WO2014111058A1 - Illuminating system and related light-emitting device thereof - Google Patents

Illuminating system and related light-emitting device thereof Download PDF

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Publication number
WO2014111058A1
WO2014111058A1 PCT/CN2014/070935 CN2014070935W WO2014111058A1 WO 2014111058 A1 WO2014111058 A1 WO 2014111058A1 CN 2014070935 W CN2014070935 W CN 2014070935W WO 2014111058 A1 WO2014111058 A1 WO 2014111058A1
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WO
WIPO (PCT)
Prior art keywords
lens
light
collimating
array
fly
Prior art date
Application number
PCT/CN2014/070935
Other languages
French (fr)
Chinese (zh)
Inventor
唐怀
杨义红
张权
Original Assignee
深圳市光峰光电技术有限公司
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Publication of WO2014111058A1 publication Critical patent/WO2014111058A1/en

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/0006—Arrays
    • G02B3/0037—Arrays characterized by the distribution or form of lenses
    • G02B3/0056—Arrays characterized by the distribution or form of lenses arranged along two different directions in a plane, e.g. honeycomb arrangement of lenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/008—Combination of two or more successive refractors along an optical axis
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
    • G02B19/0019—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having reflective surfaces only (e.g. louvre systems, systems with multiple planar reflectors)
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
    • G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
    • G02B19/0061—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a LED
    • G02B19/0066—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a LED in the form of an LED array
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the utility model relates to the technical field of illumination and display, in particular to an illumination system and related illumination device.
  • the spot light formed on the target surface of the stage light is generally a circular spot with uniform illumination everywhere, and the spot is generally a 'hard spot', that is, the spot has a clearly clear edge.
  • a common usage is to splicing a plurality of circular spots formed on a target surface by a plurality of stage lights to form a large spot with uniform illumination everywhere.
  • the circular spot formed on the target surface of each stage lamp has uniform illumination everywhere, in the large spot formed by the splicing, the brightness of the overlap of the two circular spots is much higher than that of other places, forming a bright spot. There is a dark area between the two spots that are not overlapped and unspliced, and the brightness is much lower than other places, resulting in uneven illumination of the large spot on the target surface.
  • the technical problem mainly solved by the present invention is to provide an illumination system that avoids the occurrence of bright spots in the light spot.
  • An embodiment of the present invention provides an illumination system including at least two illumination devices, wherein each illumination device includes:
  • An array of solid state light emitting devices comprising a plurality of solid state light emitting devices for generating a first light beam
  • a collimating device for collimating the first beam
  • a fly-eye lens comprising an array of lens units combined by a plurality of lens units for homogenizing a first light beam collimated by the collimating device such that a light distribution distributed over 0 degrees in the light emitted by the fly-eye lens Maximum, distance 0 The greater the distance of the degree, the less the light distribution at the angle;
  • a converging lens for collecting a first light beam from the fly-eye lens and converting the angular distribution thereof into a surface distribution such that an average illuminance of a central region of the spot formed by the first light beam on the target plane is greater than an edge region of the light spot average illumination
  • the edge regions between the respective central regions of the spots formed by the illumination of any two adjacent illumination devices on the target plane are at least partially superimposed.
  • the ratio of the illuminance of the central region of the spot formed on the target plane of each illuminating device to the illuminance of the edge region is greater than or equal to 1.5: 1 and less than or equal to 3 : 1 .
  • the edge regions between the respective central regions of the spots formed by the illumination of any two adjacent illumination devices on the target plane are superimposed on each other, and wherein at least one of the two edge regions is different from the other The central area of a spot just meets.
  • the embodiment of the present invention further provides a light emitting device, including:
  • a collimating device for collimating the first beam
  • a fly-eye lens comprising an array of lens units combined by a plurality of lens units for homogenizing a first light beam collimated by the collimating device such that a light distribution distributed over 0 degrees in the light emitted by the fly-eye lens Maximum, distance 0 The greater the distance of the degree, the less the light distribution at the angle;
  • a converging lens for collecting a first light beam from the fly-eye lens and converting the angular distribution thereof into a surface distribution such that an average illuminance of a central region of the spot formed by the first light beam on the target plane is greater than an edge region of the light spot average illumination.
  • the light emitting device further includes a substrate, and the solid state light emitting device array is disposed on the substrate;
  • the collimating device includes a collimating lens, and the collimating lens is provided with an array of collimating lenses;
  • the converging lens is fixed in the top side open cavity of the bracket or the top side open cavity;
  • the fly-eye lens is smaller than the bottom side open cavity and larger than the top side open cavity, and the fly-eye lens is fixed on the support table in the bottom side open cavity;
  • the alignment device and the solid state light emitting device array are smaller than the bottom side open cavity, the substrate is larger than the bottom side open cavity, the collimating device is fixed on the substrate, and the substrate is fixedly connected with the bracket to The light emitting device array, the collimating lens, and the fly-eye lens are enclosed together in the bottom side opening of the bracket.
  • the substrate, the collimating device, the edge position on the fly-eye lens, the edge of the bottom side open cavity on the bracket, and the support table are each provided with at least two screw holes;
  • the illumination device also includes a plurality of screws for securing the components and the brackets to each other.
  • the solid-state light-emitting device array, the collimating lens array in the collimating device, and the lens unit array on the fly-eye lens have the same shape, and the collimating device, the fly-eye lens, and the bottom side of the bracket are open-ended The shapes are the same.
  • the converging lens is matched with the shape of the top side opening of the bracket, and the inner wall of the top side opening is provided with a step around the top side opening, and the outer wall is provided with a spiral pattern;
  • the light emitting device further includes an annular cap so that the annular cap can be secured to the converging lens by the cap on the top side opening when the converging lens is placed on the step.
  • the collimating device comprises a first collimating lens and a second collimating lens, wherein the first collimating lens comprises a spherical lens array formed of glass; and the second collimating lens comprises an aspheric lens array , made of plastic mold opening;
  • a first collimating lens is for receiving a first beam from the array of solid state light emitting devices, and a second collimating lens is for receiving a first beam from the first collimating lens.
  • the utility model includes the following beneficial effects:
  • the first light beam collimated by the collimating device is incident on the fly-eye lens
  • the first light beam is divided into a plurality of sub-beams by a plurality of lens units, wherein each lens unit can be regarded as a sub-light source. Since the first beam on the incident fly-eye lens is not a strictly collimated beam, the spot formed on the target plane after each sub-light source passes through the converging lens is not completely overlapped but partially overlapped, and is homogenized by the fly-eye lens.
  • the illumination system can employ at least two illumination devices, and in the illumination system
  • the spots formed by the illumination of any two adjacent illuminators on the target plane are partially superimposed on each other, and the superposition of the two large spots to the two large spots is compared with the superposition of the two uniform spots in the background art.
  • the transition of the illuminance in the central region is more moderate, avoiding the occurrence of bright spots at the splicing of two adjacent spots.
  • FIG. 1 is a schematic diagram of an optical path of a light-emitting device in an illumination system of the present invention
  • 2A is a schematic diagram of an optical path when a incident light of a lens unit is a parallel beam of 0 degrees;
  • 2B is a schematic diagram of an optical path when the incident light of the lens unit is a parallel beam of more than 0 degrees;
  • 2C is a schematic diagram of an optical path when the incident light of the lens unit is a parallel beam of less than 0 degrees;
  • Figure 3 is an overlay of four spots formed by the illumination system on the target plane
  • FIG. 4 is a schematic structural view of a light-emitting device in the illumination system of the present invention.
  • Figure 5 is an exploded view of the light-emitting device shown in Figure 4.
  • FIG. 6A is a schematic structural view of the bracket in the light-emitting device shown in FIG. 4 as viewed from the bottom side;
  • 6B is a schematic structural view of the bracket in the light-emitting device shown in FIG. 4 viewed from the top side;
  • Figure 7 is an assembly method of the light-emitting device shown in Figure 4.
  • the uniformity of illumination in a region referred to hereinafter means that the difference between the illuminance in the region and the average illuminance in the region is less than 50% of the average illuminance.
  • the average illuminance refers to the ratio of the total illuminance in a region to the area of the region.
  • FIG. 1 is a schematic diagram of an optical path of a light-emitting device in an illumination system of the present invention.
  • the light emitting device comprises an array of solid state light emitting devices 1.
  • Collimation device 2 fly-eye lens 3 and converging lens 4 .
  • the solid state light emitting device array 1 includes a plurality of solid state light emitting devices 11 , wherein each solid state light emitting device 11 The axes of illumination are parallel and directed to each other such that the array of solid state light emitting devices produces a first beam of light.
  • each solid state light emitting device 11 is specifically a white LED (Light Emitting) Diode, LED).
  • each solid state light emitting device 11 can also be an LD (Laser Diode) or other solid state light emitting device.
  • the collimating device 2 is specifically a collimating lens array 2.
  • the collimating lens array 2 includes a plurality of collimating lenses 22 , wherein the collimating lens 22 is in one-to-one correspondence with the solid state light emitting device 11 , and each collimating lens 22 For collimating the illumination of the corresponding solid state light emitting device.
  • a collimating lens 22 may be used corresponding to at least two solid state light emitting device arrays. 11 program.
  • the collimating device 2 may also be not a collimating lens array but other devices having a collimating function for the beam, such as a reflective curved surface or other device.
  • Each of the solid state light emitting devices 11 emits light through a collimating lens 22 corresponding thereto After collimation, it is not a strict parallel light, but a beam with a certain divergence angle, and the design quality of the collimating lens determines the size of the divergence angle.
  • the LED is illuminated by the collimating lens 22 After collimation, it is generally a beam with a divergence angle of ⁇ 10 to ⁇ 15 degrees.
  • the fly-eye lens 3 is located on the outgoing light path of the collimating lens array 2 exiting the first light beam for the collimated lens array 2
  • the collimated first beam is homogenized.
  • the converging lens 4 is located on the outgoing optical path of the fly-eye lens 3 to emit the first beam for the counter-eye lens 3
  • the first light of the homogenized light is collected and its angular distribution is converted into a surface distribution such that the first light beam forms a spot on the target plane.
  • Compound eye lens 3 A lens unit array composed of a plurality of lens units is included. A first light beam having a certain divergence angle is incident on the lens unit array, the lens unit array splits the first light beam into a plurality of sub-beams, and each of the sub-beams acts through a lens unit and passes through a converging lens 4 Collect and eventually form a small spot on the target plane. Therefore, the plurality of lens units on the fly-eye lens 3 can be regarded as a plurality of sub-light sources, and the light emitted from the plurality of sub-light sources respectively passes through the converging lens 4 After the convergence, a plurality of small spots formed on the target plane are superimposed into one spot.
  • the small spot described hereinafter refers to a spot formed by the outgoing light of one lens unit on the target plane
  • the large spot refers to the fly-eye lens. 3
  • the solid-state light-emitting device Since the solid-state light-emitting device emits light without uniform angular distribution, it passes through the collimating lens array 2 The beam formed after collimation is not evenly distributed, and the angular distribution of the sub-beams incident on each lens unit is not exactly the same, so the angular distribution of the light emitted by each sub-light source is not exactly the same, which leads to The positions of the individual small spots are not exactly the same, and therefore, the small spots are partially superimposed on each other to form a large spot.
  • the upper lens unit divides the first beam into a plurality of sub-beams and then partially superimposes the small spots formed by the plurality of sub-beams on the target plane, and each solid-state light-emitting device 11 is a white LED, and different solid-state light-emitting devices 11
  • the color difference between the illuminations is small, so that the color difference between the plurality of solid-state light-emitting devices in the solid-state light-emitting device array 2 is also differentiated and then integrated, thereby forming a large spot of uniform color on the target plane.
  • FIG. 2A is a schematic diagram of an optical path when the incident light of the lens unit 301 is a parallel beam of 0 degrees.
  • the angle in the sub-beam is The angular distribution on 0 (the beam parallel to the central axis of the lens unit 301) passes through the lens unit 301 to form an angular distribution over the range of [ - ⁇ 0 , + ⁇ 0] , where ⁇ 0 > 0 .
  • Fig. 2B Fig.
  • FIG. 2B is a schematic view of the optical path when the incident light of the lens unit 301 is a parallel beam of more than 0 degrees.
  • the angle in the sub-beam is ⁇ ( ⁇ > 0
  • the light distribution over the lens unit forms an angular distribution over an angular range [ ⁇ 1 , ⁇ 2], where 0 ⁇ - ⁇ 1 ⁇ ⁇ and ⁇ 2 > ⁇ .
  • Figure 2C It is a schematic diagram of the optical path when the incident light of the lens unit 301 is a parallel beam of less than 0 degrees.
  • the light distribution in the sub-beam with an angle of ⁇ (- ⁇ ⁇ ⁇ ⁇ 0) is formed through the lens unit to form an angular range
  • the energy of the light distribution at a small angle is high, and the energy of the light distribution at a large angle is low, so that the reticular lens 3 is concentrated by the condensing lens 4
  • the angular distribution of the first light beam is converted into a surface distribution to form a large spot whose central illuminance is higher than the average illuminance of the edge region, wherein the illuminance of the central region of the large spot formed on the target plane and the illuminance of the edge region
  • the ratio is the ratio of the energy of the corresponding angular distribution on the central region to the energy of the corresponding angular distribution on the edge region.
  • the central region of a large spot referred to herein refers to a region having a distance from the center of the large spot that is less than or equal to 1/X of the aperture of the large spot, where X ⁇ 2, X
  • the specific value can be determined according to actual needs; the edge area of the large spot refers to the area other than the central area of the large spot.
  • each of the lens units may also be an aspherical surface.
  • the fly-eye lens can be determined according to the ratio of the central region illuminance of the large spot on the target plane and the illuminance of the edge region.
  • the angular distribution at different angles of the outgoing light, and the curvature of the surface of each lens unit are designed such that the light distribution at different angles of the exiting light of the fly-eye lens 3 conforms to a predetermined value.
  • the fly-eye lens 3 The curvature of each of the upper lens units may be different, or the spherical lens array and the aspherical lens may be simultaneously included in the lens unit array.
  • the collimating device 2 and the fly-eye lens 3 can also be used. Consolidate into one.
  • one side is provided with an array of collimating lenses, and the other side is provided with an array of lens elements on a fly-eye lens.
  • the illumination system includes at least two of the above-described illumination devices, and the large spots formed on the target plane by any two adjacent illumination devices are partially superimposed to each other to form a composite spot.
  • the synthetic spot in the description herein includes an intermediate region and an edge region, wherein the intermediate region refers to a central region of each of the large spots in the composite spot and a region enclosed by the central regions, the edge region refers to Is the area of the synthetic spot other than the middle area.
  • FIG 3 It is an overlay of four large spots formed by the illumination system on the target plane.
  • the average illuminance ratio of the central and edge regions of each large spot is 2 : 1 .
  • the edge regions between the adjacent central regions of the two adjacent large spots are superimposed on each other, and after the superposition, the two edge regions are each just connected to the central region of the other spot, so that the illuminance of the superimposed portion is large with each
  • the average illuminance of the central region of the spot is uniform, thereby making the illuminance uniform in the middle region of the synthetic spot.
  • the two edge regions may also be only partially superposed, that is, the two edge regions do not engage with the central region of the other spot after the superposition.
  • the edge region of the synthetic spot can also be sacrificed, leaving only the intermediate uniform illumination region to cause the illumination system to form a uniform illumination spot in the illumination region.
  • the ratio of the illuminance between the central region and the edge region of each large spot may not be 2 : 1 , as long as the average illuminance of the central area of each large spot is larger than the average illuminance of the edge area, the synthetic spot formed when partially superimposed does not have bright spots or dark areas.
  • the edge portions of the adjacent two large spots are superimposed compared to the two uniform spots in the background art.
  • Superimposing, in this embodiment, the transition of the illuminance of the superimposed portion of the two large spots to the central region of the two large spots is more moderate, and the occurrence of bright spots or dark areas in the synthetic spot is avoided.
  • the average illuminance ratio of the central region and the edge region of each large spot is greater than or equal to 1.5:1 and less than or equal to 3:1 .
  • the superimposed portion is an edge portion of each of the large spots, so that the uniformity of the intermediate portion of the synthetic spots in which the large spots are superposed is good.
  • the solid state light emitting device array 1 may not be a solid state light emitting device of the same color.
  • the composition is composed of solid-state light-emitting devices 11 of at least two colors.
  • the solid state light emitting device array 1 is composed of R (red, red), G (green, green), B ( Blue, blue, W (white, white) four color solid state light emitting device array 11 Composition.
  • R red, red
  • G green
  • B Blue, blue, W (white, white) four color solid state light emitting device array 11 Composition.
  • the solid-state light-emitting device array 1 in order to make the light of the different color solid-state light-emitting devices illuminate more uniformly on the target plane, preferably, in the solid-state light-emitting device array 1
  • the four different color solid-state light-emitting devices are combined units, and the combined units are arranged adjacent to each other. In practical use, the four different color LEDs can be packaged together to form an LED unit.
  • the fly eye lens 3 Due to the fly eye lens 3 The small spots formed by the light emitted from the respective lens units on the target plane are partially superimposed rather than completely superimposed, and then the color uniformity is better because the superimposed portions are uniformly mixed due to the light of different colors. However, since the edge portion is not superposed by all the small spots, the color uniformity is poor. In the present embodiment, since the spots formed by the adjacent two light-emitting devices on the target plane are superimposed on each other, the superposition of the edge portions of the adjacent two spots can improve the color uniformity of the superimposed portion to some extent.
  • FIG. 4 is a schematic structural view of a light-emitting device in the illumination system of the present invention
  • FIG. 5 is FIG. An exploded view of the illustrated illumination device.
  • the light emitting device 400 includes an array of solid state light emitting devices (not shown), a collimating device 2, a fly eye lens 3, a holder 6, and a converging lens 4.
  • the solid state light emitting device array is specifically an LED array.
  • Each LED is packaged on a substrate 12 They are arranged in an array and the array is octagonal.
  • Each LED chip can be first placed on the ceramic substrate or other heat sink and then placed on the substrate 12, or the LED chip can be directly packaged onto the substrate.
  • the substrate 12 has a rectangular shape.
  • the substrate 12 except for the area where the octagonal LED array 1 is located, the substrate 12 has two screw holes at the four corners, respectively, which are screw holes 11a and 12a, screw holes 11b and 12b, screw holes 11c and 12c, screw holes 11d and 12d.
  • the collimating lens array is preferably made of glass to be heat resistant.
  • the glass lens is generally a spherical lens rather than an aspheric lens, but the collimating effect of the spherical lens is not ideal. Therefore, it is preferable to place an aspherical lens array on the outgoing light path of the spherical lens array so that The collimating effect is better, and the aspherical lens is preferably made of a plastic mold to reduce the cost while taking into account the collimating effect.
  • the collimating device 2 preferably includes a spherical lens array 201 and an aspheric lens array which are juxtaposed on the optical path. 202.
  • the collimating device 2 may also include only one collimating lens array.
  • Each spherical lens in the spherical lens array 201 is disposed to the same collimating lens 21
  • each aspherical lens in the aspherical lens array 202 is also disposed on the same piece of collimating lens 22.
  • the spherical lens array 201 is located on the outgoing light path of the LED array 1, and the spherical lens array Each of the lenses 201 is arranged in an octagonal array and is in one-to-one correspondence with each of the LEDs in the LED array 1.
  • the aspheric lens array 202 is located in the spherical lens array 201
  • the aspherical lenses are arranged in an octagonal array in one-to-one correspondence with the respective lenses on the spherical lens array 202.
  • the screw hole 12a, the screw hole 21a and the screw hole 22a can be fixed to each other by a screw, and one screw will screw the hole 12b.
  • the screw hole 21b and the screw hole 22b are fixed to each other, and one screw fixes the screw hole 12c, the screw hole 21c and the screw hole 22c to each other, and one screw has a screw hole 12d, a screw hole 21d and a screw hole.
  • the 22d is fixed to each other to finally fix the substrate 12, the collimating lens 21, and the collimating lens 22 to each other.
  • Compound eye lens 3 The upper lens unit array is also arranged in an octagonal array, and the area of the array on the optical path corresponds to or slightly larger than the area in which the aspheric lens array 202 on the collimating lens 22 is located, so that the fly-eye lens 3 The light emitted through the aspheric lens array 202 can be homogenized and the optical loss is minimized.
  • the compound eye lens 3 is substantially square and has screw holes 32a, 32b, 32c and 32d at the four corners. .
  • FIG. 6A is a schematic structural view of the bracket in the light-emitting device shown in FIG. 4 as viewed from the bottom side.
  • 6B is a schematic structural view of the bracket in the light-emitting device shown in FIG. 4 as viewed from the top side.
  • the bracket 6 is generally annular, the ring having a certain thickness and including opposing and abutting top side cavities 602 and bottom side cavities 601, and the bottom side open cavity 601 is larger than the top side open cavity 602 on the side of the top side open cavity 602 that is in contact with the bottom side open cavity 601, such that the bottom side open cavity 601 of the adjacent side is open except for the top side open cavity
  • the support table 63 is provided with four screw holes 62a, 62b, 62c and 62d.
  • Four screw holes on the compound eye lens 3 32a, 32b, 32c and 32d respectively correspond to the four screw holes 62a, 62b, 62c and 62d on the frame, and the screw holes 32a and the screws 32a are respectively used 62a, screw holes 32b and 62b, screw holes 32c and 62c, screw holes 32d and 62d are connected to fix the fly-eye lens 3 to the bottom side of the bracket 6 to open the cavity 601 Inside.
  • the fly-eye lens 3 can also be fixed to the bottom side of the bracket 6 by other means than screws.
  • the area of the bottom side opening 601 of the bracket 6 is also smaller than the area of the substrate 12, and is larger than the collimator 2 and the LED array 1 The area is such that the substrate to which the collimating device 2 is attached can enclose the collimating device 2 and the LED array 1 in the bottom side opening 601.
  • the frame 6 surrounding the bottom side opening 601 of the bracket 6 is provided with four screw holes 61a, 61b on the surface in contact with the substrate 12. 61c and 61d.
  • the screw holes 11a and 61a, the screw holes 11b and 61b, the screw holes 11c and 61c, the screw holes 11d and 61d can be respectively used with four screws.
  • the substrate 12 to which the collimating device 2 is fixed can also be bonded to the underside opening cavity by the adhesive 601. Instead of fixing parts such as screws.
  • the depth of the bottom side opening of the bracket 6 is a first predetermined depth, so that the fly-eye lens 3 is fixed to the bottom side opening of the bracket 6 601 After fixing the substrate 12 to which the LED array 1 and the collimator 2 are fixed to the bracket 6, the LED array 1, the collimator 2, and the fly-eye lens 3 The distance between any two adjacent between them is a predetermined pitch, wherein the predetermined pitch is a distance between two elements disposed on the optical path to achieve a predetermined effect.
  • the converging lens 4 is disposed in the top side cavity 602 of the bracket 6.
  • the top side open cavity 602 has a circular shape that is the same size as the shape of the converging lens 4.
  • a sidewall is provided on the side wall of the bottom side cavity 602. 64 surrounds the opening, and the condenser lens 4 It is placed in the top side opening 602 and is placed on the step 64.
  • a spiral path is provided on the outer wall of the top side open cavity 602.
  • the illuminating device further includes an annular cap 5 to enable the converging lens 4 to be covered on the top side
  • the 602 is tightened by the spiral pattern on the outer wall of the top side cavity 602 to fix the converging lens 4 and the bracket 6. Wherein the middle portion of the annular cap 5 corresponds to the converging lens 4 In order to cause the light beam concentrated by the converging lens 4 to exit.
  • the converging lens 4 may not be fixed to the top side open cavity 602 by means of a fixing member such as the annular cap 5 .
  • a fixing member such as the annular cap 5 .
  • the area is slightly larger than the area of the top side open cavity 602, and the converging lens 4 is directly bonded to the top side open cavity 602 by adhesive.
  • the area of the top side cavity 602 is larger than that of the converging lens 4
  • the area, but the area enclosed by the step 64 is smaller than the area of the converging lens 4, so that the converging lens 4 can also be fixed in the top side opening.
  • the depth of the top side open cavity 602 is a second predetermined depth, so that the fly-eye lens 3 is fixed to the bottom side opening of the bracket 6 601 Inner and rear and converging lens 4 fixed to top side open cavity 602
  • the spacing between the two is a predetermined spacing, wherein the predetermined spacing is the distance between the two lenses disposed on the optical path to meet a predetermined effect.
  • four bosses may be disposed on the periphery of the top side open cavity 602 for providing screw holes 65a, 65b, 65c and 65d to enable the illuminating device to be fixed into the optical path.
  • the solid state light emitting device array 1, the collimator lens array 2, and the fly-eye lens 3 The upper lens unit array may not be arranged in an octagon shape but other shapes such as a hexagon or a circle as long as the shapes of the three arrays match each other. Even in the case where the light utilization rate is not very high, the shapes of the three arrays may not match each other.
  • the collimating lens and the fly-eye lens 3 in the collimating device 2 may not be square but other shapes, as long as the area of the collimating device 2 and the solid-state light-emitting device array 1 is smaller than the bottom side of the bracket 6 601
  • the area of the substrate 12 is larger than the bottom side opening 601, so that the substrate 12 can seal the solid state light emitting device array 1 and the collimating device 2 together on the bottom side opening cavity 601.
  • the bottom side opening of the collimating device 2, the fly-eye lens 3 and the bracket 6 is 601
  • the shapes are matched to each other to make the structure of the light-emitting device more compact.
  • the number of screw holes in each optical element may not be four but other numbers, and as long as at least two screw holes are provided in each optical element, the optical elements can be fixed to each other.
  • FIG. 7 is an assembly method of the light-emitting device shown in FIG. The method includes the following steps:
  • Four screw holes can be arranged at four corners on the support table in the open cavity on the bottom side of the bracket, and four screw holes are also arranged on the four corners of the fly-eye lens, so that the four eye screws can be used for the fly eye lens respectively.
  • the four screw holes are in one-to-one correspondence with the four screw holes on the bracket and are fixed to each other.
  • the four corners on the support table in the open cavity on the bottom side of the bracket may not be provided with screw holes, but the fly eye lens may be adhered to the bottom side open cavity of the bracket by means of adhesive.
  • a screw hole is respectively arranged at four corners of each lens in the collimating device, and four screw holes are also arranged on the substrate, and four screws on each lens in the collimating device are respectively respectively passed by four screws
  • the holes are in one-to-one correspondence with the four screw holes on the substrate and are fixed to each other.
  • step S4 There is no order between the first three steps.

Abstract

Disclosed are an illuminating system and a light-emitting device thereof.The illuminating system comprises at least two light-emitting devices, wherein each light-emitting device comprises a solid-state light-emitting device array (1), a collimating device (2), a fly's-eye lens (3) and a converging lens (4) which are arranged in sequence on a light path.The light emitted by the fly's-eye lens (3) is mostly distributed at an angle of 0 degrees, and less light is distributed as the angle thereof increases from 0 degrees. The converging lens (4) collects light beams from the fly's-eye lens (3) and converts same into an area distribution, so that the average illumination intensity at a central region of a light spot formed on a target plane by the light beams is higher than that at edge regions of the light spot.The edge regions of the light spots formed on a target plane by light rays emitted from any two adjacent light-emitting devices are at least partially superposed between the central regions of the light spots.The present illuminating system can prevent the appearance of bright spots in light spots.

Description

照明系统及其相关发光装置 Lighting system and related lighting device 技术领域Technical field
本实用新型涉及照明及显示技术领域，特别是涉及一种照明系统及其相关发光装置。  The utility model relates to the technical field of illumination and display, in particular to an illumination system and related illumination device.
背景技术Background technique
在现有的舞台灯中，舞台灯在目标面上形成的光斑一般为各处照度均匀的圆形光斑，且该光斑一般为'硬光斑'，即光斑具有明显清楚的边缘。在需要大面积照明的场合中，常用的用法为将多台舞台灯在目标面上形成的多个圆形光斑拼接起来，形成一个各处照度均匀的大光斑。然而，由于每台舞台灯在目标面上形成的圆形光斑各处照度均匀，因此在拼接形成的大光斑中，两个圆形光斑重叠处的亮度比其他处亮度高出许多，形成亮斑；而两个光斑之间未重叠且未拼接处会出现暗区，亮度比其他处低处许多，导致目标面上大光斑的各处照度不均匀。 In the existing stage lights, the spot light formed on the target surface of the stage light is generally a circular spot with uniform illumination everywhere, and the spot is generally a 'hard spot', that is, the spot has a clearly clear edge. In the case where large-area illumination is required, a common usage is to splicing a plurality of circular spots formed on a target surface by a plurality of stage lights to form a large spot with uniform illumination everywhere. However, since the circular spot formed on the target surface of each stage lamp has uniform illumination everywhere, in the large spot formed by the splicing, the brightness of the overlap of the two circular spots is much higher than that of other places, forming a bright spot. There is a dark area between the two spots that are not overlapped and unspliced, and the brightness is much lower than other places, resulting in uneven illumination of the large spot on the target surface.
本实用新型主要解决的技术问题是提供一种避免光斑中出现亮斑的照明系统。 The technical problem mainly solved by the present invention is to provide an illumination system that avoids the occurrence of bright spots in the light spot.
本实用新型实施例提供 一种照明系统，包括至少两个发光装置，其中每个发光装置包括： An embodiment of the present invention provides an illumination system including at least two illumination devices, wherein each illumination device includes:
固态发光器件阵列，包括复数个固态发光器件，用于产生第一光束； An array of solid state light emitting devices comprising a plurality of solid state light emitting devices for generating a first light beam;
准直装置，用于对第一光束进行准直； a collimating device for collimating the first beam;
复眼透镜，包括由复数个透镜单元组合成的透镜单元阵列，用于对经所述准直装置准直的第一光束进行匀光，使得该复眼透镜出射的光中 0 度上分布的光分布最多，距离 0 度的距离越大的角度上的光分布越少； A fly-eye lens comprising an array of lens units combined by a plurality of lens units for homogenizing a first light beam collimated by the collimating device such that a light distribution distributed over 0 degrees in the light emitted by the fly-eye lens Maximum, distance 0 The greater the distance of the degree, the less the light distribution at the angle;
汇聚透镜，用于收集来自所述复眼透镜的第一光束并将该其角分布转换为面分布，使得该第一光束在目标平面上形成的光斑的中心区域的平均照度大于该光斑的边缘区域的平均照度； a converging lens for collecting a first light beam from the fly-eye lens and converting the angular distribution thereof into a surface distribution such that an average illuminance of a central region of the spot formed by the first light beam on the target plane is greater than an edge region of the light spot average illumination;
所述照明系统中，任意两个相邻的发光装置所发光在目标平面上形成的光斑的各自中心区域之间的边缘区域至少部分叠加。 In the illumination system, the edge regions between the respective central regions of the spots formed by the illumination of any two adjacent illumination devices on the target plane are at least partially superimposed.
优选地，每个发光装置在目标平面上形成的光斑的中心区域照度与边缘区域照度的比值大于等于 1.5 ： 1 且小于等于 3 ： 1 。 Preferably, the ratio of the illuminance of the central region of the spot formed on the target plane of each illuminating device to the illuminance of the edge region is greater than or equal to 1.5: 1 and less than or equal to 3 : 1 .
优选地，照明系统中，任意两个相邻的发光装置所发光在目标平面上形成的光斑的各自中心区域之间的边缘区域相互叠加，且其中该两个边缘区域中至少一个边缘区域与另一光斑的中心区域刚好相接。 Preferably, in the illumination system, the edge regions between the respective central regions of the spots formed by the illumination of any two adjacent illumination devices on the target plane are superimposed on each other, and wherein at least one of the two edge regions is different from the other The central area of a spot just meets.
本实用新型实施例还提供一种发光装置，包括： The embodiment of the present invention further provides a light emitting device, including:
固态发光器件阵列，包括复数个固态发光器件，用于产生第一光束； An array of solid state light emitting devices comprising a plurality of solid state light emitting devices for generating a first light beam;
准直装置，用于对第一光束进行准直； a collimating device for collimating the first beam;
复眼透镜，包括由复数个透镜单元组合成的透镜单元阵列，用于对经所述准直装置准直的第一光束进行匀光，使得该复眼透镜出射的光中 0 度上分布的光分布最多，距离 0 度的距离越大的角度上的光分布越少； A fly-eye lens comprising an array of lens units combined by a plurality of lens units for homogenizing a first light beam collimated by the collimating device such that a light distribution distributed over 0 degrees in the light emitted by the fly-eye lens Maximum, distance 0 The greater the distance of the degree, the less the light distribution at the angle;
汇聚透镜，用于收集来自所述复眼透镜的第一光束并将该其角分布转换为面分布，使得该第一光束在目标平面上形成的光斑的中心区域的平均照度大于该光斑的边缘区域的平均照度。 a converging lens for collecting a first light beam from the fly-eye lens and converting the angular distribution thereof into a surface distribution such that an average illuminance of a central region of the spot formed by the first light beam on the target plane is greater than an edge region of the light spot average illumination.
优选地，该发光装置还包括基板，所述固态发光器件阵列设置在该基板上； Preferably, the light emitting device further includes a substrate, and the solid state light emitting device array is disposed on the substrate;
所述准直装置包括准直镜片，该准直镜片上设有准直透镜阵列； The collimating device includes a collimating lens, and the collimating lens is provided with an array of collimating lenses;
所述发光装置还包括支架，该支架总体呈环状，该环状包括相对且相接的顶侧开腔和底侧开腔，且在顶侧开腔与底侧开腔相接的一面上该底侧开腔大于顶侧开腔，使得该相接的一面上底侧开腔内除顶侧开腔以外的区域存在支撑台； The illuminating device further includes a bracket, the bracket is generally annular, and the ring includes opposite and abutting top side open cavity and bottom side open cavity, and the bottom side open cavity is on a side of the top side open cavity and the bottom side open cavity The opening is larger than the top side, so that there is a support table in the area other than the top side open cavity in the upper side open cavity of the adjacent side;
该汇聚透镜固定在该支架的顶侧开腔内或者顶侧开腔上； The converging lens is fixed in the top side open cavity of the bracket or the top side open cavity;
所述复眼透镜小于底侧开腔且大于顶侧开腔，该复眼透镜固定在该底侧开腔内的支撑台上； The fly-eye lens is smaller than the bottom side open cavity and larger than the top side open cavity, and the fly-eye lens is fixed on the support table in the bottom side open cavity;
所述准直装置和固态发光器件阵列小于该底侧开腔，所述基板大于该底侧开腔，该准直装置固定在所述基板上，该基板与所述支架固定连接，以将所述固态发光器件阵列、准直镜片、复眼透镜一起封在该支架的底侧开腔内。 The alignment device and the solid state light emitting device array are smaller than the bottom side open cavity, the substrate is larger than the bottom side open cavity, the collimating device is fixed on the substrate, and the substrate is fixedly connected with the bracket to The light emitting device array, the collimating lens, and the fly-eye lens are enclosed together in the bottom side opening of the bracket.
优选地，所述基板、准直装置、所述复眼透镜上的边缘位置、所述支架上该底侧开腔的边缘以及所述支撑台均设有至少两个螺孔； Preferably, the substrate, the collimating device, the edge position on the fly-eye lens, the edge of the bottom side open cavity on the bracket, and the support table are each provided with at least two screw holes;
所述发光装置还包括复数个螺丝，用于将各元件之间以及和支架相互固定。 The illumination device also includes a plurality of screws for securing the components and the brackets to each other.
优选地，所述固态发光器件阵列、准直装置中的准直透镜阵列和所述复眼透镜上的透镜单元阵列的形状均一致，该准直装置、复眼透镜和所述支架的底侧开腔的形状均一致。 Preferably, the solid-state light-emitting device array, the collimating lens array in the collimating device, and the lens unit array on the fly-eye lens have the same shape, and the collimating device, the fly-eye lens, and the bottom side of the bracket are open-ended The shapes are the same.
优选地，所述汇聚透镜与所述支架的顶侧开腔的形状大小相互匹配，且该顶侧开腔的内壁上设有一个台阶环绕该顶侧开腔，外壁上设有螺旋纹路； Preferably, the converging lens is matched with the shape of the top side opening of the bracket, and the inner wall of the top side opening is provided with a step around the top side opening, and the outer wall is provided with a spiral pattern;
所述汇聚透镜架在所述台阶上； The converging lens holder is on the step;
发光装置还包括环形旋盖，以使得将所述汇聚透镜架在所述台阶上时该环形旋盖能通过盖在该顶侧开腔上来将该汇聚透镜固定住。 The light emitting device further includes an annular cap so that the annular cap can be secured to the converging lens by the cap on the top side opening when the converging lens is placed on the step.
优选地，所述准直装置包括第一准直镜片和第二准直镜片，其中第一准直镜片上包括球面透镜阵列，制成材料为玻璃；第二准直镜片上包括非球面透镜阵列，由塑料开模制成； Preferably, the collimating device comprises a first collimating lens and a second collimating lens, wherein the first collimating lens comprises a spherical lens array formed of glass; and the second collimating lens comprises an aspheric lens array , made of plastic mold opening;
第一准直镜片用于接收来自所述固态发光器件阵列的第一光束，第二准直镜片用于接收来自第一准直透镜镜片的第一光束。 A first collimating lens is for receiving a first beam from the array of solid state light emitting devices, and a second collimating lens is for receiving a first beam from the first collimating lens.
与现有技术相比，本实用新型包括如下有益效果： Compared with the prior art, the utility model includes the following beneficial effects:
在本实用新型中，发光装置中经准直装置准直的第一光束入射至复眼透镜后该第一光束被复数个透镜单元分割成复数个子光束，其中每个透镜单元可看成一个子光源，由于入射复眼透镜上的第一光束并不是严格的准直光束，因此每个子光源经汇聚透镜后在目标平面上形成的光斑并不是完全重叠而是部分重叠，而经过复眼透镜匀光后的第一光束中 0 度和 0 度左右的角分布比例最大，因此在目标平面上形成的光斑的中心区域照度大于边缘区域照度，这样，在需要大面积照明的场合中，照明系统可采用至少两个发光装置，且照明系统中任意两个相邻的发光装置所发光在目标平面上形成的光斑相互部分叠加，相比背景技术中的两个均匀光斑的叠加，使得该两个大光斑的叠加部分到该两个大光斑的中心区域的照度的过渡更加缓和，避免了两个相邻光斑的拼接处出现亮斑的情况。 In the present invention, after the first light beam collimated by the collimating device is incident on the fly-eye lens, the first light beam is divided into a plurality of sub-beams by a plurality of lens units, wherein each lens unit can be regarded as a sub-light source. Since the first beam on the incident fly-eye lens is not a strictly collimated beam, the spot formed on the target plane after each sub-light source passes through the converging lens is not completely overlapped but partially overlapped, and is homogenized by the fly-eye lens. In the first beam 0 degrees and 0 The angular distribution ratio of the left and right degrees is the largest, so the illumination of the central region of the spot formed on the target plane is greater than the illumination of the edge region, so that in the case where large-area illumination is required, the illumination system can employ at least two illumination devices, and in the illumination system The spots formed by the illumination of any two adjacent illuminators on the target plane are partially superimposed on each other, and the superposition of the two large spots to the two large spots is compared with the superposition of the two uniform spots in the background art. The transition of the illuminance in the central region is more moderate, avoiding the occurrence of bright spots at the splicing of two adjacent spots.
附图说明DRAWINGS
图 1 是 本实用新型的照明系统中发光装置的光路原理图； 1 is a schematic diagram of an optical path of a light-emitting device in an illumination system of the present invention;
图 2A 是透镜单元的入射光为 0 度的平行光束时的光路示意图； 2A is a schematic diagram of an optical path when a incident light of a lens unit is a parallel beam of 0 degrees;
图 2B 是透镜单元的入射光为大于 0 度的平行光束时的光路示意图； 2B is a schematic diagram of an optical path when the incident light of the lens unit is a parallel beam of more than 0 degrees;
图 2C 是透镜单元的入射光为小于 0 度的平行光束时的光路示意图； 2C is a schematic diagram of an optical path when the incident light of the lens unit is a parallel beam of less than 0 degrees;
图 3 是照明系统在目标平面上形成的四个光斑的叠加图； Figure 3 is an overlay of four spots formed by the illumination system on the target plane;
图 4 是本实用新型的照明系统中发光装置的一种结构示意图； 4 is a schematic structural view of a light-emitting device in the illumination system of the present invention;
图 5 是图 4 所示的发光装置的爆炸图； Figure 5 is an exploded view of the light-emitting device shown in Figure 4;
图 6A 是图 4 所示的发光装置中的支架从底侧看过去的结构示意图； 6A is a schematic structural view of the bracket in the light-emitting device shown in FIG. 4 as viewed from the bottom side;
图 6B 是图 4 所示的发光装置中的支架从顶侧看过去的结构示意图； 6B is a schematic structural view of the bracket in the light-emitting device shown in FIG. 4 viewed from the top side;
图 7 是图 4 所示的发光装置的一种组装方法。 Figure 7 is an assembly method of the light-emitting device shown in Figure 4.
本发明的实施方式 Embodiments of the invention
为了引用和清楚起见，下文中所提及到的某区域内照度均匀指的是该区域内各处的照度与该区域内的平均照度的差值小于该平均照度的 50% ，其中平均照度指的是一个区域内的总照度与该区域面积的比值。 For reference and clarity, the uniformity of illumination in a region referred to hereinafter means that the difference between the illuminance in the region and the average illuminance in the region is less than 50% of the average illuminance. , where the average illuminance refers to the ratio of the total illuminance in a region to the area of the region.
下面结合附图和实施方式对本实用新型实施例进行详细说明。 The embodiments of the present invention are described in detail below with reference to the accompanying drawings and embodiments.
请参阅图 1 ，图 1 是本实用新型的照明系统中发光装置的光路原理图。该发光装置包括固态发光器件阵列 1 、准直装置 2 、复眼透镜 3 和汇聚透镜 4 。 Please refer to FIG. 1. FIG. 1 is a schematic diagram of an optical path of a light-emitting device in an illumination system of the present invention. The light emitting device comprises an array of solid state light emitting devices 1. Collimation device 2, fly-eye lens 3 and converging lens 4 .
固态发光器件阵列 1 包括复数个固态发光器件 11 ，其中各固态发光器件 11 的发光轴相互平行且指向一致，使得固态发光器件阵列产生第一光束。在本实施例中，各固态发光器件 11 具体为白光 LED （ Light Emitting Diode ，发光二极管）。当然，在实际运用中，各固态发光器件 11 也可以是 LD （ Laser Diode ，激光二极管）或者其他固态发光器件。 The solid state light emitting device array 1 includes a plurality of solid state light emitting devices 11 , wherein each solid state light emitting device 11 The axes of illumination are parallel and directed to each other such that the array of solid state light emitting devices produces a first beam of light. In this embodiment, each solid state light emitting device 11 is specifically a white LED (Light Emitting) Diode, LED). Of course, in practical applications, each solid state light emitting device 11 can also be an LD (Laser Diode) or other solid state light emitting device.
在本实施例中，准直装置 2 具体为准直透镜阵列 2 。该准直透镜阵列 2 包括复数个准直透镜 22 ，其中准直透镜 22 与固态发光器件 11 一一对应，每个准直透镜 22 用于对与其对应的固态发光器件所发光进行准直。当然，在一些固态发光器件体积较小且排列比较紧密的场合，也可以采用一个准直透镜 22 对应至少两个固态发光器件阵列 11 的方案。在实际运用中，准直装置 2 也可以不是准直透镜阵列而是其他具有对光束进行准直功能的装置，例如反射曲面或者其他装置。 In the present embodiment, the collimating device 2 is specifically a collimating lens array 2. The collimating lens array 2 includes a plurality of collimating lenses 22 , wherein the collimating lens 22 is in one-to-one correspondence with the solid state light emitting device 11 , and each collimating lens 22 For collimating the illumination of the corresponding solid state light emitting device. Of course, in some cases where the solid state light emitting device is small in size and closely arranged, a collimating lens 22 may be used corresponding to at least two solid state light emitting device arrays. 11 program. In practice, the collimating device 2 may also be not a collimating lens array but other devices having a collimating function for the beam, such as a reflective curved surface or other device.
每个固态发光器件 11 所发光经与其对应的准直透镜 22 准直后并不是一束严格的平行光，而是具有一定发散角的光束，而该准直透镜的设计质量决定了该发散角的大小。具体举例来说， LED 所发光经准直透镜 22 准直后一般是一束发散角为 ± 10 到 ± 15 度的光束。 Each of the solid state light emitting devices 11 emits light through a collimating lens 22 corresponding thereto After collimation, it is not a strict parallel light, but a beam with a certain divergence angle, and the design quality of the collimating lens determines the size of the divergence angle. Specifically, the LED is illuminated by the collimating lens 22 After collimation, it is generally a beam with a divergence angle of ± 10 to ± 15 degrees.
复眼透镜 3 位于准直透镜阵列 2 出射第一光束的出射光路上，用于对经准直透镜阵列 2 准直的第一光束进行匀光。汇聚透镜 4 位于复眼透镜 3 出射第一光束的出射光路上，用于对经复眼透镜 3 匀光的第一束光进行收集并将其角分布转换为面分布，使得该第一光束在目标平面上形成一个光斑。 The fly-eye lens 3 is located on the outgoing light path of the collimating lens array 2 exiting the first light beam for the collimated lens array 2 The collimated first beam is homogenized. The converging lens 4 is located on the outgoing optical path of the fly-eye lens 3 to emit the first beam for the counter-eye lens 3 The first light of the homogenized light is collected and its angular distribution is converted into a surface distribution such that the first light beam forms a spot on the target plane.
复眼透镜 3 包括由复数个透镜单元组合成的透镜单元阵列。具有一定发散角的第一光束入射到该透镜单元阵列上，该透镜单元阵列将第一光束分割成复数个子光束，而每一个子光束经一个透镜单元作用并经汇聚透镜 4 收集而最终在目标平面上形成一个小光斑。因此，可将复眼透镜 3 上的复数个透镜单元看成是复数个子光源，该复数个子光源出射的光分别经汇聚透镜 4 汇聚后在目标平面上形成的复数个小光斑叠加成一个光斑。为表述清楚，下文中所描述的小光斑指的是由一个透镜单元的出射光在目标平面上形成的光斑，大光斑指的是复眼透镜 3 上全部透镜单元的出射光在目标平面上形成的小光斑组合而成的光斑。 Compound eye lens 3 A lens unit array composed of a plurality of lens units is included. A first light beam having a certain divergence angle is incident on the lens unit array, the lens unit array splits the first light beam into a plurality of sub-beams, and each of the sub-beams acts through a lens unit and passes through a converging lens 4 Collect and eventually form a small spot on the target plane. Therefore, the plurality of lens units on the fly-eye lens 3 can be regarded as a plurality of sub-light sources, and the light emitted from the plurality of sub-light sources respectively passes through the converging lens 4 After the convergence, a plurality of small spots formed on the target plane are superimposed into one spot. For the sake of clarity, the small spot described hereinafter refers to a spot formed by the outgoing light of one lens unit on the target plane, and the large spot refers to the fly-eye lens. 3 A spot where a combination of small spots formed by all the lens elements on the target plane forms a spot.
由于固态发光器件所发光并不是角分布均匀的，经过准直透镜阵列 2 准直后形成的光束也不是角分布均匀的，那么入射到每一个透镜单元上的子光束的角分布并不是完全一样，因此每个子光源出射后的光的角分布也不是完全一样，进而导致各个小光斑的位置也不是完全一样，因此，各个小光斑相互部分叠加而形成大光斑。 Since the solid-state light-emitting device emits light without uniform angular distribution, it passes through the collimating lens array 2 The beam formed after collimation is not evenly distributed, and the angular distribution of the sub-beams incident on each lens unit is not exactly the same, so the angular distribution of the light emitted by each sub-light source is not exactly the same, which leads to The positions of the individual small spots are not exactly the same, and therefore, the small spots are partially superimposed on each other to form a large spot.
同时，由于复眼透镜 3 上的透镜单元阵列将第一光束分割成多个子光束后再在目标平面上将该多个子光束形成的小光斑相互部分叠加，且各固态发光器件 11 均为白光 LED ，不同固态发光器件 11 所发光之间的颜色差距较小，因此固态发光器件阵列 2 中多个固态发光器件之间的颜色差异也被微分后再积分，进而能够在目标平面上形成颜色均匀的大光斑。 At the same time, due to the fly-eye lens 3 The upper lens unit divides the first beam into a plurality of sub-beams and then partially superimposes the small spots formed by the plurality of sub-beams on the target plane, and each solid-state light-emitting device 11 is a white LED, and different solid-state light-emitting devices 11 The color difference between the illuminations is small, so that the color difference between the plurality of solid-state light-emitting devices in the solid-state light-emitting device array 2 is also differentiated and then integrated, thereby forming a large spot of uniform color on the target plane.
入射到每一个透镜单元上子光束经该透镜单元的作用后角分布发生改变。具体以入射到其中一个透镜单元 301 上的子光束举例来说，透镜单元 301 为球面镜时，如图 2A 所示，图 2A 是透镜单元 301 的入射光为 0 度的平行光束时的光路示意图。该子光束中角度为 0 上的角分布（与透镜单元 301 的中心轴平行的光束）经透镜单元 301 后形成角度范围为 [ - θ0 ， + θ0] 上的角分布，其中 θ0 ＞ 0 。如图 2B 所示，图 2B 是透镜单元 301 的入射光为大于 0 度的平行光束时的光路示意图。该子光束中角度为 θ （ θ ＞ 0 ）上的光分布经过透镜单元后形成角度范围为 [θ1 ， θ2] 上的角分布，其中 0 ＜ - θ1 ＜ θ ， θ2 ＞ θ 。如图 2C 所示，图 2C 是透镜单元 301 的入射光为小于 0 度的平行光束时的光路示意图。该子光束中角度为 β （- α ≤ β ＜ 0 ）上 的光分布经过透镜单元后形成角度范围为 [θ3 ， θ4] 的角分布，其中 β ＜ θ3 ＜ 0 ， - β ＞ θ4 ＞ 0 。 The angular distribution of the sub-beams incident on each lens unit through the lens unit changes. Specifically, incident on one of the lens units 301 For example, when the lens unit 301 is a spherical mirror, as shown in FIG. 2A, FIG. 2A is a schematic diagram of an optical path when the incident light of the lens unit 301 is a parallel beam of 0 degrees. The angle in the sub-beam is The angular distribution on 0 (the beam parallel to the central axis of the lens unit 301) passes through the lens unit 301 to form an angular distribution over the range of [ - θ0 , + θ0] , where θ0 > 0 . As shown in Fig. 2B, Fig. 2B is a schematic view of the optical path when the incident light of the lens unit 301 is a parallel beam of more than 0 degrees. The angle in the sub-beam is θ ( θ > 0 The light distribution over the lens unit forms an angular distribution over an angular range [θ1 , θ2], where 0 < - θ1 < θ and θ2 > θ. As shown in Figure 2C, Figure 2C It is a schematic diagram of the optical path when the incident light of the lens unit 301 is a parallel beam of less than 0 degrees. The light distribution in the sub-beam with an angle of β (-α ≤ β < 0) is formed through the lens unit to form an angular range The angular distribution of [θ3 , θ4], where β < θ3 < 0 , - β > θ4 > 0 .
可以看出，每一个角度上的光分布经过透镜单元后的光分布都会包括 0 度以及 0 度左右的光分布。因此，经复眼透镜 3 中全部透镜单元作用后的光束的光分布统计积分后，出射的光束中 0 度上的光分布最多，距离 0 度的距离越大的角度越大光分布越少。而小角度的光分布的能量高，大角度的光分布的能量低，这样，经汇聚透镜 4 汇聚后该经复眼透镜 3 匀光的第一光束的角分布转换为面分布，形成一个中心区域的平均照度高于边缘区域的平均照度的大光斑，其中目标平面上所形成的大光斑的中心区域照度和边缘区域照度的比例为该中心区域上对应的角分布的能量与边缘区域上对应的角分布的能量的比例。 为了引用和清楚起见，本文中所提及到的大光斑的中心区域指的是：与该大光斑的中心的距离小于或等于该大光斑的口径的 1/X 的区域，其中 X ≥ 2 ， X 的具体取值可根据实际需要来确定；大光斑的边缘区域指的是除该大光斑的中心区域之外的区域。 It can be seen that the light distribution after each angle of light distribution through the lens unit will include 0 degrees and 0. The light distribution around the degree. Therefore, after the light distribution of the light beams applied by all the lens units in the fly-eye lens 3 is statistically integrated, the light distribution at 0 degrees in the emitted light beam is the most, and the distance is 0. The greater the distance of the degree, the smaller the light distribution. The energy of the light distribution at a small angle is high, and the energy of the light distribution at a large angle is low, so that the reticular lens 3 is concentrated by the condensing lens 4 The angular distribution of the first light beam is converted into a surface distribution to form a large spot whose central illuminance is higher than the average illuminance of the edge region, wherein the illuminance of the central region of the large spot formed on the target plane and the illuminance of the edge region The ratio is the ratio of the energy of the corresponding angular distribution on the central region to the energy of the corresponding angular distribution on the edge region. For reference and clarity, the central region of a large spot referred to herein refers to a region having a distance from the center of the large spot that is less than or equal to 1/X of the aperture of the large spot, where X ≥ 2, X The specific value can be determined according to actual needs; the edge area of the large spot refers to the area other than the central area of the large spot.
当然，当复眼透镜 3 中各透镜单元的表面也可以是非球面。这样，可以根据目标平面上所需要的大光斑的中心区域照度和边缘区域照度的比值来确定复眼透镜 3 的出射光中不同角度上的角分布，进而对各透镜单元的表面各处的曲率进行设计，使得复眼透镜 3 的出射光中不同角度上的光分布符合预定值。 Of course, when the fly eye lens 3 The surface of each of the lens units may also be an aspherical surface. In this way, the fly-eye lens can be determined according to the ratio of the central region illuminance of the large spot on the target plane and the illuminance of the edge region. The angular distribution at different angles of the outgoing light, and the curvature of the surface of each lens unit are designed such that the light distribution at different angles of the exiting light of the fly-eye lens 3 conforms to a predetermined value.
值得说明的是，由于在本实施例中在目标平面上要形成的大光斑并不是一个均匀光斑，因此复眼透镜 3 上各透镜单元的曲率可以不一样，或者透镜单元阵列中也可以同时包括球面透镜和非球面透镜。 It is worth noting that since the large spot to be formed on the target plane in this embodiment is not a uniform spot, the fly-eye lens 3 The curvature of each of the upper lens units may be different, or the spherical lens array and the aspherical lens may be simultaneously included in the lens unit array.
在实际运用中，还可以将准直装置 2 和复眼透镜 3 合并为一个整体。例如，在一片镜片上，其中一面上设有准直透镜阵列，另一面上设有复眼透镜上的透镜单元阵列。 In practice, the collimating device 2 and the fly-eye lens 3 can also be used. Consolidate into one. For example, on a lens, one side is provided with an array of collimating lenses, and the other side is provided with an array of lens elements on a fly-eye lens.
在本实施例中，照明系统包括至少两个以上所描述的发光装置，且任意相邻的两个发光装置在目标平面上形成的大光斑相互部分叠加以形成一个合成光斑。为 引用和清楚起见，本文描述中的合成光斑包括中间区域和边缘区域，其中中间区域指的是该合成光斑中每个大光斑的中心区域以及位于这些中心区域所围成的区域，边缘区域指的是合成光斑中除中间区域之外的区域。 In the present embodiment, the illumination system includes at least two of the above-described illumination devices, and the large spots formed on the target plane by any two adjacent illumination devices are partially superimposed to each other to form a composite spot. for For reference and clarity, the synthetic spot in the description herein includes an intermediate region and an edge region, wherein the intermediate region refers to a central region of each of the large spots in the composite spot and a region enclosed by the central regions, the edge region refers to Is the area of the synthetic spot other than the middle area.
具体举例来说，照明系统中包括四个发光装置。如图 3 所示，图 3 是照明系统在目标平面上形成的四个大光斑的叠加图。其中每个大光斑的中心区域和边缘区域的平均照度比为 2 ： 1 。这样，相邻两个大光斑的为各自中心区域之间的边缘区域相互叠加，且叠加后该两个边缘区域各自均与另一光斑的中心区域刚好衔接，使得叠加部分的照度与每个大光斑的中心区域的平均照度一致，进而使得该合成光斑的中间区域内照度均匀。当然，在一些对均匀度要求不是很高的场合中，该两个边缘区域也可以只是部分叠加，即叠加后该两个边缘区域不与另一光斑的中心区域衔接。 By way of specific example, four illumination devices are included in the illumination system. As shown in Figure 3, Figure 3 It is an overlay of four large spots formed by the illumination system on the target plane. The average illuminance ratio of the central and edge regions of each large spot is 2 : 1 . In this way, the edge regions between the adjacent central regions of the two adjacent large spots are superimposed on each other, and after the superposition, the two edge regions are each just connected to the central region of the other spot, so that the illuminance of the superimposed portion is large with each The average illuminance of the central region of the spot is uniform, thereby making the illuminance uniform in the middle region of the synthetic spot. Of course, in some occasions where the uniformity requirement is not very high, the two edge regions may also be only partially superposed, that is, the two edge regions do not engage with the central region of the other spot after the superposition.
在不考虑光利用率的场合中，也可以牺牲掉该合成光斑的边缘区域，只保留中间的照度均匀区域以使得照明系统在照明区域内形成均匀照度的光斑。在实际运用中，每个大光斑的中心区域和边缘区域的照度的比值也可以不是 2 ： 1 ，只要每个大光斑的中心区域的平均照度大于边缘区域的平均照度，那么在相互部分叠加时形成的合成光斑就不会出现亮斑或者暗区的情况。 In the case where light utilization is not considered, the edge region of the synthetic spot can also be sacrificed, leaving only the intermediate uniform illumination region to cause the illumination system to form a uniform illumination spot in the illumination region. In practice, the ratio of the illuminance between the central region and the edge region of each large spot may not be 2 : 1 , as long as the average illuminance of the central area of each large spot is larger than the average illuminance of the edge area, the synthetic spot formed when partially superimposed does not have bright spots or dark areas.
由于每个发光装置在目标平面上形成的大光斑的中心区域的平均照度大于边缘区域的平均照度，那么，相邻两个大光斑的边缘部分叠加，相比背景技术中的两个均匀光斑的叠加，本实施例中该两个大光斑的叠加部分到该两个大光斑的中心区域的照度的过渡更加缓和，避免了合成光斑中出现亮斑或者暗区的情况。 Since the average illuminance of the central region of the large spot formed by each illuminating device on the target plane is greater than the average illuminance of the edge region, the edge portions of the adjacent two large spots are superimposed compared to the two uniform spots in the background art. Superimposing, in this embodiment, the transition of the illuminance of the superimposed portion of the two large spots to the central region of the two large spots is more moderate, and the occurrence of bright spots or dark areas in the synthetic spot is avoided.
优选地，每个大光斑的中心区域和边缘区域的平均照度比大于等于 1.5 ： 1 且小于等于 3 ： 1 。各大光斑相互部分叠加时，该叠加部分为各大光斑的边缘部分，以使得各大光斑叠加成的合成光斑的中间区域的均匀度较好。 Preferably, the average illuminance ratio of the central region and the edge region of each large spot is greater than or equal to 1.5:1 and less than or equal to 3:1 . When the large spots are partially superimposed on each other, the superimposed portion is an edge portion of each of the large spots, so that the uniformity of the intermediate portion of the synthetic spots in which the large spots are superposed is good.
在本实施例中，固态发光器件阵列 1 也可以不是由同一种颜色的固态发光器件 11 组成，而是由至少两种颜色的固态发光器件 11 组成。具体举例来说，固态发光器件阵列 1 由 R(red ，红 ) 、 G （ green ，绿）、 B （ blue ，蓝）、 W （ white ，白）四种颜色的固态发光器件阵列 11 组成。在这种方案中，为使不同颜色固态发光器件所发光在目标平面上混光更加均匀，优选的，在固态发光器件阵列 1 中，以四种不同颜色固态发光器件为一组合单元，各组合单元相互邻接排列。在实际运用中时，可以将该四种不同颜色的 LED 封装在一起形成一个 LED 单元。 In this embodiment, the solid state light emitting device array 1 may not be a solid state light emitting device of the same color. The composition is composed of solid-state light-emitting devices 11 of at least two colors. Specifically, the solid state light emitting device array 1 is composed of R (red, red), G (green, green), B ( Blue, blue, W (white, white) four color solid state light emitting device array 11 Composition. In this solution, in order to make the light of the different color solid-state light-emitting devices illuminate more uniformly on the target plane, preferably, in the solid-state light-emitting device array 1 The four different color solid-state light-emitting devices are combined units, and the combined units are arranged adjacent to each other. In practical use, the four different color LEDs can be packaged together to form an LED unit.
但是，由于复眼透镜 3 中各透镜单元出射的光在目标平面上形成的小光斑为相互部分叠加而不是完全叠加，那么在叠加部分由于不同颜色光混合均匀，所以颜色均匀性较好。而在边缘部分处由于不是由全部小光斑叠加而来的，因此颜色均匀性较差。而在本实施例中，由于相邻两个发光装置在目标平面上形成的光斑相互叠加，因此，相邻两个光斑的边缘部分的叠加能在一定程度上改善该叠加部分的颜色均匀性。 However, due to the fly eye lens 3 The small spots formed by the light emitted from the respective lens units on the target plane are partially superimposed rather than completely superimposed, and then the color uniformity is better because the superimposed portions are uniformly mixed due to the light of different colors. However, since the edge portion is not superposed by all the small spots, the color uniformity is poor. In the present embodiment, since the spots formed by the adjacent two light-emitting devices on the target plane are superimposed on each other, the superposition of the edge portions of the adjacent two spots can improve the color uniformity of the superimposed portion to some extent.
请参阅图 4 和图 5 ，图 4 是本实用新型的照明系统中发光装置的一种结构示意图，图 5 是图 4 所示的发光装置的爆炸图。发光装置 400 包括固态发光器件阵列（图未示）、准直装置 2 、复眼透镜 3 、支架 6 、汇聚透镜 4 。 Please refer to FIG. 4 and FIG. 5. FIG. 4 is a schematic structural view of a light-emitting device in the illumination system of the present invention, and FIG. 5 is FIG. An exploded view of the illustrated illumination device. The light emitting device 400 includes an array of solid state light emitting devices (not shown), a collimating device 2, a fly eye lens 3, a holder 6, and a converging lens 4.
在本实施例中，固态发光器件阵列具体为 LED 阵列。各 LED 封装在基板 12 上并排列成阵列，该阵列呈八边形。各 LED 芯片可以先设在陶瓷基板或者其他散热热沉上后再设置到基板 12 上，或者也可以直接将 LED 芯片封装到基板 12 上。基板 12 呈长方形，在基板 12 上除开呈八边形的 LED 阵列 1 所位于的区域外，该基板 12 的四个角处各设有两个螺孔，分别为螺孔 11a 和 12a 、螺孔 11b 和 12b 、螺孔 11c 和 12c 、螺孔 11d 和 12d 。 In this embodiment, the solid state light emitting device array is specifically an LED array. Each LED is packaged on a substrate 12 They are arranged in an array and the array is octagonal. Each LED chip can be first placed on the ceramic substrate or other heat sink and then placed on the substrate 12, or the LED chip can be directly packaged onto the substrate. On. The substrate 12 has a rectangular shape. On the substrate 12, except for the area where the octagonal LED array 1 is located, the substrate 12 has two screw holes at the four corners, respectively, which are screw holes 11a and 12a, screw holes 11b and 12b, screw holes 11c and 12c, screw holes 11d and 12d.
在实际运用中，准直透镜阵列和 LED 阵列之间的距离很小，而 LED 阵列产生的热量较大，因此该准直透镜阵列优选采用玻璃制成以能够耐热。而出于成本考虑，玻璃透镜一般为球面透镜而不是非球面透镜，但球面透镜的准直效果并不是很理想，因此优选在球面透镜阵列的出射光路上再放置一片非球面透镜阵列，以使得准直效果更好，而该非球面透镜优选由塑料开模制成，以降低成本的同时兼顾准直效果。 In practice, the distance between the collimating lens array and the LED array is small, and the LED The array generates a large amount of heat, so the collimating lens array is preferably made of glass to be heat resistant. For cost reasons, the glass lens is generally a spherical lens rather than an aspheric lens, but the collimating effect of the spherical lens is not ideal. Therefore, it is preferable to place an aspherical lens array on the outgoing light path of the spherical lens array so that The collimating effect is better, and the aspherical lens is preferably made of a plastic mold to reduce the cost while taking into account the collimating effect.
因此，在本实施例中，准直装置 2 优选包括在光路上并列排列的球面透镜阵列 201 和非球面透镜阵列 202 。当然，在对准直效果要求不是很高的场合中，准直装置 2 也可以只包括一个准直透镜阵列。球面透镜阵列 201 中各球面透镜均设置到同一片准直镜片 21 上，非球面透镜阵列 202 中各非球面透镜也均设置到同一片准直镜片 22 上。球面透镜阵列 201 位于 LED 阵列 1 的出射光路上，且球面透镜阵列 201 中各透镜排列成一个呈八边形的阵列，且和 LED 阵列 1 中各 LED 一一对应。非球面透镜阵列 202 位于球面透镜阵列 201 的出射光路上，且各非球面透镜排列成一个呈八边形的阵列，和球面透镜阵列 202 上各个透镜一一对应。 Therefore, in the present embodiment, the collimating device 2 preferably includes a spherical lens array 201 and an aspheric lens array which are juxtaposed on the optical path. 202. Of course, in the case where the alignment effect is not very high, the collimating device 2 may also include only one collimating lens array. Each spherical lens in the spherical lens array 201 is disposed to the same collimating lens 21 Above, each aspherical lens in the aspherical lens array 202 is also disposed on the same piece of collimating lens 22. The spherical lens array 201 is located on the outgoing light path of the LED array 1, and the spherical lens array Each of the lenses 201 is arranged in an octagonal array and is in one-to-one correspondence with each of the LEDs in the LED array 1. The aspheric lens array 202 is located in the spherical lens array 201 The aspherical lenses are arranged in an octagonal array in one-to-one correspondence with the respective lenses on the spherical lens array 202.
准直镜片 21 和准直镜片 22 均大致呈方形，且准直镜片 21 的四个角处还设有四个螺孔 21a 、 21b 、 21c 和 21d ，准直镜片 22 的四个角处还设有四个螺孔 22a 、 22b 、 22c 和 22d 。准直镜片 22 上的四个螺孔、准直镜片 21 上的四个螺孔和基板 12 上的四个螺孔分别一一对应，使得在将基板 12 上的 LED 阵列、准直镜片 21 上的透镜阵列和准直镜片 22 上的透镜阵列均一一对应好以后，能够采用一个螺丝将螺孔 12a 、螺孔 21a 和螺孔 22a 相互固定，一个螺丝将螺孔 12b 、螺孔 21b 和螺孔 22b 相互固定，一个螺丝将螺孔 12c 、螺孔 21c 和螺孔 22c 相互固定，一个螺丝将螺孔 12d 、螺孔 21d 和螺孔 22d 相互固定，以最终将基板 12 、准直镜片 21 和准直镜片 22 相互固定。 The collimating lens 21 and the collimating lens 22 are both substantially square, and the four corners of the collimating lens 21 are further provided with four screw holes 21a. , 21b, 21c and 21d, four screw holes 22a, 22b, 22c and 22d are also arranged at the four corners of the collimating lens 22. Collimating lens 22 The upper four screw holes, the four screw holes on the collimating lens 21 and the four screw holes on the substrate 12 are respectively in one-to-one correspondence, so that the LED array and the collimating lens 21 on the substrate 12 are provided. After the lens array on the upper lens array and the collimating lens 22 are aligned one by one, the screw hole 12a, the screw hole 21a and the screw hole 22a can be fixed to each other by a screw, and one screw will screw the hole 12b. The screw hole 21b and the screw hole 22b are fixed to each other, and one screw fixes the screw hole 12c, the screw hole 21c and the screw hole 22c to each other, and one screw has a screw hole 12d, a screw hole 21d and a screw hole. The 22d is fixed to each other to finally fix the substrate 12, the collimating lens 21, and the collimating lens 22 to each other.
复眼透镜 3 上的透镜单元阵列也排列成一个呈八边形的阵列，且在光路上该阵列的区域对应于或稍大于准直镜片 22 上的非球面透镜阵列 202 所位于的区域，以使得复眼透镜 3 能够对经非球面透镜阵列 202 所出射的光匀光且光损耗最小。复眼透镜 3 大致呈方形，且四个角上设有螺孔 32a 、 32b 、 32c 和 32d 。 Compound eye lens 3 The upper lens unit array is also arranged in an octagonal array, and the area of the array on the optical path corresponds to or slightly larger than the area in which the aspheric lens array 202 on the collimating lens 22 is located, so that the fly-eye lens 3 The light emitted through the aspheric lens array 202 can be homogenized and the optical loss is minimized. The compound eye lens 3 is substantially square and has screw holes 32a, 32b, 32c and 32d at the four corners. .
如图 6A 和 6B 所示，图 6A 是图 4 所示的发光装置中的支架从底侧看过去的结构示意图，图 6B 是图 4 所示的发光装置中的支架从顶侧看过去的结构示意图。支架 6 总体上呈环状，该环状具有一定的厚度，且包括相对且相接的顶侧开腔 602 和底侧开腔 601 ， 且在顶侧开腔 602 与底侧开腔 601 相接的一面上该底侧开腔 601 大于顶侧开腔 602 ，使得该相接的一面上底侧开腔 601 内除顶侧开腔 602 以外的区域存在支撑台 63 。 6A and 6B, FIG. 6A is a schematic structural view of the bracket in the light-emitting device shown in FIG. 4 as viewed from the bottom side. 6B is a schematic structural view of the bracket in the light-emitting device shown in FIG. 4 as viewed from the top side. The bracket 6 is generally annular, the ring having a certain thickness and including opposing and abutting top side cavities 602 and bottom side cavities 601, and the bottom side open cavity 601 is larger than the top side open cavity 602 on the side of the top side open cavity 602 that is in contact with the bottom side open cavity 601, such that the bottom side open cavity 601 of the adjacent side is open except for the top side open cavity There is a support table 63 in the area other than 602.
在本实施例中，由于复眼透镜 3 呈方形，因此支架 6 的底侧开腔 601 优选呈和复眼透镜 3 形状一致的方形。而复眼透镜 3 的面积小于底侧开腔 601 且大于顶侧开腔 602 ，以使得复眼透镜 3 能固定到支撑台 63 上。 In the present embodiment, since the fly-eye lens 3 has a square shape, the bottom side open cavity 601 of the holder 6 is preferably a compound eye lens 3 A square with the same shape. The area of the fly-eye lens 3 is smaller than the bottom side opening 601 and larger than the top side opening 602, so that the fly-eye lens 3 can be fixed to the support table 63.
支撑台 63 上设有四个螺孔 62a 、 62b 、 62c 和 62d 。复眼透镜 3 上的四个螺孔 32a 、 32b 、 32c 和 32d 分别和该架体上的四个螺孔 62a 、 62b 、 62c 和 62d 一一对应，且用四个螺丝分别将螺孔 32a 和 62a 、螺孔 32b 和 62b 、螺孔 32c 和 62c 、螺孔 32d 和 62d 连接起来，以将复眼透镜 3 固定到支架 6 的底侧开腔 601 内。 The support table 63 is provided with four screw holes 62a, 62b, 62c and 62d. Four screw holes on the compound eye lens 3 32a, 32b, 32c and 32d respectively correspond to the four screw holes 62a, 62b, 62c and 62d on the frame, and the screw holes 32a and the screws 32a are respectively used 62a, screw holes 32b and 62b, screw holes 32c and 62c, screw holes 32d and 62d are connected to fix the fly-eye lens 3 to the bottom side of the bracket 6 to open the cavity 601 Inside.
当然，在实际运用中，复眼透镜 3 也可以通过其他方式而不是螺丝来固定到支架 6 的底侧开腔 601 内，例如，可以通过粘胶粘接到支撑台 63 上，相对应的，支撑台 63 和复眼透镜 3 上就可以不用设置四个螺孔。 Of course, in practice, the fly-eye lens 3 can also be fixed to the bottom side of the bracket 6 by other means than screws. For example, it is possible to bond to the support table 63 by means of an adhesive, and correspondingly, the support table 63 and the fly-eye lens 3 do not need to be provided with four screw holes.
支架 6 的底侧开腔 601 面积还小于基板 12 的面积，且大于准直装置 2 和 LED 阵列 1 的面积，以使得固定有准直装置 2 的基板能够将该准直装置 2 和 LED 阵列 1 封在底侧开腔 601 内。 The area of the bottom side opening 601 of the bracket 6 is also smaller than the area of the substrate 12, and is larger than the collimator 2 and the LED array 1 The area is such that the substrate to which the collimating device 2 is attached can enclose the collimating device 2 and the LED array 1 in the bottom side opening 601.
支架 6 上环绕该底侧开腔 601 的架体与基板 12 接触的面上设有四个螺孔 61a 、 61b 、 61c 和 61d 。这样，可以采用四个螺丝分别将螺孔 11a 和 61a 、螺孔 11b 和 61b 、螺孔 11c 和 61c 、螺孔 11d 和 61d 连接起来，以将基板 12 固定到支架 6 的底侧开腔 601 上，其中基板 12 设有 LED 阵列的一侧朝向该底侧开腔 601 。 The frame 6 surrounding the bottom side opening 601 of the bracket 6 is provided with four screw holes 61a, 61b on the surface in contact with the substrate 12. 61c and 61d. Thus, the screw holes 11a and 61a, the screw holes 11b and 61b, the screw holes 11c and 61c, the screw holes 11d and 61d can be respectively used with four screws. Connected to secure the substrate 12 to the bottom side opening 601 of the holder 6, wherein the side of the substrate 12 on which the array of LEDs is disposed opens the cavity 601 toward the bottom side.
当然，在实际运用中，也可以通过粘胶将固定有准直装置 2 的基板 12 粘接到底侧开腔 601 上，而不是采用螺丝这样的固定件。 Of course, in practical use, the substrate 12 to which the collimating device 2 is fixed can also be bonded to the underside opening cavity by the adhesive 601. Instead of fixing parts such as screws.
支架 6 的底侧开腔的深度为第一预定深度，使得将复眼透镜 3 固定到支架 6 的底侧开腔 601 内后再将固定有 LED 阵列 1 和准直装置 2 的基板 12 固定到支架 6 上后， LED 阵列 1 、准直装置 2 和复眼透镜 3 之间任意相邻两个之间的距离为预定间距，其中该预定间距为光路上达到预定效果而设置的两个元件之间的距离。 The depth of the bottom side opening of the bracket 6 is a first predetermined depth, so that the fly-eye lens 3 is fixed to the bottom side opening of the bracket 6 601 After fixing the substrate 12 to which the LED array 1 and the collimator 2 are fixed to the bracket 6, the LED array 1, the collimator 2, and the fly-eye lens 3 The distance between any two adjacent between them is a predetermined pitch, wherein the predetermined pitch is a distance between two elements disposed on the optical path to achieve a predetermined effect.
汇聚透镜 4 设置在支架 6 的顶侧开腔 602 内。在本实施例中，由于汇聚透镜 4 呈圆形，因此顶侧开腔 602 呈和汇聚透镜 4 的形状大小一致的圆形。底侧开腔 602 内的侧壁上设有一个台阶 64 环绕该开口，汇聚透镜 4 放置在该顶侧开腔 602 内并架在台阶 64 上。顶侧开腔 602 的外壁上设置有螺旋纹路。发光装置还包括环形旋盖 5 ，以能够将汇聚透镜 4 盖在顶侧开腔 602 上，并通过与顶侧开腔 602 的外壁上的螺旋纹路配合而扭紧，进而将汇聚透镜 4 与支架 6 固定。其中该环形旋盖 5 的中间区域对应汇聚透镜 4 ，以使得经汇聚透镜 4 汇聚的光束出射。 The converging lens 4 is disposed in the top side cavity 602 of the bracket 6. In this embodiment, due to the converging lens 4 It is rounded, so the top side open cavity 602 has a circular shape that is the same size as the shape of the converging lens 4. A sidewall is provided on the side wall of the bottom side cavity 602. 64 surrounds the opening, and the condenser lens 4 It is placed in the top side opening 602 and is placed on the step 64. A spiral path is provided on the outer wall of the top side open cavity 602. The illuminating device further includes an annular cap 5 to enable the converging lens 4 to be covered on the top side The 602 is tightened by the spiral pattern on the outer wall of the top side cavity 602 to fix the converging lens 4 and the bracket 6. Wherein the middle portion of the annular cap 5 corresponds to the converging lens 4 In order to cause the light beam concentrated by the converging lens 4 to exit.
当然，在实际运用中，也可以不是通过环形旋盖 5 这样的固定件将汇聚透镜 4 固定到顶侧开腔 602 上，而是其他方式固定，例如通过粘胶将汇聚透镜 4 架到台阶 64 上后直接粘接到顶侧开腔 602 内，或者还可以去掉台阶 64 ，而汇聚透镜 4 的面积稍大于顶侧开腔 602 的面积，汇聚透镜 4 直接通过粘胶粘接到顶侧开腔 602 上。或者，还可以是顶侧开腔 602 的面积大于汇聚透镜 4 的面积，但台阶 64 所围成的面积小于汇聚透镜 4 的面积，这样也可以将汇聚透镜 4 固定在顶侧开腔内。 Of course, in practical use, the converging lens 4 may not be fixed to the top side open cavity 602 by means of a fixing member such as the annular cap 5 . Upper, but fixed in other ways, for example, by bonding the converging lens 4 to the step 64 by adhesive, directly bonding into the top side cavity 602, or removing the step 64 and collecting the lens 4 The area is slightly larger than the area of the top side open cavity 602, and the converging lens 4 is directly bonded to the top side open cavity 602 by adhesive. Alternatively, it is also possible that the area of the top side cavity 602 is larger than that of the converging lens 4 The area, but the area enclosed by the step 64 is smaller than the area of the converging lens 4, so that the converging lens 4 can also be fixed in the top side opening.
顶侧开腔 602 的深度为第二预定深度，使得复眼透镜 3 固定到支架 6 的底侧开腔 601 内后和汇聚透镜 4 固定到顶侧开腔 602 后该两者之间的间距为预定间距，其中该预定间距为光路上为符合预定效果而设置的该两个透镜之间的距离。这样，组装成的发光装置结构紧凑，且方便组装。 The depth of the top side open cavity 602 is a second predetermined depth, so that the fly-eye lens 3 is fixed to the bottom side opening of the bracket 6 601 Inner and rear and converging lens 4 fixed to top side open cavity 602 The spacing between the two is a predetermined spacing, wherein the predetermined spacing is the distance between the two lenses disposed on the optical path to meet a predetermined effect. Thus, the assembled illuminating device is compact in structure and easy to assemble.
在该发光装置中，还可以在顶侧开腔 602 的外围设置四个凸台，用于设有螺孔 65a 、 65b 、 65c 和 65d ，以使得能够将该发光装置固定到光路中。 In the illuminating device, four bosses may be disposed on the periphery of the top side open cavity 602 for providing screw holes 65a, 65b, 65c and 65d to enable the illuminating device to be fixed into the optical path.
在本实施例中，固态发光器件阵列 1 、准直透镜阵列 2 和复眼透镜 3 上的透镜单元阵列也可以不是排列成八边形而是其他形状，例如六边形或者圆形，只要该三种阵列的形状相互匹配即可。甚至，在对光利用率要求不是很高的场合中，该三种阵列的形状也可以不相互匹配。而基板 12 、准直装置 2 中的准直镜片和复眼透镜 3 也可以不呈方形而是其他形状，只要准直装置 2 和固态发光器件阵列 1 的面积小于支架 6 的底侧开腔 601 的面积，且基板 12 的面积大于底侧开腔 601 ，使得基板 12 能将 固态发光器件阵列 1 、准直装置 2 一起封在底侧开腔 601 内即可。优选地，准直装置 2 、复眼透镜 3 和支架 6 的底侧开腔 601 的形状均相互匹配，以使得发光装置的结构更加紧凑。每个光学元件上的螺孔也可以不是四个而是其他数目，只要每个光学元件上设置有至少两个螺孔，就能够将这些光学元件相互固定。 In the present embodiment, the solid state light emitting device array 1, the collimator lens array 2, and the fly-eye lens 3 The upper lens unit array may not be arranged in an octagon shape but other shapes such as a hexagon or a circle as long as the shapes of the three arrays match each other. Even in the case where the light utilization rate is not very high, the shapes of the three arrays may not match each other. Substrate 12, the collimating lens and the fly-eye lens 3 in the collimating device 2 may not be square but other shapes, as long as the area of the collimating device 2 and the solid-state light-emitting device array 1 is smaller than the bottom side of the bracket 6 601 The area of the substrate 12 is larger than the bottom side opening 601, so that the substrate 12 can seal the solid state light emitting device array 1 and the collimating device 2 together on the bottom side opening cavity 601. Just inside. Preferably, the bottom side opening of the collimating device 2, the fly-eye lens 3 and the bracket 6 is 601 The shapes are matched to each other to make the structure of the light-emitting device more compact. The number of screw holes in each optical element may not be four but other numbers, and as long as at least two screw holes are provided in each optical element, the optical elements can be fixed to each other.
请参阅图 7 ，图 7 是图 4 所示的发光装置的一种组装方法。该方法包括以下步骤： Please refer to FIG. 7, which is an assembly method of the light-emitting device shown in FIG. The method includes the following steps:
S1 ：将复眼透镜固定至支架的底侧开腔内的支撑台上。 S1: Fixing the fly-eye lens to the support table in the bottom side cavity of the bracket.
可在支架的底侧开腔内的支撑台上四个角处设有四个螺孔，而复眼透镜的四个角上也设有四个螺孔，因此可通过四个螺丝分别将复眼透镜的四个螺孔与支架上的该四个螺孔一一对应好并相互固定住。 Four screw holes can be arranged at four corners on the support table in the open cavity on the bottom side of the bracket, and four screw holes are also arranged on the four corners of the fly-eye lens, so that the four eye screws can be used for the fly eye lens respectively. The four screw holes are in one-to-one correspondence with the four screw holes on the bracket and are fixed to each other.
在实际运用中，也可以采用其他的固定方式。例如，支架底侧开腔内的支撑台上的四个角处也可以不设有螺孔，而是通过粘胶的方式将复眼透镜粘接到支架的底侧开腔内。 In practice, other fixed methods can also be used. For example, the four corners on the support table in the open cavity on the bottom side of the bracket may not be provided with screw holes, but the fly eye lens may be adhered to the bottom side open cavity of the bracket by means of adhesive.
S2 ：将准直装置和基板相互固定，其中该准直装置位于该基板设有固态发光器件阵列的一侧。 S2: fixing the collimating device and the substrate to each other, wherein the collimating device is located on a side of the substrate where the solid-state light emitting device array is disposed.
在准直装置中的各个镜片上的四个角上分别设有一个螺孔，而基板上也设有四个螺孔，通过四个螺丝分别将准直装置中每个镜片上的四个螺孔与基板上的四个螺孔一一对应并相互固定住。 A screw hole is respectively arranged at four corners of each lens in the collimating device, and four screw holes are also arranged on the substrate, and four screws on each lens in the collimating device are respectively respectively passed by four screws The holes are in one-to-one correspondence with the four screw holes on the substrate and are fixed to each other.
S3 ：将固定有准直装置的基板固定到固定有复眼透镜的支架的底侧开腔上，其中该基板设有固态发光器件阵列的一侧朝向该底侧开腔，使得该基板将固态发光器件阵列、准直装置、所述复眼透镜一起封在该支架的底侧开腔内。 S3 Fixing the substrate to which the collimating device is fixed to the bottom side opening of the bracket to which the fly-eye lens is fixed, wherein a side of the substrate provided with the array of solid-state light-emitting devices is opened toward the bottom side, so that the substrate will be an array of solid-state light-emitting devices, The collimating device and the fly-eye lens are enclosed together in the open side cavity of the bracket.
可在固定有准直装置的基板上再设置四个螺孔，并在支架上环绕底侧开腔的架体上与基板相接触的面上设置四个螺孔，并通过螺丝分别将该架体上的四个螺孔和基板上的四个螺孔一一对应并相互固定住。 Four screw holes may be further disposed on the substrate fixed with the collimating device, and four screw holes are disposed on the surface of the frame that surrounds the bottom side open cavity on the frame, and the frame body is respectively fixed by screws The upper four screw holes are in one-to-one correspondence with the four screw holes on the substrate and are fixed to each other.
当然，在实际运用中也可以采用其他固定方式。例如，基板上和该架体上均无需设置螺孔，而是直接将固定有准直装置的基板直接粘接到支架上环绕底侧开腔的架体上。 Of course, other fixed methods can also be used in practical applications. For example, there is no need to provide a screw hole on the substrate and the frame body, but directly the substrate to which the collimating device is fixed is directly bonded to the frame body surrounding the bottom side open cavity.
S4 ：将汇聚透镜固定到所述支架的顶侧开腔上。 S4: Fixing the converging lens to the top side open cavity of the bracket.
在顶侧开腔内的侧壁上设有一个台阶环绕该顶侧开腔，将汇聚透镜放置在该顶侧开腔内并架在台阶上。顶侧开腔的外壁上设置有螺旋纹路。再采用一个环形旋盖将汇聚透镜盖在顶侧开腔上，并通过与顶侧开腔的外壁上的螺旋纹路配合而扭紧，以将汇聚透镜固定住。其中该环形旋盖的中间区域对应汇聚透镜，以使得经汇聚透镜的汇聚的光束出射。 A step is provided on the side wall in the top side cavity to surround the top side cavity, and the converging lens is placed in the top side cavity and is placed on the step. A spiral line is disposed on the outer wall of the top side open cavity. A concentric lens cap is then used to cover the converging lens on the top side opening and is tightened by mating with the spiral pattern on the outer wall of the top side opening to secure the converging lens. Wherein the intermediate portion of the annular cap corresponds to the converging lens such that the concentrated beam passing through the converging lens exits.
容易理解的是，在以上步骤中，步骤 S1 和 S2 之间并无先后顺序，步骤 S4 和前三个步骤之间也无先后顺序。 It is easy to understand that in the above steps, there is no order between steps S1 and S2, step S4 There is no order between the first three steps.
在实际运用中，也可以采用其他方式固定方式。例如，顶侧开腔内无需设计台阶，外壁也无需设计螺旋纹路，而是直接将汇聚透镜粘接到顶侧开腔上。 In actual use, other methods can also be used. For example, there is no need to design a step in the top side open cavity, and the outer wall does not need to design a spiral track, but directly joins the converging lens to the top side open cavity.
本说明书中各个实施例采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似部分互相参见即可。 The various embodiments in the present specification are described in a progressive manner, and each embodiment focuses on differences from other embodiments, and the same similar parts between the various embodiments may be referred to each other.
以上所述仅为本实用新型的实施方式，并非因此限制本实用新型的专利范围，凡是利用本实用新型说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本实用新型的专利保护范围内。 The above is only the embodiment of the present invention, and thus does not limit the scope of the patent of the present invention. Any equivalent structure or equivalent process transformation made by using the description of the utility model and the drawings, or directly or indirectly applied to other The related technical fields are all included in the scope of patent protection of the present invention.

Claims (9)

  1. 一种照明系统，其特征在于，包括至少两个发光装置，其中每个发光装置包括： An illumination system comprising at least two illumination devices, wherein each illumination device comprises:
    固态发光器件阵列，包括复数个固态发光器件，用于产生第一光束；An array of solid state light emitting devices comprising a plurality of solid state light emitting devices for generating a first light beam;
    准直装置，用于对第一光束进行准直；a collimating device for collimating the first beam;
    复眼透镜，包括由复数个透镜单元组合成的透镜单元阵列，用于对经所述准直装置准直的第一光束进行匀光，使得该复眼透镜出射的光中 0 度上分布的光分布最多，距离 0 度的距离越大的角度上的光分布越少；a fly-eye lens comprising an array of lens units combined by a plurality of lens units for homogenizing a first light beam collimated by the collimating device such that the complex eye lens emits light The distribution of light at 0 degrees is the most distributed, and the distribution of light at an angle greater than 0 degrees is less;
    汇聚透镜，用于收集来自所述复眼透镜的第一光束并将该其角分布转换为面分布，使得该第一光束在目标平面上形成的光斑的中心区域的平均照度大于该光斑的边缘区域的平均照度；a converging lens for collecting a first light beam from the fly-eye lens and converting the angular distribution thereof into a surface distribution such that an average illuminance of a central region of the spot formed by the first light beam on the target plane is greater than an edge region of the light spot average illumination;
    所述照明系统中，任意两个相邻的发光装置所发光在目标平面上形成的光斑的各自中心区域之间的边缘区域至少部分叠加。 In the illumination system, the edge regions between the respective central regions of the spots formed by the illumination of any two adjacent illumination devices on the target plane are at least partially superimposed.
  2. 根据权利要求 1 所述的照明系统，其特征在于，所述每个发光装置在目标平面上形成的光斑的中心区域照度与边缘区域照度的比值大于等于 1.5 ： 1 且小于等于 3 ： 1 。 According to claim 1 The illumination system is characterized in that the ratio of the central region illuminance of the spot formed on the target plane of each of the light-emitting devices to the edge region illuminance is greater than or equal to 1.5:1 and less than or equal to 3:1.
  3. 根据权利要求 1 所述的照明系统，其特征在于，所述照明系统中，任意两个相邻的发光装置所发光在目标平面上形成的光斑的各自中心区域之间的边缘区域相互叠加，且其中该两个边缘区域中至少一个边缘区域与另一光斑的中心区域刚好相接。According to claim 1 The illumination system is characterized in that, in the illumination system, edge regions between respective central regions of the spots formed by the illumination of any two adjacent illumination devices on the target plane are superimposed on each other, and wherein the two At least one edge region in the edge region is just in contact with the central region of the other spot.
  4. 一种发光装置，其特征在于，包括：A light emitting device, comprising:
    固态发光器件阵列，包括复数个固态发光器件，用于产生第一光束；An array of solid state light emitting devices comprising a plurality of solid state light emitting devices for generating a first light beam;
    准直装置，用于对第一光束进行准直；a collimating device for collimating the first beam;
    复眼透镜，包括由复数个透镜单元组合成的透镜单元阵列，用于对经所述准直装置准直的第一光束进行匀光，使得该复眼透镜出射的光中 0 度上分布的光分布最多，距离 0 度的距离越大的角度上的光分布越少；a fly-eye lens comprising an array of lens units combined by a plurality of lens units for homogenizing a first light beam collimated by the collimating device such that the complex eye lens emits light The distribution of light at 0 degrees is the most distributed, and the distribution of light at an angle greater than 0 degrees is less;
    汇聚透镜，用于收集来自所述复眼透镜的第一光束并将该其角分布转换为面分布，使得该第一光束在目标平面上形成的光斑的中心区域的平均照度大于该光斑的边缘区域的平均照度。a converging lens for collecting a first light beam from the fly-eye lens and converting the angular distribution thereof into a surface distribution such that an average illuminance of a central region of the spot formed by the first light beam on the target plane is greater than an edge region of the light spot average illumination.
  5. 根据权利要求 4 所述的发光装置，其特征在于，该发光装置还包括基板，所述固态发光器件阵列设置在该基板上；According to claim 4 The illuminating device further includes a substrate, and the solid state light emitting device array is disposed on the substrate;
    所述准直装置包括准直镜片，该准直镜片上设有准直透镜阵列；The collimating device includes a collimating lens, and the collimating lens is provided with an array of collimating lenses;
    所述发光装置还包括支架，该支架总体呈环状，该环状包括相对且相接的顶侧开腔和底侧开腔，且在顶侧开腔与底侧开腔相接的一面上该底侧开腔大于顶侧开腔，使得该相接的一面上底侧开腔内除顶侧开腔以外的区域存在支撑台；The illuminating device further includes a bracket, the bracket is generally annular, and the ring includes opposite and abutting top side open cavity and bottom side open cavity, and the bottom side open cavity is on a side of the top side open cavity and the bottom side open cavity The opening is larger than the top side, so that there is a support table in the area other than the top side open cavity in the upper side open cavity of the adjacent side;
    该汇聚透镜固定在该支架的顶侧开腔内或者顶侧开腔上；The converging lens is fixed in the top side open cavity of the bracket or the top side open cavity;
    所述复眼透镜小于底侧开腔且大于顶侧开腔，该复眼透镜固定在该底侧开腔内的支撑台上；The fly-eye lens is smaller than the bottom side open cavity and larger than the top side open cavity, and the fly-eye lens is fixed on the support table in the bottom side open cavity;
    所述准直装置和固态发光器件阵列小于该底侧开腔，所述基板大于该底侧开腔，该准直装置固定在所述基板上，该基板与所述支架固定连接，以将所述固态发光器件阵列、准直镜片、复眼透镜一起封在该支架的底侧开腔内。The alignment device and the solid state light emitting device array are smaller than the bottom side open cavity, the substrate is larger than the bottom side open cavity, the collimating device is fixed on the substrate, and the substrate is fixedly connected with the bracket to The light emitting device array, the collimating lens, and the fly-eye lens are enclosed together in the bottom side opening of the bracket.
  6. 根据权利要求 5 所述的发光装置，其特征在于，A lighting device according to claim 5, wherein
    所述基板、准直装置、所述复眼透镜上的边缘位置、所述支架上该底侧开腔的边缘以及所述支撑台均设有至少两个螺孔；The substrate, the collimating device, the edge position on the fly-eye lens, the edge of the bottom side open cavity on the bracket, and the support table are each provided with at least two screw holes;
    所述发光装置还包括复数个螺丝，用于将各元件之间以及和支架相互固定。 The illumination device also includes a plurality of screws for securing the components and the brackets to each other.
  7. 根据权利要求 5 所述的发光装置，其特征在于，所述固态发光器件阵列、准直装置中的准直透镜阵列和所述复眼透镜上的透镜单元阵列的形状均一致，该准直装置、复眼透镜和所述支架的底侧开腔的形状均一致。According to claim 5 The light emitting device is characterized in that the solid-state light-emitting device array, the collimating lens array in the collimating device, and the lens unit array on the fly-eye lens have the same shape, and the collimating device, the fly-eye lens, and the The shape of the bottom side opening of the stent is uniform.
  8. 根据权利要求 5 所述的发光装置，其特征在于，所述汇聚透镜与所述支架的顶侧开腔的形状大小相互匹配，且该顶侧开腔的内壁上设有一个台阶环绕该顶侧开腔，外壁上设有螺旋纹路；According to claim 5 The illuminating device is characterized in that the converging lens and the top side opening of the bracket are matched in shape, and the inner wall of the top side opening is provided with a step surrounding the top side opening cavity, and the outer wall is provided with Spiral line
    所述汇聚透镜架在所述台阶上；The converging lens holder is on the step;
    发光装置还包括环形旋盖，以使得将所述汇聚透镜架在所述台阶上时该环形旋盖能通过盖在该顶侧开腔上来将该汇聚透镜固定住。The light emitting device further includes an annular cap so that the annular cap can be secured to the converging lens by the cap on the top side opening when the converging lens is placed on the step.
  9. 根据权利要求 5 所述的发光装置，其特征在于，所述准直装置包括第一准直镜片和第二准直镜片，其中第一准直镜片上包括球面透镜阵列，制成材料为玻璃；第二准直镜片上包括非球面透镜阵列，由塑料开模制成；According to claim 5 The illuminating device is characterized in that the collimating device comprises a first collimating lens and a second collimating lens, wherein the first collimating lens comprises a spherical lens array, the material is made of glass; the second collimating The lens comprises an aspherical lens array, which is made of plastic mold opening;
    第一准直镜片用于接收来自所述固态发光器件阵列的第一光束，第二准直镜片用于接收来自第一准直透镜镜片的第一光束。A first collimating lens is for receiving a first beam from the array of solid state light emitting devices, and a second collimating lens is for receiving a first beam from the first collimating lens.
PCT/CN2014/070935 2013-01-21 2014-01-21 Illuminating system and related light-emitting device thereof WO2014111058A1 (en)

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