CN105605484B - Backlight lamp - Google Patents
Backlight lamp Download PDFInfo
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- CN105605484B CN105605484B CN201610067344.3A CN201610067344A CN105605484B CN 105605484 B CN105605484 B CN 105605484B CN 201610067344 A CN201610067344 A CN 201610067344A CN 105605484 B CN105605484 B CN 105605484B
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- light emitting
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- backlight
- central axis
- diaphragm
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- 238000000429 assembly Methods 0.000 claims description 37
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- 230000000694 effects Effects 0.000 claims description 9
- 238000003384 imaging method Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 229910003460 diamond Inorganic materials 0.000 claims description 3
- 239000010432 diamond Substances 0.000 claims description 3
- 230000001788 irregular Effects 0.000 claims description 3
- 238000005286 illumination Methods 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 abstract description 57
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000004590 computer program Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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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
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- 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
- F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
- F21V11/08—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using diaphragms containing one or more apertures
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- 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
- F21V19/00—Fastening of light sources or lamp holders
- F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
Abstract
The invention provides a backlight, comprising: the lamp comprises a lamp shell and a light-emitting assembly arranged on the lamp shell, wherein the light-emitting assembly comprises a light-emitting unit and a diaphragm which are sequentially arranged along the central axis of the light-emitting assembly, and the central axis of the light-emitting assembly and the central axis of the lamp shell form a preset angle. The backlight lamp provided by the technical scheme of the invention can form the brightness cut-off light spot with bright and dark contrast and strong stereoscopic impression, has a simple optical structure and is suitable for mass production.
Description
Technical Field
The present invention relates to the field of lighting technology, and in particular, to a backlight.
Background
The lamp with the backlight effect is a very common decorative lamp in the current market, the backlight effect means that the lamplight is not directly emitted, but firstly emitted to the mounting surface of the lamp such as a wall and the like, and the lamplight is gently and darkly illuminated through reflection of the mounting surface, so that the decorative lamp has good decorative effect.
However, the lamps with backlight effect on the market at present often have diffuse light emission and single effect, and cannot meet the increasing appreciation level of people.
Disclosure of Invention
The present invention provides a backlight to overcome or at least partially solve the above-mentioned problems.
According to an aspect of the present invention, there is provided a backlight comprising: the lamp comprises a lamp shell and a light-emitting assembly arranged on the lamp shell, wherein the light-emitting assembly comprises a light-emitting unit and a diaphragm which are sequentially arranged along the central axis of the light-emitting assembly, and the central axis of the light-emitting assembly and the central axis of the lamp shell form a preset angle.
Optionally, the plurality of light emitting assemblies are disposed around a central axis of the lamp housing, and each central axis of the light emitting assemblies forms a predetermined angle with the central axis of the lamp housing.
Optionally, the light emitting assembly further includes a lens, the lens is disposed between the light emitting unit and the diaphragm along a central axis of the light emitting assembly, and an included angle formed by two ends of a hole on the diaphragm and the light emitting unit is smaller than or equal to a maximum convergence angle of the lens.
Optionally, the plurality of light emitting assemblies are arranged in one of the following ways:
the plurality of luminous assemblies are annularly and equidistantly arranged around the central shaft of the lamp shell;
the plurality of luminous assemblies are arranged around the central shaft of the lamp shell in a plurality of concentric annular equidistant modes;
the plurality of luminous assemblies are arranged at one side of the central shaft of the lamp shell at equal intervals in a semi-annular shape;
the plurality of luminous assemblies are arranged at equal intervals around one side of the central shaft of the lamp shell in a plurality of semi-annular shapes.
Optionally, the diaphragms of the light emitting components form a whole, the whole is a table body which is hollow without bottom and provided with a plurality of trapezoid side surfaces, each trapezoid side surface of the table body is provided with at least one hole, the top surface of the table body is polygonal, and the bottom edge of the table body is circular.
Optionally, the lamp housing is located at the bottom of the backlight, the lamp housing is bowl-shaped, a table body with multiple trapezoid sides is disposed on the bottom surface of the lamp housing, and the table body formed by the diaphragms of the multiple light emitting components is fastened to the lamp housing through the circular bottom edge of the table body.
Optionally, each trapezoid side of the table body with multiple trapezoid sides on the bottom surface of the lamp housing is provided with a flaky rectangular mounting base, the light-emitting unit of the light-emitting assembly is arranged on the mounting base, and the lens of the light-emitting assembly is hemispherical and is closely attached to the light-emitting unit.
Optionally, the colors of the lights emitted by the plurality of light emitting components are the same;
the colors of the lights emitted by the light emitting components are different; or alternatively
The light-emitting components are divided into a plurality of groups, the colors of the lights emitted by the light-emitting components in each group are the same, and the colors of the lights emitted by the light-emitting components in the plurality of groups are different.
Optionally, the aperture shapes on the diaphragms of the plurality of light emitting components are the same;
the aperture shapes of the diaphragms of the light emitting components are different; or alternatively
The light-emitting components are divided into a plurality of groups, the aperture shapes of the diaphragms of each group of light-emitting components are the same, and the diaphragms of the plurality of groups of light-emitting components are different from each other.
Optionally, the shape of the aperture in the diaphragm includes at least one of: circular, semicircular, oval, square, triangular, diamond, trapezoidal, star-shaped, heart-shaped, or irregular.
Optionally, the light emitting components are divided into a plurality of groups, each group of light emitting components can be independently turned on or turned off, and the brightness and the color temperature of each group of light emitting components are adjustable.
Optionally, the central axis of the aperture in the diaphragm is offset from the central axis of the light emitting assembly by a predetermined distance.
Optionally, the light emitting assembly includes a plurality of light emitting units, and the plurality of light emitting units form one light emitting unit group.
Optionally, the distance from the light emitting unit to the plane where the diaphragm is located is h1, the width of the hole on the diaphragm is S1, the distance from the light emitting unit to the imaging surface of the lamp is h2, and if the imaging width is S2, then h1:s1=h2:s2.
Optionally, the central axis of the light emitting component forms a predetermined angle with the central axis of the lamp housing of 20 ° to 40 °.
The backlight lamp provided by the technical scheme of the invention can obtain the brightness cut-off light spot, and has the optical effects of bright-dark contrast and strong stereoscopic impression. Moreover, the backlight lamp light provided by the technical scheme of the invention has a simple structure and is suitable for mass production.
The foregoing description is only an overview of the present invention, and is intended to be implemented in accordance with the teachings of the present invention in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present invention more readily apparent.
The above, as well as additional objectives, advantages, and features of the present invention will become apparent to those skilled in the art from the following detailed description of a specific embodiment of the present invention when read in conjunction with the accompanying drawings.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
fig. 1 is a schematic structure view of a backlight according to an embodiment of the present invention;
FIG. 2 is a schematic view of a central axis of a light emitting assembly forming a 20 angle with a central axis of a luminaire housing according to one embodiment of the present invention;
FIG. 3 is an optical effect achieved by a backlight according to one embodiment of the invention;
FIG. 4 is a schematic view of a central axis of a light emitting assembly forming an angle of 40 with a central axis of a luminaire housing according to one embodiment of the present invention;
FIG. 5 is an optical effect achieved by a backlight according to another embodiment of the present invention;
fig. 6 is a schematic view of the central axis of the aperture on the diaphragm being offset from the central axis of the light emitting unit by a predetermined distance according to one embodiment of the invention;
FIG. 7 is an optical effect achieved by a backlight according to yet another embodiment of the present invention;
fig. 8 is a schematic structural view of a light emitting assembly according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of light rays emitted by a lens-converging light emitting unit according to one embodiment of the present invention;
fig. 10 is an exploded structure view of a backlight according to an embodiment of the present invention;
FIG. 11 is a schematic diagram of the overall structure of a backlight according to an embodiment of the present invention;
FIG. 12 is a schematic view of an optical pattern formed by a backlight according to one embodiment of the invention;
FIG. 13 is a schematic view of an optical pattern formed by a backlight according to another embodiment of the invention;
fig. 14 is a schematic view of an optical pattern formed by a backlight according to still another embodiment of the present invention;
FIG. 15 is a schematic view of an optical pattern formed by a backlight according to yet another embodiment of the invention;
FIG. 16 is a schematic view of an optical pattern formed by a backlight according to yet another embodiment of the invention;
FIG. 17 is a schematic view of an optical pattern formed by a backlight according to yet another embodiment of the invention;
fig. 18 is a schematic view of the shape of the aperture on the diaphragm according to one embodiment of the invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that, on the premise of no conflict, the embodiments of the present invention and the technical features in the embodiments may be combined with each other.
According to an embodiment of the present invention, there is provided a backlight including: the lamp comprises a lamp housing 10 and a light emitting assembly 20 arranged on the lamp housing 10, wherein the light emitting assembly 20 comprises a light emitting unit 21 and a diaphragm 23 which are sequentially arranged along the central axis of the light emitting assembly 20, and the central axis of the light emitting assembly 20 forms a preset angle with the central axis of the lamp housing 10.
The backlight lamp provided by the technical scheme of the invention can obtain the brightness cut-off light spot, form the optical effects of bright-dark contrast and strong stereoscopic impression, and is very suitable for various situations requiring cut-off light spots such as wall washing lamps, water drop lamps and the like. Moreover, the backlight lamp light provided by the technical scheme of the invention has a simple structure and is suitable for mass production.
In another embodiment of the present invention, the light emitting assembly 20 may be plural, and plural light emitting assemblies 20 may be disposed around the central axis of the lamp housing 10, and the central axis of each light emitting assembly 20 forms a predetermined angle with the central axis of the lamp housing 10.
In the present embodiment, a greater variety of optical effects can be achieved by providing a plurality of light emitting assemblies 20, so that the backlight provided in the present embodiment can be applied to a greater number of scenes.
In another embodiment of the present invention, the light emitting assembly 20 further includes a lens 22, the lens 22 is disposed between the light emitting unit 21 and the diaphragm 23 along the central axis of the light emitting assembly 20, and both ends of the aperture on the diaphragm 23 form an angle with the light emitting unit 21 that is less than or equal to the maximum convergence angle of the lens 23.
The backlight (or backlight modeling lamp) provided in this embodiment adopts an optical system design of a lens and a diaphragm (with Kong Bingzhang), so that not only a brightness cut-off light spot is obtained, but also an overlapping backlight effect can be obtained through combination, the light spot is gradually obvious from edge to center, a bright-dark contrast and a strong stereoscopic impression are formed, and an optical effect which is not possessed by the original backlight is realized. And the light spot patterns with the brightness cut-off are obtained through the design and the combined use of the lens and the diaphragm, so that the optical efficiency is high, the emergent effect is good, the optical structure is simple, and the optical lens is suitable for mass production.
With the backlight provided in this embodiment, the number of the light emitting assemblies 20 included therein is variable, and various optical effects can be achieved by setting the number of the light emitting assemblies 20. Similarly, by adjusting the angle between the central axis of the light emitting module 20 and the central axis of the lamp housing 10, different optical effects can be obtained, and in this embodiment, the angle between the central axis of the light emitting module 20 and the central axis of the lamp housing 10 is preferably 20 ° to 40 °. In addition, if the distance from the light emitting unit 21 to the plane of the diaphragm 23 is set to be h1, the width of the hole on the diaphragm 23 is set to be S1, the distance from the light emitting unit 21 to the imaging surface (such as a ceiling and a wall) of the lamp is set to be h2, and the imaging width is set to be S2, then h1:s1=h2:s2, and therefore, by adjusting these distances, different optical effects can be obtained.
Fig. 1 is a schematic structure view of a backlight according to an embodiment of the present invention. In the backlight shown in fig. 1, 8 sets of light emitting modules 20 are disposed around the central axis of the lamp housing 10. As shown in fig. 2, the central axis of the light emitting assembly 20 forms an angle of 20 ° with the central axis of the lamp housing 10. The optical effect achieved is shown in fig. 3, and the overlapping light spots (referring to the light spots overlapped at least twice) occupy 85 percent. As shown in fig. 4, the angle formed by the central axis of the light assembly 20 and the central axis of the lamp housing 10 may also be 40 °. The optical effect achieved is shown in fig. 5, where the overlapping spots (referring to spots that are superimposed at least twice) occupy 40%.
In order to achieve different optical effects, the central axis of the aperture in the diaphragm 23 may also be offset from the central axis of the light emitting assembly 20, or from the central axis of the light emitting unit 21, by a predetermined distance. As shown in fig. 6, the center axis of the hole on the diaphragm 23 is 7.5mm away from the center axis of the light emitting unit 21, and the optical effect achieved is as shown in fig. 7 (8 sets of light emitting modules 20, the center axis of the light emitting modules 20 forming an angle of 20 ° with the center axis of the lamp housing 10).
In the present embodiment, the light emitting assembly 20 adopts a structure of the light emitting unit 21+the lens 22+the diaphragm 23, which achieves the effect of cutting off the flare, as shown in fig. 8. In order to achieve better optical effects, the diaphragm 23 may have a function of absorbing and eliminating stray light in black, or the diaphragm 23 may be made of a material having a function of absorbing and eliminating stray light in black. The lens 22 may be a small-angle converging lens, and the lens 22 may converge the angle at which the light-emitting unit 21 diverges originally, as shown in fig. 9, so that the outgoing luminous flux of the light-emitting unit 21 may be at least increased from 25% to 75%. Preferably, the lens 22 is hemispherical in shape, but any other lens shape that can achieve a light converging function is possible, and the present invention is not particularly limited.
The light emitting unit 21 may be an LED or other light emitting device. In an embodiment of the present invention, if the required light intensity is high and is difficult to reach by only one light emitting unit 21, a plurality of light emitting units 21 may be provided in one light emitting assembly 20 to form one light emitting unit group to provide higher light intensity.
The optical system design of the lens and the diaphragm can be used alone or added to other lamps to realize an optical effect different from that of the conventional backlight. That is, the backlight provided in this embodiment may be a separate lamp or may be only a part of a lamp, which is not particularly limited in the present invention.
In one embodiment of the present invention, in order to achieve diversified optical effects, when the light emitting assembly 20 is disposed on the lamp housing 10, any one of the following manners may be adopted:
a plurality of light emitting modules 20 are annularly and equidistantly arranged around the central axis of the lamp housing 10;
the plurality of light emitting assemblies 20 are arranged around the central axis of the lamp housing 10 in a plurality of concentric annular shapes at equal intervals;
arranging a plurality of light emitting assemblies 20 in a semi-annular shape at equal intervals around one side of the central axis of the lamp housing 10;
the plurality of light emitting modules 20 are disposed in a plurality of semi-annular shapes at equal intervals around one side of the central axis of the lamp housing 10.
The manner of disposing the light emitting assembly 20 on the lamp housing 10 according to the present embodiment can obtain a plurality of optical patterns with different styles, thereby meeting the requirements of different users. Of course, the several ways described above are just a few preferred ways in which several more aesthetically pleasing optical patterns may be created. In practice, the light emitting assembly 20 is provided in a very large number of ways in the lamp housing 10, which is not an example of the present invention.
In the implementation of the above embodiment, the following structure may be adopted: as shown in fig. 10, the lamp housing 10 may be disposed at the bottom of the backlight, the lamp housing 10 is bowl-shaped, and a table having a plurality of trapezoid sides, each of which may be provided with a light emitting assembly 20, is disposed on the bottom surface thereof. In order to facilitate the installation of the light emitting unit (group) 21 and the lens 22, a sheet-shaped rectangular installation base 24 is arranged on each trapezoid side, the light emitting unit (group) 21 of the light emitting assembly 20 is arranged on the installation base 24, and the lens 22 of the light emitting assembly 20 is hemispherical and is closely arranged to the light emitting unit (group) 21. The diaphragms 23 of the light emitting components form a whole (i.e. an integrated large diaphragm 23), the whole is a table body which is hollow without bottom and has a plurality of trapezoid sides, at least one hole is formed on each trapezoid side of the table body, the top surface of the table body is polygonal, the bottom edge of the table body is circular, and the table body can be fastened to the lamp housing 10 through the circular bottom edge. The backlight is formed by combining the above components as shown in fig. 11.
The above-mentioned various ways of arranging the light emitting modules 20 can be realized based on the above-mentioned structure, and the difference between the ways is mainly that whether the light emitting unit 21 is arranged on only one side of the lamp housing 10 and whether the aperture is formed on only the trapezoidal side surface on one side of the table body formed by the diaphragm 23, and the positions and the number of the apertures are different. Taking the example that the plurality of light emitting components 20 are arranged on one side of the central axis of the lamp housing 10 in a plurality of semi-annular shapes at equal intervals, the arrangement is realized based on the structure, the light emitting units 21 can be arranged on one side of the lamp housing 10, the plurality of semi-annular shapes are arranged on one trapezoid side surface of the table body side on the bottom surface of the lamp housing 10, the plurality of light emitting units 21 are also arranged on the trapezoid side surface of the table body side formed by the diaphragm 23, the plurality of semi-annular shapes are also arranged on one trapezoid side surface of the table body formed by the diaphragm 23, the plurality of holes are arranged on the trapezoid side surface of the table body formed by the diaphragm 23, and the arranged light emitting units 21 are in one-to-one correspondence with the opened holes.
In order to achieve a more varied optical effect, in one embodiment of the present invention, the color of the light emitted by each light emitting assembly 20 may also be designed:
the colors of light emitted by the plurality of light emitting assemblies 20 may be the same;
the colors of the light emitted by the plurality of light emitting assemblies 20 may be different; or alternatively
The light emitting assemblies 20 may be divided into a plurality of groups, each group of light emitting assemblies emits light with the same color, and the light emitting assemblies of the plurality of groups emit light with different colors, for example, 8 light emitting assemblies 20 are divided into 4 groups, and each group of 2 light emitting assemblies 20 respectively adopts light with four colors of red, yellow, blue and green; the above 8 light emitting modules 20 may be divided into 2 groups, a group of 6 light emitting modules 20, a group of 2 light emitting modules 20, a group of 6 light emitting modules 20 using yellow light, a group of 2 light emitting modules 20 using white light, and so on.
The main current illumination light colors are white light and yellow light, and the backlight provided by the embodiment of the invention can be applicable to white light and yellow light, while in order to realize different optical effects, the backlight provided by the embodiment of the invention can actually use lights with various colors such as red, orange, yellow, green, cyan, blue, purple and the like. Based on the design rule provided by the embodiment, based on the lamplight with different colors, various optical patterns can be obtained.
Similarly, to achieve a more varied optical effect, in one embodiment of the present invention, the shape of the aperture in the diaphragm 23 of each light emitting assembly 20 may also be designed:
the aperture shapes on the diaphragms of the plurality of light emitting assemblies 20 may be identical;
the aperture shapes on the diaphragms of the plurality of light emitting assemblies 20 may be different; or alternatively
The plurality of light emitting modules 20 may be divided into a plurality of groups, each group having the same aperture shape on the aperture, and the aperture shapes of the plurality of groups of light emitting modules being different, for example, 8 light emitting modules 20 in total, 2 groups of 4 light emitting modules 20 in each group, one group using circular apertures, one group using square apertures, and so on.
Based on the above design rule, by designing the shape of the aperture on the diaphragm 23 of the light emitting assembly 20, a wider variety of optical patterns can be realized, and by changing the shape of the aperture on the diaphragm 23, the shape of the obtained luminance cut-off spot can be changed mainly. Based on the above design rules, optical patterns of various shapes can be obtained by appropriate combinations. Optionally, the shape of the aperture in the diaphragm may include: circular, semicircular, oval, square, triangular, diamond, trapezoidal, star-shaped, heart-shaped, irregular, or any other shape, the invention is not particularly limited.
Fig. 12 is a schematic view of an optical pattern formed by a backlight according to an embodiment of the present invention, wherein the optical pattern shown in fig. 12 is formed by arranging 2 light emitting modules 20 in a ring shape at equal intervals around the central axis of the lamp housing 10 (or symmetrically), and the aperture of the diaphragm 23 of each light emitting module 20 is circular in shape, so that white light is used.
Fig. 13 is a schematic view of an optical pattern formed by a backlight according to another embodiment of the present invention, wherein the optical pattern shown in fig. 13 is formed by arranging 4 light emitting modules 20 in a ring shape at equal intervals around the central axis of the lamp housing 10, and the aperture of the diaphragm 23 of each light emitting module 20 is circular in shape, using white light.
Fig. 14 is a schematic view of an optical pattern formed by a backlight according to still another embodiment of the present invention, wherein the optical pattern shown in fig. 14 is formed by arranging 5 light emitting modules 20 in a semi-ring shape at equal intervals around one side of the central axis of the lamp housing 10 (or asymmetrically arranged), and the aperture of the diaphragm 23 of each light emitting module 20 is circular in shape, and white light is used.
Fig. 15 is a schematic view of an optical pattern formed by a backlight according to still another embodiment of the present invention, the optical pattern shown in fig. 15 being formed on the condition that 8 light emitting modules 20 are arranged around a central axis of a lamp housing 10 in a ring shape at equal intervals, and the aperture of a diaphragm 23 of each light emitting module 20 is circular in shape, using white light.
Fig. 16 is a schematic view of an optical pattern formed by a backlight according to still another embodiment of the present invention, the optical pattern shown in fig. 16 is formed on the condition that 4 light emitting modules 20 are arranged around the central axis of the lamp housing 10 in a ring shape at equal intervals, and the aperture of the diaphragm 23 of each light emitting module 20 is diamond-shaped, using white light.
Fig. 17 is a schematic view of an optical pattern formed by a backlight according to still another embodiment of the present invention, the optical pattern shown in fig. 17 being formed on the condition that 4 light emitting modules 20 are disposed around the central axis of the lamp housing 10 in a ring shape at equal intervals, the aperture on the diaphragm 23 of each light emitting module 20 being shaped as shown in fig. 18, white light being used.
In the embodiments shown in fig. 12 to 17 described above, light of any other color than white light may be used, and the present invention is not particularly limited.
In one embodiment of the present invention, the light emitting assemblies 20 may be divided into a plurality of groups, each group of light emitting assemblies 20 may be independently turned on or off, and the brightness and color temperature of each group of light emitting assemblies 20 may be independently adjustable.
The technical solution provided in this embodiment groups the light emitting assemblies 20, and independently turns on or off each group of light emitting assemblies 20, so that one backlight can realize multiple different optical patterns, thereby further improving user experience. In the present embodiment, the grouping for independent control is independent of the grouping for the color of light and the shape of the aperture in the diaphragm 23, which are not related to the above. For example, a backlight comprising 8 light emitting modules 20 arranged in a ring shape at equal intervals around the central axis of the lamp housing 10 (or symmetrically), the aperture of the diaphragm 23 of each light emitting module 20 is circular in shape, and white light is used, and the 8 light emitting modules 20 are independently controlled in 4 groups, the backlight can realize three optical patterns shown in fig. 12, 13 and 15, respectively.
The technical scheme of the invention provides a backlight (modeling) lamp, wherein an optical element comprises a light-emitting unit, a lens, a diaphragm and a lamp shell. The backlight (modeling) lamp realizes a light spot with cut-off brightness, and the optical effect of cut-off light spot plus overlapping is obtained through arrangement. The aperture is adopted for obtaining the light spot with the cut-off brightness, and the optical efficiency of the system is reduced to a certain extent due to the arrangement of the aperture, so that the lens (small-angle converging lens) is arranged, and the optical efficiency of the system is greatly improved. The backlight (modeling) lamp can realize optical patterns with bright and dark contrast and strong stereoscopic impression, has a simple optical structure and is suitable for mass production.
In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be construed as reflecting the intention that: i.e., the claimed invention requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
Those skilled in the art will appreciate that the modules in the apparatus of the embodiments may be adaptively changed and disposed in one or more apparatuses different from the embodiments. The modules or units or components of the embodiments may be combined into one module or unit or component and, furthermore, they may be divided into a plurality of sub-modules or sub-units or sub-components. Any combination of all features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or units of any method or apparatus so disclosed, may be used in combination, except insofar as at least some of such features and/or processes or units are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features but not others included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.
Various component embodiments of the invention may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art will appreciate that some or all of the functions of some or all of the components in a backlight according to embodiments of the invention may be implemented in practice using a microprocessor or Digital Signal Processor (DSP). The present invention can also be implemented as an apparatus or device program (e.g., a computer program and a computer program product) for performing a portion or all of the methods described herein. Such a program embodying the present invention may be stored on a computer readable medium, or may have the form of one or more signals. Such signals may be downloaded from an internet website, provided on a carrier signal, or provided in any other form.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, third, etc. do not denote any order. These words may be interpreted as names.
By now it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described herein in detail, many other variations or modifications of the invention consistent with the principles of the invention may be directly ascertained or inferred from the present disclosure without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.
Claims (12)
1. A backlight for directing light toward an imaging surface for illumination by reflection from the imaging surface, comprising: the lamp comprises a lamp shell and a light-emitting assembly arranged on the lamp shell, wherein the light-emitting assembly comprises a light-emitting unit and a diaphragm, and a central axis of the light-emitting unit and a central axis of the lamp shell form a preset angle; wherein the method comprises the steps of
The light-emitting component is used for forming a brightness cut-off light spot;
the plurality of light-emitting assemblies are arranged around the central axis of the lamp housing, the central axis of each light-emitting unit forms a preset angle with the central axis of the lamp housing, and the preset angle is 20-40 degrees so as to obtain an overlapped backlight effect; and is also provided with
The center axis of the aperture on the diaphragm is offset from the center axis of the light emitting unit by a predetermined distance.
2. The backlight of claim 1, wherein the light emitting assembly further comprises a lens disposed between the light emitting unit and the diaphragm along a central axis of the light emitting unit, both ends of the aperture on the diaphragm forming an angle with the light emitting unit that is less than or equal to a maximum convergence angle of the lens.
3. The backlight of claim 2, wherein the plurality of light emitting assemblies are arranged in one of:
the plurality of luminous assemblies are annularly and equidistantly arranged around the central shaft of the lamp shell;
the plurality of luminous assemblies are arranged around the central shaft of the lamp shell in a plurality of concentric annular equidistant modes;
the plurality of luminous assemblies are arranged at one side of the central shaft of the lamp shell at equal intervals in a semi-annular shape;
the plurality of luminous assemblies are arranged at equal intervals around one side of the central shaft of the lamp shell in a plurality of semi-annular shapes.
4. A backlight as claimed in claim 3, wherein the diaphragms of the light emitting modules form a unitary body, the unitary body being a bottomless hollow table body having a plurality of trapezoidal sides, at least one aperture in each trapezoidal side of the table body, the top surface of the table body being polygonal and the bottom edge being circular.
5. The backlight of claim 4, wherein the lamp housing is located at the bottom of the backlight, the lamp housing is bowl-shaped, a table body having a plurality of trapezoid sides is disposed on the bottom surface of the lamp housing, and the table body formed by the diaphragms of the plurality of light emitting assemblies is fastened to the lamp housing through the circular bottom edges of the table body.
6. The backlight of claim 5, wherein a rectangular mounting base having a shape of a sheet is provided on each of the trapezoidal sides of the stage having a plurality of trapezoidal sides provided on the bottom surface of the lamp housing, the light emitting unit of the light emitting assembly is provided on the mounting base, and the lens of the light emitting assembly is hemispherical and is disposed closely to the light emitting unit.
7. The backlight as claimed in claim 2, wherein,
the colors of the lights emitted by the light emitting components are the same;
the colors of the lights emitted by the light emitting components are different; or alternatively
The light-emitting components are divided into a plurality of groups, the colors of the lights emitted by the light-emitting components in each group are the same, and the colors of the lights emitted by the light-emitting components in each group are different.
8. The backlight as claimed in claim 2, wherein,
the aperture shapes of diaphragms of the plurality of light-emitting components are the same;
the aperture shapes of the diaphragms of the light emitting components are different; or alternatively
The light-emitting components are divided into a plurality of groups, the aperture shapes of the diaphragms of each group of light-emitting components are the same, and the diaphragms of the plurality of groups of light-emitting components are different.
9. The backlight of claim 8, wherein the shape of the aperture in the diaphragm comprises at least one of: circular, semicircular, oval, square, triangular, diamond, trapezoidal, star-shaped, heart-shaped, or irregular.
10. The backlight of any of claims 1-9, wherein the plurality of light emitting assemblies are divided into a plurality of groups, each group of light emitting assemblies being independently turned on or off, and each group of light emitting assemblies being adjustable in brightness and color temperature.
11. The backlight according to any one of claims 1-9, wherein the light emitting assembly comprises a plurality of light emitting units forming a group of light emitting units.
12. The backlight according to any one of claims 1-9, wherein the distance from the light emitting unit to the plane in which the diaphragm is located is h1, the width of the aperture on the diaphragm is S1, the distance from the light emitting unit to the imaging surface is h2, and the imaging width is S2, then h1:s1=h2:s2.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610067344.3A CN105605484B (en) | 2016-01-29 | 2016-01-29 | Backlight lamp |
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| CN201610067344.3A CN105605484B (en) | 2016-01-29 | 2016-01-29 | Backlight lamp |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106195782B (en) * | 2016-08-12 | 2018-09-18 | 东莞市闻誉实业有限公司 | Public lighting lamp |
| CN106195807B (en) * | 2016-08-12 | 2019-01-22 | 东莞市闻誉实业有限公司 | Embedded wall lamp |
| CN106224849B (en) * | 2016-08-12 | 2019-06-28 | 东莞市闻誉实业有限公司 | Tubular household lamp |
| CN111536475A (en) * | 2020-05-16 | 2020-08-14 | 杭州杰辉灯饰有限公司 | Combined modeling decorative lamp |
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