CN111609342A - Sectional type light conductor and have its stage lamp - Google Patents
Sectional type light conductor and have its stage lamp Download PDFInfo
- Publication number
- CN111609342A CN111609342A CN201911204757.1A CN201911204757A CN111609342A CN 111609342 A CN111609342 A CN 111609342A CN 201911204757 A CN201911204757 A CN 201911204757A CN 111609342 A CN111609342 A CN 111609342A
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- light
- light guide
- section
- guide section
- segment
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
-
- 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
- F21V2200/00—Use of light guides, e.g. fibre optic devices, in lighting devices or systems
- F21V2200/10—Use of light guides, e.g. fibre optic devices, in lighting devices or systems of light guides of the optical fibres type
-
- 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]
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention discloses a sectional light guide and a stage lamp with the same, wherein the sectional light guide comprises a first light guide section and a second light guide section, light is transmitted from the first light guide section to the second light guide section, the cross section area of at least one of the first light guide section and the second light guide section is gradually increased along the light path direction, the light emitting surface area of the second light guide section is larger than the light incident surface area of the first light guide section, and the length ratio of the first light guide section to the second light guide section is 3: 1 to 1: 1. utilize the first light guide section that the cross section is less to carry out multiple reflection to the light of income in order to reach mixed light purpose to utilize the second light guide section to carry out moulding in order to reach the shape that changes the facula to the light beam, because the length ratio of first light guide section and second light guide section is 3: 1 to 1: under the condition that the whole length of the sectional type light guide body is limited, the first light guide section and the second light guide section are not too long or too short, so that the shape, the brightness and the color uniformity of a projected light spot are guaranteed.
Description
Technical Field
The invention relates to the technical field of lamplight, in particular to a sectional type light guide body and a stage lamp with the same.
Background
In the field of lighting technology, in order to collect light emitted from a light source, various light collecting elements are generally used, such as a light reflecting cup, a light guide body, and a light collecting lens, wherein the light reflecting cup is mainly used for collecting light emitted from a bubble lamp, and the light guide body and the light collecting lens are mainly used for collecting light emitted from an LED lamp bead. Because LED lamp pearl is mostly square, so in order to better receive it light, the income plain noodles of light guide body also corresponds to trend squarely as far as possible. In a conventional light guide, most of the cross-sectional shapes from the light incident surface to the light exiting surface are unchanged, for example, the light incident surface is a square light exiting surface and is also a square light guide, or the light incident surface is a regular hexagon light exiting surface and is also a regular hexagon. Therefore, the light spots of the emitted light beams in the direction perpendicular to the light path are square or regular hexagon, and in the field of lighting, the light spots of the emitted light beams in the direction perpendicular to the light path generally need to tend to be circular, and the projected light spots are required to be uniform in brightness and color and cannot have obvious bright areas or dark areas. Therefore, the shapes of the light outgoing surface and the light incoming surface of a small part of light guide bodies are different so as to ensure the light receiving effect and the light spot shape, but the light guide bodies do not have ideal light mixing effect on the light emitted by the LED lamp beads.
Disclosure of Invention
The present invention is directed to overcome at least one of the above-mentioned drawbacks of the prior art, and provides a sectional light guide, which can achieve an ideal light spot shape and a good light mixing effect by adjusting the ratio of the first light guide section to the second light guide section.
In order to solve the technical problems, the invention adopts the technical scheme that: the utility model provides a sectional type light guide, includes first light guide section and second light guide section, light certainly first light guide section transmission to second light guide section is along the light path direction, first light guide section with at least one cross sectional area in the second light guide section is crescent along the light path direction, just the plain noodles area of second light guide section is greater than the income plain noodles area of first light guide section, first light guide section with the length ratio of second light guide section is 3: 1 to 1: 1.
according to the sectional type light guide body, the first light guide section with a smaller cross section area is used for reflecting incoming light for multiple times so as to achieve the purpose of light mixing, the second light guide section is used for shaping light beams so as to change the shape of light spots, and the length ratio of the first light guide section to the second light guide section is 3: 1 to 1: under the condition that the integral length of the sectional type light guide body is limited, the first light guide section and the second light guide section cannot be too long or too short, so that sufficient light mixing can be realized, ideal shaping can be achieved, and the integral shape, the brightness and the color uniformity of a projected light spot can be guaranteed.
Further, the cross section of the first light guide section and/or the cross section of the second light guide section are centrosymmetric sections. Because the shape of the light source is generally centrosymmetric, the cross section of the first light guide section and/or the cross section of the second light guide section are/is set to be centrosymmetric, and correspondingly, the light emitted by the light source can be better mixed, so that the brightness and the color of the projected light spots are more uniform.
Further, the shape of the light emitting surface of the second light guide section tends to be more circular than the shape of the light incident surface of the first light guide section. Therefore, the light spots projected by the sectional type light guide body tend to be more circular, so that the requirements of the field of lamplight on the shapes of the projected light spots are met.
Furthermore, the side walls of the first light guide section and the second light guide section are provided with a plurality of edges, so that the processing is easy, and the number of the edges of the second light guide section is greater than that of the first light guide section, so that the light guide section tends to be circular.
Further, the light incident surface of the first light guide section is a regular quadrangle or a regular hexagon, which conforms to the shape of a common LED lamp bead, and/or the light emergent surface of the second light guide section is a regular hexagon, a regular octagon or a regular dodecagon, which tends to be circular.
Furthermore, the side wall of the first light guide section is provided with a plurality of edges which are easy to process, and the second light guide section is in a circular truncated cone shape, so that a circular light spot is projected through the sectional type light guide body, and the requirements of the light field on the shape of the projected light spot are met.
Furthermore, the connecting surface connecting the two adjacent edges protrudes outwards to form an arc-shaped surface. The reflecting direction of the light in the sectional type light guide body is changed by utilizing the arc-shaped surface, so that the slight angle difference of the light is amplified, the light is dispersed towards different directions as much as possible, and the light mixing is more uniform.
Furthermore, the light-emitting surface of the first light guide section is connected with the light-entering surface of the second light guide section. The light mixing and shaping device is simple in structure and easy to process, and the light mixing and shaping purposes are achieved through the simplest structure.
Furthermore, the light-emitting surface of the first light guide section and the light-entering surface of the second light guide section are circular with the same radius. When the light beam enters the second light guide section from the first light guide section, the light beam is smooth and natural, and cannot be very abrupt, so that light loss is caused.
Furthermore, along the direction of the light path, the cross section of the first light guide section is gradually changed from a polygon to a circle, and the cross section of the second light guide section is gradually changed from a circle to a polygon. The shape change of the first light guide section and the second light guide section is smooth, and light loss caused by light in the transmission process of the first light guide section and the second light guide section is avoided.
Further, the length ratio of the first light guide section to the second light guide section is 2: 1. the proportion is optimal, and the light mixing effect and the light beam shaping effect are optimal.
Further, the ratio of the overall length of the segmented light guide body to the width of the light incident surface of the first light guide segment is 25: 1 to 15: 1. within this ratio range, the overall length of the segmented light guide body is sufficient to sufficiently mix the light rays received from the light incident surface of the first light guide segment, thereby avoiding uneven brightness and color of the emitted light spots.
The light source further comprises a light homogenizing section arranged on the light emitting surface of the second light guide section, and the light homogenizing section is provided with a light homogenizing surface for homogenizing light. The light homogenizing section homogenizes light beams emitted from the second light guide section further, and the brightness and color of projected light spots are prevented from being uneven.
The invention also provides a stage lamp which comprises any one of the sectional type light guide bodies.
Drawings
FIG. 1 is a schematic structural view of a segmented light guide according to a first embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a first light guide section according to the present invention.
Fig. 3 is a schematic diagram of the change in cross-sectional shape of the first light guiding section of the present invention.
Fig. 4 is a schematic structural diagram of a second light guide section according to the present invention.
Fig. 5 is a schematic diagram of the cross-sectional shape change of the second light guiding section according to the present invention.
FIG. 6 is a schematic structural view of a segmented light guide according to a second embodiment of the present invention.
FIG. 7 is a schematic structural view of a segmented light guide according to a third embodiment of the present invention.
In the figure:
100. a first light guide section; 200. a second light guide section; 300. a light homogenizing section; 310. homogenizing the surface of the light; 410. an edge; 420. and (5) connecting the surface.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
As shown in fig. 1, for the first embodiment of the present invention, a segmented light guide is provided, which includes a first light guide segment 100 and a second light guide segment 200, wherein light is transmitted from the first light guide segment 100 to the second light guide segment 200, along an optical path direction, that is, an exit direction of a light beam, a cross-sectional area of at least one of the first light guide segment 100 and the second light guide segment 200 is gradually increased along the optical path direction, an area of an exit surface of the second light guide segment 200 is larger than an area of an entrance surface of the first light guide segment 100, and a length ratio of the first light guide segment 100 to the second light guide segment 200 is 3: 1 to 1: 1.
according to the sectional type light guide, the first light guide section 100 with a smaller cross-sectional area is used for reflecting incoming light for multiple times so as to achieve the purpose of light mixing, the second light guide section 200 is used for shaping light beams so as to change the shape of light spots, and the length ratio of the first light guide section 100 to the second light guide section 200 is 3: 1 to 1: 1, under the condition that the overall length of the sectional light guide body is limited, the first light guide section 100 and the second light guide section 200 are not too long or too short, so that sufficient light mixing can be realized, ideal shaping can be achieved, and the overall shape, brightness and color uniformity of projected light spots can be guaranteed.
In the present embodiment, the cross-sectional area of the first light guiding section 100 and the cross-sectional area of the second light guiding section 200 are gradually increased along the optical path direction. In other embodiments, the cross-sectional area of the first light guide section 100 may be kept constant, and the cross-sectional area of the second light guide section 200 may be gradually increased along the light path direction; or the cross-sectional area of the first light guide section 100 gradually increases along the light path direction, and the cross-sectional area of the second light guide section 200 remains constant as long as the light exit surface area of the second light guide section 200 is larger than the light entrance surface area of the first light guide section 100.
As shown in fig. 2 to 4, in a preferred embodiment of the present invention, a cross section of the first light guiding section 100 and/or a cross section of the second light guiding section 200 are centrosymmetric. Because the shape of the light source is generally centrosymmetric, the cross section of the first light guide section 100 and/or the cross section of the second light guide section 200 are/is configured as centrosymmetric cross sections, and accordingly, the light emitted by the light source can be better mixed, so that the brightness and the color of the projected light spots are more uniform. Optionally, the cross-section of the first light guiding section 100 and/or the cross-section of the second light guiding section 200 may be circular, regular polygon, star-shaped or other centrosymmetric shape.
In a preferred embodiment of the present invention, the shape of the light emitting surface of the second light guide section 200 is more circular than the shape of the light incident surface of the first light guide section 100. Therefore, the light spots projected by the sectional type light guide body tend to be more circular, so that the requirements of the field of lamplight on the shapes of the projected light spots are met. The light incident surface of the first light guide section 100 and the light emitting surface of the second light guide section 200 are both regular polygons, the number of light emitting surface edges of the second light guide section 200 is greater than the number of light incident surface edges of the first light guide section 100, the light incident surface of the first light guide section 100 is also polygonal, the light emitting surface of the second light guide section 200 is circular, the light incident surface of the first light guide section 100 is also star-shaped, and the light emitting surface of the second light guide section 200 is circular, so long as the shape of the light emitting surface of the second light guide section 200 is more circular than that of the light incident surface of the first light guide section 100.
In a preferred embodiment of the present invention, the sidewalls of the first light guiding section 100 and the second light guiding section 200 have a plurality of edges 410, which are easy to process, and the number of the edges 410 of the second light guiding section 200 is greater than the number of the edges 410 of the first light guiding section 100, and tends to be more circular. In this embodiment, the first light guiding section 100 and the second light guiding section 200 are both a prism or a frustum, in other embodiments, the first light guiding section 100 and the second light guiding section 200 may also be a uniform polygon prism, or the first light guiding section 100 and the second light guiding section 200 are other bodies having an edge 410.
As shown in the drawings, in a preferred embodiment of the invention, the light incident surface of the first light guide section 100 is a regular quadrangle or a regular hexagon, which conforms to the shape of a general LED lamp bead, and/or the light emitting surface of the second light guide section 200 is a regular hexagon, a regular octagon or a regular dodecagon, which tends to be circular. In this embodiment, the light incident surface of the first light guide section 100 is a regular quadrangle, and the light exiting surface of the second light guide section 200 is a regular octagon; in a second embodiment of the present invention, the light incident surface of the first light guide section 100 is a regular quadrangle, and the light exiting surface of the second light guide section 200 is a regular hexagon (as shown in fig. 6); in a third embodiment of the present invention, the light incident surface of the first light guide section 100 is a regular quadrilateral, and the light exiting surface of the second light guide section 200 is a regular dodecagon (see fig. 7).
In a preferred embodiment of the present invention, the sidewall of the first light guiding section 100 has a plurality of edges 410, which may be polygonal prisms or truncated cones, and is easy to process, and the second light guiding section 200 is truncated cone-shaped, so that a circular light spot is projected through the segmented light guiding body, thereby meeting the requirement of the light field for projecting the light spot shape.
In the preferred embodiment of the present invention, the connecting surface 420 connecting the two adjacent edges 410 protrudes outward to form an arc surface. The reflecting direction of the light in the sectional type light guide body is changed by utilizing the arc-shaped surface, so that the slight angle difference of the light is amplified, the light is dispersed towards different directions as much as possible, and the light mixing is more uniform.
In this embodiment, the curvature of the connection surface 420 of the first light guiding section 100 and the curvature of the connection surface 420 of the second light guiding section 200 are gradually increased toward the direction of approaching each other until the light emitting surface of the first light guiding section 100 and the light incident surface of the second light guiding section 200 become circular.
As shown in fig. 1, in the preferred embodiment of the present invention, the light emitting surface of the first light guiding section 100 is connected to the light incident surface of the second light guiding section 200. The light mixing and shaping device is simple in structure and easy to process, and the light mixing and shaping purposes are achieved through the simplest structure. In other embodiments, the light emitting surface of the first light guiding section 100 and the light incident surface of the second light guiding section 200 may be connected to each other by a cylinder with a constant radius.
In a preferred embodiment of the present invention, the light emitting surface of the first light guiding section 100 and the light incident surface of the second light guiding section 200 are circular with the same radius. When the light beam enters the second light guiding section 200 from the first light guiding section 100, the light beam is smooth and natural, and is not very abrupt, which causes light loss.
In the preferred embodiment of the present invention, as shown in fig. 2 to 4, the cross section of the first light guiding section 100 is gradually changed from a polygon to a circle, and the cross section of the second light guiding section 200 is gradually changed from a circle to a polygon along the light path direction. The shape change of the first light guiding section 100 and the second light guiding section 200 is smooth, and light loss caused by light during the propagation process of the first light guiding section 100 and the second light guiding section 200 is avoided. In this embodiment, the cross section of the light guide section is gradually changed from a quadrilateral to a circle, and the cross section of the second light guide section 200 is gradually changed from a circle to an octagon
In a preferred embodiment of the present invention, as shown in fig. 1, the length ratio of the first light guiding section 100 to the second light guiding section 200 is 2: 1. the proportion is optimal, and the light mixing effect and the light beam shaping effect are optimal.
In a preferred embodiment of the present invention, the ratio of the overall length of the segmented light guide to the width of the light incident surface of the first light guide segment 100 is 25: 1 to 15: 1. that is, as the width of the segmented light guide increases, the overall length of the segmented light guide is always kept 15 to 25 times the width of the light incident surface of the first light guide segment 100. Within this ratio, the entire length of the segmented light guide is sufficient to mix the light rays received from the light incident surface of the first light guide segment 100 sufficiently, so as to avoid uneven brightness and color of the emitted light spots.
In this embodiment, the ratio of the overall length of the segmented light guide to the width of the light incident surface of the first light guide segment 100 is 20: 1, the whole length of the sectional type light guide body is 3 cm-8 cm.
In a preferred embodiment of the present invention, the light homogenizing section 300 is further included and disposed on the light emitting surface of the second light guiding section 200, and the light homogenizing section 300 has a light homogenizing surface 310 for homogenizing light. The light homogenizing section 300 homogenizes the light beam emitted from the second light guiding section 200 further, so as to avoid uneven brightness and color of the projected light spot. The light homogenizing surface 310 may be a frosted surface or a micro-lens array.
Optionally, the radius of the light homogenizing section 300 is greater than the light emitting surface of the second light guiding section 200, so that the light emitting surface of the second light guiding section 200 can be completely covered, light leakage is avoided, and light homogenizing can be performed on all the emitted light.
The invention also provides a stage lamp which comprises any one of the sectional type light guide bodies.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (14)
1. The utility model provides a sectional type light guide, its characterized in that, includes first light guide section (100) and second light guide section (200), light certainly first light guide section (100) transmit to second light guide section (200), along the light path direction, first light guide section (100) with at least one cross sectional area in second light guide section (200) increases along the light path direction gradually, just the exit surface area of second light guide section (200) is greater than the income plain noodles area of first light guide section (100), first light guide section (100) with the length ratio of second light guide section (200) is 3: 1 to 1: 1.
2. the segmented light guide according to claim 1, wherein the cross-section of the first light guiding section (100) and/or the cross-section of the second light guiding section (200) is a centrosymmetric cross-section.
3. The segmented light guide of claim 1, wherein the light exit surface shape of the second light guide segment (200) is more rounded than the light entrance surface shape of the first light guide segment (100).
4. The segmented light guide according to claim 1, wherein the sidewalls of the first light guide segment (100) and the second light guide segment (200) each have a plurality of edges (410), and the number of edges (410) of the second light guide segment (200) is greater than the number of edges (410) of the first light guide segment (100).
5. The segmented light guide according to claim 4, wherein the light incident surface of the first light guide segment (100) is a regular quadrangle or a regular hexagon, and/or the light exiting surface of the second light guide segment (200) is a regular hexagon, a regular octagon or a regular dodecagon.
6. The segmented light guide of claim 1, wherein the side wall of the first light guide segment (100) has a plurality of edges (410) and the second light guide segment (200) is truncated cone shaped.
7. The segmented light guide of claim 4 or 6, wherein the connecting surfaces (420) connecting two adjacent edges (410) protrude outwards to form an arc-shaped surface.
8. The segmented light guide of claim 1, wherein the light exit surface of the first light guiding segment (100) is connected to the light entrance surface of the second light guiding segment (200).
9. The segmented light guide of claim 1, wherein the light exit surface of the first light guide segment (100) and the light entrance surface of the second light guide segment (200) are circular with equal radius.
10. The segmented light guide of claim 9, wherein the cross-section of the first light guide segment (100) is tapered from a polygon to a circle and the cross-section of the second light guide segment (200) is tapered from a circle to a polygon along the light path.
11. The segmented light guide according to claim 1, wherein the length ratio of the first light guiding section (100) to the second light guiding section (200) is 2: 1.
12. the segmented light guide of claim 1, wherein the ratio of the overall length of the segmented light guide to the width of the light incident surface of the first light guide segment (100) is 25: 1 to 15: 1.
13. the segmented light guide according to claim 1, further comprising a light homogenizing section (300) arranged at the light exit surface of the second light guide section (200), the light homogenizing section (300) having a light homogenizing surface (310) for homogenizing light.
14. A stage light comprising the segmented light guide of any of claims 1 to 11.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911204757.1A CN111609342A (en) | 2019-11-29 | 2019-11-29 | Sectional type light conductor and have its stage lamp |
| PCT/CN2020/111813 WO2021103703A1 (en) | 2019-11-29 | 2020-08-27 | Segmented light guide body and stage lamp having same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911204757.1A CN111609342A (en) | 2019-11-29 | 2019-11-29 | Sectional type light conductor and have its stage lamp |
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| Publication Number | Publication Date |
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| CN111609342A true CN111609342A (en) | 2020-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911204757.1A Pending CN111609342A (en) | 2019-11-29 | 2019-11-29 | Sectional type light conductor and have its stage lamp |
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| Country | Link |
|---|---|
| CN (1) | CN111609342A (en) |
| WO (1) | WO2021103703A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115327692A (en) * | 2022-08-22 | 2022-11-11 | 宁波福尔达智能科技股份有限公司 | Light guide part and RBG (radial basis group) light module |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6056426A (en) * | 1998-09-28 | 2000-05-02 | Federal Signal Corporation | Monolithic beam shaping light output light device |
| WO2012083957A1 (en) * | 2010-12-23 | 2012-06-28 | Martin Professional A/S | Optical light mixer providing a homogenized and uniform light beam |
| DE102013111578B4 (en) * | 2013-10-21 | 2019-04-18 | Wago Verwaltungsgesellschaft Mbh | electronic module |
| CN204023642U (en) * | 2014-06-06 | 2014-12-17 | 山东中川液压有限公司 | Hydraulic crawler excavator oil-liquid hybrid electric system |
| CN108506749B (en) * | 2018-05-04 | 2019-09-17 | 广州市浩洋电子股份有限公司 | A kind of optical system and the illuminator using this optical system |
| CN208670635U (en) * | 2018-08-24 | 2019-03-29 | 广州市浩洋电子股份有限公司 | Novel multi-effect fruit LED lamp |
| CN210979487U (en) * | 2019-11-29 | 2020-07-10 | 广州市浩洋电子股份有限公司 | Sectional type light conductor and have its stage lamp |
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2019
- 2019-11-29 CN CN201911204757.1A patent/CN111609342A/en active Pending
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- 2020-08-27 WO PCT/CN2020/111813 patent/WO2021103703A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115327692A (en) * | 2022-08-22 | 2022-11-11 | 宁波福尔达智能科技股份有限公司 | Light guide part and RBG (radial basis group) light module |
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| WO2021103703A1 (en) | 2021-06-03 |
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