Lamp
By employing light-collecting components and aspherical lens reflector components in LED lighting fixtures, the problem of achieving high collimation and high penetration in traditional designs has been solved, resulting in a parallel beam with high collimation and strong penetration, suitable for large-scale film and television equipment.
Patent Information
- Application Number
- CN202520474433.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-17
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-03-17
AI Technical Summary
Traditional LED lighting fixtures struggle to achieve parallel beams with high collimation and high penetration, especially as LED chip power increases and the luminous surface expands, making it difficult for traditional reflector and Fresnel lens designs to meet the requirements.
A light-collecting component is used to gather and collimate the light emitted from the light source. The light is then focused by a focusing lens onto a primary reflector, and then reflected by the primary reflector to a secondary reflector to form a parallel beam. Aspherical lenses and reflector components are used to improve the collimation and penetration of the beam.
It achieves a parallel beam with high collimation and strong penetration, suitable for large-scale film and television equipment, improving illumination and light collection efficiency, and reducing light flux loss.
Smart Images
Figure CN223909337U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to optical system technical field especially relates to a lamp. BACKGROUND
[0002] The lighting device such as LED (light emitting diode, Light Emitting Diode) lamp, movie and television lamp generally carries out light emission through the light source with LED lamp pearl, and the light emitted by LED lamp pearl is Lambert distribution, and the beam angle is larger, in order to converge light, realizes higher illumination, generally carries out secondary optical design, and the light distribution is carried out through optical system.
[0003] In the LED lamp and movie and television light lamp, the power of LED lamp pearl is bigger and bigger, and the light emitting surface is bigger and bigger, and the design difficulty of traditional reflector and fresnel lens structure increases, and it is difficult to realize high collimation degree, high penetration parallel light beam. INVENTION CONTENTS
[0004] In order to overcome at least one defect of the prior art, the utility model provides a lamp, and the light converging assembly collimates the light emitted by the light source after converging, the focusing lens converges the collimated light received to the primary reflector, the primary reflector reflects the received light to the secondary reflector once, and the secondary reflector reflects the received light twice to form a parallel light beam, and the parallel light beam formed has high collimation degree and strong penetration.
[0005] The utility model adopts the technical scheme that:
[0006] A lamp comprises:
[0007] A light source;
[0008] A lens assembly comprising a light converging assembly and a focusing lens;
[0009] A reflector assembly comprising a primary reflector and a secondary reflector;
[0010] The light converging assembly collimates the light emitted by the light source after converging, the focusing lens converges the collimated light received to the primary reflector, the primary reflector reflects the received light to the secondary reflector once, and the secondary reflector reflects the received light twice to form a parallel light beam.
[0011] In some embodiments, the light source is an LED array, and the LED array comprises a plurality of LED light emitting elements arranged in an array.
[0012] In some embodiments, the light converging assembly comprises a light converging lens that converges the light emitted by the light source.
[0013] The light collecting lens comprises a plurality of first plano-convex lenses arranged in the light collecting lens;
[0014] The number of the first plano-convex lenses is equal to the number of the LED light emitting elements, and the first plano-convex lenses are arranged one-to-one corresponding to the LED light emitting elements, the LED light emitting elements are arranged coaxially with the corresponding first plano-convex lenses, and the first plano-convex lenses are used for collecting the light emitted by the corresponding LED light emitting elements.
[0015] In some embodiments, the light collecting assembly comprises a collimating lens, and the collimating lens collimates the light collected by the light collecting lens;
[0016] The collimating lens comprises a plurality of second plano-convex lenses arranged in the collimating lens;
[0017] The number of the second plano-convex lenses is equal to the number of the LED light emitting elements, and the second plano-convex lenses are arranged one-to-one corresponding to the LED light emitting elements, the LED light emitting elements are arranged coaxially with the corresponding second plano-convex lenses, and the second plano-convex lenses are used for collimating the light collected by the corresponding first plano-convex lenses.
[0018] In some embodiments, the LED light emitting element array is arranged at equal intervals by a plurality of LED light emitting elements, and the collimating lens is closely arranged by a plurality of second plano-convex lenses;
[0019] The interval between the central axes of two adjacent LED light emitting elements is a, the diameter of the second plano-convex lens is b, and a≤b.
[0020] In some embodiments, the LED array is a circular array or a polygonal array.
[0021] In some embodiments, the focusing lens is a biconvex aspheric lens.
[0022] In some embodiments, the primary mirror is an aspheric convex mirror, and the primary mirror is arranged close to the focal plane of the focusing lens.
[0023] The secondary mirror is an aspheric concave mirror, and the center of the secondary mirror has a through hole.
[0024] The secondary mirror is arranged between the focusing lens and the primary mirror, and the light collimated by the light collecting assembly is converged to the primary mirror through the through hole of the secondary mirror.
[0025] In some embodiments, the outer diameter of the secondary mirror is greater than the outer diameter of the primary mirror.
[0026] In some embodiments, the light collecting lens, the collimating lens, the focusing lens, the secondary mirror and the primary mirror are coaxially arranged, and the light collecting lens, the collimating lens, the focusing lens, the secondary mirror and the primary mirror are sequentially arranged along the emitting direction of the light source.
[0027] And the outer diameter of the collimating lens is larger than that of the light collecting lens, the outer diameter of the focusing lens is larger than that of the collimating lens, and the outer diameter of the secondary mirror is larger than that of the focusing lens.
[0028] In conclusion, the utility model has the following technical effects: the light collecting assembly in the utility model collects and collimates the light emitted by the light source, the focusing lens converges the received collimated light onto the primary mirror, the primary mirror reflects the received light onto the secondary mirror once, and the secondary mirror reflects the received light twice to form a parallel light beam, and the formed parallel light beam has high collimation and strong penetration. BRIEF DESCRIPTION OF DRAWINGS
[0029] Figure 1 It is a whole structure schematic view of the utility model embodiment;
[0030] Figure 2 It is a structure schematic view of the lens assembly of the utility model embodiment;
[0031] Figure 3 It is a structure schematic view of the mirror assembly of the utility model embodiment.
[0032] In which, the meaning of the reference signs is as follows:
[0033] 10, light source, 101, LED light emitting element, 20, light collecting assembly, 201, first plano-convex lens, 202, second plano-convex lens, 30, focusing lens, 40, primary mirror, 50, secondary mirror, 60, through hole. DETAILED DESCRIPTION
[0034] In order to better understand and implement, the technical scheme in the utility model embodiment will be clearly and completely described below in combination with the drawings in the utility model embodiment.
[0035] In the description of the utility model, it should be explained that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model.
[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application.
[0037] Referring to Figures 1-3 The utility model discloses a lamp, include: light source 10, lens subassembly, lens subassembly includes light -receiving subassembly 20 and focusing lens 30, reflector subassembly, reflector subassembly includes primary reflector 40 and secondary reflector 50, light -receiving subassembly 20 collimates after the light of light source 10 is received and is concentrated, focusing lens 30 converges the light received after collimation to primary reflector 40, primary reflector 40 is reflected to secondary reflector 50 on the light received once, and secondary reflector 50 is reflected to form parallel light beam with the light received twice.
[0038] The utility model discloses a light -receiving subassembly 20 collimates after the light of light source 10 is received and is concentrated, focusing lens 30 converges the light received after collimation to primary reflector 40, primary reflector 40 is reflected to secondary reflector 50 on the light received once, and secondary reflector 50 is reflected to form parallel light beam with the light received twice, and the parallel light beam formed has high collimation degree and strong penetration.
[0039] In the utility model embodiment, the light source 10 is an LED array, and the LED array includes a plurality of LED light emitting elements 101.
[0040] Further, the LED light emitting element 101 is an LED lamp bead, and when the light emitted by the LED lamp bead is in Lambert distribution, the beam angle is 120 degrees. The beam angle is the angle range when the light intensity drops to half of the maximum light intensity, that is, within the range of 120 degrees, the light intensity of the LED lamp bead is not lower than half of the maximum light intensity of the LED lamp bead.
[0041] When the LED lamp bead is used as the light source 10, since the power of a single LED lamp bead is relatively low, generally 40W, and the illuminance is relatively low, generally used on small electronic devices, for the relatively large video and television equipment such as a video and television lamp, a plurality of LED lamp beads need to be arranged to form an LED light emitting element 101 array as the light source 10, so as to ensure that the LED lamp bead has sufficient illuminance when used as a video and television lamp.
[0042] In the utility model, the light collecting component 20 includes a light collecting lens, the light collecting lens collects the light emitted by the light source 10, the light collecting lens includes a plurality of first plano-convex lenses 201, the light collecting lens is arranged by the plurality of first plano-convex lenses 201, the number of the first plano-convex lenses 201 is equal to the number of the LED light emitting elements 101, and the first plano-convex lenses 201 are arranged one by one corresponding to the LED light emitting elements 101, the LED light emitting elements 101 are coaxially arranged with the corresponding first plano-convex lenses 201, and the first plano-convex lenses 201 are used to collect the light emitted by the corresponding LED light emitting elements 101.
[0043] In the utility model, the light collecting component 20 includes a collimating lens, the collimating lens collimates the light collected by the light collecting lens, the collimating lens includes a plurality of second plano-convex lenses 202, and the collimating lens is arranged by the plurality of second plano-convex lenses 202, the number of the second plano-convex lenses 202 is equal to the number of the LED light emitting elements 101, and the second plano-convex lenses 202 are arranged one by one corresponding to the LED light emitting elements 101, the LED light emitting elements 101 are coaxially arranged with the corresponding second plano-convex lenses 202, and the second plano-convex lenses 202 are used to collimate the light collected by the corresponding first plano-convex lenses 201.
[0044] Therefore, each LED light emitting element 101 corresponds to a first plano-convex lens 201 and a second plano-convex lens 202, in the corresponding LED light emitting element 101, first plano-convex lens 201 and second plano-convex lens 202, the first plano-convex lens 201 collects the light emitted by the corresponding LED light emitting element 101, and the corresponding second plano-convex lens 202 collimates the light collected by the corresponding first plano-convex lens 201, so that the light emitted by each LED light emitting element 101 is collimated by the corresponding first plano-convex lens 201 and second plano-convex lens 202 respectively and then enters the focusing lens 30 for focusing.
[0045] It can be understood that, compared with all the LED light emitting elements 101 collimating through the same first plano-convex lens 201 and second plano-convex lens 202 and then entering the focusing lens 30 for focusing, in the embodiment, each LED light emitting element 101 collimates respectively and then enters the focusing lens 30 for focusing, and the collimation degree is higher.
[0046] It should be noted that, in the corresponding LED light emitting element 101, the first plano-convex lens 201 and the second plano-convex lens 202, in the case of the LED light emitting element 101 and the corresponding first plano-convex lens 201 and the corresponding second plano-convex lens 202 coaxial, the diameter of the first plano-convex lens 201 is greater than the diameter of the corresponding LED light emitting element 101, so that the light emitted by the LED light emitting element 101 enters the first plano-convex lens 201 as much as possible to realize the convergence of the light, and the diameter of the second plano-convex lens 202 is greater than the diameter of the corresponding first plano-convex lens 201, so that the light converged by the first plano-convex lens 201 enters the second plano-convex lens 202 as much as possible to realize the collimation of the light, thereby avoiding the loss of luminous flux, to ensure a large light collection efficiency.
[0047] In the embodiments of the present application, the LED light emitting element 101, the first plano-convex lens 201 and the second plano-convex lens 202 are all cylindrical in shape, of course, in some other specific application scenarios, the LED light emitting element 101, the first plano-convex lens 201 and the second plano-convex lens 202 can also be other shapes, for example, polygonal prism shape; The specific shape of the LED light emitting element 101, the first plano-convex lens 201 and the second plano-convex lens 202 is selected according to actual needs.
[0048] The following is an example of further explanation that the LED light emitting element 101, the first plano-convex lens 201 and the second plano-convex lens 202 are all cylindrical in shape, and the diameter of the first plano-convex lens 201 is greater than the diameter of the corresponding LED light emitting element 101, and the diameter of the second plano-convex lens 202 is greater than the diameter of the corresponding first plano-convex lens 201.
[0049] In the present application, the LED light emitting element 101 array is arranged at equal intervals by a plurality of LED light emitting elements 101, and the collimating lens is closely arranged by a plurality of second plano-convex lenses 202; The distance between the center axes of the two adjacent LED light emitting elements 101 is a, the diameter of the second plano-convex lens 202 is b, and a≤b.
[0050] Specifically, when a=b, the collimating lens is closely arranged by a plurality of second plano-convex lenses 202; In order to further reduce the light emitting surface, a<b, at this time the collimating lens is closely arranged by a plurality of second plano-convex lenses 202.
[0051] In order to make the overall structure of the lamp more compact, the plurality of second plano-convex lenses 202 are closely arranged to form a collimating lens, the diameter of the first plano-convex lens 201 is greater than the diameter of the corresponding LED light emitting element 101, and the diameter of the second plano-convex lens 202 is greater than the diameter of the corresponding first plano-convex lens 201, so that a spacing is formed between the adjacent two first plano-convex lenses 201 in the plurality of first plano-convex lenses 201, and a spacing is formed between the adjacent two LED light emitting elements 101 in the plurality of LED light emitting elements 101.
[0052] In order to ensure uniformity of light, any adjacent two LED light emitting elements 101 in the plurality of LED light emitting elements 101 are arranged at equal intervals, so that the LED array is arranged by the plurality of LED light emitting elements 101 arranged at equal intervals; any adjacent two first plano-convex lenses 201 in the plurality of first plano-convex lenses 201 are arranged at equal intervals, so that the light collecting lens is arranged by the plurality of first plano-convex lenses 201 arranged at equal intervals.
[0053] Further, the LED array is a circular array or a polygonal array.
[0054] Further, the LED array is a triangular array, a quadrilateral array, a pentagonal array, or the like.
[0055] Preferably, in order to make the overall structure of the lamp more compact, any adjacent two LED light emitting elements 101 in the plurality of LED light emitting elements 101 are arranged at equal intervals, and any adjacent two first plano-convex lenses 201 in the plurality of first plano-convex lenses 201 are arranged at equal intervals, so that the LED array is an equilateral triangular array, and the light collecting lens and the collimating lens are both in the shape of an equilateral triangle.
[0056] Specifically, the first plano-convex lens 201 is made of optical material and can be made of existing ZK11 optical glass. Since there is a spacing between the adjacent two first plano-convex lenses 201, the first plano-convex lens 201 can be assembled by means of a honeycomb-shaped support.
[0057] Specifically, the second plano-convex lens 202 is made of optical material and can be made of existing high-boron-silicon optical glass. Since the adjacent two second plano-convex lenses 202 are closely arranged, the collimating lens is integrally formed.
[0058] In the utility model, the focusing lens 30 is a double-convex aspheric lens.
[0059] In the utility model, the primary mirror 40 is a non-spherical convex mirror, and the primary mirror 40 is arranged close to the focal plane of the focusing lens 30; the secondary mirror 50 is a non-spherical concave mirror, and the secondary mirror 50 has a through hole 60 at the center; the secondary mirror 50 is arranged between the focusing lens 30 and the primary mirror 40, and the light collimated by the light collecting assembly 20 is converged on the primary mirror 40 through the through hole 60 of the secondary mirror 50.
[0060] Specifically, the primary mirror 40 is made of aluminum alloy by spinning, and the mirror surface part is provided with a reflective layer formed by vacuum electroplating of aluminum, so as to improve the reflectivity of the reflective layer.
[0061] The focusing lens 30, the secondary mirror 50 and the primary mirror 40 are coaxially arranged, and the primary mirror 40 is arranged close to the focal plane of the focusing lens 30, so as to reduce the size and the occlusion of the light.
[0062] Preferably, the primary mirror 40 is arranged at the focal plane of the focusing lens 30, the inner diameter of the through hole 60 is greater than the outer diameter of the primary mirror 40, and the outer diameter of the primary mirror 40 is less than the outer diameter of the focusing lens 30.
[0063] Specifically, the secondary mirror 50 is made of aluminum alloy by spinning, and the mirror surface part is provided with a reflective layer formed by vacuum electroplating of aluminum, so as to improve the reflectivity of the reflective layer.
[0064] It should be noted that the mirror assembly can directly adopt a Cassegrain mirror assembly, and the size of the mirror assembly is determined according to the specific requirements of the utility model.
[0065] In the utility model, the outer diameter of the secondary mirror 50 is greater than the outer diameter of the primary mirror 40, so as to form a large-aperture parallel light beam.
[0066] In the utility model, the light collecting lens, the collimating lens, the focusing lens 30, the secondary mirror 50 and the primary mirror 40 are coaxially arranged, and the light collecting lens, the collimating lens, the focusing lens 30, the secondary mirror 50 and the primary mirror 40 are sequentially arranged along the emitting direction of the light source 10; and the outer diameter of the collimating lens is greater than the outer diameter of the light collecting lens, the outer diameter of the focusing lens 30 is greater than the outer diameter of the collimating lens, and the outer diameter of the secondary mirror 50 is greater than the outer diameter of the focusing lens 30.
[0067] Based on the above analysis, in the corresponding LED light emitting element 101, first plano-convex lens 201 and second plano-convex lens 202, in the LED light emitting element 101 and corresponding first plano-convex lens 201 and corresponding second plano-convex lens 202 coaxial case, the diameter of the first plano-convex lens 201 is greater than the diameter of the corresponding LED light emitting element 101, and the diameter of the second plano-convex lens 202 is greater than the diameter of the corresponding first plano-convex lens 201, so that the outer diameter of the collimating lens is greater than the outer diameter of the light collecting lens, thereby avoiding the loss of light flux and ensuring the large light collection efficiency.
[0068] Similarly, the outer diameter of the focusing lens 30 is greater than the outer diameter of the collimating lens, and the focusing lens 30 converges as much collimated light as possible onto the primary mirror 40.
[0069] Further, referring to Figure 1 , the outer diameter of the collimating lens is greater than the outer diameter of the light collecting lens, the outer diameter of the focusing lens 30 is greater than the outer diameter of the collimating lens, and the outer diameter of the secondary mirror 50 is greater than the outer diameter of the focusing lens 30, further avoiding the loss of light flux and ensuring the large light collection efficiency, and in the case of avoiding the primary mirror 40 shielding the light, a larger aperture light beam can be obtained.
[0070] Based on the above structure, the light collecting lens converges the light emitted by the light source 10, the collimating lens collimates the converged light, the divergence angle of the collimated light beam is 10-20°, the focusing lens 30 converges the collimated light onto the primary mirror 40, the primary mirror 40 reflects the received light once to the secondary mirror 50, and the secondary mirror 50 reflects the received light twice to form a parallel light beam, at this time the divergence angle of the parallel light beam is 2-5°, thereby forming a collimation degree high, strong penetration large aperture parallel light beam.
[0071] It should be noted that the lamp further comprises a housing and a fixing frame, the light source 10, the lens assembly and the mirror assembly are connected and fixed with the housing through the corresponding fixing frame, and the corresponding fixing frame can fix the outside of the light source 10 or the lens assembly or the mirror assembly. In order to reduce the influence of the fixing of the primary mirror 40 on the reflected light of the secondary mirror 50, the primary mirror 40 can be fixed by using a "one" type fixing frame.
[0072] The technical means disclosed by the utility model scheme is not limited to the technical means disclosed by the above-mentioned embodiments, and also includes the technical scheme composed of any combination of the above technical features. It should be noted that for ordinary skilled persons in the art, without departing from the principle of the utility model, some improvements and refinements can be made, which are also considered as the protection scope of the utility model.
Claims
1. A luminaire characterized by, The application relates to a light source (10); a lens assembly comprising a light collecting assembly (20) and a focusing lens (30); a mirror assembly comprising a primary mirror (40) and a secondary mirror (50); the light collecting assembly (20) collimates light emitted by the light source (10) after converging the light; the focusing lens (30) converges the received collimated light onto the primary mirror (40); the primary mirror (40) reflects the received light once onto the secondary mirror (50); and the secondary mirror (50) reflects the received light twice to form a parallel light beam. The light source (10) is an LED array, and the LED array comprises a plurality of LED light emitting elements (101). The light collecting assembly (20) comprises a light collecting lens for converging light emitted by the light source (10). The light collecting lens comprises a plurality of first plano-convex lenses (201), and the light collecting lens is arranged by the plurality of first plano-convex lenses (201). The number of the first plano-convex lenses (201) is equal to the number of the LED light emitting elements (101), and the first plano-convex lenses (201) are arranged one by one in correspondence with the LED light emitting elements (101); the LED light emitting elements (101) are coaxially arranged with the corresponding first plano-convex lenses (201); and the first plano-convex lenses (201) are used for converging light emitted by the corresponding LED light emitting elements (101).
2. The luminaire of claim 1, wherein: The light collecting assembly (20) comprises a collimating lens for collimating light converged by the light collecting lens.
3. The luminaire of claim 2, wherein: The collimating lens comprises a plurality of second plano-convex lenses (202), and the collimating lens is arranged by the plurality of second plano-convex lenses (202). The number of the second plano-convex lenses (202) is equal to the number of the LED light emitting elements (101), and the second plano-convex lenses (202) are arranged one by one in correspondence with the LED light emitting elements (101); the LED light emitting elements (101) are coaxially arranged with the corresponding second plano-convex lenses (202); and the second plano-convex lenses (202) are used for collimating light converged by the corresponding first plano-convex lenses (201). The LED light emitting element (101) array is arranged at equal intervals by a plurality of LED light emitting elements (101), and the collimating lens is closely arranged by a plurality of second plano-convex lenses (202).
4. The luminaire of claim 3, wherein: The interval between the central axes of two adjacent LED light emitting elements (101) is a, and the diameter of the second plano-convex lens (202) is b, a<=b. The LED array is a circular array or a polygonal array. The focusing lens (30) is a double-convex aspheric lens.
5. The luminaire of claim 4, wherein: 6. The luminaire of any one of claims 2-5, wherein: 7. The luminaire of any one of claims 1-5, wherein: 8. The luminaire of any one of claims 1-5, wherein: The primary mirror (40) is a non-spherical convex mirror, and is arranged close to the focal plane of the focusing lens (30); The secondary mirror (50) is a non-spherical concave mirror, and has a through hole (60) in the center; The secondary mirror (50) is arranged between the focusing lens (30) and the primary mirror (40), and the light collimated by the light receiving assembly (20) is converged onto the primary mirror (40) through the through hole (60) of the secondary mirror (50).
9. The luminaire of any one of claims 1-5, wherein: The outer diameter of the secondary mirror (50) is larger than that of the primary mirror (40).
10. The luminaire of claim 4, wherein: The light receiving lens, the collimating lens, the focusing lens (30), the secondary mirror (50) and the primary mirror (40) are coaxially arranged, and are sequentially arranged along the emission direction of the light source (10); And the outer diameter of the collimating lens is larger than that of the light receiving lens, the outer diameter of the focusing lens (30) is larger than that of the collimating lens, and the outer diameter of the secondary mirror (50) is larger than that of the focusing lens (30).