Photographic lamp light source

Abstract

The utility model relates to a photographic lamp light source which comprises a substrate and a plurality of light-emitting units. The light-emitting units are distributed on the substrate in a rectangular array mode, and each light-emitting unit comprises more than two light-emitting light sources with different colors. The light-emitting units are arranged in multiple columns in the transverse direction and arranged in multiple rows in the longitudinal direction. All the light-emitting units in the same row sequentially rotate by a first angle in the first direction, all the light-emitting units in the same column sequentially rotate by a second angle in the second direction, and the first angle is not equal to the second angle. The photographic lamp light source is high in uniformity, the color in the whole lighting area is more uniform and softer, the light mixing effect is better, and the requirement for the photographic light source can be met.

Description

Technical Field

[0001] This utility model relates to the field of lighting equipment technology, and in particular to a photographic light source. Background Technology

[0002] In indoor studios, live broadcast rooms, or photo studios, LED flat panel lights are often used as camera light sources. These lights typically have multiple LED beads arranged in an array on their luminous surface. Existing LED beads often contain multiple color chips, such as red, green, and blue.

[0003] Because the different colored chips are positioned differently on an LED, the color of light emitted by a single LED is uneven. When a large number of LEDs are arranged in the same order, this unevenness in the camera light source becomes even more pronounced; for example, some areas may appear bluish while others appear reddish.

[0004] Because photographic lights require a high degree of uniformity in light, improving the uniformity of light from LED photographic light sources is an urgent problem that needs to be solved in this industry. Utility Model Content

[0005] One objective of this invention is to address the shortcomings of existing technologies and provide a photographic light source. To solve the aforementioned technical problems, this invention adopts the following technical solution:

[0006] A photographic light source, comprising:

[0007] substrate;

[0008] Multiple light-emitting units are arranged in a rectangular array on the substrate, and each light-emitting unit includes two or more different colors of light-emitting light sources;

[0009] Multiple light-emitting units are arranged in multiple columns along the horizontal direction and multiple rows along the vertical direction. All light-emitting units in the same row are rotated sequentially by a first angle along a first direction, and all light-emitting units in the same column are rotated sequentially by a second angle along a second direction. The first angle and the second angle are not equal.

[0010] In one embodiment, the first angle and the second angle differ by more than 10°.

[0011] In one embodiment, the first direction is the same as or opposite to the second direction.

[0012] In one embodiment, the centers of all light-emitting units in the same row and / or the same column are located on the same straight line.

[0013] In one embodiment, among all light-emitting units in the same row and / or the same column, the centers of any two adjacent light-emitting units are not on the same straight line;

[0014] The centers of all light-emitting units in odd-numbered positions in the same row and / or the same column are on a first straight line, and the centers of all light-emitting units in even-numbered positions in the same row and / or the same column are on a second straight line. The first and second straight lines are parallel to each other and are spaced apart by a first distance.

[0015] In one embodiment, the distance between any two adjacent light-emitting units in each row and / or each column is a second distance, which is greater than the first distance.

[0016] In one embodiment, the second distance is greater than twice the first distance.

[0017] In one embodiment, the second distance in each row is greater than the first distance in each column; and or,

[0018] The second distance in each column is greater than the first distance in each row.

[0019] In one embodiment, the light source for photography also includes multiple warm and cool light units, each of which includes at least one cold light source and at least one warm light source, and each warm and cool light unit is arranged between any two adjacent light-emitting units.

[0020] In one embodiment, the cold light source and the warm light source are alternately arranged in any two adjacent cold and warm light units.

[0021] In one embodiment, all warm and cool light units in the same row are rotated sequentially by a predetermined angle along a first direction or a second direction; and / or,

[0022] All the warm and cool light units in the same column rotate sequentially by a predetermined angle along the first or second direction.

[0023] As can be seen from the above technical solution, this utility model has at least the following advantages and positive effects:

[0024] This invention includes a substrate and multiple light-emitting units. The light-emitting units are arranged in multiple columns horizontally and multiple rows vertically. All light-emitting units in the same row are rotated sequentially along a first direction by a first angle, and all light-emitting units in the same column are rotated sequentially along a second direction by a second angle. The first and second angles are not equal. This arrangement effectively avoids the light-emitting units on the diagonal of the substrate having the same arrangement angle, preventing the generation of strip-shaped light spots caused by consistent arrangement angles, thereby improving the uniformity of illumination from the photographic lighting source.

[0025] By employing the aforementioned rotational arrangement, the emission angle distribution of light emitted by each light-emitting unit on the substrate can be altered, resulting in better mixing of the light energy emitted by each unit. This effectively prevents adjacent or nearby light-emitting units from being arranged at the same angle on the substrate, reducing the generation of light spots caused by units oriented in the same direction. Therefore, the photographic light source of this invention exhibits high uniformity, meeting the requirements for photographic light sources.

[0026] Furthermore, each light-emitting unit includes two or more different colors of light sources. Therefore, by arranging multiple light-emitting units in the above-mentioned rotating manner, different colors of light can be more fully intertwined and mixed, making the colors in the entire lighting area more uniform and softer, and achieving a better optical color mixing effect. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of a photographic light source according to one embodiment.

[0028] Figure 2 yes Figure 1 The diagram shows the arrangement of multiple light-emitting units in the photographic light source.

[0029] Figure 3 This is a schematic diagram of the structure of a photographic light source according to another embodiment.

[0030] Figure 4 yes Figure 3 The diagram shows the arrangement of multiple light-emitting units in the photographic light source.

[0031] The annotations in the attached figures are explained as follows:

[0032] 100 - Substrate; 110 - First straight line; 120 - Second straight line;

[0033] 200-Light-emitting unit;

[0034] 300 - Cool and warm light unit; 310 - Cool light source; 320 - Warm light source. Detailed Implementation

[0035] Typical embodiments embodying the features and advantages of this utility model will be described in detail in the following description. It should be understood that this utility model can have various variations in different embodiments, all of which do not depart from the scope of this utility model, and the descriptions and illustrations therein are for illustrative purposes only and not intended to limit this utility model.

[0036] In the description of this application, it should be understood that, in the embodiments shown in the accompanying drawings, the indications of direction or positional relationships (such as up, down, left, right, front, and back) are merely for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. These descriptions are appropriate when these elements are in the positions shown in the accompanying drawings. If the description of the positions of these elements changes, these directional indications also change accordingly.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0038] Please see Figure 1 As shown, the photographic light source according to an embodiment of the present invention includes a substrate 100, a plurality of light-emitting units 200, and a plurality of warm and cool light units 300. The substrate 100 can be a rectangular plate. It is understood that in other embodiments, the substrate 100 may also have other shapes, such as circular, polygonal, elliptical, etc.

[0039] Multiple light-emitting units 200 are arranged in a rectangular array on the substrate 100. Specifically, such as... Figure 1 As shown, multiple light-emitting units 200 can be arranged in multiple columns along the horizontal direction and multiple rows along the vertical direction. This arrangement allows the multiple light-emitting units 200 to present a regular and uniform distribution on the substrate 100, thereby improving the light emission uniformity of the photographic lamp light source.

[0040] Each light-emitting unit 200 includes two or more light sources of different colors. Specifically, the different colors of light sources can be red, green, blue, amber, cyan, and lemon-yellow light sources, etc. For example, each light-emitting unit 200 may include one red light source and one green light source. Alternatively, each light-emitting unit 200 may include one red light source, one green light source, and one blue light source arranged in a triangular or L-shaped configuration. Or, each light-emitting unit 200 may include one red light source and two blue light sources arranged in a triangular or L-shaped configuration.

[0041] The red light source can be a red light-emitting chip that emits red light when powered on. Alternatively, the red light source can also be a light source device that emits red light by combining a non-red light-emitting chip with a corresponding phosphor. Other color light sources can be emitted using a single-color chip, a single chip combined with a corresponding phosphor, or a combination of multiple chips; the specific configuration can be determined as needed.

[0042] All light sources in each light-emitting unit 200 can be uniformly encapsulated by a bracket. Alternatively, each light source in each light-emitting unit 200 can have its own independent housing, depending on actual needs.

[0043] In this invention, each light-emitting unit 200 includes two or more light sources of different colors. In addition, the uniform arrangement of multiple light-emitting units 200 on the substrate 100 allows the light of different colors in any two adjacent light-emitting units 200 to better interweave and blend with each other, thereby improving the light mixing effect of the photographic light source and improving the light emission uniformity of the photographic light source.

[0044] like Figure 2 As shown, all light-emitting units 200 in the same row are rotated sequentially along the first direction by a first angle α, and all light-emitting units 200 in the same column are rotated sequentially along the second direction by a second angle β. The first angle α and the second angle β are not equal.

[0045] Specifically, see Figure 2 If the arrangement angle of the first light-emitting unit 200 in a certain row is A, then the arrangement angle of the second light-emitting unit 200 in the same row is A plus the first angle α, the arrangement angle of the third light-emitting unit 200 is the arrangement angle of the second light-emitting unit 200 plus the first angle α, that is, A plus twice the first angle α, and so on.

[0046] Assuming the arrangement angle of the first light-emitting unit 200 in a certain column is B, then the arrangement angle of the second light-emitting unit 200 in the same column is B plus the second angle β, the arrangement angle of the third light-emitting unit 200 is the arrangement angle of the second light-emitting unit 200 plus the second angle β, that is, B plus twice the first angle β, and so on.

[0047] The arrangement angle of each light-emitting unit 200 can refer to the angle between its mounting reference line and the longitudinal or transverse direction when the light-emitting unit 200 is mounted on the substrate 100. The mounting reference line of the light-emitting unit 200 can be a line connecting its center to the center of a certain mark. Alternatively, the mounting reference line of the light-emitting unit 200 can be a line connecting the centers of any two light sources in the light-emitting unit 200.

[0048] For example, such as Figure 2As shown, each light-emitting unit 200 has a square shape, and a mark is provided at one of its corners. The mounting reference line for each light-emitting unit 200 can be the line connecting the center of the light-emitting unit 200 to the center of the mark, i.e., straight line C. Therefore, the arrangement angle A of the first light-emitting unit 200 in the first row can be the angle between straight line C and the horizontal direction.

[0049] like Figure 2 As shown, the first light-emitting unit 200 in the first column and the first light-emitting unit 200 in the first row are the same light-emitting unit 200, then B = A. The arrangement angle A or B can be any angle between 0° and 360°, depending on the specific situation.

[0050] like Figure 2 As shown, the arrangement angle of the second light-emitting unit 200 in the first row is A plus the first angle α, the arrangement angle of the third light-emitting unit 200 in the first row is A plus twice the first angle α, and so on; the arrangement angle of the second light-emitting unit 200 in the first column is A plus the second angle β, the arrangement angle of the third light-emitting unit 200 in the first column is A plus twice the second angle β, and so on.

[0051] See Figure 2 In some embodiments, the first angle α and the second angle β differ by more than 10°. For example, the first angle α can be 45° and the second angle β can be 60°, with a difference of 15° between them.

[0052] See Figure 2 In some embodiments, the first direction is opposite to the second direction. For example, the first direction can be clockwise and the second direction can be counterclockwise.

[0053] For example, such as Figure 2 As shown, in one embodiment of this utility model, all light-emitting units 200 in the same row are rotated clockwise by 45° in sequence, and all light-emitting units 200 in the same column are rotated counterclockwise by 60° in sequence.

[0054] It should be noted that in other embodiments, the first angle α can also be other angles such as 15°, 25°, 30°, 50° or 60°, and the second angle β only needs to satisfy that the difference between it and the first angle α is greater than 10°. The specific setting can be made according to actual needs.

[0055] It should be noted that in other embodiments, the first direction and the second direction can be the same. That is, the first direction and the second direction can both be clockwise or both be counterclockwise.

[0056] In this invention, by rotating all light-emitting units 200 in the same row sequentially along the first direction by a first angle α, and rotating all light-emitting units 200 in the same column sequentially along the second direction by a second angle β, and making the first angle α and the second angle β unequal, it is possible to effectively avoid the light-emitting units 200 located on the diagonal of the substrate 100 having the same arrangement angle, and to avoid the generation of strip-shaped light spots caused by the same arrangement angle, thereby improving the illumination uniformity of the photographic lamp light source.

[0057] By rotating the light source as described above, the emission angle distribution of the light emitted by each light-emitting unit 200 on the substrate 100 can be changed, allowing the light energy emitted by each light-emitting unit 200 to mix better. This effectively avoids adjacent or close light-emitting units 200 being arranged at the same angle on the substrate 100, reducing the generation of light spots caused by light-emitting units 200 oriented in the same direction. Therefore, the photographic light source of this invention has high uniformity and can meet the requirements of photographic light sources.

[0058] Furthermore, since each light-emitting unit 200 includes two or more different colors of light sources, the above-mentioned rotating arrangement of multiple light-emitting units 200 allows different colors of light to interweave and mix more fully, making the colors in the entire lighting area more uniform and softer, and achieving a better optical color mixing effect.

[0059] See Figure 1 In some embodiments, the centers of all light-emitting units 200 in the same row can be located on the same straight line. And / or, the centers of all light-emitting units 200 in the same column can be located on the same straight line. This allows the multiple light-emitting units 200 to be distributed more regularly on the substrate 100, which is beneficial to improving the light emission uniformity of the photographic lamp light source.

[0060] See Figure 3 and Figure 4 In other embodiments, among all the light-emitting units 200 in the same row, the centers of any two adjacent light-emitting units 200 are not on the same straight line. For example, as shown... Figure 4 As shown, the centers of all light-emitting units 200 in the odd-numbered positions of the same row are on the first straight line 110, and the centers of all light-emitting units 200 in the even-numbered positions of the same row are on the second straight line 120. The first straight line 110 and the second straight line 120 are parallel to each other and separated by a first distance H.

[0061] For example, the first, third, and fifth light-emitting units 200 in the first row are all located on the first straight line 110, meaning their centers coincide with the first straight line 110. The second and fourth light-emitting units 200 in the first row are both located on the second straight line 120, meaning their centers coincide with the second straight line 120. Furthermore, from the perspective of the first row as a whole, the five light-emitting units 200 are distributed in a wavy pattern.

[0062] In this embodiment, all the light-emitting units 200 in the same row are arranged in a roughly wavy pattern, so that the multiple light-emitting units 200 can be more evenly and regularly dispersed on the substrate 100, which is beneficial to improving the light mixing effect of the multiple light-emitting units 200 and improving the illumination uniformity of the entire photographic light source.

[0063] See Figure 4 In one embodiment, the distance between any two adjacent light-emitting units 200 in each row is a second distance L. For example, the distance between the first light-emitting unit 200 and the second light-emitting unit 200 in the first row is the second distance L, which is greater than the first distance H between the aforementioned first straight line 110 and the second straight line 120. Optionally, the second distance L is greater than twice the first distance H.

[0064] In this embodiment, all light-emitting units 200 located in the same row are arranged in a wave shape. By setting the second distance L to be greater than the first distance H, the light from each light-emitting unit 200 in each row can be emitted outward more effectively, thereby improving the light intensity and uniformity of the photographic light source.

[0065] See Figure 4 In some embodiments, the centers of any two adjacent light-emitting units 200 in the same column are not on the same straight line. For example, the centers of all odd-numbered light-emitting units 200 in the same column are on the first straight line 110, and the centers of all even-numbered light-emitting units 200 in the same column are on the second straight line 120. The first straight line 110 and the second straight line 120 are parallel to each other and separated by a first distance. To facilitate differentiation from the first distance H between the first straight line 110 and the second straight line 120 in the same row, the first distance H1 between the first straight line 110 and the second straight line 120 in the same column is designated as H1.

[0066] In this embodiment, all the light-emitting units 200 in the same column are arranged in a roughly wavy pattern, so that the multiple light-emitting units 200 can be more evenly and regularly dispersed on the substrate 100, which is beneficial to improving the light mixing effect of the multiple light-emitting units 200 and improving the illumination uniformity of the entire photographic light source.

[0067] See Figure 4 Optionally, in each column, the distance between any two adjacent light-emitting units 200 is defined as the second distance. To distinguish it from the second distance L between any two adjacent light-emitting units 200 in each row, the second distance between any two adjacent light-emitting units 200 in each column is designated as L1. The second distance L1 is greater than the first distance H1. For example, the second distance L1 is greater than twice the first distance H1.

[0068] Since all the light-emitting units 200 in each column are arranged in a wave shape, and by setting the second distance L1 to be greater than the first distance H1, the light from each light-emitting unit 200 in each column can be emitted outward more effectively, which is beneficial to improving the light intensity and uniformity of the photographic light source.

[0069] See Figure 4 In some embodiments, the second distance in each row is greater than the first distance in each column. Specifically, the second distance L between any two adjacent light-emitting units 200 in each row is greater than the first distance H1 between the first straight line 110 and the second straight line 120 in each column. This arrangement allows the multiple light-emitting units 200 on the substrate 100 to be staggered in both the longitudinal and transverse directions, avoiding phenomena such as the centers of the second light-emitting unit 200 in the first row and the second light-emitting unit 200 in the first column being located on the same straight line in the longitudinal direction. This improves illumination uniformity and enhances the light mixing effect.

[0070] See Figure 4 In some embodiments, the second distance in each column is greater than the first distance in each row. Specifically, the second distance L1 between any two adjacent light-emitting units 200 in each column is greater than the first distance H between the first straight line 110 and the second straight line 120 in each row. By setting it in this way, the multiple light-emitting units 200 on the substrate 100 can be arranged in an alternating manner in the longitudinal and transverse directions, which helps to improve the uniformity of illumination and enhance the light mixing effect.

[0071] See Figure 1 In this embodiment of the invention, an installation interval is provided between any two adjacent light-emitting units 200. Each warm and cool light unit 300 is respectively arranged in the installation interval between any two adjacent light-emitting units 200. In this embodiment, by arranging multiple warm and cool light units 300 on the substrate 100, the light emitted by the multiple warm and cool light units 300 can be superimposed with the light emitted by the multiple light-emitting units 200, thereby effectively improving the light mixing effect and improving the uniformity of the light emission color of the photographic light source.

[0072] Each of the cold and warm light units 300 may include at least one cold light source 310 and at least one warm light source 320. It is worth noting that the cold light source 310 may be a light source capable of emitting cold light, such as cyan light, with a wavelength range of 485nm to 515nm. The warm light source 320 may be a light source capable of emitting warm light, such as amber light, with a wavelength range of 580nm to 600nm.

[0073] For example, such as Figure 1 As shown, each cool and warm light unit 300 may include a cool light source 310 and a warm light source 320. The cool light source 310 and the warm light source 320 may be arranged side by side in the transverse direction.

[0074] See Figure 1 In some embodiments, the cold light source 310 and the warm light source 320 in any two adjacent cold and warm light units 300 are alternately arranged. By alternating the cold light source 310 and the warm light source 320 in two adjacent cold and warm light units 300, the light from the cold light source 310 and the warm light source 320 in the two adjacent cold and warm light units 300 can be better interwoven and blended, thereby improving the light mixing effect.

[0075] See Figure 1 In some embodiments, all warm and cool light units 300 in the same row are rotated sequentially by a predetermined angle along a first direction or a second direction. For example, as Figure 1 As shown in the example, all the warm and cool light units 300 in the same row can be rotated 90° clockwise in sequence.

[0076] And / or, in one embodiment, all warm and cool light units 300 in the same column are rotated sequentially by a predetermined angle along a first direction or a second direction. For example, such as Figure 1 As shown in the example, all the warm and cool light units 300 in the same column can be rotated 45° counterclockwise in sequence.

[0077] By rotating multiple warm and cool light units 300 in different directions and at different angles, the light energy emitted by each warm and cool light unit 300 can be better mixed, thereby better mixing with the light emitted by each light-emitting unit 200 on the substrate 100, thus improving the illumination uniformity of the photographic lamp light source.

[0078] It should be noted that, in other embodiments, the angle and direction of sequential rotation of all warm and cool light units 300 in the same row can be the same as the angle and direction of sequential rotation of all warm and cool light units 300 in the same column.

[0079] See Figure 4 In other embodiments, each of the warm and cool light units 300 may be mounted on the substrate 100 at the same arrangement angle.

[0080] In this invention, by arranging different warm and cool light units 300, the uniformity of the light emission of the photographic light source is ensured while expanding the diversity of the layout design of the photographic light source.

[0081] The photographic light source of this embodiment includes a substrate, multiple light-emitting units, and multiple warm and cool light units. The multiple light-emitting units are arranged in multiple columns horizontally and multiple rows vertically. All light-emitting units in the same row are rotated sequentially along a first direction by a first angle, and all light-emitting units in the same column are rotated sequentially along a second direction by a second angle. The first angle and the second angle are not equal. This arrangement effectively avoids the light-emitting units on opposite diagonals of the substrate having the same arrangement angle, preventing the generation of strip-shaped light spots caused by consistent arrangement angles, thereby improving the illumination uniformity of the photographic light source.

[0082] By employing the aforementioned rotational arrangement, the emission angle distribution of light emitted by each light-emitting unit on the substrate can be altered, resulting in better mixing of the light energy emitted by each unit. This effectively prevents adjacent or nearby light-emitting units from being arranged at the same angle on the substrate, reducing the generation of light spots caused by units oriented in the same direction. Therefore, the photographic light source of this invention exhibits high uniformity, meeting the requirements for photographic light sources.

[0083] Furthermore, each light-emitting unit includes two or more different colors of light sources. Therefore, by arranging multiple light-emitting units in the above-mentioned rotating manner, different colors of light can be more fully intertwined and mixed, making the colors in the entire lighting area more uniform and softer, and achieving a better optical color mixing effect.

[0084] In addition, by arranging multiple warm and cool light units on the substrate, the light emitted by the multiple warm and cool light units can be superimposed with the light emitted by the multiple light-emitting units, thereby effectively improving the light mixing effect and improving the uniformity of the light emission color of the photographic light source.

[0085] The above embodiments are merely illustrative examples of structures. The structures in each embodiment are not fixed combinations. In the absence of structural conflicts, the structures in multiple embodiments can be arbitrarily combined and used.

[0086] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terminology used is descriptive and exemplary, and not restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A photographic light source, characterized in that, include: substrate; Multiple light-emitting units are arranged in a rectangular array on the substrate. Each light-emitting unit includes two or more light-emitting light sources of different colors. The multiple light-emitting units are arranged in multiple columns along the horizontal direction and multiple rows along the vertical direction. All light-emitting units in the same row are rotated sequentially by a first angle along a first direction, and all light-emitting units in the same column are rotated sequentially by a second angle along a second direction. The first angle and the second angle are not equal.

2. The photographic light source according to claim 1, characterized in that, The difference between the first angle and the second angle is more than 10°.

3. The photographic light source according to claim 1, characterized in that, The first direction is the same as or opposite to the second direction.

4. The photographic light source according to claim 1, characterized in that, The centers of all the light-emitting units in the same row and / or the same column are located on the same straight line.

5. The photographic light source according to claim 1, characterized in that, In all the light-emitting units in the same row and / or the same column, the centers of any two adjacent light-emitting units are not on the same straight line; The centers of all the light-emitting units in the same row and / or the same column that are odd-numbered are on a first straight line, and the centers of all the light-emitting units in the same row and / or the same column that are even-numbered are on a second straight line. The first straight line and the second straight line are parallel to each other and are spaced apart by a first distance.

6. The photographic light source according to claim 5, characterized in that, In each row and / or each column, the distance between any two adjacent light-emitting units is a second distance, which is greater than the first distance.

7. The photographic light source according to claim 6, characterized in that, The second distance is greater than twice the first distance.

8. The photographic light source according to claim 6, characterized in that, The second distance in each row is greater than the first distance in each column; and or, The second distance in each column is greater than the first distance in each row.

9. The photographic light source according to any one of claims 1 to 8, characterized in that, It also includes multiple cold and warm light units, each of which includes at least one cold light source and at least one warm light source, and each of the cold and warm light units is arranged between any two adjacent light-emitting units.

10. The photographic light source according to claim 9, characterized in that, The cold light source and the warm light source are alternately arranged in any two adjacent cold and warm light units.

11. The photographic light source according to claim 9, characterized in that, All the warm and cool light units in the same row are rotated sequentially by a predetermined angle along the first direction or the second direction; and / or, All the warm and cool light units in the same column are rotated sequentially by a predetermined angle along the first direction or the second direction.

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