CN107435850B - Wide-angle illumination light source - Google Patents

Wide-angle illumination light source Download PDF

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Publication number
CN107435850B
CN107435850B CN201610362324.9A CN201610362324A CN107435850B CN 107435850 B CN107435850 B CN 107435850B CN 201610362324 A CN201610362324 A CN 201610362324A CN 107435850 B CN107435850 B CN 107435850B
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China
Prior art keywords
light
wide
angle illumination
illumination source
light emitting
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CN201610362324.9A
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CN107435850A (en
Inventor
郑崇华
林来诚
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Delta Optoelectronics Inc
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Delta Optoelectronics Inc
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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
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/0008—Reflectors for light sources providing for indirect lighting
    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F21V7/041—Optical design with conical or pyramidal surface

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

A wide-angle illumination source comprises a light emitting element, a divergent light system and a light collecting system. The light emitting element is used for providing light. The divergent light system has a width that substantially tapers towards the light emitting element. The light collecting system is arranged between the light emitting element and the light diverging system. The light collecting system is used for collecting the light of the light emitting element to the light diverging system, and the light diverging system is used for projecting the light passing through the light collecting system to the projection surface. The light emitting element is arranged between the projection surface and the divergent light system.

Description

Wide-angle illumination light source
Technical Field
The present disclosure relates to a wide-angle illumination light source, and more particularly, to an illumination light source with wide-angle illumination and uniform illumination.
Background
In recent years, indirect lighting has been widely used in interior design and architectural decoration. Compared with the direct lighting bright and dazzling light, the indirect lighting can generate softer light, so that people feel relaxed. However, indirect lighting can improve the comfort of the space, but has the disadvantages of poor lighting efficiency, small lighting angle range, uneven lighting, and complex decorative structure.
In addition, the outdoor large advertisement billboard is generally directly irradiated by a light source to achieve the purpose of illumination. The light sources need to be mounted far from the sign to achieve a more uniform illumination area, however, multiple sets of light sources are required to achieve the desired brightness. Even if a plurality of groups of light sources irradiate in a long-distance mode, the problem of uneven irradiation area still exists.
Disclosure of Invention
The disclosure provides a wide-angle illumination light source, which includes a light emitting element, a divergent light system and a light collecting system. The light emitting element is used for providing light. The divergent light system has a width that substantially tapers towards the light emitting element. The light collecting system is arranged between the light emitting element and the light diverging system. The light collecting system is used for collecting the light of the light emitting element to the light diverging system, and the light diverging system is used for projecting the light passing through the light collecting system to a projection surface. The light emitting element is arranged between the projection surface and the divergent light system.
In one or more embodiments, greater than 70% of the light passing through the collection system is incident on the divergent system.
In one or more embodiments, the divergent light system has an aspheric reflective surface facing the light emitting element.
In one or more embodiments, the diverging optical system is a conical reflecting element. The apex of the conical reflective element faces the light emitting element.
In one or more embodiments, a cross section from the apex of the conical reflective element to the base of the conical reflective element has at least one curved side.
In one or more embodiments, greater than 70% of the light provided by the light emitting elements is incident on the light collection system.
In one or more embodiments, the light collection system includes a convex lens, a concave lens, a compound parabolic concentrator, or a combination thereof.
In one or more embodiments, the light emitting element is located on an optical axis of the light collecting system.
In one or more embodiments, the wide-angle illumination source further comprises a reflective structure disposed at least between the light-emitting element and the light-collecting system and between the light-collecting element and the divergent light system.
In one or more embodiments, the light emitting element is disposed offset from an optical axis of the light collecting system.
In one or more embodiments, the reflective structure has a plurality of through holes for embedding the light collecting system and the light diverging system.
In one or more embodiments, the light collecting system has at least one contact surface. The light collecting system is fixed on the reflecting structure through a contact surface, and an optical axis of the light collecting system is positioned on the contact surface.
In one or more embodiments, the divergent light system has a contact surface. The divergent light system is fixed on the reflecting structure through the contact surface. The optical axis of the light collecting system is positioned on the contact surface.
In one or more embodiments, the wide-angle illumination source further comprises a lamp holder. The light emitting element, the light emitting system and the light collecting system are all fixed on the lamp bracket. The lamp holder is used for fixing the light-emitting element, the light-diverging system and the light-collecting system to the projection surface.
In one or more embodiments, the lamp holder includes a fixing portion and a supporting portion. The fixing part is arranged on the projection surface, and the support part fixes the divergent light system on the fixing part.
In one or more embodiments, the fixed portion has an accommodating space, the light emitting device and the light collecting system are disposed in the accommodating space, and a portion of the light collecting system is exposed from the accommodating space.
In one or more embodiments, the divergent light system includes a base, and opposite ends of the supporting portion are respectively fixed to the base and the fixing portion.
In one or more embodiments, the wide-angle illumination light source further includes a reflective structure disposed at least between the light emitting device and the light collecting system and between the light collecting device and the light diverging system, and the reflective structure is fixed to the lamp holder.
The wide-angle illumination light source of the above embodiment can effectively project the light of the light emitting element to the projection surface to generate uniform light with a wide area.
Drawings
Fig. 1 is a schematic view of a wide-angle illumination light source and a projection surface according to an embodiment of the disclosure.
FIG. 2 is a cross-sectional view of some embodiments of the divergent light system of FIG. 1.
Fig. 3 is a cross-sectional view of the light emitting element of fig. 1.
FIG. 4 is a graph of simulated illumination intensity on a projection surface according to the parameters of Table one and paragraph [0027 ].
Fig. 5 is a schematic view of a wide-angle illumination source and a projection surface according to another embodiment of the disclosure.
Fig. 6 is a front view of the reflective structure of fig. 5.
Fig. 7 is a schematic view of a wide-angle illumination source and a projection surface according to yet another embodiment of the disclosure.
Fig. 8 is a graph showing simulated illumination brightness of the wide-angle illumination light source of fig. 5 on a projection surface.
Fig. 9 is a schematic view of a wide-angle illumination source and a projection surface according to still another embodiment of the disclosure.
Fig. 10 is an exploded view of the wide-angle illumination source of fig. 9.
Fig. 11 is a schematic view of a wide-angle illumination source and a projection surface according to another embodiment of the disclosure.
Description of reference numerals:
110: light-emitting element 130: light collecting system
112: light rays 132, 134: convex lens
114: light-emitting diode chip 140: reflection structure
115: wires 142, 144, 146: through hole
116: a bracket 150: lamp bracket
118: packaging material 152: fixing part
119: wavelength converting material 153: containing space
120: divergent light system 154: supporting part
122: reflection surfaces 155a, 155 b: terminal end
124: bottom 900: projection surface
125: section O: optical axis
126: side edge P: vertex point
128: a base W: width of
129. 133, 135: contact surface
Detailed Description
In the following description, numerous implementation details are set forth in order to provide a more thorough understanding of the present disclosure. It should be understood, however, that these implementation details should not be used to limit the disclosure. That is, in some embodiments of the disclosure, such practical details are not necessary. In addition, some conventional structures and elements are shown in simplified schematic form in the drawings.
Fig. 1 is a schematic diagram of a wide-angle illumination source and a projection surface 900 according to an embodiment of the disclosure. The wide-angle illumination source includes a light emitting element 110, a divergent light system 120, and a light collecting system 130. The light emitting device 110 is used for providing light 112. The diverging light system 120 has a width W that substantially tapers towards the light emitting element 110. The light collecting system 130 is disposed between the light emitting element 110 and the diverging light system 120. The light collecting system 130 is used for collecting the light 112 of the light emitting element 110 to the light diverging system 120, and the light diverging system 120 is used for projecting the light 112 passing through the light collecting system 130 to a projection surface 900. The light emitting element 110 is disposed between the projection surface 900 and the divergent light system 120.
For clarity, only a portion of the path of the light 112 is shown in FIG. 1. In addition, the light collecting system 130 can be transparent, so the light 112 can pass through the inside of the light collecting system 130, and the light diverging system 120 can have a reflecting surface 122 (described in detail later), so the light 112 illustrated in fig. 1 is reflected on the surface of the light diverging system 120 (i.e., the reflecting surface 122).
As used herein, the term "substantially" is intended to modify any relationship of minor variations, which do not alter the substance of the term. For example, the description of "diverging light system 120 has a width W substantially tapering toward light emitting device 110", which means that the width W of diverging light system 120 actually tapers toward light emitting device 110, as long as the width W of diverging light system 120 substantially tapers toward light emitting device 110, the width W of diverging light system 120 may also increase slightly and then decrease, or decrease slightly and then increase in some sections of diverging light system 120.
The wide-angle illumination light source of the present embodiment can effectively project the light 112 of the light emitting element 110 onto the projection surface 900 to generate a uniform and wide-angle illumination area. Specifically, the light 112 provided by the light emitting element 110 is incident on the light collecting system 130. The light collection system 130 collects the light 112, i.e., the light 112 transmitted through the light collection system 130 has a smaller divergence angle than the light 112 incident on the light collection system 130. Such a structure can effectively condense the light 112 provided by the light emitting element 110 to the divergent light system 120, so as to improve the use efficiency of the light 112. Then, the light 112 passing through the light collecting system 130 is incident on the light diverging system 120, and the light diverging system 120 reflects the light 112 to the projection surface 900 behind the light emitting element 110. Since the divergent light system 120 has a width W substantially tapered toward the light emitting element 110, the divergent angle of the light 112 can be increased to increase the illumination area of the light 112. The light 112 projected onto the projection surface 900 can be diffused to achieve indirect illumination. In this way, with the wide-angle illumination light source of the present embodiment, a wide and uniform illumination area can be generated on the projection surface 900 in a short distance.
In some embodiments, more than 70% of the light 112 provided by the light emitting element 110 is incident on the light collecting system 130, i.e., the light collecting system 130 collects most of the light 112 provided by the light emitting element 110, so that the light collecting system 130 can collect and guide most of the light 112 to the diverging light system 120. In addition, since the light collecting system 130 collects the light 112, more than 70% of the light 112 passing through the light collecting system 130 is incident on the diverging light system 120, so that the diverging light system 120 can effectively guide most of the light 112 to the projection surface 900.
Next, a specific structure of the divergent light system 120 in some embodiments is described. In fig. 1, the divergent light system 120 has an aspheric reflective surface 122 facing the light emitting device 110 and the light collecting system 130. The reflective surface 122 is used for reflecting the light 112 to the projection surface 900. The reflecting surface 122 can be designed according to actual requirements, such that the reflecting surface 122 is aspheric, so as to generate a uniform illumination area on the projecting surface 900.
Fig. 2 is a cross-sectional view of some embodiments of the divergent light system 120 of fig. 1. For example, diverging light system 120 may be a conical reflective element, such as a conical reflective element or a polygonal conical reflective element, although the disclosure is not limited thereto. The conical reflective element has an apex P and a base 124 opposite to each other, with the apex P facing the light emitting element 110 (shown in fig. 1). In the present embodiment, the width W of the divergent light system 120 is defined as the diameter of each cross section substantially parallel to the plane of the bottom 124. For example, the width W indicated in fig. 2 is the diameter of the face of the base 124. In fig. 2, the diameter of each cross section of the conical reflective element substantially tapers towards the apex P.
To further create a uniform illumination area, the curvature of the sides of the conical reflective element can be designed. In FIG. 2, a cross-section 125 from the apex P of the conical reflective element to the base 124 of the conical reflective element has at least one curved side 126. In other words, the side 126 is non-linear. In some embodiments, the side edge 126 may be curved toward the outside of the conical reflective element (as shown in fig. 2), curved toward the inside of the conical reflective element, or wavy or irregular, depending on the actual requirements. The shape of the divergent light system 120 of fig. 2 is merely exemplary and not intended to limit the present disclosure. One skilled in the art can design the shape of the diverging light system 120 flexibly according to the actual requirement.
Please return to fig. 1. In some embodiments, the light emitting element 110 is located on the optical axis O of the light collecting system 130, in other words, the optical axis O of the light collecting system 130 passes through the light emitting element 110, such an arrangement can obtain a more symmetrical illumination area on the projection surface 900, for example, can be applied to indoor illumination, and thus the projection surface 900 can be a ceiling or a wall surface. In addition, the divergent light system 120 may also be located on the optical axis O of the light collecting system 130, that is, the light emitting device 110, the light collecting system 130 and the divergent light system 120 may be arranged in a straight line.
In addition, the light collecting system 130 includes at least one lens, such as two convex lenses 132 and 134, as shown in FIG. 1. However, in other embodiments, the light collection system 130 may include a convex lens, a concave lens, a Compound Parabolic Concentrator (CPC), or a combination thereof. Basically, it is within the scope of the present disclosure as long as the light 112 provided by the light emitting element 110 can be collected to guide the light 112 onto the reflecting surface 122 of the diverging light system 120. In some embodiments, the surfaces of the convex lenses 132, 134 may be spherical, aspherical, or free-form, as the case may be.
In some embodiments, the light emitting element 110 can be a light emitting diode, a laser, or other suitable light emitting source. For example, please refer to fig. 3, which is a cross-sectional view of the light emitting device 110 of fig. 1. The light emitting device 110 of fig. 3 is a light emitting diode module, which includes a light emitting diode chip 114, a support 116 and a package material 118. The led chip 114 can be electrically connected to the support 116 by a wire 115, and the package material 118 covers the led chip 114. The encapsulant 118 can protect the led chip 114, and can be designed in different shapes to adjust the light-emitting direction of the led chip 114. In some embodiments, the encapsulant 118 includes a wavelength conversion material 119, such as a phosphor or a quantum dot material. The light emitted from the led chip 114 can be absorbed by the wavelength conversion material 119, and the wavelength conversion material 119 emits light of other colors, so as to change the color of the led module. The structure of the light emitting device 110 in fig. 3 is merely an example and is not intended to limit the disclosure. One of ordinary skill in the art can flexibly select the structure of the light emitting device 110 according to actual requirements.
In one embodiment, the parameters of the light collecting system 130 and the light diverging system 120 can be designed to achieve the purpose of generating a wide and uniform illumination area. The first table shows the parameter values of each element of the present disclosure, which includes the curvature radius of the surface of each element of fig. 1 (sequentially from the light emitting element 110 to the reflection surface 122 of the diverging light system 120 from surface 1 to surface 6, that is, the light emitting surface of the light emitting element 110 is surface 1, the surface of the convex lens 132 of the light collecting system 130 close to the light emitting element 110 is surface 2, the surface of the convex lens 132 of the light collecting system 130 close to the convex lens 134 is surface 3, the surface of the convex lens 134 of the light collecting system 130 close to the convex lens 132 is surface 4, the surface of the convex lens 134 of the light collecting system 130 close to the diverging light system 120 is surface 5, and the reflection surface 122 of the diverging light system 120 is surface 6), the distance (or thickness) between each surface and the next surface, the refractive index and the abbe number. In addition, the coordinates of the surfaces 2 to 4 are expressed by equation (1), which includes coefficients k, a2, a4 to a16, c representing curvature; and the surface 5 is represented by equation (2), which includes coefficients B1, B2 through B8.
z＝B1r+B2r2+B3r3+B4r4+B5r5+B6r6+B7r7+B8r8
(2)
Table one: values of parameters of elements
In this embodiment, B1 ═ 0.35233, B2 ═ 0.06588, B3 ═ 1.524E-03, B4 ═ 2.417E-04, B5 ═ 6.918E-06, B6 ═ 1.215E-07, B7 ═ 1.202E-09, and B8 ═ 4.847E-12. The area of the light emitting surface (i.e., surface 1) of the light emitting element 110 is 4 mm × 4 mm. FIG. 4 is a graph of simulated illumination intensity on a projection surface according to the parameters of Table one and paragraph [0027], where the wide-angle illumination source is located at the origin (i.e., coordinate (0, 0)).
Referring to fig. 5 and fig. 6, fig. 5 is a schematic diagram of a wide-angle illumination source and a projection plane 900 according to another embodiment of the disclosure, and fig. 6 is a front view of the reflection structure 140 of fig. 5. In this embodiment, the wide-angle illumination source further includes a reflective structure 140 at least disposed between the light emitting device 110 and the light collecting system 130 and between the light collecting system 130 and the light diverging system 120. For example, as shown in fig. 6, the reflecting structure 140 may be a mirror having a plurality of through holes 142, 144 and 146 for embedding the light collecting system 130 and the light diverging system 120. In detail, the convex lens 132 of the light collecting system 130 is inserted into the through hole 142, the convex lens 134 of the light collecting system 130 is inserted into the through hole 144, and the diverging light system 120 is inserted into the through hole 146.
However, the fixed relationship between the reflective structure 140 and other elements is not limited to fig. 5 and 6. Fig. 7 is a schematic diagram of a wide-angle illumination source and a projection surface 900 according to yet another embodiment of the disclosure. In fig. 7, the light collecting system 130 and the light diverging system 120 can be cut (for example, the portion of the light collecting system 130 and the light diverging system 120 located on the left half of the reflective structure 140 in fig. 5 is cut), and then the portion of the light collecting system 130 and the light diverging system 120 on the right half can be fixed on the reflective structure 140. In detail, the convex lens 132 of the light collecting system 130 has a contact surface 133, and the contact surface 133 can be a cut surface obtained by cutting the convex lens 132 of fig. 5 into half. The convex lens 134 of the light collecting system 130 has a contact surface 135, and the contact surface 135 can be a cut surface obtained by cutting the convex lens 134 of FIG. 5 into half. The convex lens 132 is fixed to the reflecting structure 140 by a contact surface 133, and the convex lens 134 is fixed to the reflecting structure 140 by a contact surface 135. And the optical axis O of the light collecting system 130 is located on the contact surface 133 and/or the contact surface 135. On the other hand, the divergent light system 120 has a contact surface 129, and the contact surface 129 may be a cut surface that cuts the divergent light system 120 of fig. 5 into half. The divergent light system 120 is secured to the reflective structure 140 by a contact surface 129. The optical axis O of the light collecting system 130 may be located on the contact surface 129.
In fig. 5 and 7, after the reflection structure 140 is added, the light 112 originally intended to propagate to the left side of fig. 5 and 7 can be reflected to the right side by the reflection structure 140 and then hit the projection plane 900. In this way, the light 112 can be intensively irradiated to the right projection surface 900. In addition, to increase the utilization efficiency of the light 112, the light emitting element 110 may be disposed offset from the optical axis O of the light collecting system 130, for example, to the right side of fig. 5 and 7. In this way, the light 112 propagating to the left side of the light emitting device 110 can be reflected to the right side by the reflective structure 140. The wide-angle illumination light source of the present embodiment can be applied to an outdoor advertisement viewing plate, for example, the wide-angle illumination light source can be disposed at the edge of the advertisement viewing plate and obliquely hit the advertisement viewing plate, that is, the projection surface 900 is the advertisement viewing plate. Because the wide-angle illumination light source can provide a wide and uniform illumination area, a small number (for example, one) of wide-angle illumination light sources can illuminate the whole advertising board, and the energy-saving effect is achieved. Fig. 8 is a graph of simulated illumination intensity of the wide-angle illumination source of fig. 5 on a projection surface 900, where the wide-angle illumination source is located at the origin (i.e., at coordinates (0, 0)). Since other structural details of the embodiments of fig. 5 and 7 are the same as those of the embodiment of fig. 1, they are not repeated.
Referring to fig. 9 and 10, fig. 9 is a schematic view of a wide-angle illumination light source and a projection plane 900 according to still another embodiment of the disclosure, and fig. 10 is an exploded view of the wide-angle illumination light source of fig. 9. In this embodiment, the wide-angle illumination source further comprises a lamp holder 150. The light emitting device 110, the divergent light system 120 and the light collecting system 130 are all fixed on the lamp holder 150. The lamp holder 150 is used to fix the light emitting element 110, the divergent light system 120 and the light collecting system 130 to the projection surface 900. In detail, the lamp holder 150 may include a fixing portion 152 and at least one supporting portion 154. For example, in the present embodiment, there are three support portions 154, but the disclosure is not limited thereto. The fixing portion 152 is fixed on the projection surface 900 and has an accommodating space 153. The light emitting device 110 and the light collecting system 130 are disposed in the accommodating space 153, and a portion of the light collecting system 130 is exposed from the accommodating space 153. The supporting portion 154 fixes the diverging light system 120 to the fixing portion 152, thereby fixing the distance between the diverging light system 120 and the light collecting system 130. For example, the divergent light system 120 further includes a base 128, and opposite ends 155a and 155b of each supporting portion 154 are respectively fixed to the base 128 and the fixing portion 152 of the divergent light system 120. However, the structure of the lamp holder 150 of the present embodiment is only an example and is not intended to limit the present disclosure. Those skilled in the art can design the structure of the lamp holder 150 flexibly according to the actual requirement. In other embodiments, the reflective structure 140 can be secured to the lamp holder 150 (as shown in FIG. 11) to achieve the illuminated area shown in FIG. 6. Since other structural details of the embodiment of fig. 9 to 11 are the same as those of the embodiment of fig. 1, they are not repeated.
In summary, the wide-angle illumination light source of the above embodiments utilizes the light collecting system to collect the light of the light emitting device, and the light collecting system guides the light to the light diverging system, so that the utilization efficiency of the light can be increased, and a wide and uniform light can be generated on the projection surface in a short distance. Furthermore, a reflection structure can be added to control the range and direction of the irradiation area, and the light can be reused by utilizing the reflection of the reflection structure. In addition, the lamp holder can fix the light emitting element, the light diverging system and the light collecting system on the projection surface, and has a simple structure, so that the assembly time and cost can be simplified.
Although the present disclosure has been described with reference to the above embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the disclosure, and therefore, the scope of the disclosure should be determined by that defined in the appended claims.

Claims (17)

1. A wide-angle illumination source, comprising:
a light emitting element for providing a light;
a light emitting system having a width substantially tapered toward the light emitting element; and
a light collecting system disposed between the light emitting device and the light diverging system, the light collecting system is used for collecting the light of the light emitting device to the light diverging system, the light diverging system is used for projecting the light passing through the light collecting system to a projection surface, the light emitting device is disposed between the projection surface and the light diverging system,
the wide-angle illumination light source also comprises a reflecting structure which is at least arranged between the light-emitting element and the light collecting system and between the light collecting system and the divergent light system.
2. The wide-angle illumination source of claim 1, wherein greater than 70% of the light passing through the collection optics is incident on the divergent optics.
3. The wide-angle illumination source of claim 1, wherein the divergent light system has an aspheric reflective surface facing the light emitting element.
4. The wide-angle illumination source of claim 1, wherein the divergent light system is a conical reflective element with the apex facing the light emitting element.
5. The wide-angle illumination source of claim 4, wherein a cross-section from the apex of the conical reflective element to the base of the conical reflective element has at least one curved side.
6. The wide-angle illumination source of claim 1, wherein greater than 70% of the light provided by the light-emitting element is incident on the collection optics.
7. The wide-angle illumination source of claim 1, wherein the collection optics comprises a convex lens, a concave lens, a compound parabolic concentrator, or combinations thereof.
8. The wide-angle illumination source of claim 1, wherein the light-emitting element is located on an optical axis of the collection system.
9. The wide-angle illumination source of claim 1, wherein the light-emitting element is disposed offset from an optical axis of the collection system.
10. The wide-angle illumination source of claim 1, wherein the reflective structure has a plurality of through holes for embedding the light collecting system and the light diverging system.
11. The wide-angle illumination source of claim 1, wherein the collection optics has at least one contact surface through which the collection optics is secured to the reflective structure, an optical axis of the collection optics being located at the contact surface.
12. The wide-angle illumination source of claim 1, wherein the diverging light system has a contact surface through which the diverging light system is fixed to the reflecting structure, an optical axis of the light collecting system being located at the contact surface.
13. The wide-angle illumination source of claim 1, further comprising a holder, wherein the light emitting device, the light diverging system, and the light collecting system are fixed to the holder, and the holder is used to fix the light emitting device, the light diverging system, and the light collecting system to the projection surface.
14. The wide-angle illumination source of claim 13, wherein the holder comprises a fixed portion on the projection surface and a supporting portion that fixes the divergent light system to the fixed portion.
15. The wide-angle illumination source of claim 14, wherein the fixing portion has a receiving space, the light emitting device and the light collecting system are disposed in the receiving space, and a portion of the light collecting system is exposed from the receiving space.
16. The wide-angle illumination source of claim 14, wherein the divergent light system comprises a base, opposite ends of the support portion being fixed to the base and the fixing portion, respectively.
17. The wide-angle illumination source of claim 13, wherein the reflective structure is affixed to the holder.
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CN103836412A (en) * 2012-11-22 2014-06-04 恩普乐股份有限公司 Lighting device
CN204647968U (en) * 2013-12-12 2015-09-16 皇家飞利浦有限公司 For reflect from the light of light source optical device and comprise the light fixture of optical device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101923205A (en) * 2009-06-16 2010-12-22 台达电子工业股份有限公司 Wide-angle projection optical system
CN103836412A (en) * 2012-11-22 2014-06-04 恩普乐股份有限公司 Lighting device
CN204647968U (en) * 2013-12-12 2015-09-16 皇家飞利浦有限公司 For reflect from the light of light source optical device and comprise the light fixture of optical device

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