TWM602287U - Laser package structure - Google Patents

Abstract

The present disclosure provides a laser package structure. The laser package structure includes a stand, at least one laser light source, and at least one optical lens. The stand has a bottom portion and a supporting portion. The supporting portion is located on the bottom portion and has at least one reflective surface. The laser light source is disposed on the bottom portion of the stand. The laser light source has a light-emitting face toward the reflecting surface. The optical lens is disposed on the supporting portion and covers the laser light source, in which light emitted by the light-emitting face of the laser light source is reflected by the reflective surface of the supporting portion so as to pass through the optical lens.

Description

Laser packaging structure

This disclosure relates to a laser package structure.

With the advancement of technology, various home appliances using optical technology are more common in our daily lives. For example, vacuum tube TVs, liquid crystal screens, plasma displays, touch panels or projectors, etc., are all products manufactured using optical technology. , Even in the field of health care in recent years.

The light emitting module of a display device (such as a projector) may have multiple independent light emitting diode chip sets, and these light emitting diode chip sets are used to generate light of different colors to achieve the purpose of light mixing. However, such a configuration makes it difficult to reduce the size of the display device. Therefore, while using optical technology to develop images, in addition to pursuing more detailed image quality and resolution, how to reduce the size of the equipment and reduce the use of space are also issues that need attention.

One technical aspect of this disclosure is a laser packaging structure.

According to an embodiment of the present disclosure, a laser package structure includes a bracket, a laser light source, and an optical lens. The support has a bottom and a supporting part, wherein the supporting part is located on the bottom and the supporting part has a reflecting surface. The laser light source is arranged on the bottom of the bracket, and the laser light source has a light-emitting surface facing the reflecting surface. The optical lens is arranged on the supporting part and covers the laser light source. The light emitted from the light-emitting surface of the laser light source is reflected by the reflective surface of the supporting part and passes through the optical lens.

In an embodiment of the present disclosure, in the above-mentioned laser package structure, the reflective surface is an inclined surface, and the included angle between the inclined surface and the bottom is in the range of 40 degrees to 50 degrees.

In an embodiment of the present disclosure, in the above-mentioned laser package structure, the reflective surface is a concave surface.

In an embodiment of the present disclosure, the above-mentioned laser package structure further includes a plurality of laser light sources, wherein the support part surrounds the laser light source.

In an embodiment of the present disclosure, in the above-mentioned laser package structure, the support portion has a plurality of reflective surfaces, and the positions of the laser light sources respectively correspond to the reflective surfaces of the support portion.

In an embodiment of the present disclosure, in the above-mentioned laser package structure, the top view shape of the supporting portion is a cross shape.

In an embodiment of the present disclosure, in the above-mentioned laser package structure, the support portion is a tube body, the reflective surface is located on the inner wall of the tube body, and the reflective surface surrounds the laser light source.

In an embodiment of the present disclosure, in the above-mentioned laser package structure, the optical lens has a top surface and a bottom surface opposite to each other, the top surface and the bottom surface are both flat, or the top surface and the bottom surface are respectively convex and flat.

In an embodiment of the present disclosure, in the above-mentioned laser package structure, the number of optical lenses is two, and one of them is located between the other and the reflective surface.

In an embodiment of the present disclosure, the bottom of the bracket and the supporting portion are integrally formed.

In the above-mentioned embodiments of the present disclosure, since the laser package structure has a reflective surface provided on the support portion and has a laser light source facing the reflective surface, when the laser light source emits light, the light can be reflected by the reflective surface, and thus Go through the optical lens. In this way, the light of the laser light source can be changed from a horizontal optical path to a vertical optical path via the reflecting surface. In addition, the volume of the laser package structure can be effectively reduced through the configuration of the reflective surface of the support part and the laser light source, and the optical lens on the bracket can be used to further change the light path to meet the desired light projection effect.

Hereinafter, a plurality of implementation manners of the present disclosure will be disclosed in diagrams. For clear description, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit this disclosure. In other words, in some implementations of this disclosure, these practical details are unnecessary. In addition, in order to simplify the drawings, some conventionally used structures and elements will be shown in a simple schematic manner in the drawings.

FIG. 1 shows a top view of a laser package structure 100 according to an embodiment of the present disclosure. FIG. 2 shows a cross-sectional view of the laser package structure 100 of FIG. 1 along the line 2-2. Referring to FIGS. 1 and 2 at the same time, the laser package structure 100 includes a bracket 110, a laser light source 120 and an optical lens 130. The bracket 110 has a bottom 112 and a supporting portion 114, wherein the supporting portion 114 is located on the bottom 112. The supporting portion 114 has at least one reflective surface 115. The laser light source 120 is arranged on the bottom 112 of the bracket 110. The laser light source 120 has a light emitting surface 121 facing the reflective surface 115. In this embodiment, the supporting portion 114 surrounds the laser light source 120. The optical lens 130 is disposed on the supporting portion 114 and covers the laser light source 120. The light L emitted from the light-emitting surface 121 of the laser light source 120 is reflected by the reflective surface 115 of the support portion 114 and passes through the optical lens 130. In this embodiment, a single optical lens 130 is provided on the supporting portion 114. The optical lens 130 may be a flat lens or a convex lens, and the top surface thereof may have a microstructure, but it is not used to limit the disclosure.

In this embodiment, the reflective surface 115 may be an inclined surface. The included angle between the reflective surface 115 and the bottom 112 may be in the range of 40 degrees to 50 degrees. In other embodiments, the reflective surface 115 may also be an arc-shaped concave surface. The reflective surface 115 may be a metal plating layer plated on the support portion 114, such as a silver layer or a gold layer. The bottom 112 and the supporting portion 114 of the bracket 110 can be injection-molded to form an integral structure, and the materials can be both ceramics or both plastics. In this way, material and assembly costs can be effectively reduced. In addition, the surface formed by injection molding is smoother and smoother, and has a better reflection effect. Alternatively, the bottom 112 and the support 114 can also be made of different materials. For example, the bottom 112 is made of common LED packaging materials such as PCB or ceramics, and the support 114 is made of liquid crystal polymer (LCP), if The bottom 112 and the supporting portion 114 are made of different materials, which has the advantage of reducing the manufacturing cost. In addition, in this embodiment, the laser light source 120 is electrically connected to the wire 150, and the wire 150 may be electrically connected to the conductive pad 140 disposed under the bottom 112. The conductive pad 140 can be electrically connected to a power source to supply power to the laser light source 120.

Since the laser package structure 100 has a reflective surface 115 disposed on the supporting portion 114 and has a laser light source 120 facing the reflective surface 115, when the laser light source 120 emits light L, the light L can be reflected by the reflective surface 115, It then passes through the optical lens 130. In this way, the light L of the laser light source 120 can be changed from a horizontal optical path to a vertical optical path via the reflecting surface 115. In addition, through the configuration of the reflective surface 115 of the support portion 114 and the laser light source 120, the volume of the laser package structure 100 can be effectively reduced, and the optical lens 130 located on the bracket 110 can be used to further change the optical path to meet the requirements. The light projection effect.

It should be understood that the connection relationships, materials, and effects of the components that have been described will not be repeated, and will be described first. In the following description, other types of laser package structures will be explained.

FIG. 3 shows a top view of a laser package structure 100a according to another embodiment of the present disclosure. FIG. 4 is a cross-sectional view of the laser package structure 100a of FIG. 3 along the line 4-4. Referring to FIGS. 3 and 4 at the same time, the laser package structure 100a includes a bracket 110, two laser light sources 120, and optical lenses 130a and 130b. As shown in the figure, the supporting portion 114 of the bracket 110 has two reflecting surfaces 115. The two laser light sources 120 are arranged on the bottom 112 of the bracket 110 opposite to each other, and the light-emitting surfaces 121 of the two laser light sources 120 respectively face the supporting portions 114 arranged around them, that is, respectively face the two reflective surfaces 115.

The supporting portion 114 supports the optical lens 130 above the reflective surface 115, and the light L is reflected upward from the light exit surface 121 of the laser light source 120 to irradiate the reflective surface 115 and passes through the optical lenses 130a, 130b. It is worth mentioning that, in this embodiment, two optical lenses 130a and 130b are provided above the supporting portion 114. The optical lens 130a is located between the optical lens 130b and the reflective surface 115. In this embodiment, both the top surface 131 and the bottom surface 132 of the optical lens 130b are convex surfaces, the top surface of the optical lens 130a is convex surface, and the bottom surface is flat. In other embodiments, the optical lens 130b may be an optical lens whose top surface 131 and bottom surface 132 are both flat, but it is not used to limit the disclosure. The combination of optical lenses can be arbitrarily matched to control the refraction effect according to the desired function. . According to the design requirements, the selected lens type can control the effect of condensing and astigmatism. For example, a flat lens does not have a condensing function, and a convex lens can converge light whether it is a plano-convex lens or a double-convex lens.

Similarly, the laser light source 120 is electrically connected to the wire 150, and the wire 150 is electrically connected to the conductive pad 140 disposed under the bottom 112. It is worth mentioning that the wires 150 of the two laser light sources 120 can be electrically connected. Connect to the same conductive pad 140 to share an electrode. However, the two laser light sources can also be implemented without sharing the same electrode.

FIG. 5 shows a top view of a laser package structure 100b according to another embodiment of the present disclosure. The cross-sectional view of the laser package structure 100b in FIG. 5 along the line 4-4 is the same as that in FIG. 4. Referring to FIGS. 4 and 5 at the same time, the laser package structure 100 b has four laser light sources 120. The laser light sources 120 are arranged on the bottom 112 of the bracket 110, and the four light-emitting surfaces 121 of the four laser light sources 120 face the rectangular support portion 114 surrounding the laser light source 120.

FIG. 6 is a top view of the laser package structure 100c according to another embodiment of the present disclosure, and FIG. 7 is a top view of the laser package structure 100c of FIG. 6 with the optical lens 130 removed. Referring to FIGS. 6 and 7 at the same time, in this embodiment, the supporting portion 114 a of the bracket 110 is provided at least on the central area of the bottom 112, not like the supporting portion 114 surrounding the bottom 112. The top view shape of the support portion 114a is a cross shape, and the support portion 114a and the bottom 112 may be integrally formed or assembled after being separately formed. The supporting portion 114a has eight reflecting surfaces, such as four groups of reflecting surfaces 115a and 115b adjacent to each other and substantially perpendicular to each other. The angle between each reflecting surface 115a, 115b and the bottom 112 is between 40 degrees and 50 degrees. The inclination of the reflecting surface 115 in Fig. 7 can be referred to Figs. 2 and 4. The laser package structure 100c has eight laser light sources arranged on the bracket 110, such as four groups of laser light sources 120a, 120b, wherein the light-emitting surfaces 121a, 121b of each laser light source 120a, 120b face the corresponding reflective surfaces, respectively 115a, 115b. As shown in FIG. 7, the light-emitting surface 121a of the laser light source 120a faces the corresponding reflective surface 115a, and similarly, the light-emitting surface 121b of the laser light source 120b faces the corresponding reflective surface 115b. The optical lens 130 is disposed above the support portion 114a, and the light L is reflected by the light-emitting surfaces 121a and 121b through the reflective surfaces 115a and 115b, and then passes through the optical lens 130.

FIG. 8 is a top view of a laser package structure 100d according to another embodiment of the present disclosure. FIG. 9 is a top view of the laser package structure 100d of FIG. 8 with the optical lens 130 removed. Referring to FIGS. 8 and 9 at the same time, in this embodiment, in addition to surrounding the bottom 112, the supporting portion 114b of the bracket 110 also has a cross-shaped structure as shown in FIG. 7, and the supporting portion 114b and the bottom 112 can be integrally formed , The bracket 110 is formed together, so that the production will reduce the cost. The laser packaging structure 100d is provided with a total of twelve laser light sources, such as four groups of laser light sources 120a, 120b, and 120c. The supporting portion 114b has twelve reflective surfaces, such as four groups of reflective surfaces 115a, 115b, 115c that are adjacent to each other and have a triangular shape in plan view. Among them, four reflective surfaces 115c are located on the support portion 114b surrounding the bottom 112, and the other eight reflective surfaces 115a, 115b are located on the cross-shaped support portion 114b. The light-emitting surfaces 121a, 121b, and 121c of the laser light sources 120a, 120b, and 120c face the reflective surfaces 115a, 115b, and 115c, respectively. The twelve reflecting surfaces 115a, 115b, 115c are all inclined surfaces, and the angle between the inclined surface and the bottom 112 is in the range of 40 degrees to 50 degrees.

As shown in Figure 9, the light-emitting surface 121a of the laser light source 120a faces the corresponding reflecting surface 115a, the light-emitting surface 121b of the laser light source 120b faces the corresponding reflecting surface 115b, and the light-emitting surface 121c of the laser light source 120c faces the corresponding reflecting surface.面115c. The light L in the figure hits one of the reflective surfaces 115a, 115b, 115c, and then passes through the optical lens 130 covering the support 110 through reflection.

FIG. 10 is a top view of the laser package structure 100e according to another embodiment of the disclosure after the optical lens is removed. In this embodiment, the support portion 114c of the bracket 110 is a tube, and the reflective surface 115d of the support portion 114c is a concave surface 116. The reflecting surface 115d is arranged on the inner wall of the supporting portion 114 of the tube body. In addition, the laser package structure 100e has five laser light sources 120 arranged in a ring shape, and the light-emitting surface 121 of the laser light source 120 faces outward toward the reflective surface 115d. After the light L is directed to the reflecting surface 115d, it can pass through the optical lens of the covering bracket 110 through reflection. The designer can increase or decrease the configuration of the laser light source 120 according to the demand of light intensity, and regardless of the number of the laser light source 120, the laser The light emitting surface 121 of the light source 120 can all face the reflective surface 115d.

In the above-mentioned embodiments of the present disclosure, the different positions of the laser light sources will result in different sizes of light spots, which can be used in different optical products (for example, different optical sensing instruments or optical fiber transmission technologies). The configuration of the lens combination can achieve the largest space utilization rate and the most appropriate effect in the laser package structure with limited space.

Although this disclosure has been disclosed in the above implementation manner, it is not intended to limit the disclosure. Anyone who is familiar with this technique can make various changes and modifications without departing from the spirit and scope of this disclosure. Therefore, this disclosure is protected The scope shall be subject to those defined in the attached patent scope.

100, 100a, 100b, 100c, 100d, 100e: laser package structure 110: bracket 112: bottom 114, 114a, 114b, 114c: support part 115, 115a, 115b, 115c, 115d: reflective surface 116: concave 120, 120a, 120b, 120c: laser light source 121, 121a, 121b, 121c: light emitting surface 130, 130a, 130b: optical lens 131: top surface 132: Bottom 140: Conductive pad 150: wire L: light 2-2, 4-4, 4-4: line segment

In order to make the above and other objectives, features, advantages and embodiments of this disclosure more obvious and understandable, the description of the accompanying drawings is as follows: FIG. 1 is a top view of a laser package structure according to an embodiment of the disclosure. Figure 2 shows a cross-sectional view of the laser package structure of Figure 1 along line 2-2. FIG. 3 is a top view of a laser package structure according to another embodiment of the disclosure. Figure 4 shows a cross-sectional view of the laser package structure of Figure 3 along the line 4-4. FIG. 5 is a top view of a laser package structure according to another embodiment of the present disclosure. FIG. 6 is a top view of a laser package structure according to another embodiment of the present disclosure. Fig. 7 is a top view of the laser package structure of Fig. 6 with the optical lens removed. FIG. 8 is a top view of a laser package structure according to another embodiment of the present disclosure. Fig. 9 is a top view of the laser package structure of Fig. 8 with the optical lens removed. FIG. 10 is a top view of the laser package structure according to another embodiment of the disclosure after the optical lens is removed.

100: Laser package structure

110: bracket

112: bottom

114: Support

115: reflective surface

120: Laser light source

121: Glossy Surface

130: optical lens

140: Conductive pad

150: wire

L: light

Claims (10)

A laser packaging structure, including: A bracket having a bottom and a supporting portion, wherein the supporting portion is located on the bottom, and the supporting portion has at least one reflective surface; At least one laser light source disposed on the bottom of the bracket, the laser light source having a light emitting surface facing the reflecting surface; and At least one optical lens arranged on the supporting part and covering the laser light source, The light emitted from the light-emitting surface of the laser light source is reflected by the reflective surface of the support portion and passes through the optical lens. The laser package structure according to claim 1, wherein the reflective surface is an inclined surface, and the angle between the inclined surface and the bottom is in the range of 40 degrees to 50 degrees. The laser package structure according to claim 1, wherein the reflective surface is a concave surface. The laser package structure according to claim 1, comprising a plurality of the laser light sources, wherein the support part surrounds the laser light sources. The laser package structure according to claim 4, wherein the support portion has a plurality of the reflective surfaces, and the positions of the laser light sources correspond to the reflective surfaces of the support portion. The laser package structure according to claim 1, wherein the top view shape of the supporting portion is a cross shape. The laser package structure according to claim 3, wherein the supporting portion is a tube body, the reflective surface is located on an inner wall of the tube body, and the reflective surface surrounds the laser light sources. The laser package structure according to claim 1, wherein the optical lens has a top surface and a bottom surface opposite to each other, the top surface and the bottom surface are both a flat surface, or the top surface and the bottom surface are respectively a convex surface and a bottom surface. flat. The laser package structure according to claim 1, wherein the number of the optical lenses is two, and one of them is located between the other and the reflective surface. The laser package structure according to claim 1, wherein the bottom of the bracket and the supporting portion are integrally formed.

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