TWM594151U - Three dimensional projecting device with dual light sources - Google Patents

Abstract

A three dimensional projecting device with dual light sources includes a support element, a first light source, a carrier structure, a second light source, and an optical lens. The support element has a bottom plate and a sidewall on the bottom plate and surrounding an accommodating space. The first light source is disposed on the bottom plate of the support element. The carrier structure is disposed on the bottom plate of the support element. The second light source is disposed on the carrier structure such that the position of the second light source is higher than the position of the first light source. The optical lens is disposed on a top surface of the sidewall and covers the first and second light sources.

Description

Three-dimensional imaging projection device combining two light sources

The present disclosure relates to a three-dimensional imaging projection device with two light sources in one.

With the vigorous development of optical technology, structured light has been used in many fields, such as: 3D contour reproduction, distance measurement, anti-counterfeiting identification and other fields. However, in the prior art, the structure light can be generated by laser through a diffractive optical element (DOE).

However, if the three-dimensional imaging projection device has only a single light source, since the distance between the light source and the diffractive optical element is related to the focal length, and this distance is limited by the height of the support member under the optical lens, it is easy to cause the problem of insufficient light. And disadvantageous 3D auxiliary functions.

One technical aspect of the present invention is a three-dimensional imaging projection device combining two light sources.

According to an embodiment of the present invention, a three-dimensional unity of two light sources The imaging projection device includes a support, a first light source, a bearing structure, a second light source and an optical lens. The supporting member has a bottom plate and a side wall on the bottom plate, and the side wall surrounds the accommodating space. The first light source is arranged on the bottom plate of the support. The bearing structure is arranged on the bottom plate of the support. The second light source is arranged on the supporting structure, so that the position of the second light source is higher than the position of the first light source. The optical lens is disposed on the top surface of the side wall and covers the first light source and the second light source.

In an embodiment of the present invention, the bottom surface of the optical lens has a first diffractive microstructure and a second diffractive microstructure, the first diffractive microstructure overlaps the first light source, and the second diffractive microstructure and the second The light sources overlap.

In an embodiment of the present invention, the distance between the second light emitting source and the second diffractive microstructure is smaller than the distance between the first light emitting source and the first diffractive microstructure.

In an embodiment of the present invention, the bottom surface of the second light-emitting source is higher than the top surface of the first light-emitting source.

In an embodiment of the present invention, the second light emitting source is closer to the optical lens than the first light emitting source.

In an embodiment of the present invention, the load-bearing structure includes a first conductor and a second conductor. The first conductor is located on the bottom plate of the support and below the second light source, and is electrically connected to the second light source. The second conductor is separated from the first conductor and electrically connected to the second light source. The second conductor is located between the first conductor and the first light source.

In an embodiment of the present invention, the load-bearing structure further includes an insulator. The insulator is located between the first conductor and the second conductor.

In an embodiment of the present invention, the first light source and the second light source are vertical cavity surface emitting laser (VCSEL).

In an embodiment of the present invention, the bottom surface of the optical lens has a transparent conductive layer, and the three-dimensional imaging projection device combining two light sources further includes a plurality of conductive paths. The conductive paths are located in the support. Each conductive path has a top end and a bottom end. The top end extends to the top surface of the side wall and the bottom end extends to the bottom surface of the bottom plate. The top end of the conductive path is electrically connected to the transparent conductive layer.

In an embodiment of the present invention, the three-dimensional imaging projection device combining two light sources further includes a plurality of insulating layers. The insulating layers respectively surround the top ends of the conductive paths.

In the above embodiment of the present invention, since the three-dimensional imaging projection device with two light sources in one has a second light source and a supporting structure provided on the bottom plate, and the second light source is provided on the supporting structure, the position of the second light source It will be higher than the position of the first light source. In this way, the second light source is closer to the optical lens than the first light source, and the vertical position of the second light source is only related to the height of the supporting structure, and is not limited to the height of the support under the optical lens. Light source for fill light and used for 3D auxiliary functions. In addition, the configuration of the second light source and the bearing structure does not affect the distance between the first light source and the optical lens, so it does not affect the main light source (i.e., the first light source) of the three-dimensional imaging projection device with two light sources in one focal length.

100, 100a, 100b ‧‧‧ Three-dimensional imaging projection device combining two light sources

110‧‧‧Support

112‧‧‧Bottom plate

113‧‧‧Bottom

114‧‧‧Sidewall

115‧‧‧Top

120‧‧‧First light source

121‧‧‧Top

123‧‧‧wire

130‧‧‧Second light source

132‧‧‧Bottom

133‧‧‧wire

140‧‧‧bearing structure

142‧‧‧First conductor

144‧‧‧second conductor

146‧‧‧Insulator

150‧‧‧Optical lens

151‧‧‧Bottom

152‧‧‧The first diffraction microstructure

154‧‧‧Second diffraction microstructure

156‧‧‧Transparent conductive layer

160‧‧‧conductive path

162‧‧‧Top

164‧‧‧Bottom

170‧‧‧Insulation

2-2‧‧‧Line

d‧‧‧Gap

H1, H2‧‧‧Distance

S‧‧‧accommodation space

FIG. 1 shows a top view of a three-dimensional imaging projection device with two light sources in one according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view along line 2-2 of the three-dimensional imaging projection device in which the two light sources in FIG. 1 are integrated.

FIG. 3 is a cross-sectional view of a three-dimensional imaging projection device with two light sources in one according to an embodiment of the present invention, and the cross-sectional position is the same as FIG. 2.

FIG. 4 is a cross-sectional view of a three-dimensional imaging projection device with two light sources in one according to an embodiment of the present invention, and the cross-sectional position is the same as FIG. 2.

In the following, a plurality of embodiments of the present invention will be disclosed in the form of diagrams. For clear description, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present invention. That is to say, in some embodiments of the new model, these practical details are unnecessary. In addition, in order to simplify the drawings, some conventional structures and elements will be shown in a simple schematic manner in the drawings.

FIG. 1 illustrates a top view of a three-dimensional imaging projection device 100 with two light sources in one according to an embodiment of the present invention. FIG. 2 shows a cross-sectional view of the three-dimensional imaging projection device 100 with the two light sources in FIG. 1 taken along line 2-2. Referring to FIG. 1 and FIG. 2 at the same time, the three-dimensional imaging projection device 100 with two light sources in one includes a support 110, a first light source 120, a supporting structure 140, a second light source 130 and an optical lens 150. The support 110 has a bottom plate 112 and a side wall 114 on the bottom plate 112. The side wall 114 of the support 110 surrounds the accommodating space S. The first light source 120 is disposed on the bottom plate 112 of the support 110. The supporting structure 140 is disposed on the bottom plate 112 of the support 110, and the second light source 130 is disposed on the supporting structure 140.

Since the supporting structure 140 has a height, the position of the second light source 130 will be higher than the position of the first light source 120. In other words, the second light source 130 is closer to the optical lens 150 than the first light source 120. In this embodiment, the first The bottom surface 132 of the second light source 130 is higher than the top surface 121 of the first light source 120. In addition, the optical lens 150 is disposed on the top surface 115 of the side wall 114 of the support 110, and the optical lens 150 covers the first light source 120 and the second light source 130.

In this embodiment, the support 110 may be a ceramic cup, so that the support 110 has the advantages of good thermal conductivity, insulation, high hardness, and high melting point. The first light emitting source 120 and the second light emitting source 130 may be vertical cavity surface emitting laser (VCSEL), but it is not intended to limit the present invention. The first light source 120 and the second light source 130 can be used as the main light source and the auxiliary light source of the three-dimensional imaging projection device 100 with two light sources in one. For example, the second light source 130 can be used for functions such as fill light and 3D assist.

Since the three-dimensional imaging projection device 100 with two light sources in one has a second light source 130 and a supporting structure 140 disposed on the bottom plate 112, and the second light source 130 is disposed on the supporting structure 140, the position of the second light source 130 will be Higher than the position of the first light emitting source 120. In this way, the second light source 130 is closer to the optical lens 150 than the first light source 120, and the vertical position of the second light source 130 is only related to the height of the supporting structure 140, and is not limited to the support of the optical lens 150 below The height of the piece 110 can be used as a light source for fill light and used for 3D auxiliary functions. In addition, the configuration of the second light emitting source 130 and the supporting structure 140 does not affect the distance between the first light emitting source 120 and the optical lens 150, and therefore does not affect the main light source (i.e. the first The focal length of a light source 120).

In this embodiment, the bottom surface 151 of the optical lens 150 has a first diffractive microstructure 152 and a second diffractive microstructure 154. The distance H2 between the second light emitting source 130 and the second diffractive microstructure 154 is smaller than the first light emitting source 120 and the first The distance H1 between the diffractive microstructures 152. The first diffractive microstructure 152 overlaps the first light emitting source 120, and the second diffractive microstructure 154 overlaps the second light emitting source 130. In this way, the light from the first light emitting source 120 can pass through the first diffractive microstructure 152 and the light from the second diffractive microstructure 154 can pass through the second diffractive microstructure 154 to form a plurality of diffraction patterns to be projected Detects the surface of an object, for example for face recognition.

In addition, in this embodiment, the carrying structure 140 includes a first conductor 142 and a second conductor 144. The first conductor 142 is located on the bottom plate 112 of the support 110 and below the second light source 130, and is electrically connected to the second light source 130. The second conductor 144 is separated from the first conductor 142 by a gap d, and the second conductor 144 is electrically connected to the second light source 130. The second conductor 144 is located between the first conductor 142 and the first light emitting source 120. The first conductor 142 and the second conductor 144 are electrically insulated from each other. The first conductor 142 can be electrically connected to the negative electrode of the second light-emitting source 130, and the second conductor 144 can be connected to the positive electrode of the second light-emitting source 130 by using a wire 133, but it is not intended to limit the present invention.

In this embodiment, the power supply device can be electrically connected to the bottom of the first conductor 142 and the bottom of the second conductor 144 through the conductive channel in the bottom plate 112 of the support 110 to supply power to the second light source 130. Similarly, the power supply device can also be electrically connected to the negative electrode of the first light-emitting source 120 and the conductive wire 123 connected to the positive electrode via a conductive channel in the bottom plate 112 of the support 110 to supply power to the first light-emitting source 120.

It should be understood that the connection relationship, materials and functions of the components that have been described will not be repeated again, and will be described first. In the following description, other types of three-dimensional imaging projection apparatuses combining two light sources will be described.

FIG. 3 is a cross-sectional view of a three-dimensional imaging projection device 100a with two light sources in one according to an embodiment of the present invention. The cross-sectional position is the same as that in FIG. The three-dimensional imaging projection device 100a with two light sources in one includes a support 110, a first light emitting source 120, a supporting structure 140, a second light emitting source 130, and an optical lens 150. The difference from the embodiment shown in FIG. 2 is that the carrying structure 140 of the three-dimensional imaging projection device 100 a with two light sources in one further includes an insulator 146. The insulator 146 is located between the first conductor 142 and the second conductor 144 to electrically insulate the first conductor 142 and the second conductor 144. That is, the insulator 146 replaces the gap d between the first conductor 142 and the second conductor 144 in FIG. 2.

FIG. 4 is a cross-sectional view of a three-dimensional imaging projection device 100b with two light sources in one according to an embodiment of the present invention, and the cross-sectional position is the same as FIG. 2. The three-dimensional imaging projection device 100b with two light sources in one includes a support 110, a first light emitting source 120, a supporting structure 140, a second light emitting source 130, and an optical lens 150. The difference from the embodiment of FIG. 3 is that the bottom surface 151 of the optical lens 150 of the three-in-one three-dimensional imaging projection device 100b has a transparent conductive layer 156, and the three-in-one three-dimensional imaging projection device 100b further includes a plurality of conductive Path 160. The conductive path 160 is located in the support 110.

Each conductive path 160 has a top end 162 and a bottom end 164. The top end 162 of the conductive path 160 extends to the top surface 115 of the side wall 114 of the support 110, and the bottom end 164 of the conductive path 160 extends to the bottom surface 113 of the bottom plate 112. When the optical lens 150 is installed, the top end 162 of the conductive path 160 is covered by the optical lens 150 and is electrically connected to the transparent conductive layer 156. When the optical lens 150 is removed, the top end 162 of the conductive path 160 is bare. In this embodiment, the three-dimensional imaging projection device 100 b with two light sources in one further includes a plurality of insulating layers 170. 170 points Do not surround the top 162 of the conductive path 160.

When the three-dimensional imaging projection device 100b with two light sources in one is applied to an electronic device (such as a mobile phone), a sensing unit may be provided in the electronic device to electrically connect the bottom end 164 of the conductive path 160 to detect the optical having the transparent conductive layer 156 The resistance of the lens 150. When the optical lens 150 is impacted by an external force or broken by other factors, the sensing unit can use the conductive path 160 to detect the resistance difference of the optical lens 150 and transmit this signal to the first light source 120 and the second light source 130 The power supply device turns off the first light source 120 and the second light source 130. Since the light emitted through the ruptured optical lens 150 has too high energy, it may cause damage to human eyes. That is to say, the three-dimensional imaging projection device 100b with two light sources in one can further prevent the light of the first light source 120 and the second light source 130 from directly entering the human eye through the broken optical lens 150, thereby avoiding damage to the human eye.

Although the present invention has been disclosed as above by way of implementation, it is not intended to limit the present invention. Anyone who is familiar with this skill can make various modifications and retouching without departing from the spirit and scope of the present invention, so the protection of the present invention The scope shall be as defined in the appended patent application scope.

100‧‧‧Three-dimensional imaging projection device with two light sources in one

110‧‧‧Support

112‧‧‧Bottom plate

113‧‧‧Bottom

114‧‧‧Sidewall

115‧‧‧Top

120‧‧‧First light source

121‧‧‧Top

123‧‧‧wire

130‧‧‧Second light source

132‧‧‧Bottom

133‧‧‧wire

140‧‧‧bearing structure

142‧‧‧First conductor

144‧‧‧second conductor

150‧‧‧Optical lens

151‧‧‧Bottom

152‧‧‧The first diffraction microstructure

154‧‧‧Second diffraction microstructure

d‧‧‧Gap

H1, H2‧‧‧Distance

S‧‧‧accommodation space

Claims (10)

A three-dimensional imaging projection device combining two light sources, including: A support member having a bottom plate and a side wall on the bottom plate, the side wall surrounding a receiving space; A first light source, which is arranged on the bottom plate of the support; A bearing structure, arranged on the bottom plate of the support; A second light-emitting source disposed on the carrying structure so that the position of the second light-emitting source is higher than the position of the first light-emitting source; and An optical lens is disposed on a top surface of the side wall and covers the first light source and the second light source. The two-in-one three-dimensional imaging projection device according to claim 1, wherein the bottom surface of the optical lens has a first diffractive microstructure and a second diffractive microstructure, the first diffractive microstructure and the first A light source overlaps, and the second diffractive microstructure overlaps the second light source. The two-in-one three-dimensional imaging projection device according to claim 2, wherein the distance between the second light source and the second diffractive microstructure is smaller than that of the first light source and the first diffractive microstructure The distance between. The two-in-one three-dimensional imaging projection device according to claim 1, wherein the bottom surface of the second light source is higher than the top surface of the first light source. The two-in-one three-dimensional imaging projection device according to claim 1, wherein the second light source is closer to the optical lens than the first light source. The two-in-one three-dimensional imaging projection device according to claim 1, wherein the bearing structure includes: A first conductor located on the bottom plate of the support and below the second light source, and electrically connected to the second light source; and A second conductor is separated from the first conductor and electrically connected to the second light source, wherein the second conductor is located between the first conductor and the first light source. The two-in-one three-dimensional imaging projection device according to claim 6, wherein the carrying structure further includes: An insulator is located between the first conductor and the second conductor. The two-in-one three-dimensional imaging projection device according to claim 1, wherein the first light emitting source and the second light emitting source are vertical cavity surface emitting lasers (VCSEL). The two-in-one three-dimensional imaging projection device according to claim 1, wherein the bottom surface of the optical lens has a transparent conductive layer, and the two-in-one three-dimensional imaging projection device further includes: A plurality of conductive paths are located in the support, each of the conductive paths has a top end and a bottom end, the top end extends to the top surface of the side wall, the bottom end extends to the bottom surface of the bottom plate, wherein the conductive The top ends of the path are electrically connected to the transparent conductive layer. The three-dimensional imaging projection combining two light sources as described in claim 9 The shooting device further includes: A plurality of insulating layers respectively surround the top ends of the conductive paths.

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