TW201312049A - Multiple light source module - Google Patents

Abstract

A multiple light source module includes a light source and a lens set. The lens set is disposed at a light-emitting direction of the light source. The lens set includes a column lens and a first conic lens. The column lens has a first end face and a second end face opposite to the first end face. The first end face is adjacent to the source. The second end face converges inward from its peripheraland is shaped as an awl to be a first reflecting surface. The first conic lens is stacked on the column lens and each has a third end face and a fourth end face opposite to the third end face. The third end face is disposed on the second end face and has a shape matched with the first reflecting surface. The fourth end face converges inward from its peripheral and is shaped as an awl to be a second reflecting surface.

Description

Multi-point light source module

The invention relates to a light source module, and in particular to a multi-point light source module.

Light-emitting diode (LED) is a point light source that emits electroluminescence from a semiconductor material. It has the advantages of long life, low temperature, high energy efficiency, etc. In recent years, light-emitting diodes have been widely used in screen backlights. Table lamps, large display panels, traffic signs, vehicle lights, power indicators, etc. Traditional light sources have gradually been replaced by light-emitting diodes.

Since the light-emitting diode is a point light source, if it is to be a surface light source, it is necessary to use a plurality of linearly arranged light-emitting diodes, a heat dissipation plate and a light guide plate. If it is to be a multi-point light source, it is necessary to use a plurality of vertically arranged light-emitting diodes. The body and the three-dimensional heat dissipation frame will encounter difficulties in circuit design or heat dissipation requirements, and cannot be the same as the circuit design of the general lamp, thereby increasing the cost of the lamp manufacturing.

The present invention relates to a multi-point light source module that utilizes a lens group that is structurally stackable with each other to produce a multi-point light source. Therefore, the light emitted by a single light source can be changed in light angle through the lens groups that are structurally stacked on each other, so as to improve the circuit design or heat dissipation requirements that the conventional multi-point light source must use when using multiple light-emitting diodes.

According to an aspect of the invention, a multi-point light source module is provided, comprising a light source and a lens group. The lens group is disposed in a light emitting direction of the light source. The lens group includes a cylindrical lens and a first tapered lens. The lenticular lens has a first end face and a second end face. The first end is adjacent to the light source. The second end surface is opposite to the first end surface. The second end surface is tapered inwardly from the outer circumference thereof to form a pyramid shape as a first reflecting surface. The first conical lens is stacked on the lenticular lens, and the first conical lens has a third end surface and a fourth end surface. The fourth end surface is opposite to the third end surface. The third end surface is disposed on the second end surface, and the third end surface and the outer shape of the first reflecting surface cooperate with each other. The fourth end surface tapers inwardly from the outer circumference thereof to form a pyramid shape as a second reflecting surface.

In order to better understand the above and other aspects of the present invention, the preferred embodiments are described below, and in conjunction with the drawings, the detailed description is as follows:

The multi-point light source module of this embodiment utilizes a lens group that can be stacked on each other to generate a multi-point light source. The lens group is disposed in a light exiting direction of the light source, and includes a cylindrical lens and at least one tapered lens. The light source is, for example, a light-emitting diode adjacent to an end surface of the lenticular lens to cause the light source to inject light into the lenticular lens. At least one tapered lens is stacked on the other end surface of the lenticular lens, and the tapered lens and the outer shape of the lenticular lens cooperate. In this embodiment, the light exit angle is changed by a lens group that is structurally stacked on each other, so that the light emitted by the single light source has the effect of a multi-point light source.

The following is a detailed description of various embodiments, which are intended to be illustrative only and not to limit the scope of the invention.

1A and 1B are respectively a schematic view showing the structure of a lamp according to an embodiment of the present invention, and FIG. 2A is a partially exploded perspective view of the multi-point light source module of FIG. 1B, and FIG. 2B is a view of FIG. 2A. Schematic diagram of the optical path of the multi-point light source module. Referring to FIGS. 1A and 1B , the multi-point light source module 100 , the lamp holder 132 , and the lamp cover 140 form a lamp structure 150 . The multi-point light source module 100 includes a light source 102 and a lens group 104. The lens group 104 is disposed in a light exiting direction of the light source 102. The socket 132 is used to fix the lens group 104 in the light exiting direction of the light source 102. The lamp cover 140 is fixed to the socket 132 and covers the lens group 104 in the lamp cover 140. In the present embodiment, the lamp cover 140 is used to increase the change of the appearance of the lamp. However, the present invention does not limit this. In addition, the multi-point light source module 100 can be directly exposed to the cover 140 without being covered by the lamp cover 140. The lamp holder 132 can be used for lighting and/or three-dimensional decoration.

Referring to FIG. 1A, the lens group 104 includes a lenticular lens 110 and a first tapered lens 120. In FIG. 1B, the lens group 104 may further include one or more second tapered lenses 130 having the same shape and structure as the first tapered lens 120, and may be sequentially stacked on the first tapered lens 120. . For the details of the second tapered lens 130, please refer to the following description of the first tapered lens 120. The lenticular lens 110 has a first end surface 112 and a second end surface 114. The second end surface 114 is opposite to the first end surface 112. The first end face 112 is adjacent to the light source 102 and faces a light exiting surface of the light source 102. The second end surface 114 tapers inwardly from its outer circumference to form a pyramid shape as a first reflecting surface 114a. From the 1A and 1B drawings, the first reflecting surface 114a is, for example, a circular vertex of a V-shaped tip.

In addition, the lenticular lens 110 also has a first outer annular surface 116 that surrounds the periphery of the first reflective surface 114a. The first reflecting surface 114a has a first top portion P1, see Fig. 2A. The angle θ1 of the first top portion P1 is between 60 and 120 degrees. In the present embodiment, the light source 102 is a point light source, and the light beams L1, L2 of the light source 102 can be incident into the lenticular lens 110 via the first end surface 112 of the lenticular lens 110. In FIG. 2B, after the partial light ray L1 is reflected by the first reflecting surface 114a, the first outer ring surface 116 is directly emitted from the lenticular lens 110, and the partial light ray L2 is totally reflected by the first outer annular surface 116. Passing through the first reflective surface 114a to the first tapered lens 120.

The first tapered lens 120 may be stacked on the lenticular lens 110. Referring to FIGS. 2A and 2B , the first tapered lens 120 has a third end surface 122 and a fourth end surface 124 . The fourth end surface 124 is opposite to the third end surface 122. The third end surface 122 of the first tapered lens 120 cooperates with the outer shape of the first reflective surface 114a such that the third end surface 122 of the first tapered lens 120 is disposed on the second end surface 114 of the lenticular lens 110. The fourth end surface 124 tapers inwardly from its outer circumference to form a pyramid shape as a second reflecting surface 124a. As seen from Fig. 1A, the second reflecting surface 124a is, for example, a circular face of a V-shaped tip, which has the same shape as the first reflecting surface 114a.

In addition, the first tapered lens 120 further has a second outer annular surface 126 surrounding the circumference of each of the second reflective surfaces 124a. The second reflecting surface 124a has a second top portion P2, see Fig. 2A. The angle θ2 of the second top portion P2 is between 60 and 120 degrees.

In addition, when the outer diameter of the first tapered lens 120 coincides with the outer diameter of the lenticular lens 110, the second outer annular surface 126 of the first tapered lens 120 is aligned with the lenticular lens 110 in the stacking direction. An outer annulus 116. In addition, referring to FIG. 2B, when the partial light ray L2 passes through the first reflecting surface 114a and is incident on the first tapered lens 120, it can be directly reflected by the second outer annular surface 126 after being reflected by the second reflecting surface 124a. Outside of a conical lens 120, or passing through the second reflecting surface 124a, it is directed toward the second conical lens 130, and after being reflected by all of the reflecting surfaces, directly from all of its outer annular surfaces to the second conical shape Beyond the lens 130, and so on. Therefore, the light L1, L2 of the single point light source 102 directed to the lens group 104 can be reflected by the first reflecting surface 114a and the at least one second reflecting surface 124a to form a stereoscopic light cone to achieve the effect of the stereo multi-point light source.

Please refer to FIGS. 3A and 3B , which are respectively schematic cross-sectional views of a tapered lens according to an embodiment of the invention. The third end surface 122 of the first tapered lens 120 has a third top portion P3, and the tip end of the third top portion P3 may be a rounded corner R or a flat angle S. In an embodiment, when the first tapered lens 120 is formed in a cavity by a mold-forming manner, the demolding ability of the first tapered lens 120 can be increased by the circular guide angle R or the flat angle S.

Next, please refer to FIG. 4, which is a schematic view showing the assembly of the lens assembly 104 according to an embodiment of the invention. In the assembly, the first outer ring surface 116 of the lenticular lens 110 is provided with a card slot 162, for example, and the second outer ring surface 126 of the first tapered lens 120 is provided with a hook 164. The hook 164 may be fixed in the card slot 162 such that the lenticular lens 110 and the first tapered lens 120 are engaged with each other in the stacking direction. In addition, a second card slot 166 may be disposed on the second outer ring surface 126 of the first tapered lens 120, which may correspond to a hook (not shown) disposed on the second tapered lens 130. The first tapered lens 120 and the second tapered lens 130 are engaged with each other in the stacking direction.

Please refer to FIGS. 5A-5C , which are schematic cross-sectional views of a tapered lens according to an embodiment of the invention. The tapered lenses 170 have the same shape and are structurally stackable with each other. Different from the above embodiment, the third end surface 172 and the fourth end surface 174 of the tapered lens 170 may be a circular arc surface C1 (see FIG. 5A), a composite inclined surface C2 (see FIG. 5B), or a combination of the two. The combined surface C3 (see Figure 5C) allows the user to produce different illuminating effects when viewed at different angles. The curvature of the circular arc surface C1 may be sequentially increased or decreased from the outer to the inner side and intersected on the top portion P4. The slope of the composite ramp C2 can be sequentially increased or decreased from the outside to the inside and intersected on the top P4. The tip end of the top portion P4 is, for example, a round guide angle, an angular corner or a flat angle, which is not limited in the present invention.

The multi-point light source module disclosed in the above embodiments of the present invention uses a single light source to emit light toward the lens group, and changes the light angle through the lens groups that are structurally stacked on each other to generate the effect of the multi-point light source. Since the circuit design and heat dissipation requirements of a single light source are the same as those of a general light fixture, it is possible to avoid the problem that the conventional multi-point light source must use multiple light-emitting diodes to meet the circuit design or heat dissipation requirements.

In conclusion, the present invention has been disclosed in the above preferred embodiments, and is not intended to limit the present invention. A person skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.

100. . . Multi-point light source module

102. . . light source

104. . . Lens group

110. . . Cylindrical lens

112. . . First end face

114. . . Second end face

114a. . . First reflecting surface

116. . . First outer annulus

120. . . First cone lens

122. . . Third end

124. . . Fourth end

124a. . . Second reflecting surface

126. . . Second outer annulus

130. . . Second tapered lens

132. . . Lamp holder

140. . . lampshade

150. . . Lamp structure

162. . . Card slot

164. . . The hook

P1 ~ P4. . . top

R. . . Round lead angle

S. . . Flat angle

C1. . . Circular surface

C2. . . Compound bevel

C3. . . Combination surface

1A and 1B are schematic views respectively showing the structure of a lamp according to an embodiment of the present invention.

FIG. 2A is a partially exploded perspective view of the multi-point light source module in FIG. 1B.

FIG. 2B is a schematic diagram showing the optical path of the multi-point light source module of FIG. 2A.

3A and 3B are cross-sectional views showing a tapered lens according to an embodiment of the present invention, respectively.

FIG. 4 is a schematic view showing the assembly of a lens assembly according to an embodiment of the invention.

5A-5C are cross-sectional views showing a tapered lens according to an embodiment of the present invention, respectively.

100. . . Multi-point light source module

102. . . light source

104. . . Lens group

110. . . Cylindrical lens

114. . . Second end face

114a. . . First reflecting surface

116. . . First outer annulus

120. . . First cone lens

122. . . Third end

124. . . Fourth end

124a. . . Second reflecting surface

126. . . Second outer annulus

132. . . Lamp holder

140. . . lampshade

150. . . Lamp structure

Claims (11)

A multi-point light source module includes: a light source; and a lens group disposed in a light emitting direction of the light source, the lens group comprising: a cylindrical lens having a first end surface and a second end surface, the first An end surface is adjacent to the light source and faces a light emitting surface of the light source, the second end surface is opposite to the first end surface, and the second end surface is tapered inwardly from the outer circumference thereof to form a pyramid shape, wherein the second end surface is a first reflective surface; and a first tapered lens stacked on the lenticular lens, the first tapered lens has a third end surface and a fourth end surface, the fourth end surface is opposite to the third end surface, The third end surface is disposed on the second end surface, and the third end surface cooperates with the outer shape of the first reflecting surface, and the fourth end surface is tapered inwardly from the outer circumference thereof to form a pyramid shape. The four end faces are a second reflecting surface. The multi-point light source module of claim 1, wherein the lens group further comprises at least one second tapered lens stacked on the first tapered lens, the second tapered lens and the first The shape and structure of the conical lens are the same. The multi-point light source module of claim 1, wherein the lenticular lens has a first outer annular surface surrounding the first reflective surface. The multi-point light source module of claim 3, wherein the first tapered lens has a second outer annular surface surrounding the second reflective surface. The multi-point light source module of claim 4, wherein the first outer annular surface is aligned with the second outer annular surface in the stacking direction. The multi-point light source module of claim 1, wherein the first reflective mask has a first top portion, and the first top has an angle of between 60 and 120 degrees. The multi-point light source module of claim 1, wherein the second reflective mask has a second top, and the second top has an angle of between 60 and 120 degrees. The multi-point light source module of claim 1, wherein the light source is a light source, and the light that is directed toward the lens group is reflected by the first reflective surface and the second reflective surface to form a light source. Stereoscopic light cone. The multi-point light source module of claim 1, wherein the third end surface has a third top portion, and the tip end of the third top portion is a round lead angle or a flat angle. The multi-point light source module of claim 1, wherein the lenticular lens and the first tapered lens are engaged with each other by a corresponding hook and a card slot. The multi-point light source module of claim 1, further comprising a lamp holder that fixes the lens group in the light exiting direction of the light source.