CN213957766U - Lamp set - Google Patents

Abstract

The utility model relates to the technical field of lighting technology, a lamp is provided, including the light source array, collimating lens array, preceding zoom lens and back zoom lens have set gradually on the light-emitting light path of light source array, and the light source array includes a plurality of light sources, and the collimating lens array includes a plurality of collimating lens group that distribute at the coplanar, each light source and each collimating lens group one-to-one, and the position of preceding zoom lens can be followed the light-emitting light path and come and go for the light source array and adjust. The embodiment of the application can collimate the light emitted by each light source through each collimating lens group, so that the light emitted from the collimating lens array is parallel or almost parallel, the emitted light is more concentrated, and the brightness is higher.

Description

Lamp set

Technical Field

The application relates to the technical field of lighting, in particular to a lamp.

Background

For the field of supplementary lighting in shooting, supplementary lighting needs to be performed on a shooting object in a shooting scene. Because Light Emitting Diodes (LEDs) have the advantages of energy saving, environmental protection, long service life, and the like, for the purpose of energy saving and environmental protection, the shooting and lighting device usually uses LEDs as Light sources, and because the Light Emitting angle of the LEDs is a 180 ° lambertian model, the Light Emitting angle is large, the lighting area is also large, and the illuminance of the lighting center point is not high, the lighting requirement of shooting scenes is difficult to achieve.

The light emitting angle of the existing lighting lamp is mostly fixed, so that a lamp with adjustable light emitting angle and higher illumination intensity needs to be designed.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a lamp, can adjust luminous angle, improves illumination brightness to satisfy the lighting needs of shooting the scene better. The specific scheme is as follows:

the embodiment of the application provides a lamp, which comprises a light source array, wherein a collimating lens array, a front zoom lens and a rear zoom lens are sequentially arranged on a light emitting path of the light source array;

the light source array comprises a plurality of light sources, the collimating lens array comprises a plurality of collimating lens groups distributed on the same plane, the distribution plane of each collimating lens group is perpendicular to the light-emitting light path, and each light source corresponds to each collimating lens group one by one;

the position of the front zoom lens can be adjusted back and forth along the light-emitting light path relative to the light source array.

Optionally, the front zoom lens is identical in structure to the rear zoom lens.

Optionally, the front zoom lens and the rear zoom lens are symmetrically arranged with respect to a first straight line, and the first straight line is: a perpendicular bisector of a line connecting the centers of the front zoom lens and the rear zoom lens.

Optionally, the front zoom lens and the rear zoom lens are double-convex spherical mirrors, and curvatures of two spherical surfaces of the double-convex spherical mirrors are different.

Optionally, the spherical surface with large curvature of the front zoom lens faces the collimating lens array, and the spherical surface with small curvature faces away from the collimating lens array.

Optionally, the ratio of the radius of curvature of the spherical surface with small curvature to the radius of curvature of the spherical surface with large curvature of the front zoom lens ranges from 2.5 to 3.5.

Optionally, the collimating lens group includes a front collimating lens and a rear collimating lens sequentially disposed along the light exit path.

Optionally, when the distance between the front zoom lens and the collimating lens array is less than a preset distance, the object focal plane of the rear zoom lens coincides with the square focal plane of the front zoom lens.

Optionally, the position of the rear zoom lens is fixed with respect to the light source array;

when the front zoom lens is adjusted in a direction away from the light source array, the light exit angle of the light emitted from the rear zoom lens becomes large.

Optionally, the light emitting surface of each light source is rectangular, and an extension line of a center line of the light emitting surface of each light source intersects with an axial line of the light source array.

Optionally, the collimating lens array is a fly-eye lens.

Optionally, each lens of the collimating lens array, the front zoom lens, and the rear zoom lens are all circular in shape.

The lamp provided by the embodiment of the application has the advantages that the collimating lens array, the front zoom lens and the rear zoom lens are sequentially arranged on the light emitting path of the light source array, the light source array comprises a plurality of light sources, the collimating lens array comprises a plurality of collimating lens groups distributed on the same plane, each light source corresponds to each collimating lens group in a one-to-one mode, and the position of the front zoom lens can be adjusted back and forth relative to the light source array along the light emitting path.

Each light source in the embodiment of the application all corresponds a collimating lens group, and the light that can send each light source through each collimating lens group is collimated for the light that sends from the collimating lens array is parallel or nearly parallel light, and the light that sends is more concentrated, and luminance is also higher, and luminous angle is also littleer, luminance requirement when can satisfying the illumination. In addition, in the embodiment of the application, the position of the front zoom lens relative to the light source array along the light emitting optical path can be adjusted to zoom, so that the light emitting angle of light emitted from the rear zoom lens can be adjusted, the long-distance long-focus illumination requirement of a small area can be met, and the short-focus illumination requirement of a wide angle and a large area can also be met.

Drawings

Fig. 1 is a schematic structural diagram of a lamp provided in an embodiment of the present application;

FIG. 2 is a schematic structural diagram illustrating an installation relationship between a light source and a collimating lens group provided in an embodiment of the present application;

FIG. 3 is a schematic structural diagram of an arrangement of a front zoom lens and a rear zoom lens provided in an embodiment of the present application;

FIGS. 4a to 4c are schematic diagrams illustrating light transmission of the front zoom lens provided in the embodiments of the present application at different positions;

FIG. 5 is a schematic structural diagram of another arrangement of a front zoom lens and a rear zoom lens provided in an embodiment of the present application;

fig. 6 is a schematic structural diagram of a fly-eye lens provided in an embodiment of the present application;

FIG. 7 is a schematic structural diagram of a collimating lens array formed by a single lens according to an embodiment of the present application;

FIG. 8 is a schematic structural diagram illustrating a positional relationship between components of a lamp according to an embodiment of the present disclosure;

FIG. 9 is a schematic structural diagram illustrating a positional relationship between a light source and a collimating lens group according to an embodiment of the present application;

the numbers in the figures are respectively:

100. an array of light sources; 110. a light source; 120. a support; 200. a collimating lens array; 230. a collimating lens group; 231. a front collimating lens; 231. a post-collimating lens; 310. a front zoom lens; 320. a rear zoom lens; 400. a printed circuit board.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. In the description of the embodiments herein, "/" means "or" unless otherwise specified, for example, a/B may mean a or B; "and/or" herein is merely an association describing an associated object, and means that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of the present application, "a plurality" means two or more than two.

In the following, the terms "first", "second" and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", "third" may explicitly or implicitly include one or more of the features.

The lighting lamp is widely applied to scenes such as photography supplementary lighting, stage light following, light condensation and the like. Aiming at different scenes, the sizes of the illumination areas are different, so that the shooting light supplement illumination lamp needs to have a zooming function. The LED light source is divided into a patch LED and an integrated LED according to different packaging modes, the integrated LED has the characteristics of high brightness, centralized light emitting area and the like, when the integrated LED is used as a light source for shooting a spotlight, the light source belongs to a large-size point light source, the aperture of an optical system of the spotlight is large, the cost of the optical system is high, when the patch LED is used as the light source for shooting the spotlight, the aperture of the optical system required by a single light source is small, the optical system is easy to process, but a plurality of light sources and a plurality of optical systems are required to be arrayed to form a surface light source.

In the shooting illumination field, the shooting light filling light needs great power to reach bigger luminance, simultaneously for the close-up illumination light filling of far and near distance, need lamps and lanterns to possess the focusing function, the big better of scope that can focus, lamps and lanterns can long-range long focus of going on of small region promptly and chase after light, again can short focus wide angle large tracts of land illumination. In the related art, when a smaller-angle and approximately-collimated-angle variable-focus follow-up lamp is required for illumination, an LED integrated light source with a smaller area is often adopted to reduce the aperture of a zoom optical system, only one LED integrated light source is provided for a lamp of the optical system, when the power is higher, the requirement on a heat dissipation system of the LED integrated light source is higher due to the fact that the area of the integrated light source is smaller and the heat dissipation is relatively concentrated, and when the power is higher, the cost of the heat dissipation system is high.

The lighting fixture generally needs a large amount of power to achieve high-brightness lighting, and the LED integrated light source has characteristics of high brightness, concentrated light emitting area, and the like, so in the related art, the LED integrated light source is generally used as a light source of the lighting fixture. Because the LED integrated light source has a small light-emitting area, the heat power consumption is concentrated, and the lighting lamp is difficult to radiate heat.

The application provides an optical system of lamps and lanterns can adjust luminous angle, improves illumination brightness to satisfy the lighting needs of shooting the scene better.

As shown in fig. 1 to fig. 2, a lamp provided in an embodiment of the present application includes: the light source array 100, the light-emitting path of the light source array 100 is provided with a collimating lens array 200, a front zoom lens 310 and a rear zoom lens 320 in sequence. The light source array 100 includes a plurality of light sources 110 distributed on the same plane, the distribution plane of each collimating lens group 230 is perpendicular to the light-emitting optical path, the collimating lens array 200 includes a plurality of collimating lens groups 230, and each light source 110 corresponds to each collimating lens group 230 one by one; the position of the front zoom lens 310 is reciprocally adjustable along the light-exit path with respect to the light source array 100.

In the embodiment of the present application, the light source array 100 including the plurality of light sources 110 may form a surface light source. The number of light sources 110 included in the light source array 100 may be determined according to the power of the luminaire, the power of the light sources 110, and when the power of the light sources 110 is determined, the larger the power of the luminaire, the larger the number of light sources.

In the embodiment of the present application, the collimating lens group 230 may include one collimating lens, and may also include two collimating lenses or a plurality of collimating lenses sequentially disposed along the light-emitting path. In an alternative embodiment, as shown in fig. 2, one collimating lens group 230 may include a front collimating lens 231 and a rear collimating lens 232 sequentially disposed along the light-emitting path, and the collimating lens group 230 with this structure has a good collimating effect and a simple structure of each collimating lens. In the embodiment of the present application, specific structures of the front collimating lens 231 and the rear collimating lens 232 may be determined according to a size of a light emitting surface of the light source 110 and a distribution condition of light emitting intensity, materials of the front collimating lens 231 and the rear collimating lens 232 may be the same or different, geometric structures of the front collimating lens 231 and the rear collimating lens 232 may be the same or different, a collimating lens included in the collimating lens group 230 may be a spherical lens or an aspherical lens, in the present application, light emitted by the light source 110 can pass through the collimating lens group 230 as much as possible, and can be emitted from the collimating lens group 230 as parallel as possible, and a specific structure of the collimating lens group 230 is not limited in the present application. Alternatively, the area of the rear collimating lens 232 may be larger than that of the front collimating lens 231 to collimate the light emitted from the light source 110 as much as possible.

In the embodiment of the present application, each light source 110 corresponds to each collimating lens group 230, that is, one light source 110 corresponds to one collimating lens group 230, so that light emitted from each light source 110 can be collimated by the collimating lens group 230.

The position of the rear zoom lens 320 may be fixed with respect to the light source array 100, and the position of the rear zoom lens 320 may also be adjusted back and forth with respect to the light source array 100 along the light exit path. Alternatively, in order to make the zoom structure simpler and the zoom light barrel structure simpler, the position of the rear zoom lens 320 may be fixed with respect to the light source array 100, so that the user can adjust only the front zoom lens 310 to zoom in use, and the user operation is simpler.

The front zoom lens 310 and the rear zoom lens 320 may be the same or different, the front zoom lens 310 and the rear zoom lens 320 may be a biconvex spherical mirror, a planoconvex spherical mirror, a planoconcave spherical mirror, or a biconcave spherical mirror, or may be other types of lenses (e.g., cylindrical lenses) having a zoom function, and the front zoom lens 310 and the rear zoom lens 320 may implement the zoom function, and the specific structures and arrangement manners of the two are not limited in the present application. In one embodiment, the front zoom lens 310 and the rear zoom lens 320 may be biconvex spherical mirrors for better focusing and better spot imaging.

In the embodiment of the present application, as shown in fig. 1, each light source 110 may be soldered on the printed circuit board 400 to realize the light emitting control of the light source 110.

The light source 110 may be any one of an LED, an organic light emitting diode, and a quantum dot light emitting diode, or may be another light source, which is not particularly limited in the embodiment of the present application. Alternatively, the light source 110 may be a patch LED, and when the patch LED is used as the light source 110 of the lamp, the aperture of the optical system required by the single light source 110 is small, and the optical system is easier to process.

In the embodiment of the present application, because the light emitting angle of the light source 110 in the light source array 100 is large, generally 180 °, each light source 110 in the embodiment of the present application corresponds to one collimating lens group 230, and the light emitted by each light source 110 can be collimated by each collimating lens group 230, so that the light emitted from the collimating lens array 200 is parallel or nearly parallel, the emitted light is more concentrated, the brightness is higher, the light emitting angle is smaller, and the brightness requirement during illumination can be met.

The lamp provided by the embodiment of the application comprises the light source array 100 with the plurality of spaced light sources 110 to form the surface light source, so that heat power consumption is more dispersed, heat dissipation is easier, the requirement on a heat dissipation system is lower, a common air cooling system can meet the heat dissipation requirement, and the cost of the heat dissipation system is lower.

In addition, in the embodiment of the present application, the position of the front zoom lens 310 along the light emitting optical path relative to the light source array 100 may be adjusted to zoom, so that the light emitting angle of the light emitted from the rear zoom lens 320 may be adjusted, and the requirements for long-focus illumination in a small area and a long distance and short-focus illumination in a wide area may be met. Fig. 4a to 4c show light transmission diagrams of the front zoom lens 310 at different positions. In one embodiment, as shown in fig. 4a to 4c, when the front zoom lens 310 is adjusted in a direction away from the light source array 100 and the position of the rear zoom lens 320 is fixed (the distance M between the rear zoom lens 320 and the collimator lens array 200 is fixed), the light exit angle of the light emitted from the rear zoom lens 320 becomes large. In fig. 4a, the phase focal plane of the front zoom lens 310 and the object focal plane of the rear zoom lens 320 are overlapped, and the light emitted from the rear zoom lens 320 is parallel light or nearly parallel light. As shown in fig. 4b, when a larger angle of outgoing light is required, the front zoom lens 310 may be adjusted to be away from the light source array 100 to be close to the rear zoom lens 320, and in fig. 4b, the front zoom lens 310 is in a middle focus state when the square focal plane is located between the front zoom lens 310 and the rear zoom lens 320. As shown in fig. 4c, when the front zoom lens 310 is further adjusted in a direction away from the light source array 100 and further approaches the rear zoom lens 320, the angle of the outgoing light becomes further larger, and in fig. 4c, the phase focal plane of the front zoom lens 310 is located behind the rear zoom lens 320 and is in a short focus state.

In one embodiment, as shown in fig. 1, 3, 4a to 4c, and 5, the front zoom lens 310 and the rear zoom lens 320 may have the same structure for easy manufacturing. In an alternative embodiment, the front zoom lens 310 and the rear zoom lens 320 may have the same material, geometry, and size, that is, the front zoom lens 310 and the rear zoom lens 320 are two identical lenses, so that the lamp can be manufactured more easily, and the manufacturing cost can be reduced.

In one embodiment, the front zoom lens 310 and the rear zoom lens 320 may be symmetrically disposed. Specifically, as shown in fig. 5, the front zoom lens 310 and the rear zoom lens 320 may be symmetrically disposed with respect to a perpendicular bisector of a line connecting centers thereof. The front zoom lens 310 and the rear zoom lens 320 are symmetrically arranged, so that the phase difference after zooming is small, and the imaging quality of the light source is good.

In one embodiment, the front zoom lens 310 and the rear zoom lens 320 may be biconvex spherical mirrors, and curvatures of two spherical surfaces of the biconvex spherical mirrors are different, so that the zoom lens with such a structure has a better focusing effect on light, and a light angle variation range of the emitted light is larger.

In one embodiment, to image the light spots more effectively and make the light spots more uniform, the spherical surface with large curvature of the front zoom lens 310 may face the collimator lens array 200, and the spherical surface with small curvature may be back-aligned to the collimator lens array 200.

In one embodiment, the ratio of the radius of curvature of the spherical surface with small curvature of the front zoom lens 310 to the radius of curvature of the spherical surface with large curvature is in a range of 2.5 to 3.5, for example, the ratio of the radius of curvature of the spherical surface with small curvature of the front zoom lens 310 to the radius of curvature of the spherical surface with large curvature may be any one of 2.5, 2.8, 3, and 3.5. That is, the range of the ratio of the radius of curvature of the spherical surface having a large curvature to the radius of curvature of the spherical surface having a small curvature is 1: 2.5-1: 3.5, specifically, the ratio of the radius of curvature of the spherical surface with a large curvature to the radius of curvature of the spherical surface with a small curvature may be 1: 3. the design of the camber of this embodiment can make the exit angle of emergent light change in 0 ~ 60 angle, and the change range is big, and the facula illuminance that forms in the change process is even, and the facula center can not darken, can satisfy the lighting needs of shooting, each scene of stage performance lamp well.

In one embodiment, as shown in fig. 3, when the distance L between the front zoom lens 310 and the collimator lens array 200 is less than the preset distance L, the object focal plane of the rear zoom lens 320 coincides with the phase focal plane of the front zoom lens 310. The preset distance L may be any distance from 1 mm to 5 mm, or other smaller distances. The distance L between the front zoom lens 310 and the collimator lens array 200 is smaller than the predetermined distance L, which indicates that the front zoom lens 310 moves to a position very close to the collimator lens array 200, and it can be understood that the front zoom lens 310 should not contact the collimator lens array 200 to avoid the collision and damage of the two, so that a gap exists between the front zoom lens 310 and the collimator lens array 200 when the square focal plane of the front zoom lens 310 coincides with the object-side focal plane of the rear zoom lens 320. In this embodiment, when the phase focal plane of the front zoom lens 310 coincides with the object focal plane of the rear zoom lens 320, the optical system is in a telephoto state, and the distance between the front zoom lens 310 and the rear zoom lens 320 is the largest, and at this time, if the front zoom lens 310 is very close to the collimator lens array 200, the length of the whole optical system can be reduced, so that the length and size of the optical system are reduced, and the volume of the lamp is smaller.

In one embodiment, as shown in fig. 6, the collimating lens array 200 may be a fly-eye lens. Specifically, the collimating lens array 200 may include a front collimating lens array and a rear collimating lens array, in this case, the collimating lens group 230 includes a front collimating lens 231 and a rear collimating lens 232, both the front collimating lens array and the rear collimating lens array may be fly-eye lenses, or one of the collimating lens arrays may be a fly-eye lens, and the other is a single lens array. The collimating lens array is collimated by the fly-eye lens, so that the installation can be simplified, the installation of the collimating lens array can be completed by installing one fly-eye lens, and the installation process is very convenient and simple.

In another embodiment, the collimating lens array 200 may include a plurality of fly-eye lenses. When the rated power of the lamp is larger, the number of the light sources 110 is larger, the area of the light source array 100 is also larger, so that the breadth of the collimating lens array 200 is also larger, in this case, if one fly-eye lens is used as the collimating lens array 200, the area of the fly-eye lens should be larger, so that the fly-eye lens is not easy to process. In the present embodiment, the collimating lens array 200 is formed by combining a plurality of fly-eye lenses, so that not only the area of a single fly-eye lens can be reduced, but also the mounting process can be simplified.

In another embodiment, as shown in fig. 7, the collimating lens array 200 may be an array formed by a single lens.

The specific structure of the collimating lens array 200 can be selected by those skilled in the art according to actual needs, and the present application is not limited in particular.

In the embodiment of the present application, as shown in fig. 8 and 9, the light emitting surface of each light source 110 may be rectangular, and an extension line of a center line of the light emitting surface of each light source 110 intersects with the axis line of the light source array 100. Since the light emitting chip of the high power light source 110 is generally rectangular, and the light emitting surface thereof is also rectangular, in order to form a circular surface light source by the plurality of light sources 110, it is necessary to rotate the angle of the light sources 110, so that the extension line of the center line of the light emitting surface of each light source 110 intersects with the axis line of the light source array 100, it can be understood that each light source 110 may be distributed symmetrically with respect to the center of the axis of the light source array 100, or the light sources 110 form an axial symmetry similar to an orthogonal axis, otherwise, the light spot passing through the zoom system is rectangular similar to the shape of the light source 110.

Optionally, the shape of each lens, the front zoom lens and the rear zoom lens in the collimating lens array 200 is circular, and since the lenses used in the present application are all circular and symmetrical about the geometric center, the optical performance of the luminaire is not affected no matter the light source 110 rotates, and the light source 110 is mounted on the bracket 120 in fig. 9.

It should be understood that the above description is only for the purpose of helping those skilled in the art better understand the embodiments of the present application, and is not intended to limit the scope of the embodiments of the present application. Various equivalent modifications or changes, or combinations of any two or more of the above, may be apparent to those skilled in the art in light of the above examples given. Such modifications, variations, or combinations are also within the scope of the embodiments of the present application.

It should also be understood that the foregoing descriptions of the embodiments of the present application focus on highlighting differences between the various embodiments, and that the same or similar elements that are not mentioned may be referred to one another and, for brevity, are not repeated herein.

It should also be understood that the manner, the case, the category, and the division of the embodiments are only for convenience of description and should not be construed as a particular limitation, and features in various manners, the category, the case, and the embodiments may be combined without contradiction.

It is also to be understood that the terminology and/or the description of the various embodiments herein is consistent and mutually inconsistent if no specific statement or logic conflicts exists, and that the technical features of the various embodiments may be combined to form new embodiments based on their inherent logical relationships.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and all the changes or substitutions should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. The lamp is characterized by comprising a light source array (100), wherein a collimating lens array (200), a front zoom lens (310) and a rear zoom lens (320) are sequentially arranged on a light outgoing path of the light source array (100);

the light source array (100) comprises a plurality of light sources (110), the collimating lens array (200) comprises a plurality of collimating lens groups (230) distributed on the same plane, the distribution plane of each collimating lens group (230) is perpendicular to the light emergent light path, and each light source (110) corresponds to each collimating lens group (230) one by one;

the position of the front zoom lens (310) is reciprocally adjustable along the light exit path with respect to the light source array (100).

2. A light fixture as claimed in claim 1, characterized in that the front zoom lens (310) is structurally identical to the rear zoom lens (320).

3. A light fixture as claimed in claim 2, characterized in that the front zoom lens (310) and the rear zoom lens (320) are symmetrically arranged with respect to a first line: a perpendicular bisector of a line connecting the centers of the front zoom lens (310) and the rear zoom lens (320).

4. A light fixture as claimed in claim 2, characterized in that the front and rear zoom lenses (310, 320) are biconvex spherical mirrors, the curvatures of the two spherical surfaces of which are different.

5. A luminaire as claimed in claim 4, characterized in that the front zoom lens (310) has a spherical surface with a large curvature facing the collimating lens array (200) and a spherical surface with a small curvature facing away from the collimating lens array (200).

6. A light fixture as claimed in claim 4, characterized in that the ratio of the radius of curvature of the sphere of small curvature of the front zoom lens (310) to the radius of curvature of the sphere of large curvature is in the range of 2.5-3.5.

7. A lamp as claimed in claim 1, wherein the collimating lens group (230) comprises a front collimating lens (231) and a rear collimating lens (232) arranged in sequence along the light exit path.

8. A light fixture as claimed in any one of claims 1 to 7, characterized in that the phase focal plane of the front zoom lens (310) coincides with the object focal plane of the rear zoom lens (320) when the distance of the front zoom lens (310) from the collimator lens array (200) is smaller than a preset distance.

9. A light fixture as claimed in any one of claims 1 to 7, characterized in that the position of the rear zoom lens (320) is fixed with respect to the light source array (100);

when the front zoom lens (310) is adjusted in a direction away from the light source array (100), the light exit angle of the light emitted from the rear zoom lens (320) increases.

10. A lamp as claimed in any one of claims 1 to 7 wherein the light emitting surface of each light source (110) is rectangular and an extension of the centerline of the light emitting surface of each light source (110) intersects the axis of the light source array (100).

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