Remote irradiation LED light source deviation rectifying device and light emitting system

Abstract

The utility model provides a remote irradiation LED light source deviation rectifying device and a light emitting system, and the remote irradiation LED light source deviation rectifying device comprises a light source device and an angle adjusting lens; the light source device comprises an LED light-emitting chip array and a collimating lens array, the LED light-emitting chip array comprises a plurality of LED light-emitting chips, the collimating lens array comprises a plurality of collimating lenses, each collimating lens corresponds to each LED light-emitting chip, and the collimating lenses are used for collecting light emitted by the corresponding LED light-emitting chips and emitting collimated light; the converging lens is used for receiving the collimated light emitted from the collimating lens array to form a converged light spot; the angle adjusting lens has a converging effect on incident parallel light, and the angle adjusting lens is arranged near the focal plane of the converging lens and receives light emitted by the converging lens; and along the main optical axis, the distance between the light emitting surface of the converging lens and the light incident surface of the angle adjusting lens is less than or equal to 1.5 times of the focal length of the converging lens. According to the scheme, the deflection angle of the light can be corrected, and the quality of formed light spots is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of remote lighting LED lamps, and particularly relates to a remote irradiation LED light source deviation rectifying device and a light emitting system. BACKGROUND

[0002] In the field of remote lighting, such as searchlights, ship lights, stage lights and the like, it is desirable to achieve remote and uniform light emitting effects. Taking stage lighting as an example, stage lighting is an indispensable part of live performances such as drama, concert, dance and singing concert, and stage lights are used to provide various, colorful and dynamic light presentations, and different stage light designs can be made according to the artistic effects and live situations of the live performances.

[0003] Specifically, the principle of achieving stage light effects in a stage lighting scene is to use a light source device to form a light spot, and based on the formed light spot, stage light can be further displayed. For example, according to the stage light requirements, some hollow patterns such as circles and stars can be arranged near the light spot. When the hollow patterns are illuminated by the light spot, a projection lens is used to form an image of the patterns to a distance, so that the stage light effect is formed. That is, the display effect of the stage light is usually affected by the quality of the light spot.

[0004] In the field of stage lighting, an array light source is used to converge to form a light spot, and there is a relatively mature scheme. However, in actual application, due to the influence of factors such as environment and air disturbance, the edge of the light spot is blurred, and the display effect is poor. CONTENT OF THE INVENTION

[0005] The present application provides a remote irradiation LED light source deviation rectifying device and a light emitting system to improve the quality of the light spot.

[0006] In a first aspect, the present application provides a remote irradiation LED light source deviation rectifying device, comprising: a light source device and an angle adjusting lens; the light source device comprises: an LED light emitting chip array, a collimating lens array and a converging lens; the LED light emitting chip array comprises a plurality of LED light emitting chips, and the collimating lens array comprises a plurality of collimating lenses, each collimating lens corresponding to each LED light emitting chip, and the collimating lens being used to collect light emitted by the corresponding LED light emitting chip and emit collimated light; the converging lens is used to receive the collimated light emitted from the collimating lens array to form a converging light spot; the angle adjusting lens has a converging effect on incident parallel light, and the angle adjusting lens is arranged near the focal plane of the converging lens and receives light emitted by the converging lens; wherein, along the main optical axis, the distance between the light emitting surface of the converging lens and the light entering surface of the angle adjusting lens is less than or equal to 1.5 times the focal length of the converging lens.

[0007] In some examples, along the main optical axis, the distance from the light exit surface of the angle adjustment lens to the converging spot at the rear end of the light path of the angle adjustment lens is less than or equal to the distance between the light exit surface of the converging lens and the light entrance surface of the angle adjustment lens.

[0008] In some examples, the focal length of the angle adjustment lens is less than or equal to 1.5 times the focal length of the converging lens and greater than or equal to half the focal length of the converging lens.

[0009] In some examples, the angle adjustment lens and / or the converging lens is a Fresnel lens.

[0010] In some examples, the system further comprises: an ommatidium lens group comprising a first ommatidium lens and a second ommatidium lens arranged in sequence along the light path between the collimating lens array and the converging lens, the first ommatidium lens comprising a plurality of first convex lenses arranged closely to each other, and the second ommatidium lens comprising a plurality of second convex lenses arranged closely to each other.

[0011] In some examples, the system further comprises: a light homogenizing device located between the converging lens and the angle adjustment lens; and / or, a light homogenizing structure located between the collimating lens array and the converging lens.

[0012] In some examples, the LED light emitting chip comprises at least two sub-chips, and the light emitting colors of the at least two sub-chips are different. Optionally, in the array of LED light emitting chips, the placement orientations of the sub-chips with the same light emitting color in each of the at least two light emitting chips are different.

[0013] In some examples, in the same light emitting chip, the number of sub-chips is four, and the four sub-chips are arranged in a cross shape.

[0014] In some examples, the system comprises: a first array of LED light emitting chips and a corresponding array of collimating lenses, and a second array of LED light emitting chips and a corresponding array of collimating lenses; the light emitting colors of the first array of LED light emitting chips and the second array of LED light emitting chips are different; and further comprises a light splitting filter capable of transmitting light emitted by the first array of LED light emitting chips and reflecting light emitted by the second array of LED light emitting chips, the light emitted by the first array of LED light emitting chips is collected by the corresponding array of collimating lenses, exits and is transmitted by the light splitting filter to form first exit light, and the light emitted by the second array of LED light emitting chips is collected by the corresponding array of collimating lenses, exits and is reflected by the light splitting filter to form second exit light, and the first exit light and the second exit light are combined into one bundle and then incident on the converging lens.

[0015] In a second aspect, the embodiment of the present application provides a light emitting system, comprising the remote irradiation LED light source deviation rectifying device according to any one of the preceding examples, and a pattern diaphragm located near the angle adjusting lens, the pattern diaphragm comprising a light transmission area with a pattern; the light emitting system further comprises a projection lens, the projection lens being located at the rear end of the light path of the pattern diaphragm, and the projection lens being used for projecting the pattern of the light transmission area of the pattern diaphragm to a far field.

[0016] The technical scheme of the embodiment of the present application comprises a light source device and an angle adjusting lens, wherein the light source device comprises a collimating lens and a converging lens, the collimated light emitted by the collimating lens is focused by the converging lens to form a converging light spot, according to the focal length of the converging lens, the angle adjusting lens is arranged near the focal plane of the converging lens, the angle adjusting lens has a converging effect, the angle adjusting lens at the specific position receives the light emitted by the light source device and can rectify the overall deflection angle, thereby solving the problem of deflection of the edge light beam angle and improving the quality of the formed light spot. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings, which are incorporated into and form a part of the specification, illustrate one embodiment consistent with the present application and, together with the description, serve to explain the principles of the application.

[0018] Figure 1 A structure schematic diagram of a remote irradiation LED light source deviation rectifying device provided by the embodiment of the present application is shown in the figure.

[0019] Figure 2 A structure schematic diagram of an LED light emitting chip provided by the embodiment of the present application is shown in the figure.

[0020] Figure 3 A structure schematic diagram of another LED light emitting chip array provided by the embodiment of the present application is shown in the figure.

[0021] Figure 4 A structure schematic diagram of another LED light emitting chip array provided by the embodiment of the present application is shown in the figure.

[0022] Figure 5 A structure schematic diagram of another remote irradiation LED light source deviation rectifying device provided by the embodiment of the present application is shown in the figure.

[0023] Figure 6 A structure schematic diagram of another remote irradiation LED light source deviation rectifying device provided by the embodiment of the present application is shown in the figure.

[0024] Figure 7 A structure schematic diagram of another remote irradiation LED light source deviation rectifying device provided by the embodiment of the present application is shown in the figure.

[0025] Figure 8 A structure schematic diagram of another remote irradiation LED light source deviation rectifying device provided by the embodiment of the present application is shown in the figure.

[0026] Figure 9 This is a schematic diagram of the structure of a light-emitting system provided in an embodiment of this application.

[0027] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0028] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0029] In stage lighting scenarios, the principle behind achieving stage lighting effects is to use a light source to form a light spot. A rotatable, perforated disc can then be placed near this light spot. This disc can have perforated shapes, such as circles or five-pointed stars, designed to meet the stage lighting requirements. When a perforated shape enters the light path of the light spot, that shape is illuminated. Simultaneously, a projection lens projects this shape onto a distant image, thus creating the stage lighting effect. In other words, the display effect of stage lighting is typically influenced by the quality of the light spot.

[0030] Therefore, improving the quality of the light spot is an important means to enhance the effect of stage lighting and a key factor affecting the performance of stage lighting fixtures. In system design, the convergence angle of the edge beam is theoretically determined by the range of the light spot incident on the surface of the converging lens and the focal length of the lens. However, in practical applications, factors such as environmental and air disturbances can cause the edge beam of the light spot to deviate at an angle, resulting in blurred edges and poor display effects.

[0031] To address the aforementioned issues, this application provides a remote illumination LED light source correction device. In this embodiment, for the light spot formed by the collimating beam focused by the light source device, an angle adjustment device is set near the focal plane of the converging lens to correct the light beam deviation.

[0032] Example 1

[0033] Figure 1 This is a schematic diagram of a remote illumination LED light source correction device provided in an embodiment of this application, as shown below. Figure 1 As shown, it includes a light source device and an angle-adjusting lens 5;

[0034] The light source device comprises: an LED light emitting chip array, a collimating lens array 11 and 12, and a converging lens 4; the LED light emitting chip array comprises a plurality of LED light emitting chips, the collimating lens array comprises a plurality of collimating lenses, each collimating lens corresponds to each LED light emitting chip, the collimating lenses 11 and 12 are used to collect light emitted by the corresponding LED light emitting chip and emit collimated light; the converging lens 4 is used to receive light emitted from the collimating lens array and form a converging light spot.

[0035] The angle adjusting lens 5 is arranged on the light emitting side of the converging lens 4 and receives light emitted by the converging lens 4; wherein, along the main optical axis, the distance L between the light emitting surface of the converging lens 4 and the light entering surface of the angle adjusting lens 5 is less than or equal to 1.5 times the focal length F1 of the converging lens 4.

[0036] In the field of stage lighting, considering the uniformity of light display, the LED light emitting chip array comprises a plurality of LED light emitting chips, and the plurality of LED light emitting chips emit light together. For example, 10 LED light emitting chips with a light emitting size of 1mm can be placed. Correspondingly, the collimating lens array 11 and 12 comprises a plurality of collimating lenses. Each collimating lens corresponds to each LED light emitting chip, and the collimating lens collects light emitted by the corresponding LED light emitting chip and emits collimated light. The collimated light referred to herein refers to parallel light as close to collimated direction as possible, that is, the structure and position of the collimating lens are designed based on the design requirement of emitting collimated light, and the light emitted by the collimating lens based on such design can be regarded as the collimated light referred to herein. The converging lens 4 is arranged on the rear end of the light path of the collimating lens array, and the converging lens 4 receives collimated light emitted from the collimating lens array to form a light spot.

[0037] Specifically, the convergence angle of the edge light beams is theoretically determined by the spot range incident on the surface of the converging lens and the focal length of the converging lens. However, the present embodiment finds that in actual application, the up and down deflection of the edge light beams introduces an additional deflection angle that cannot be ignored in value, and the superposition of the light beam angle and the additional deflection angle produces a very large angle of light, which causes a large degree of deflection of the desired light divergence angle in system design. This additional deflection angle causes great difficulty in system design, energy dispersion, and reduction of spot brightness. To this end, in the scheme of the present embodiment, an angle adjusting lens 5 is arranged near the focal plane of the converging lens 4. Specifically, the distance L between the converging lens 4 and the angle adjusting lens 5 is less than or equal to 1.5 times the focal length of the converging lens 4. The angle adjusting lens 5 has a converging effect on the incident parallel light. By arranging the angle adjusting lens 5 at this range position, the divergence angle of the incident light beam itself is not greatly affected, but the overall deflection angle of the incident light beam is corrected. For example, in the incident light beam from the converging lens, the overall downward correction is made for the upward deflection of the edge angle light beam incident on the angle adjusting lens, and the overall upward correction is made for the downward deflection of the edge angle light beam incident on the angle adjusting lens. Finally, the angle of the light emitted from the angle adjusting lens is reduced to achieve the divergence angle of the incident light beam itself. That is, the present scheme sets the angle adjusting lens in the vicinity of the focal plane of the converging lens, which basically does not affect the size of the spot formed on the focal plane, does not need to adjust other optical devices in the system design, and can reduce the angle of the light emitted from the spot, thereby solving the problem of deflection of the edge light beam angle and effectively improving the spot quality.

[0038] Specifically, the light source device of the present embodiment includes an LED light emitting chip array, which includes a plurality of LED light emitting chips. In one example, the plurality of LED light emitting chips can be arranged in a circular array to improve the uniformity of light emission.

[0039] For example, the LED light emitting chip can include at least one sub-chip. For example, in the same LED light emitting chip, the number of sub-chips can be set to one, or the number of sub-chips can be set to multiple. Preferably, the light emitting colors of the multiple sub-chips can be different.

[0040] For example, considering the need for stage light color, the number of sub-chips can be set to three, and the three sub-chips can include a red sub-chip, a green sub-chip, and a blue sub-chip. Among them, the red sub-chip can emit red light, the green sub-chip can emit green light, and the blue sub-chip can emit blue light.

[0041] Each LED light emitting chip can include one red sub-chip, one green sub-chip and one blue sub-chip, and the LED light emitting chip can combine the red light from the red sub-chip, the green light from the green sub-chip and the blue light from the blue sub-chip to form a combined light beam.

[0042] Alternatively, the number of sub-chips can be set to four, and the four sub-chips can include a red sub-chip, a green sub-chip, a blue sub-chip and a white sub-chip. Among them, the red sub-chip can emit red light, the green sub-chip can emit green light, the blue sub-chip can emit blue light, and the white sub-chip can emit white light.

[0043] It is easy to understand that by adjusting the light emission timing and light emission brightness of each sub-chip in the same LED light emitting chip, the color of the combined light beam emitted by the LED light emitting chip can be changed, so that the LED light emitting chip can emit light of different colors, thereby improving the effect of stage lighting.

[0044] For example, the LED light emitting chip can be selected from one or more of inorganic light emitting diode (Light Emitting Diode, LED for short), mini light emitting diode (Mini Light Emitting Diode, Mini LED for short) and micro light emitting diode (Micro Light Emitting Diode, Micro LED for short).

[0045] In some possible embodiments, in the same LED light emitting chip, the orientations of the sub-chips can be the same or approximately the same, so that the light emission directions of the sub-chips are the same or approximately the same.

[0046] For example, the LED light emitting chip can have a light emitting surface, which can be used to refer to the light emitting area of the LED light emitting chip. The light emitting surface of the LED light emitting chip can be arranged vertically to the thickness direction of the LED light emitting chip, for example, when the light emitting surface of the LED light emitting chip can be arranged as a plane perpendicular to the thickness direction of the LED light emitting chip.

[0047] The size of the light emitting surface of the LED light emitting chip can be determined according to the overall light emitting area of the LED light emitting chip. For example, when the LED light emitting chip includes a plurality of sub-chips, there can be a gap between the plurality of sub-chips, so that the light emitting area of the LED light emitting chip is generally larger than the sum of the light emitting areas of the plurality of sub-chips, then the light emitting surface of the LED light emitting chip needs to be determined according to the overall light emitting area of the LED light emitting chip.

[0048] The shape of the light emitting surface of the LED light emitting chip can be determined according to the arrangement of the plurality of sub-chips, or the shape of the light emitting surface of the LED light emitting chip can be determined according to the actual needs of the light source device. For example, the shape of the LED light emitting chip can be set as a square or a circle, etc.

[0049] For example, as shown in FIG. 11B, in the same LED light emitting chip, the number of sub-chips can be set to four. The LED light emitting chip can include four sub-chips 1151, 1152, 1153, and 1154. The four sub-chips can be arranged in a checkered pattern, where R represents a red sub-chip, G represents a green sub-chip, B represents a blue sub-chip, and W represents a white sub-chip. Figure 2

[0050] It is easy to understand that the light emitting surface of the LED light emitting chip refers to the light emitting area surrounded by the periphery of the four sub-chips arranged in a checkered pattern, and the light emitting surface of the LED light emitting chip is set as a square. In the array of LED light emitting chips, a plurality of LED light emitting chips can be located in the same plane, and the plane where the plurality of LED light emitting chips are located can be arranged parallel to the light emitting surface of the LED light emitting chip.

[0051] In this way, the sub-chips of different colors can be controlled separately, so that different color light spots can be emitted. For example, the LED light emitting chip can be spliced by at least two sub-chips, and the light emitting colors of the two sub-chips are different, so that the purpose of emitting colored light can be achieved.

[0052] When the array is formed by a plurality of sub-chips, as shown in FIG. 11C, in the array of LED light emitting chips, at least two LED light emitting chips can include sub-chips of the same color. The placement orientation of the two sub-chips of the same color in the respective LED light emitting chips can be different. Figure 3 For example, the red sub-chip is located at the upper left corner in the upper left LED light emitting chip, at the upper right corner in the upper right LED light emitting chip, at the lower left corner in the lower left LED light emitting chip, and at the lower right corner in the lower right LED light emitting chip, which is more conducive to the mixing of different colors.

[0053]

[0054] ​​It is easy to understand that in the application of stage lights, colored light is a common requirement. Of course, color can also be achieved by white light through color filters, for example, multiple sub-chips can be used to emit white light, and the light-emitting side of different sub-chips can be provided with different color filters, so that the white light emitted by different sub-chips can pass through different color filters to achieve different color light. This way, white light sub-chips can be set uniformly. Compared with the filter setting method, by selecting sub-chips that can emit multiple different color light in the same LED light-emitting chip, the light-emitting control process of the LED light-emitting chip is more convenient, and the number of color light colors is not limited by the number of color filters.

[0055] In some possible embodiments, the number of LED light-emitting chip arrays is at least two, the light-emitting colors of the LED light-emitting chip arrays are different, and the LED light-emitting chip arrays can all emit light towards corresponding collimating lens arrays.

[0056] For example, the light source device can include a first LED light-emitting chip array and a corresponding collimating lens array, a second LED light-emitting chip array and a corresponding collimating lens array, and the light-emitting colors of the first and second LED light-emitting chip arrays are different.

[0057] The light source device can also include a light-splitting filter that can transmit light emitted by the first LED light-emitting chip array and reflect light emitted by the second LED light-emitting chip array. The light emitted by the first LED light-emitting chip array is collected by the corresponding collimating lens array and then exits and transmits through the light-splitting filter to form first exit light. The light emitted by the second LED light-emitting chip array is collected by the corresponding collimating lens array and then exits and is reflected by the light-splitting filter to form second exit light. After the first exit light and the second exit light are combined into one beam, they are incident on the converging lens.

[0058] For example, the number of LED light-emitting chip arrays can be set to three or more. For example, the number of LED light-emitting chip arrays can be set to three, and the three LED light-emitting chip arrays are respectively used to emit red light, green light and blue light. The light-emitting directions of at least two of the three LED light-emitting chip arrays are different.

[0059] The number of collimating lens arrays can be the same as the number of LED light-emitting chip arrays. For example, the number of collimating lens arrays can be set to three. The LED light-emitting chip arrays can all emit light towards corresponding collimating lens arrays, and the collimating lens arrays can collect light from corresponding LED light-emitting chip arrays and emit light through the light-emitting ports of the collimating lens arrays.

[0060] Exemplarily, the light-splitting filter can have a plurality of light-in surfaces and a light-out surface, the light-splitting filter can acquire the light emitted from the plurality of collimating lens arrays through the plurality of light-in surfaces to combine the light emitted from the plurality of collimating lens arrays through the light-splitting filter, and the light-splitting filter can emit the light toward the converging lens through the light-out surface to realize the colored light of different colors.

[0061] The number of the light-in surfaces can be set to three, and the three LED light-emitting chip arrays can emit light toward the light-in surfaces through the corresponding collimating lens arrays respectively, so that the light-splitting filter can combine the light from the three LED light-emitting chip arrays to form the colored light and make the colored light propagate toward the converging lens.

[0062] The light-splitting filter is used to reflect light of a certain waveband (for example, a certain color) and transmit light of other wavebands, and the wavebands of the reflected and transmitted light can be set when the light-splitting filter is designed. The light-splitting filter can be used to couple light of different colors together to emit, so that the light of different colors multiplexes the same light channel, thereby improving the brightness.

[0063] The shape of the light-splitting filter can be set to a quadrangular prism (for example, a cuboid or a cube). The three light-in surfaces and the light-out surface of the light-splitting filter can be sequentially connected, and two light-in surfaces (for example, the first light-in surface and the second light-in surface) are oppositely arranged, and the other light-in surface (for example, the third light-in surface) is oppositely arranged with the light-out surface.

[0064] When the light from the three LED light-emitting chip arrays is combined through the light-splitting filter, the light emitted by the two LED light-emitting chip arrays toward the first light-in surface and the second light-in surface can be reflected through the light-splitting filter, so that the light can be emitted from the light-out surface. The light emitted by the LED light-emitting chip array toward the third light-in surface can be transmitted through the light-splitting filter, so that the light can be emitted from the light-out surface, thereby realizing the light combination process.

[0065] It should be noted that the number of the LED light-emitting chip arrays is multiple, and the arrangement directions of at least part of the plurality of LED light-emitting chip arrays are different.

[0066] Alternatively, the beam splitter can be shaped like a sheet (e.g., a dichroic mirror), and the number of beam splitters can be at least one. A beam splitter can reflect light of a certain wavelength while transmitting light of other wavelengths. The light from some LED chip arrays can change direction after reflection by the beam splitter, while the light from other LED chip arrays can pass through the beam splitter, resulting in the light from multiple LED chip arrays emitting in the same direction, thus achieving light combining. The surface of the beam splitter opposite the light-emitting surface of the LED chip array is the incident surface, and the surface of the beam splitter facing the converging lens is the emitting surface.

[0067] Three LED chip arrays can be placed at different positions on the beam splitter, making the beam splitter structure smaller. The side length of the beam splitter can be determined based on one LED chip array, thus making the overall structure composed of the LED chip array, collimating lens array, beam splitter, and converging lens more compact.

[0068] When the light combining element is set as one or more beam splitting filters, the combined light brightness formed by the LED light-emitting chip array, collimating lens array and beam splitting filters is greater, resulting in better light emission effect of the stage LED light source device.

[0069] like Figure 4 As shown, in some examples, there are three LED chip arrays 1501a, 1501b, and 1501c and corresponding three collimating lens arrays 1502a, 1502b, and 1502c. These three LED chip arrays are of different colors; for example, LED chip array 1501a uses red LED chips (and may also include, but is not limited to, orange or amber LED chips), LED chip array 1501b uses green LED chips (and may also include, but is not limited to, yellow-green or yellow LED chips), and LED chip array 1501c uses blue LED chips (and may also include, but is not limited to, purple or blue-green LED chips).

[0070] The light emitted by the three LED chip arrays is collimated by their respective collimating lens arrays before being emitted. Specifically, this also includes beam-splitting filters 1591 and 1592. The function of the beam-splitting filters is to reflect light of a certain wavelength while transmitting light of other wavelengths. The wavelengths of the reflected and transmitted light can be set during the design of the beam-splitting filters. By using beam-splitting filters, different colors of light can be coupled together for emission, thus multiplexing the same optical path for different colors of light, thereby increasing brightness.

[0071] Specifically, in the present example, for example, the light-splitting filter 1591 can transmit light emitted by the LED chip array 1501a and the LED chip array 1501c while reflecting light emitted by the LED chip array 1501b, and the light-splitting filter 1592 can transmit light emitted by the LED chip array 1501a and the LED chip array 1501b while reflecting light emitted by the LED chip array 1501c, so that the light-splitting filters 1591 and 1592 can guide light 1581a emitted by the LED chip array 1501a, light 1581b emitted by the LED chip array 1501b, and light 1581c emitted by the LED chip array 1501c to synthesize a beam and exit to the converging lens 1503 at the same time by being arranged in a crossed orientation.

[0072] Specifically, the light source device of the present embodiment further comprises a converging lens, which can be arranged on the light exit side of the collimating lens array. As an example, the converging lens 4 is an optical element having a converging effect, for example, the converging lens 4 can converge the incident parallel light to form a focal point.

[0073] In some possible embodiments, the converging lens can be arranged as a convex lens. For example, the converging lens can be arranged as a plano-convex lens, or the converging lens can also be arranged as a biconvex lens.

[0074] Alternatively, the converging lens can be arranged as a Fresnel lens to reduce the thickness of the converging lens, thereby facilitating the arrangement of other optical devices in the saved space.

[0075] In some possible embodiments, the light source device further comprises a light homogenizing structure, such as an ommatidium lens, a diffuser sheet, etc., between the collimating lens array and the converging lens. The light homogenizing structure is used to receive collimated light from the collimating lens array and make the light rays propagate to the converging lens through the light homogenizing structure, and the light homogenizing structure can homogenize the collimated light from the collimating lens array to improve the uniformity of the light.

[0076] In one example, the light homogenizing structure comprises an ommatidium lens group 3 arranged between the collimating lens array and the converging lens 4.

[0077] For example, the ommatidium lens group 3 can comprise a plurality of ommatidium lenses. The plurality of ommatidium lenses can comprise a first ommatidium lens and a second ommatidium lens arranged in sequence along the optical path. The first ommatidium lens comprises a plurality of first convex lenses arranged closely with each other, and the second ommatidium lens comprises a plurality of second convex lenses arranged closely with each other, and the first ommatidium lens and the second ommatidium lens can homogenize incident light.

[0078] In one example, the first fly-eye lens and the second fly-eye lens can be spaced apart, and a propagation medium between the first fly-eye lens and the second fly-eye lens can be air or the like. The first fly-eye lens can be located on a side of the second fly-eye lens close to the collimating lens array, so that light rays from the collimating lens array can pass through the first fly-eye lens and the second fly-eye lens in sequence. In one example, as shown in FIG. 8, the fly-eye lens group 3 specifically includes a first fly-eye lens 805 and a second fly-eye lens 806 arranged in sequence along the optical path between the collimating lens array and the converging lens 4. The first fly-eye lens 805 includes a plurality of first convex lenses arranged closely with each other, and the second fly-eye lens 806 includes a plurality of second convex lenses arranged closely with each other. The fly-eye lens pair (the first fly-eye lens 805 and the second fly-eye lens 806) is used to homogenize the incident light. The use of the fly-eye lens pair can further improve the light homogeneity. Figure 5

[0079] In another example, the first fly-eye lens and the second fly-eye lens can be integrally formed to form a fly-eye lens body, and the first fly-eye lens and the second fly-eye lens respectively form opposite surfaces of the fly-eye lens body. The first fly-eye lens can be arranged as a portion of the fly-eye lens body facing the collimating lens array, and the second fly-eye lens can be arranged as a portion of the fly-eye lens body away from the collimating lens array. In one example, as shown in FIG. 9, the first fly-eye lens 805 and the second fly-eye lens 806 are arranged with an optical medium therebetween, achieving integral formation. In one example, as shown in FIG. 9, the first fly-eye lens 905a and the second fly-eye lens 905b are integrally formed as a fly-eye lens body 905, and the first fly-eye lens 905a and the second fly-eye lens 905b respectively form opposite surfaces of the fly-eye lens body 905. Figure 6 Figure 5 The design of the fly-eye lens body 905 is equivalent to replacing the air layer in the two separate fly-eye lenses in FIG. 8 with an optical medium. The integrally formed fly-eye lens body 905 is more compact and stable.

[0080] By integrating the first fly-eye lens and the second fly-eye lens to form a fly-eye lens body, the propagation medium between the first fly-eye lens and the second fly-eye lens can be arranged as an optical medium. Compared with two separate fly-eye lenses, the integrally formed fly-eye lens body structure is more stable.

[0081] In actual applications, when the projection lens of the rear optical path is zoomed, there is inevitably a focusing process. During this focusing process, the projected converging light spot is in a defocused state. However, in actual applications, the uniformity of the light spot cannot be too poor even in the defocused state during the focusing process. By arranging the fly-eye lens group, the uniformity of the light spot in the defocused state can be achieved. In addition, if the LED light-emitting chip is a multi-color chip, the use of the fly-eye lens can improve the uniformity of color mixing.

[0082] ​​For example, the light source device includes a diffuser. The diffuser can be located at the rear end of the optical path of the converging lens (i.e., the light-emitting side of the converging lens), thereby homogenizing the converging light spot formed by the converging lens.

[0083] The angle-adjusting lens 5 converges the incident parallel light. The principal optical axis of the angle-adjusting lens 5 coincides with the principal optical axis of the converging lens 4. The angle-adjusting lens 5 is positioned on the light-emitting side of the converging lens 4 and receives the collimated light emitted from the converging lens 4. In this embodiment, the angle-adjusting lens is located near the focal plane of the converging lens. Specifically, the distance from the vertex of the light-emitting surface of the converging lens to the vertex of the light-incident surface of the angle-adjusting lens is L, and the focal length of the converging lens 4 is F1. The converging lens and the angle-adjusting lens can be configured such that L ≤ 1.5F1. That is, along the principal optical axis of the converging lens 4, the distance between the light-emitting surface of the converging lens 4 and the light-incident surface of the angle-adjusting lens 5 is L. Specifically, L ≤ 1.5F1. The distance from the vertex of the light-emitting surface of the converging lens to the vertex of the light-incident surface of the angle-adjusting lens can be used to represent the distance between the converging lens and the angle-adjusting lens along the optical axis of the converging lens.

[0084] As mentioned earlier, in order to solve the beam deflection problem, this embodiment sets an angle adjustment lens near the focal plane of the converging lens 4. Combined with... Figure 1 For example, by placing an angle-adjusting lens 5 near the focal plane of the converging lens 4, the upward edge beam 1323 is biased downwards after passing through the angle-adjusting lens 5 to form beam 1326. For instance, edge ray 1323a is biased downwards to form ray 1326a, and the downward edge beam 1324 is biased upwards after passing through the angle-adjusting lens 5 to form beam 1327. Edge ray 1324a is biased downwards to form ray 1327a. Ultimately, the angle of the light emitted from the angle-adjusting lens 5 is reduced. Since the angle-adjusting lens 5 is located near the focal plane of the converging lens 4, it has virtually no impact on the size of the converged light spot on the focal plane. In summary, the angle-adjusting lens 5 can reduce the angle of the light emitted from the converged light spot without affecting the size of the converged light spot, thus solving the problem of edge beam angle deflection, achieving bias correction, and improving the quality of the formed light spot.

[0085] For example, the distance L from the vertex of the exit surface of the converging lens to the vertex of the entrance surface of the angle adjustment lens can be equal to the focal length F1 of the converging lens, that is, the angle adjustment lens is located in the focal plane of the converging lens. When the distance L from the vertex of the exit surface of the converging lens to the vertex of the entrance surface of the angle adjustment lens is equal to the focal length F1 of the converging lens, the focal length F2 of the angle adjustment lens can be the same as the focal length F1 of the converging lens, that is, the converging lens and the angle adjustment lens can be configured as F2=F1. Alternatively, the distance L from the vertex of the exit surface of the converging lens to the vertex of the entrance surface of the angle adjustment lens can be less than the focal length F1 of the converging lens, that is, the angle adjustment lens is located between the focal plane of the converging lens and the converging lens, and the converging lens and the angle adjustment lens can be configured as L≤F1. When the angle adjustment lens is further close to the converging lens, the angle adjustment lens not only has a correction effect on the light beam, but also has an additional converging effect, that is, the divergence angle of the light beam itself is increased (the light beam converges first, then diverges after the focal point. Therefore, the divergence angle after the focal point is equivalent to the convergence angle before the focal point. The additional converging effect brought by the angle adjustment lens increases the convergence angle, so the divergence angle of the light beam is also increased). At the same time, due to the advance of the light beam correction effect, the size of the converging spot is also reduced. Therefore, compared with the way that the angle adjustment lens is arranged at the focal plane of the converging lens, moving the angle adjustment lens towards the converging lens can increase the divergence angle of the light beam while reducing the size of the converging spot, still maintaining the unchanged energy density, which is also allowed. However, if the distance between the angle adjustment lens and the converging lens is less than 0.5F1, that is, half of the focal length of the converging lens, the angle adjustment effect of the angle adjustment lens will be weakened, and the converging effect on the light beam itself (focusing and then continuing to propagate becomes a diverging effect) will become stronger and stronger, until the angle adjustment lens is completely close to the converging lens, the angle adjustment lens completely loses the function of angle adjustment.

[0086] For example, the angle adjustment lens has a converging effect on the incident parallel light, the angle adjustment lens receives the light emitted from the converging lens, and the focal length of the angle adjustment lens is F2, 0.5F1≤F2≤1.5F1. The ratio of the focal length F2 of the angle adjustment lens to the focal length of the converging lens can be set to any one of the ranges of 0.5-0.7, 0.7-0.9, 0.9-1.1, 1.1-1.3, and 1.3-1.5. By setting the above relationship, the angle adjustment lens can correct the angle of the light rays that may be deviated too much, and improve the quality of the light spot.

[0087] For example, the angle adjustment lens can be located at the focal plane of the converging lens. When the distance L between the vertex of the light exit surface of the converging lens and the vertex of the light entrance surface of the angle adjustment lens is equal to the focal length F1 of the converging lens, the focal length F2 of the angle adjustment lens can be the same as the focal length F1 of the converging lens, that is, the converging lens and the angle adjustment lens can be configured as F2=F1. Alternatively, the distance L between the vertex of the light exit surface of the converging lens and the vertex of the light entrance surface of the angle adjustment lens can be less than the focal length F1 of the converging lens, that is, the angle adjustment lens is located between the focal plane of the converging lens and the converging lens, and the converging lens and the angle adjustment lens can be configured as 0.5F1≤F2≤F1. The angle adjustment lens not only has the effect of correcting the light beam, but also has an additional converging effect, that is, the divergence angle of the light beam itself is increased, and the size of the converging spot is correspondingly reduced. Therefore, compared with the way that the angle adjustment lens is arranged at the focal plane of the converging lens, moving the angle adjustment lens towards the converging lens enables the angle adjustment lens to increase the divergence angle of the light beam while reducing the size of the converging spot, and still maintains the unchanged energy density. Alternatively, the converging lens and the angle adjustment lens can be configured as F1≤F2≤1.5F1. The focal length of the angle adjustment lens can be equal to or approximately equal to the distance between the angle adjustment lens and the converging lens, so as to improve the correction effect of the angle adjustment lens. In an example, the angle adjustment lens is located at the rear end of the light path of the converging lens, so as to facilitate the design of the optical system and the arrangement of other optical devices, and avoid mechanical interference.

[0088] In the embodiment, the proximity of the angle adjustment lens to the converging lens is limited. Preferably, the distance L between the vertex of the light exit surface of the converging lens and the vertex of the light entrance surface of the angle adjustment lens, and the distance L' between the vertex of the light exit surface of the angle adjustment lens and the converging spot at the rear end of the light path of the angle adjustment lens satisfy L'≤L. That is, the angle adjustment lens should be closer to the converging spot relative to the converging lens, and the light emission effect is good within this range. Specifically, the converging spot can be arranged such that, when no light deflection structure (for example, the angle adjustment lens) is arranged at the rear end of the converging lens 4, the converging spot is located at the focal plane of the converging lens 4. For example, the converging spot can be understood as the spot with the smallest size near the focal plane of the converging lens 4.

[0089] When the angle adjustment lens is close to the converging lens, that is, the distance L between the vertex of the light exit surface of the converging lens and the vertex of the light entrance surface of the angle adjustment lens is less than the focal length F1 of the converging lens, the focal length F2 of the angle adjustment lens can be reduced to match the angle adjustment requirement. That is, at this time, the converging lens and the angle adjustment lens can be configured as F2≤F1.

[0090] For example, when the distance L from the vertex of the light exit surface of the converging lens to the vertex of the light entrance surface of the angle adjustment lens is less than the focal length F1 of the converging lens, as long as L'≤L is ensured, the deviation correction effect on the converging light spot can be achieved. At this time, the converging light spot is also reduced (the corresponding divergence angle is increased).

[0091] For example, the angle adjustment lens has a converging effect on the incident parallel light, the angle adjustment lens receives the light emitted from the converging lens, the diameter of the circumscribed circle of the light spot range of the light incident on the surface of the angle adjustment lens is D2, and the focal length of the angle adjustment lens is F2, 0.4F2≤D2≤2F2. The ratio of the focal length F2 of the angle adjustment lens to the diameter D2 of the circumscribed circle of the light spot range of the light incident on the surface of the angle adjustment lens 4 can be set to any one of the following ranges: 0.4-0.6, 0.6-0.8, 0.8-1, 1-1.2, 1.2-1.4, 1.4-1.6, 1.6-1.8, and 1.8-2. For example, the angle adjustment lens can be configured as 0.6F2≤D2≤1.2F2. Through the above relationship setting, the setting position of the angle adjustment lens in the system is determined, and the angle adjustment lens at this position can correct the angle of light with large deviation that may occur, thereby improving the quality of the light spot.

[0092] In some embodiments, the angle adjustment lens can be configured as a convex lens. For example, the angle adjustment lens can be configured as a plano-convex lens, or the angle adjustment lens can also be configured as a double-convex lens, or the angle adjustment lens can also be configured as a Fresnel lens.

[0093] In an example, the angle adjustment lens 5 is located in front of the focal plane of the converging lens 4. In an example, the angle adjustment lens 5 can be moved towards the lens. The angle adjustment lens 5 not only has a deviation correction effect on the light beam, but also has an additional converging effect, that is, the divergence angle of the light beam itself is increased (the light beam is first converged, and then diverged after the focal point. Therefore, the divergence angle after the focal point is equivalent to the convergence angle before the focal point. The additional converging effect brought by the angle adjustment lens 5 increases the convergence angle, and thus increases the divergence angle of the light beam). That is, by adjusting the position of the angle adjustment lens, the divergence angle after the focal point can be adjusted. In practical applications, the back end of the stage light source needs to be equipped with other optical processing devices, such as projection devices, to achieve the required display effect. Correspondingly, according to the working parameters of the back-end device, the divergence angle of the light can be adjusted by adjusting the position of the angle adjustment lens to match the back-end device, thereby improving the versatility of the stage light source. Compared with the prior art, the back-end device with a certain working parameter can only be matched with the corresponding stage light source. The present embodiment can effectively improve the versatility of the stage light source, and does not need to specially customize the stage light source for different back-end devices, thereby greatly reducing the cost.

[0094] Meanwhile, since the light beam is corrected in advance, the size of the converging light spot is also reduced. Therefore, moving the angle adjustment lens towards the converging lens can adjust the size of the converging light spot while keeping the energy density unchanged.

[0095] In combination with the foregoing, in one example, as shown in Figure 7 the distance between the vertex of the light exit surface of the converging lens 4 and the vertex of the light entrance surface of the angle adjustment lens 5 is L, and the distance between the vertex of the light exit surface of the angle adjustment lens 5 and the converging light spot at the rear end of the light path of the angle adjustment lens 5 is L', and L'≤L. Specifically, the angle adjustment lens 5 not only corrects the light beam, but also has an additional converging effect, i.e., increases the divergence angle of the light beam (the light beam converges first, and then diverges after the focal point), so the divergence angle after the focal point is equivalent to the convergence angle before the focal point. Meanwhile, since the light beam is corrected in advance, the size of the converging light spot is also reduced. Therefore, moving the angle adjustment lens towards the converging lens can adjust the size of the converging light spot while keeping the energy density unchanged, which is also allowed. When L'≤L, i.e., the angle adjustment lens 5 should be closer to the converging light spot relative to the converging lens 4, the light emission effect is good within this range. As can be seen in the present embodiment, moving the angle adjustment lens towards the converging lens by a certain distance can achieve the beneficial effects described above, and the size of the converging light spot is also reduced.

[0096] Further preferably, when the angle adjustment lens 5 is moved towards the converging lens 4, the focal length F2 of the angle adjustment lens 5 should be reduced to adapt to the need of adjusting the angle. Therefore, preferably, F2≤F1.

[0097] As can be seen in the present embodiment, moving the angle adjustment lens 5 towards the converging lens 4 by a certain distance can achieve the beneficial effects of the present example, and the size of the converging light spot is also reduced.

[0098] In one example, the plurality of collimating lenses in the collimating lens array 12 are closely arranged relative to each other, so that the light is as dense as possible, and the energy density of the light can be increased. Further preferably, the light exit port of the collimating lens is circular or hexagonal, or hexagonal with rounded corners, which is the most compact arrangement.

[0099] In one example, a light homogenizing device is further included between the converging lens and the angle adjustment lens. As an example, a diffuser sheet 708 is used at the rear end of the light path of the converging lens 4, which can homogenize the converging light spot.

[0100] In one example, as shown in Figure 8As shown, the angle adjustment lens 5 is a Fresnel lens, which has the characteristics of ultra-thinness, and can reduce the mechanical interference problem when using optical processing devices such as diaphragms, color filters, etc. near the converging light spot, and is more convenient to use. Moreover, the Fresnel lens itself also has a certain light homogenization function.

[0101] In one example, the angle adjustment lens 5 can also be located at the rear end of the light path of the focal plane of the converging lens, as long as it is near the focal plane of the converging lens, and L≤1.5F 1， The effect of correcting the emission angle can be achieved.

[0102] In one example, the angle adjustment lens 5 is a Fresnel lens, so the space between the converging lens 4 and the angle adjustment lens 5 is larger, which is more convenient for placing other optical processing elements.

[0103] In the application of stage lighting, colored light is a common requirement. In one example, color can be achieved by filtering white light through a color filter. In another example, the LED light-emitting chip is formed by splicing at least two LED sub-chips with different colors, which can achieve the purpose of this example. In one example, as shown, Figure 2 The four LED sub-chips 1151, 1152, 1153, 1154 are arranged in a checkboard pattern, and R represents red, G represents green, and B represents blue. In this way, different colors of LED sub-chips are controlled separately, and different colors of the converging light spot can be achieved. Preferably, when the multi-color LED is formed into an array, at least part of it is arranged in Figure 3 That is, in the LED light-emitting chip array, at least two LED light-emitting chips include LED sub-chips of the same color, and the two LED sub-chips of the same color are placed in different positions in the respective LED light-emitting chip. For example, the red LED sub-chip is located at the upper left corner in the upper left LED light-emitting chip, at the upper right corner in the upper right LED light-emitting chip, at the lower left corner in the lower left LED light-emitting chip, and at the lower right corner in the lower right LED light-emitting chip. This is more conducive to mixing different colors.

[0104] In one example, a pattern diaphragm can also be included near the angle adjustment lens, which can be located at the front end or rear end of the light path of the angle adjustment lens. The pattern diaphragm includes a light-transmitting area with a pattern.

[0105] The pattern diaphragm can be used in cooperation with a projection lens for projecting the pattern of the light-transmitting area of the pattern diaphragm to the far field. The distance between the pattern diaphragm and the vertex of the light-emitting surface of the angle adjustment lens is less than half of F1, where F1 is the focal length of the converging lens.

[0106] According to the foregoing embodiments, the angle adjustment lens can be located at the front end of the light path of the converging light spot or at the rear end of the light path of the converging light spot, and the distance between the angle adjustment lens and the converging light spot is generally less than half of F1. The distance between the pattern diaphragm and the vertex of the light exit surface of the angle adjustment lens is less than half of F1, which can ensure that the brightness of the light at the pattern diaphragm is as high as possible, so that the brightness of the pattern light projected to the far field through the projection lens is also as high as possible.

[0107] In some possible embodiments, the remote irradiation LED light source deviation correction device comprises a light adjustment device located between the converging lens and the angle adjustment lens.

[0108] The light adjustment device can be used to adjust the color, color temperature, angle distribution or surface distribution of the light. For example, the light adjustment device is a Cyan, Magenta, Yellow (CMY) filter, which has a light transmission area, the light transmission area includes a colorless transparent area and a colored area, the colorless transparent area and the colored area are mixed with each other, and the area ratio of the colorless transparent area to the colored area is different in at least two sub-areas in the light transmission area.

[0109] In this way, the gradual color change can be achieved by placing different positions in the light transmission area in the light path. Since the light adjustment device is located between the converging lens and the angle adjustment lens, the projection lens does not image it, so the color mixing of the colorless transparent area and the colored area in the light transmission area is naturally achieved.

[0110] In addition to the CMY filter for changing the control of the color, the light adjustment device can include multiple components to achieve the control of other optical effects such as angle distribution, surface distribution, etc.

[0111] Embodiment I

[0112] As shown in Figure 1 The light source device comprises an array of LED light emitting chips, which comprises a plurality of LED light emitting chips. The light source device further comprises an array of collimating lenses, which comprises a plurality of collimating lenses, each collimating lens corresponding to each LED light emitting chip, and the collimating lens is used to collect the light emitted by the corresponding LED light emitting chip and make the light exit through the light exit port of the collimating lens.

[0113] This embodiment also includes an angle-adjusting lens 5, which converges incident parallel light and receives light emitted from the converging lens 4. The angle-adjusting lens 5 is located near the focal plane of the converging lens 4. Specifically, the distance from the vertex of the light-emitting surface of the converging lens to the vertex of the light-incident surface of the angle-adjusting lens is L, where L≤1.5F1. The angle adjustment lens 5 has little effect on the divergence angle of the incident beams 423 and 424, but it has a corrective effect on the overall deflection angle of the incident beams 1323 and 1324. That is, the edge angle beam 1323a, which is deflected upward, is deflected downward after entering the angle adjustment lens 5 to form beam 1326a. The edge angle beam 1324, which is deflected downward, is deflected upward after entering the angle adjustment lens 5 to form beam 1327. Among them, the ray 1324a with the largest angle is deflected into ray 1327a after passing through the angle adjustment lens 5. Finally, the angle of the light emitted from the angle adjustment lens 5 is reduced and equal to the divergence angle of each beam itself.

[0114] In this embodiment, preferably, the collimating lenses in the collimating lens array are arranged closely together, which can make the light as dense as possible, reducing the module size while increasing the light energy density. More preferably, the light outlet of the collimating lens is circular or hexagonal, or hexagonal with rounded corners, which is the most compact arrangement.

[0115] Implementation Method 2

[0116] like Figure 7 As shown, compared with Embodiment 1, in this embodiment, the angle adjustment lens 5 is not placed near the focal plane of the converging lens 4, but is moved toward the converging lens 4.

[0117] At this point, referring to the edge angle beam, the angle adjustment lens 5 not only corrects the beam's deviation but also has an additional converging effect, which increases the beam's divergence angle (the beam converges first, then diverges after passing the focal point. Therefore, the divergence angle after the focal point is equal to the convergence angle before the focal point. The additional converging effect of the angle adjustment lens 5 increases the convergence angle, thus increasing the beam's divergence angle).

[0118] Simultaneously, due to the earlier occurrence of beam correction, the size of the converging spot is correspondingly reduced. Therefore, moving the angle adjustment lens closer to the converging lens, allowing it to increase the beam divergence angle while decreasing the converging spot size, while maintaining a constant energy density, is permissible. However, if the angle adjustment lens is moved excessively close to the converging lens, its angle correction effect will weaken, while its beam-converging effect (which becomes diverging after focusing) will strengthen, until the angle adjustment lens is completely adjacent to the converging lens, at which point it completely loses its angle adjustment function.

[0119] Therefore, the approach of the angle-adjusting lens towards the converging lens should be limited. Specifically, the distance from the vertex of the emitting surface of the converging lens to the vertex of the incident surface of the angle-adjusting lens is L, and the distance from the vertex of the emitting surface of the angle-adjusting lens to the converging spot at the rear end of the optical path of the angle-adjusting lens is L', where L' ≤ L. That is, relative to the converging lens, the angle-adjusting lens should be closer to the converging spot; within this range, the light emission effect is relatively good. Further preferably, when the angle-adjusting lens moves towards the converging lens, the focal length F2 of the angle-adjusting lens should decrease to adapt to the need for angle adjustment. Therefore, preferably, F2 ≤ F1.

[0120] As can be seen in this embodiment, by moving the angle adjustment lens 5 slightly towards the converging lens 4, as long as L'≤L, the beneficial effect of this example can be achieved.

[0121] Another difference from Embodiment 1 is that in this embodiment, a diffuser 708 is used at the rear end of the optical path of the converging lens 4, which can homogenize the converging light spot.

[0122] Implementation Method 3

[0123] like Figure 8 As shown, this embodiment differs from embodiment one in the following ways:

[0124] The compound eye lens group 3 in this embodiment specifically includes a first compound eye lens 805 and a second compound eye lens 806 arranged sequentially along the optical path between the collimating lens array and the converging lens 4. The first compound eye lens 805 includes a plurality of closely arranged first convex lenses, and the second compound eye lens 806 includes a plurality of closely arranged second convex lenses. The compound eye lenses are used to homogenize the incident light. Additionally, if the LED light-emitting chip is a multi-color chip (e.g., ...), ... Figure 2 If, as in the embodiment shown in Figure 3, then using a compound eye lens can improve the uniformity of color mixing.

[0125] The angle adjusting lens 5 of the embodiment is a Fresnel lens, which has the characteristics of thinness, can reduce the mechanical interference problem when using optical processing devices such as diaphragms and color sheets near the converging light spot, and is more convenient to use. Moreover, the Fresnel lens itself also has a certain light homogenization function.

[0126] Embodiment four

[0127] As shown in Figure 6 Compared with the third embodiment, the difference is that in the present embodiment, the first compound eye lens 905a and the second compound eye lens 905b are integrally formed into one compound eye lens body 905, and the first compound eye lens 905a and the second compound eye lens 905b are respectively opposite two surfaces of the compound eye lens body 905. The design of the compound eye lens body 905 is equivalent to replacing the air layer in the two independent compound eye lenses with an optical medium, and the integrally formed compound eye lens body 905 has better stability.

[0128] The remote irradiation LED light source deviation correction device provided by the embodiment comprises a light source device and an angle adjusting lens, wherein the light source device comprises a collimating lens and a converging lens, the collimated light emitted by the collimating lens is focused by the converging lens to form a converging light spot, and the angle adjusting lens is arranged near the focal plane of the converging lens according to the focal length of the converging lens. The angle adjusting lens has a converging effect, the angle adjusting lens at the specific position receives the light emitted by the light source device, can correct the overall deflection angle, and thus solves the problem of deflection of the edge light beam angle and improves the quality of the formed light spot.

[0129] Embodiment two

[0130] The embodiment of the present application also provides a light emitting system, a structure diagram of which is shown in Figure 9 The light emitting system comprises the remote irradiation LED light source deviation correction device of any one of the above examples. Wherein, 1403 is the converging lens.

[0131] In one example, a light adjusting device 1411 is disposed between the angle adjusting lens 1404 and the converging lens 1403. The light adjusting device can be used to adjust the color, color temperature, angle distribution or surface distribution of the light. For example, the light adjusting device is a CMY filter, which has a light transmission area, the light transmission area includes colorless transparent areas and colored areas, the colorless transparent areas and the colored areas are mixed with each other, and the area ratio of the colorless transparent areas to the colored areas in at least two sub-areas in the light transmission area is different. In this way, the color gradient can be achieved by placing different positions in the light transmission area in the light path. Since the light adjusting device 1411 is located between the converging lens 1403 and the angle adjusting lens 1404, the projection lens 1413 does not image it, so the color mixing of the colorless transparent areas and the colored areas in the light transmission area is naturally achieved. In addition to the CMY filter to achieve the change of the color control, the light adjusting device 1411 can include multiple components to achieve the control of other optical effects such as angle distribution, surface distribution, etc.

[0132] In one example, the light emitting system further includes a pattern light barrier 1412 located near the angle adjusting lens 1404. The pattern light barrier 1412 can be located at the front end of the light path of the angle adjusting lens 1404 (for example, a Fresnel lens is used as an example in the figure) or at the rear end of the light path of the angle adjusting lens 1404 (as shown in the figure). Figure 3 The pattern light barrier is located at the rear end of the light path of the angle adjusting lens.

[0133] In one example, the light emitting system further includes a projection lens 1413 for projecting the pattern of the light transmission area 1412a of the pattern light barrier to the far field. The distance between the pattern light barrier 1412 and the vertex of the light emitting surface of the angle adjusting lens 1404 is less than half of F1, where F1 is the focal length of the converging lens 1403.

[0134] Optionally, the pattern light barrier 1412 is placed at the position of the converging light spot. Therefore, the distance between the pattern light barrier 1412 and the vertex of the light emitting surface of the angle adjusting lens 1404 is less than half of F1, which can ensure that the brightness of the light at the pattern light barrier 1412 is as high as possible, so that the brightness of the pattern light projected to the far field by the projection lens 1413 is also as high as possible.

[0135] In the light emitting system provided by the embodiment, the light source device of the remote irradiation LED light source deviation correction device includes a converging lens, and the light emitted by the converging lens forms a converging light spot. According to the focal length of the converging lens, an angle adjusting lens is arranged near the focal plane of the converging lens. The angle adjusting lens has a converging effect. The angle adjusting lens at the specific position receives the light emitted by the light source device and can correct the overall deflection angle, thereby solving the problem of deflection of the edge light beam angle and improving the quality of the formed light spot.

[0136] In the above embodiments, the descriptions of each embodiment have their own emphasis. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification.

[0137] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the utility model disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only.

[0138] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope.

[0139] Finally, it should be noted that other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope.

Claims

1. A remote irradiation LED light source deviation rectifying device, characterized in that, The application relates to a light source device and an angle-adjusting lens. The light source device comprises an LED light-emitting chip array, a collimating lens array and a converging lens; the LED light-emitting chip array comprises a plurality of LED light-emitting chips, the collimating lens array comprises a plurality of collimating lenses, each collimating lens corresponds to each LED light-emitting chip, and the collimating lens is used for collecting light emitted by the corresponding LED light-emitting chip and emitting collimated light; and the converging lens is used for receiving the collimated light emitted from the collimating lens array and forming a converging light spot. The angle-adjusting lens has a converging effect on incident parallel light, is arranged near a focal plane of the converging lens, and receives light emitted by the converging lens; wherein, along a main optical axis, the distance between the light-emitting surface of the converging lens and the light-receiving surface of the angle-adjusting lens is less than or equal to 1.5 times the focal length of the converging lens. Along the main optical axis, the distance between the vertex of the light-emitting surface of the angle-adjusting lens and the converging light spot at the rear end of the light path of the angle-adjusting lens is less than or equal to the distance between the light-emitting surface of the converging lens and the light-receiving surface of the angle-adjusting lens.

2. The apparatus of claim 1, wherein, The focal length of the angle-adjusting lens is less than or equal to 1.5 times the focal length of the converging lens and greater than or equal to half the focal length of the converging lens.

3. The apparatus of claim 1, wherein, The angle-adjusting lens and / or the converging lens is a Fresnel lens.

4. The apparatus of claim 1, wherein, The device further comprises:

5. The apparatus of claim 1, wherein, An ommatidium lens group comprising a first ommatidium lens and a second ommatidium lens arranged in sequence along the light path between the collimating lens array and the converging lens, the first ommatidium lens comprises a plurality of first convex lenses arranged closely with each other, and the second ommatidium lens comprises a plurality of second convex lenses arranged closely with each other. The device further comprises: a light homogenizing device between the converging lens and the angle-adjusting lens; and / or a light homogenizing structure between the collimating lens array and the converging lens.

6. The apparatus of claim 1, wherein, The LED light-emitting chip comprises at least two sub-chips, and the light-emitting colors of the at least two sub-chips are different; 7. The device of any one of claims 1-6, wherein, In the LED light-emitting chip array, in the at least two light-emitting chips, the sub-chips with the same light-emitting color are arranged in different positions in the respective light-emitting chips. In the same light-emitting chip, the number of the sub-chips is four, and the four sub-chips are arranged in a checkboard pattern.

8. The apparatus of claim 7, wherein, The light source device comprises a first LED light-emitting chip array and a corresponding collimating lens array, and a second LED light-emitting chip array and a corresponding collimating lens array; the light-emitting colors of the first LED light-emitting chip array and the second LED light-emitting chip array are different; 9. The device of any one of claims 1-6, wherein, ​ The light source device further comprises a light splitting filter capable of transmitting light emitted by the first LED light chip array and reflecting light emitted by the second LED light chip array, the light emitted by the first LED light chip array being collected by the corresponding collimating lens array and then emitted and transmitted by the light splitting filter to form first emitted light, the light emitted by the second LED light chip array being collected by the corresponding collimating lens array and then emitted and reflected by the light splitting filter to form second emitted light, the first emitted light and the second emitted light being combined into one bundle and then incident on the converging lens.

10. A light emitting system characterized in that, Comprising: The remote irradiation LED light source deviation rectifying device according to any one of claims 1-9, and a pattern diaphragm located near the angle adjusting lens, the pattern diaphragm comprising a light transmission area with a pattern; The light emitting system further comprises a projection lens located at the rear end of the light path of the pattern diaphragm, the projection lens being used for projecting the pattern of the light transmission area of the pattern diaphragm to a far field. The light emitting system further comprises a projection lens located at the rear end of the light path of the pattern diaphragm, the projection lens being used for projecting the pattern of the light transmission area of the pattern diaphragm to a far field.

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