A1 (en) | Optical device | |
| US20070236950A1 (en) | Headlight assembly having strongly trained cut-off | |
| US8562191B2 (en) | Vehicle light | |
| US8029160B2 (en) | Illumination device having bi-convex lens assembly and coaxial concave reflector | |
| CN112469941A (en) | Front light device | |
| CN105716023A (en) | Automobile headlamp assembly and automobile headlamp | |
| CN108375043B (en) | Light beam adjusting device, optical assembly and lighting and/or signal indicating device | |
| KR20190080506A (en) | Lamp for vehicle | |
| CN115047692B (en) | Light filling lamp subassembly and camera for camera | |
| CN115016200B (en) | Reflective light supplementing device and camera | |
| US11555989B2 (en) | Optical device for modifying light distribution | |
| KR20130077499A (en) | Free-form lens with the effect of overlapping illumination patterns formed by different surfaces of the lens in order to improve the manufacturing tolerance of a led luminaire | |
| US9329374B2 (en) | Projection lens and optical surface determination method | |
| EP3677829B1 (en) | Primary lens, light-emitting assembly, light-emitting system, and headlight | |
| US10941917B2 (en) | Lighting tool for vehicle | |
| CN113251384A (en) | Light collimating assembly and light emitting device | |
| KR20220006316A (en) | Lamp for vehicle | |
| US20190346107A1 (en) | Automotive lighting system for vehicles | |
| CN220323631U (en) | Refractive optical unit | |
| CN113412180A (en) | Method for manufacturing light guide plate, and vehicle lamp | |
| CN110094685B (en) | Lighting device with multiple working states | |
| CN209839953U (en) | Lighting device with multiple operating condition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |