TWM575875U - Opticle module for protecting human eyes - Google Patents

Abstract

An optical module for protection human eyes includes a holder, a metal bonding layer, a conductive lens, and a light-emitting chip. The holder has first conductive paths, a bottom plate, and a sidewall that surrounds an accommodating space. Each of the first conductive paths has a first end and a second end that are respectively on a top surface of the sidewall and a bottom surface of the holder. The metal bonding layer covers the top surface of the sidewall and has openings. The first ends of the first conductive paths are in the openings. The conductive lens is located on the metal bonding layer and has second conductive paths that surround the accommodating space. Two ends of each of the second conductive paths are respectively electrically connected to two of the first ends of the first conductive paths. When a resistance difference is detected through the first and second conductive paths, the light-emitting element is switched off.

Description

Human eye protection optical module

This case is about a human eye protection optical module.

Due to the prevalence of smart phones, the functions of mobile phones are also increasing. For example, the optical components used in mobile phones are becoming more and more diverse, and in addition to photographic lenses, there may be laser optical modules for measuring distance or face detection.

However, when the mobile phone is damaged by an external force or other factors, the lens of the laser optical module is broken, and the power may be directly injected into the human eye due to no power-off mechanism, thereby causing damage to the human eye. In addition, the lens is generally attached to the bracket by adhesive, and the heat resistance is not good, and the lens is easily released from the bracket at a high temperature.

One of the technical aspects of the present invention is a human eye protection optical module.

According to an embodiment of the present invention, a human eye protection optical module includes a support member, a metal bonding layer, a conductive lens, and a light emitting element. The support member has a plurality of first conductive paths, a bottom plate and side walls on the bottom plate. Side wall Accommodate space. Each of the first conductive paths has a first end and a second end, the first end being located at a top surface of the side wall and the second end being located at a bottom surface of the support member. The metal bonding layer covers the top surface of the sidewall and has a plurality of notches. The first end of the first conductive path is located in the gap. The conductive lens is on the metal bonding layer. The conductive lens has a plurality of second conductive paths. The second conductive path surrounds the accommodating space, and two ends of each of the second conductive paths are electrically connected to both of the first ends of the first conductive paths. The illuminating element is located on the bottom plate of the support. When the difference in resistance is detected by the first conductive path and the second conductive path, the light emitting element is powered off.

In an embodiment of the present invention, the conductive lens has a quadrangular shape and four sides, the number of the second conductive paths is four, and the four second conductive paths are respectively located on four sides of the conductive lens.

In an embodiment of the present invention, the sidewall has a quadrangular shape and four sides, the number of the metal junction layers is four, the number of the first conductive paths is four, and the four first ends of the four first conductive paths are respectively Located at the four corners of the top surface of the side wall.

In an embodiment of the present invention, the conductive lens includes an insulating layer. The insulating layer covers the second conductive path such that the second conductive path is electrically insulated from the metal bonding layer.

In an embodiment of the present invention, the human eye protection optical module further includes an insulating layer. The insulating layer is located in the gap of the metal bonding layer and surrounds the first end of the first conductive path.

In an embodiment of the present invention, the insulating layer is located between the first end of the first conductive path, the metal bonding layer, and the top surface of the conductive lens and the sidewall.

In an embodiment of the present invention, the conductive lens has a plan view shape The shape of the quadrilateral has four sides, the number of the second conductive paths is two, and one of the two second conductive paths is located under the other and electrically insulated from each other, and each of the two second conductive paths has a quadrilateral structure surrounding the receiving portion. space.

In an embodiment of the present invention, the sidewall has a quadrangular shape and four sides, the number of the metal junction layers is four, the number of the first conductive paths is four, and the four first ends of the four first conductive paths are respectively Located at the four corners of the top surface of the side wall.

In an embodiment of the present invention, the human eye protection optical module further includes two insulating layers, one of which is located between the two second conductive paths, and the second conductive path located below is located between the two insulating layers.

In an embodiment of the present invention, the conductive lens has a bottom surface facing the support and a gold plating layer, and the gold plating layer is located on the bottom surface of the conductive lens and is in contact with the metal bonding layer.

In the above-described embodiment of the present invention, since the conductive lens is fixed to the top surface of the side wall of the support member by the metal bonding layer, the heat resistance is good, and the stability can be greatly improved to prevent the conductive lens from being detached from the support member at a high temperature. In addition, since the second conductive path of the conductive lens is electrically connected to the first conductive path of the support member, and the second conductive path itself can serve as a resistor, when the conductive lens is broken or dropped by an external force or other factors, the first A conductive path and a second conductive path detect a difference in resistance to power down the light emitting element. In this way, the light of the light-emitting element can be prevented from directly entering the human eye, thereby avoiding damage to the human eye.

100, 100a, 100b‧‧‧ human eye protection optical module

110‧‧‧Support

112‧‧‧floor

113‧‧‧ bottom

114‧‧‧ side wall

115‧‧‧ top surface

116‧‧‧First conductive path

117‧‧‧ first end

118‧‧‧ second end

119a‧‧‧electrode

119b‧‧‧electrode

120‧‧‧Conducting lens

121‧‧‧ bottom

122, 122a, 122b‧‧‧ second conductive path

123, 123a, 123b‧‧‧

124, 124a, 124b‧‧‧

125, 125a, 125b‧‧‧ insulation

126‧‧‧ gold plating

127‧‧‧Microstructure

128a, 128b‧‧‧ quadrilateral structure

130‧‧‧Metal joint

150‧‧‧Lighting elements

160‧‧‧Insulation

7-7‧‧‧ segments

O‧‧‧ gap

S‧‧‧ accommodating space

FIG. 1 is a top view of a human eye protection optical module according to an embodiment of the present invention.

FIG. 2 is a top view of the human eye protection optical module of FIG. 1 with the conductive lens removed.

Fig. 3 is a bottom view showing the conductive lens of Fig. 1.

Figure 4 is a bottom view of the human eye protection optical module of Figure 1.

FIG. 5 is a schematic circuit diagram of the human eye protection optical module of FIG. 1.

FIG. 6 is a schematic circuit diagram of a human eye protection optical module according to an embodiment of the present invention.

Figure 7 is a cross-sectional view of the human eye protection optical module of Figure 6 taken along line 7-7.

FIG. 8 is a schematic circuit diagram of a human eye protection optical module according to an embodiment of the present invention.

The embodiments of the present invention are disclosed in the following drawings, and for the sake of clarity, the details of the invention are described in the following description. However, it should be understood that these practical details are not intended to limit the novel. That is to say, in some embodiments of the present invention, these practical details are not necessary. In addition, some of the conventional structures and elements are shown in the drawings in a simplified schematic manner in order to simplify the drawings.

FIG. 1 is a top view of a human eye protection optical module 100 according to an embodiment of the present invention. Figure 2 is a diagram showing the human eye protection optical module of Figure 1. A top view when the conductive lens 120 is removed. Referring to FIGS. 1 and 2 , the human eye protection optical module 100 includes a support member 110 , a conductive lens 120 , a metal bonding layer 130 , and a light emitting element 150 . The support member 110 has a plurality of first conductive paths 116, a bottom plate 112 and side walls 114 on the bottom plate 112. The side wall 114 surrounds the accommodation space S. The first conductive path 116 has a first end 117 and the first end 117 of the first conductive path 116 is located at a top surface 115 of the sidewall 114. The metal bonding layer 130 covers the top surface 115 of the sidewall 114, and the metal bonding layer 130 has a plurality of notches O. The first end 117 of the first conductive path 116 is located in the notch O of the metal bonding layer 130. That is, when the conductive lens 120 is removed, the first end 117 of the first conductive path 116 is bare. When the conductive lens 120 is mounted on the support 110, the conductive lens 120 is located on the metal bonding layer 130 and electrically connected to the first end 117 of the first conductive path 116. Further, the light emitting element 150 is located on the bottom plate 112 of the support member 110.

The human eye protection optical module 100 can be used as a measurement distance component or a face detection component of an electronic device. The illuminating element 150 can be a laser illuminating element, such as a laser illuminating diode, but is not intended to limit the present invention.

FIG. 3 is a bottom view of the conductive lens 120 of FIG. 1. Referring also to FIGS. 2 and 3, the conductive lens 120 has a plurality of second conductive paths 122. The second conductive path 122 is disposed along the sidewall 114 to surround the accommodating space S. When the conductive lens 120 is mounted on the support 110, the two ends 123 and 124 of the second conductive path 122 are electrically connected to the two first conductive paths 116, respectively. The two first ends 117. That is, the positions of the two ends 123, 124 of the second conductive path 122 respectively correspond to the positions of the two first ends 117 of the two first conductive paths 116, so that the second conductive path 122 can be electrically connected to the first conductive path 116.

4 is a bottom view of the human eye protection optical module 100 of FIG. 1. Referring also to FIGS. 2 and 4, the first conductive path 116 has a second end 118 opposite the first end 117, and the second end 118 of the first conductive path 116 is located at the bottom surface 113 of the support member 110. That is, the first conductive path 116 extends from the top surface 115 of the sidewall 114 of the support member 110 to the bottom surface 113 of the support member 110. In addition, the bottom surface 113 of the support member 110 is further provided with electrodes 119a, 119b electrically connected to the light-emitting element 150. The electrode 119a may be a positive electrode and the electrode 119b may be a negative electrode, and is not intended to limit the present invention. When the human eye protection optical module 100 is applied to an electronic device (for example, a mobile phone), the sensing device can be electrically connected to the second end 118 of the first conductive path 116 to detect the conductive lens 120 of FIG. The resistance.

In the embodiment, the support member 110 can be a ceramic cup body, so that the support member 110 has the advantages of good thermal conductivity, insulation, high hardness, high melting point and the like. The support member 110 can be formed by using a hole and a metal to form the first conductive path 116, or can be fabricated by stacking a plurality of ceramics. A portion of the first conductive path 116 is pre-formed in each layer of ceramic. The entire first conductive path 116 can be formed.

Referring to FIG. 2 and FIG. 3 , since the second conductive path 122 of the conductive lens 120 is electrically connected to the first conductive path 116 of the support 110 , and the second conductive path 122 itself can serve as a resistor, when the conductive lens 120 is used The sensing unit can detect the difference in resistance by using the first conductive path 116 and the second conductive path 122, and transmit the signal to the power supply unit of the electrical connection electrode 119a, 119b. In order to power off the light-emitting element 150. Due to the light rays passing through the light-emitting element 150 that ruptures the conductive lens 120 Excessive energy with the light of the light-emitting element 150 that is not electrically conductive lens 120 can cause damage to the human eye. Therefore, the human eye protection optical module 100 can prevent the light of the light-emitting element 150 from directly entering the human eye, thereby avoiding damage to the human eye.

In the present embodiment, the conductive lens 120 may have a quadrangular shape (for example, a rectangular shape) and four sides in a plan view. The number of the second conductive paths 122 is four, and the four second conductive paths 122 are respectively located on four sides of the conductive lens 120. The sidewalls 114 of the support member 110 have a quadrangular shape and have four sides. The number of the gaps O of the metal bonding layer 130 is four. The number of the first conductive paths 116 is four, and the four first ends of the four first conductive paths 116 are 117. They are located at the four corners of the top surface 115 of the side wall 114, respectively. The first end 117 of each of the notches O having the first conductive path 116 is electrically connected to the two second conductive paths 122 of the conductive lens 120. In this way, no matter which part of the support member 110 is broken or detached from the conductive lens 120, the difference in resistance can be detected through the first conductive path 116 and the second conductive path 122. The human eye protection optical module 100 uses eight points to detect the resistance change of the conductive lens 120, which can effectively improve the accuracy.

In the embodiment, the human eye protection optical module 100 may further include an insulating layer 160. The insulating layer 160 is located in the notch O of the metal bonding layer 130 and surrounds the first end 117 of the first conductive path 116. When the conductive lens 120 is disposed on the metal bonding layer 130, the insulating layer 160 is located between the first end 117 of the first conductive path 116, the metal bonding layer 130, and the top surface 115 of the conductive lens 120 and the sidewall 114. The insulating layer 160 can ensure that the first end 117 of the first conductive path 116 does not directly contact the metal bonding layer 130 but only contacts the conductive lens 120, and can seal the notch O of the metal bonding layer 130 to prevent moisture from entering the gap O. Enter the human eye protection optical module 100.

Further, the conductive lens 120 includes an insulating layer 125. The insulating layer 125 covers the second conductive path 122. When the conductive lens 120 is mounted on the support 110, the second conductive path 122 and the metal bonding layer 130 may be electrically insulated from each other by the insulating layer 125. In the present embodiment, the region of the second conductive path 122 near the two ends 123, 124 is not covered by the insulating layer 125, but the position of the above region corresponds to the position of the notch O of the metal bonding layer 130, and only the insulation is in contact. Layer 160 does not contact metal bond layer 130.

The insulating layer 125 can provide protection and insulation to the second conductive path 122. The material of the insulating layers 125 and 160 may be ceria or tantalum nitride. The material of the second conductive path 122 may be Indium Tin Oxide (ITO), but is not intended to limit the present invention.

In addition, the conductive lens 120 has a bottom surface 121 facing the support member 110 and a gold plating layer 126. The gold plating layer 126 is located on the bottom surface 121 of the conductive lens 120 and is in contact with the metal bonding layer 130 on the support member 110. Therefore, the conductive lens 120 can be fixed on the top surface 115 of the sidewall 114 of the support member 110 by the metal bonding layer 130. Compared with the conventional adhesive bonding method, the metal bonding layer 130 has good heat resistance and can greatly enhance the conductive lens. The stability between the 120 and the support member 110 prevents the conductive lens 120 from being detached from the support member 110 at a high temperature. In the present embodiment, the material of the metal bonding layer 130 may be a gold-tin alloy, for example, containing 80% gold and 20% tin. When the conductive lens 120 is assembled, the metal bonding layer 130 may be first melted at a temperature of about 260 ° C, and then the gold plating layer 126 of the conductive lens 120 is bonded to the metal bonding layer 130. During the bonding process, gold of the gold plating layer 126 may diffuse into the metal bonding layer 130, increasing the gold content of the metal bonding layer 130, for example, containing 90% gold and 10% tin. As a result, the metal bonding layer 130 melting point It can be raised to about 400 ° C, so the stability of the conductive lens 120 and the support member 110 at a high temperature state can be effectively improved, thereby improving the yield and service life of the human eye protection optical module 100 (see FIG. 1).

In the present embodiment, the conductive lens 120 may be a light diffusing lens. For example, the bottom surface 121 of the conductive lens 120 can be etched or embossed to have a plurality of microstructures 127. The conductive lens 120 can diffuse light (such as a laser) of the light-emitting element 150 to the human eye through the microstructure 127. Outside the optical module 100 (see Figure 1), to avoid high-energy light directly hitting the human eye and causing injury. The microstructure 127 shown in FIG. 3 is merely illustrative, and its shape and arrangement are not intended to limit the present type.

FIG. 5 is a schematic circuit diagram of the human eye protection optical module 100 of FIG. 1 . Since the second conductive path 122 itself can function as a resistor, FIG. 5 shows the second conductive path 122 of FIG. 2 in a resistive pattern. When the conductive lens 120 is broken or dropped by an external force or other factors, the difference in resistance can be detected by the first conductive path 116 and the second conductive path 122 to power off the light emitting element 150.

It should be understood that the component connection relationships and materials that have been described will not be repeated, and will be described first. In the following description, other forms of human eye protection optical modules will be described. In addition, in order to make the drawing clear and concise, in the 6th and 8th drawings, other types of conductive paths will be indicated by a resistance pattern, which will be described first.

FIG. 6 is a schematic circuit diagram of a human eye protection optical module 100a according to an embodiment of the present invention. Figure 7 is a cross-sectional view of the human eye protection optical module 100a of Figure 6 taken along line 7-7. Also refer to Figure 6 and Figure 7, Human Eyes The protective optical module 100a includes a support member 110, a conductive lens 120, and a light-emitting element 150. The difference from the embodiment of FIG. 5 is that the number of the second conductive paths is two (ie, the second conductive paths 122a, 122b), and the second conductive paths 122b may be located below the second conductive paths 122a and electrically insulated from each other. That is, the second conductive paths 122a, 122b are located in different layers.

Further, the second conductive paths 122a, 122b have quadrilateral structures 128a, 128b, respectively. The quadrilateral structures 128a, 128b surround the accommodating space S. The two ends 123a, 124a of the second conductive path 122a are respectively located at opposite corners (for example, the upper left corner and the lower right corner) of the top surface 115 of the side wall 114 (see FIG. 2). The two ends 123b, 124b of the second conductive path 122b are respectively located at opposite corners (for example, the upper right corner and the lower left corner) of the top surface 115 of the side wall 114. In addition, referring to FIG. 2 and FIG. 6 simultaneously, the number of the first conductive paths 116 is four, and the four first ends 117 of the four first conductive paths 116 are respectively located at four corners of the top surface 115 of the sidewall 114, and the second conductive The two ends 123a, 124a of the path 122a and the two ends 123b, 124b of the second conductive path 122b are electrically connected to the four first ends 117 of the four first conductive paths 116, respectively.

In the present embodiment, the second conductive paths 122a, 122b are located in different layers, and the conductive path is designed to be more flexible. Regardless of which corner of the support member 110 is broken or detached from the conductive member 120, a difference in resistance can be detected via the first conductive path 116 and the second conductive paths 122a, 122b. The human eye protection optical module 100a detects the resistance change of the conductive lens 120 by using four points, which can effectively improve the accuracy.

In the present embodiment, the human eye protection optical module 100a further includes insulating layers 125a and 125b. The insulating layer 125a is located on the two second conductive paths 122a, A second conductive path 122b between 122b and located below is located between the two insulating layers 125a, 125b. The insulating layers 125a, 125b can provide protection and insulation to the second conductive paths 122a, 122b.

FIG. 8 is a schematic circuit diagram of a human eye protection optical module 100b according to an embodiment of the present invention. The human eye protection optical module 100b includes a support member 110, a conductive lens 120, and a light emitting element 150. The human eye protection optical module 100b has four second conductive paths 122 of FIG. 5 and second conductive paths 122a, 122b of FIG. The second conductive paths 122a, 122b are located in different layers. In an embodiment, the second conductive path 122 can be in the same layer as one of the second conductive paths 122a, 122b. In another embodiment, the second conductive paths 122, 122a, 122b can be located in different layers. Therefore, the design of the conductive path will be more flexible.

Referring to FIG. 2 and FIG. 8 simultaneously, in the embodiment, the number of the first conductive paths 116 is four, and the four first ends 117 of the four first conductive paths 116 are respectively located at the top surface 115 of the sidewall 114. corner. That is, each corner has a first end 117. The two ends 123, 124 of the second conductive path 122, the two ends 123a, 124a of the second conductive path 122a and the two ends 123b, 124b of the second conductive path 122b and the four first ends 117 of the four first conductive paths 116 are electrically Sexual connection. In this way, no matter which corner of the support member 110 is broken or detached from the conductive member 120, the difference in resistance can be detected through the first conductive path 116 and the second conductive paths 122, 122a, and 122b. The human eye protection optical module 100b utilizes twelve points to detect the resistance change of the conductive lens 120, which can effectively improve the accuracy.

Although the present invention has been disclosed in the above embodiments, it is not In order to limit the present invention, any person skilled in the art can make various changes and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention is subject to the scope defined in the appended patent application. .

Claims (10)

A human eye protection optical module includes: a support member having a plurality of first conductive paths, a bottom plate and a side wall on the bottom plate, the side walls surrounding an accommodating space, each of the first conductive paths Having a first end and a second end, the first end is located on a top surface of the side wall, the second end is located on a bottom surface of the support member; a metal bonding layer covering the top surface of the side wall, and having a plurality of notches, wherein the first ends of the first conductive paths are located in the notches; a conductive lens is disposed on the metal bonding layer, the conductive lens has a plurality of second conductive paths, and the second conductive a path surrounding the accommodating space, wherein two ends of each of the second conductive paths are respectively electrically connected to two of the first ends of the first conductive paths; and a light emitting element is located at the support The light-emitting element is powered off when the difference in resistance is detected by the first conductive paths and the second conductive paths. The human eye protection optical module of claim 1, wherein the conductive lens has a quadrangular shape and four sides, the number of the second conductive paths is four, and the four second conductive paths are respectively located at the conductive The four sides of the lens. The human eye protection optical module of claim 2, wherein the side wall has a quadrangular shape and four sides, the number of the notches of the metal bonding layer is four, and the number of the first conductive paths is four. The four first ends of the four first conductive paths are respectively located at the four corners of the top surface of the sidewall drop. The human eye protection optical module of claim 1, wherein the conductive lens comprises: an insulating layer covering the second conductive paths such that the second conductive paths are electrically insulated from the metal bonding layer. The human eye protection optical module of claim 1, further comprising: an insulating layer disposed in the notches of the metal bonding layer and surrounding the first ends of the first conductive paths. The human eye protection optical module of claim 5, wherein the insulating layer is located between the first ends of the first conductive paths, the metal bonding layer, the conductive lens and the top surface of the sidewall. The human eye protection optical module of claim 1, wherein the conductive lens has a quadrangular shape and four sides, the number of the second conductive paths is two, and one of the two second conductive paths is located at another One of them is electrically insulated from each other, and each of the two second conductive paths has a quadrilateral structure surrounding the accommodating space. The human eye protection optical module of claim 7, wherein the side wall has a quadrangular shape and four sides, the number of the notches of the metal bonding layer is four, and the number of the first conductive paths is four. The fourth The four first ends of a conductive path are respectively located at four corners of the top surface of the side wall. The human eye protection optical module of claim 7, further comprising: two insulating layers, one of which is located between the two second conductive paths, and the second conductive path located below is located at the two insulating layers between. The human eye protection optical module of claim 1, wherein the conductive lens has a bottom surface facing the support member and a gold plating layer, the gold plating layer being located on the bottom surface of the conductive lens and in contact with the metal bonding layer.