TWI567421B - Lens module - Google Patents

Description

Lens module

The present invention relates to an optical module, and more particularly to a lens module.

The lens module is generally installed in the door of the family or in the door of the restaurant, which allows the user (the person inside the door) to see the scene outside the door without opening the door. In this way, it is possible to prevent external unscrupulous people from forcibly invading by using the timing of opening the door, thereby improving the safety of living. However, the viewing angle of a conventional lens module (such as a horizontal viewing angle) is only 120 degrees, so the user cannot view more than 120 degrees. In the case where there is a dead space in the field of view, the user may misjudge the situation outside the door and affect the safety of the living. Therefore, how to improve the perspective of the lens module has become one of the problems that researchers in this field want to solve.

The present invention provides a lens module that can have a larger range of viewing angles.

A lens module of the present invention is disposed on a door panel. The door panel has an inner surface, an outer surface opposite the inner surface, and a communication hole communicating the inner surface and the outer surface. The lens module is configured to pass at least one light beam. The lens module includes a first lens, a second lens, and at least one beam splitter. The first lens and the second lens are disposed in the communication hole, and the second lens is located between a side of the communication hole close to the outer surface and the first lens. The at least one beam splitter is disposed on a side of the communication hole near the outer surface and protrudes from the outer surface. When the at least one light beam is incident on the at least one beam splitter, the at least one light beam sequentially passes through the at least one beam splitter and the second lens and is emitted from the first lens.

In an embodiment of the invention, the first lens comprises a convex lens, and the second lens comprises a concave lens.

In an embodiment of the invention, the lens module further includes a housing. The housing is adapted to fix the first lens, the second lens, and the at least one beam splitter to the door panel.

In an embodiment of the invention, the housing includes a first portion and a second portion. The first portion has a first embedded portion and a first limit portion. The first limiting portion is coupled to the end of the first embedded portion. The second portion has a second embedded portion and a second limit portion. The second limiting portion is coupled to the end of the second embedded portion. The first embedding portion and the second embedding portion are adapted to be inserted into the communication hole, and the second embedding portion is located between the first embedding portion and the communication hole. The first lens and the second lens are disposed in the first embedded portion. The first limiting portion is located outside the communication hole and is fixed to the outer surface, and the second limiting portion is located outside the communication hole and is fixed to the inner surface.

In an embodiment of the invention, the first embedded portion and the second embedded portion are both hollow annular structures, and the outer diameter of the first embedded portion is less than or equal to the inner diameter of the second embedded portion. The first embedded portion is adapted to be inserted into the second embedded portion.

In an embodiment of the invention, the at least one beam splitter is partially embedded in the first limiting portion.

In an embodiment of the invention, the at least one light beam includes a first light beam and a second light beam, and the first incident direction of the first light beam is opposite to the second light incident direction of the second light beam. The at least one beam splitter includes a first beam splitter and a second beam splitter. The optical axis of the first beam is 45 degrees from the beam splitting surface of the first beam splitter, and the optical axis of the second beam is different from the splitting surface of the second beam splitter. 45 degree. The first beam splitter and the second beam splitter are juxtaposed on one side of the communication hole near the outer surface and protrude from the outer surface. The first light beam sequentially passes through the first beam splitter and the second lens, and is emitted from the first lens, and the second light beam sequentially passes through the second beam splitter and the second lens, and is emitted from the first lens.

In an embodiment of the invention, the at least one light beam further includes a third light beam, and the third incident direction of the third light beam is perpendicular to the first incident direction of the first light beam and the second incident direction of the second light beam. The at least one beam splitter further includes a third beam splitter, and the optical axis of the third beam is 45 degrees from the beam splitting surface of the third beam splitter. The third beam splitter is disposed on a side of the communication hole near the outer surface and protrudes from the outer surface and is located below the first beam splitter and the second beam splitter. The third beam sequentially passes through the third beam splitter and the second lens, and is emitted from the first lens.

In an embodiment of the invention, the at least one beam further includes a fourth beam, and the fourth incident direction of the fourth beam is opposite to the third incident direction of the third beam. The at least one beam splitter further includes a fourth beam splitter, and the optical axis of the fourth beam is 45 degrees from the beam splitting surface of the fourth beam splitter. The fourth beam splitter is disposed on a side of the communication hole near the outer surface and protrudes from the outer surface and is located above the first beam splitter and the second beam splitter. The fourth beam sequentially passes through the fourth beam splitter and the second lens, and is emitted from the first lens.

Based on the above, the embodiment of the present invention configures the beam splitter outside the door panel and in front of the second lens. In this way, the large-angle beam can be guided to the user's eyes through the action of the beam splitter (including penetration and reflection), thereby improving the viewing angle of the lens module. Therefore, the lens module of the embodiment of the present invention can have a larger ideal viewing angle range.

The above described features and advantages of the invention will be apparent from the following description.

1A is a schematic view showing a lens module and a lens module disposed on a door panel according to a first embodiment of the present invention, and the detailed structure of at least one of the beam splitters 132 and 134 in FIG. 1A is as shown by a dotted circle. FIG. 1B is a top plan view of the lens module of FIG. 1A. Referring to FIG. 1A and FIG. 1B, the lens module 100 is disposed on the door panel DR and is provided for at least one light beam, and is adapted to allow the user O to observe the scene outside the door panel DR (for example, confirming the identity of the visitor). The door panel DR has an inner surface S1, an outer surface S2 opposed to the inner surface S1, and a communication hole PH communicating the inner surface S1 and the outer surface S2.

The lens module 100 includes a first lens 110, a second lens 120, and at least one beam splitter. In this embodiment, the number of the at least one beam splitter is two and includes a first beam splitter 132 and a second beam splitter 134, wherein the first beam splitter 132 and the second beam splitter 134 are disposed side by side in the communication hole PH. One side of the surface S2 protrudes from the outer surface S2. For example, the arrangement direction of the first beam splitter 132 and the second beam splitter 134 is parallel to the bottom edge EB of the outer surface S2, but is not limited thereto. According to different design requirements, the number of the at least one beam splitter and its arrangement direction can be adjusted.

The first lens 110 and the second lens 120 are disposed in the communication hole PH, and the second lens 120 is located between the side of the communication hole PH close to the outer surface S2 and the first lens 110. That is, the light beam entering the communication hole PH is first collected by the second lens 120 and then passed through the first lens 110 to the eye E of the user O. The first lens 110 and the second lens 120 may each be composed of one or more lenses. In the present embodiment, the first lens 110 includes a convex lens, and the second lens 120 includes a concave lens. However, the actual number of lenses of the first lens 110 and the second lens 120 and the distance D between the first lens 110 and the second lens 120 may vary according to different design parameters (such as focal length), and are not limited to the illustrated figures. By.

The first beam splitter 132 and the second beam splitter 134 are juxtaposed on one side of the communication hole PH close to the outer surface S2 and protrude from the outer surface S2. As such, when the at least one light beam is incident on the at least one beam splitter, the at least one light beam may sequentially pass through the at least one beam splitter and the second lens 120 and be emitted from the first lens 110 to be concentrated. To the eye E of the user O. 1A and 1B schematically illustrate three light beams from outside the door panel DR, including a front light beam L from the front of the communication hole PH and a first light beam L1 and a second light beam L2 from both sides of the communication hole PH. The first incident direction D1 of the first light beam L1 (in the direction in which the first light beam L1 enters the first beam splitter 132) and the second incident direction D2 of the second light beam L2 (indicating that the second light beam L2 is incident on the second beam splitter 134) The direction is reversed, and the optical axis of the first light beam L1 is 45 degrees from the light splitting surface S132B of the first beam splitter 132, and the optical axis of the second light beam L2 is 45 degrees from the light splitting surface S134B of the second beam splitter 134. That is, the angle θ between the first light beam L1 and the second light beam L2 is 180 degrees. Further, the first incident direction D1 and the second incident direction D2 are, for example, parallel to the bottom edge EB of the outer surface S2, respectively. The incident direction DD of the front beam L is perpendicular to the first incident direction D1, the second incident direction D2, and the outer surface S2.

The first light beam L1 sequentially passes through the first beam splitter 132 and the second lens 120, and is emitted from the first lens 110 and transmitted to the eye E of the user O. Further, the first light beam L1 first passes through the surface S132A of the first beam splitter 132 and is transmitted to the light splitting surface S132B of the first beam splitter 132. The light splitting surface S132B is adapted to allow a portion of the first light beam L1 to penetrate and to reflect the remaining portion of the first light beam L1. The first light beam L1 reflected by the spectroscopic surface S132B then penetrates the surface (not labeled) of the first dichroic mirror 132 toward the communication hole PH and is transmitted to the communication hole PH, and sequentially passes through the second lens 120 and the first lens 110. Passed to the eye E of the user O.

The second light beam L2 sequentially passes through the second beam splitter 134 and the second lens 120, and is emitted from the first lens 110 and transmitted to the eye E of the user O. Further, the second light beam L2 first passes through the surface S134A of the second beam splitter 134 and is transmitted to the light splitting surface S134B of the second beam splitter 134. The light splitting surface S134B is adapted to allow a portion of the second light beam L2 to penetrate and to reflect the remaining portion of the second light beam L2. The second light beam L2 reflected by the spectroscopic surface S134B then penetrates the surface (not labeled) of the second dichroic mirror 134 toward the communication hole PH and is transmitted to the communication hole PH, and sequentially passes through the second lens 120 and the first lens 110. Passed to the eye E of the user O.

The front light beam L sequentially passes through one of the first beam splitter 132 and the second beam splitter 134 and the second lens 120, and is emitted from the first lens 110 and transmitted to the eye E of the user O. Further, the partial front light beam L first passes through the surface S132C of the first beam splitter 132 and is transmitted to the light splitting surface S132B of the first beam splitter 132. The light splitting surface S132B is adapted to allow a portion of the front light beam L penetrating the surface S132C to penetrate and reflect the remaining portion. The front light beam L penetrating the spectroscopic surface S132B then penetrates the surface (not labeled) of the first dichroic mirror 132 toward the communication hole PH and is transmitted to the communication hole PH, and is sequentially transmitted through the second lens 120 and the first lens 110. To the eye E of the user O. On the other hand, another portion of the front light beam L from the outside passes through the surface S134C of the second beam splitter 134 and is transmitted to the light splitting surface S134B of the second beam splitter 134. The light splitting surface S134B is adapted to allow a portion of the front light beam L penetrating the surface S134C to penetrate and reflect the remaining portion. The front light beam L that penetrates the light splitting surface S134B then penetrates the surface (not labeled) of the second beam splitter 134 toward the communication hole PH and is transmitted to the communication hole PH, and is sequentially transmitted through the second lens 120 and the first lens 110. To the eye E of the user O.

The lens module 100 can receive the light beams from the left and right sides of the doorway (ie, the first light beam L1 and the second light beam L2) by the arrangement of the first beam splitter 132 and the second beam splitter 134, so that the horizontal angle of view of the lens module 100 It is extended to 180 degrees (ie, the angle θ between the first light beam L1 and the second light beam L2), thereby contributing to the safety of the user O.

FIG. 2 is a schematic diagram of another lens module according to a first embodiment of the present invention, wherein FIG. 2 omits the second lens 120 and the first lens 110. Referring to FIG. 2, the lens module 100A is similar to the lens module 100 of FIG. 1A and FIG. 1B, wherein the same or similar elements are denoted by the same reference numerals and will not be described again. The main difference between the lens module 100A and the lens module 100 is that the lens module 100A further includes a housing 140. The housing 140 is adapted to fix the first lens 110, the second lens 120 (see FIGS. 1A and 1B), and the at least one beam splitter (such as the first beam splitter 132 and the second beam splitter 134) to the door panel DR (see Figure 1A and Figure 1B).

3A to 3C are respectively three cross-sectional views of the lens module of FIG. 2, wherein the shapes of the housings 140 are the same, and the main difference between FIG. 3A and FIG. 3C is a beam splitter (such as the first beam splitter 132 and the second). The manner in which the beam splitter 134) is fixed. It should be noted that the implementation form of the lens module 100A or the housing 140 is not limited to those illustrated in FIGS. 3A to 3C.

Referring to FIGS. 3A-3C , the housing 140 may include a first portion 142 and a second portion 144 . The first portion 142 has a first embedded portion 142A and a first limiting portion 142B, and the first limiting portion 142B is coupled to an end of the first embedded portion 142A. The second portion 144 has a second embedded portion 144A and a second limiting portion 144B, and the second limiting portion 144B is coupled to the end of the second embedded portion 144A.

The first embedding portion 142A and the second embedding portion 144A are adapted to be inserted into the communication hole PH, and the second embedding portion 144A is located between the first embedding portion 142A and the communication hole PH. The first lens 110 and the second lens 120 are disposed in the first embedded portion 142A. The first embedding portion 142A and the second embedding portion 144A may each be a hollow annular structure, wherein the outer diameter RO142A of the first embedding portion 142A is less than or equal to the inner diameter RI144A of the second embedding portion 144A, so that the first embedding portion 142A is adapted The second embedding portion 144A is inserted. Further, the outer diameters RO142A, RO144A of the first fitting portion 142A and the second fitting portion 144A are respectively smaller than or equal to the diameter DPH of the communication hole PH, so that the first fitting portion 142A and the second fitting portion 144A are inserted into the communication hole PH. Further, the lengths L142A, L144A of the first fitting portion 142A and the second fitting portion 144A are respectively smaller than or equal to the length LPH of the communication hole PH.

The first limiting portion 142B is located outside the communication hole PH and is fixed to the outer surface S2, and the second limiting portion 144B is located outside the communication hole PH and is fixed to the inner surface S1. Specifically, the outer diameters RO142B and RO144B of the first limiting portion 142B and the second limiting portion 144B may be larger than the diameter DPH of the communication hole PH, respectively. After the first embedded portion 142A and the second embedded portion 144A are inserted into the communication hole PH, the first limiting portion 142B is located outside the communication hole PH and is fixed to the outer surface S2, and the second limiting portion 144B is located outside the communication hole PH. And fixed to the inner surface S1.

In this embodiment, the at least one beam splitter (such as the first beam splitter 132 and the second beam splitter 134) is partially embedded in the first limiting portion 142B, for example. The materials of the first limiting portion 142B and the second limiting portion 144B may be opaque materials, respectively. In order to enable the second lens 120 to receive a light beam from the outside (such as the first light beam L1, the second light beam L2, and the front light beam L), and after the light beam enters the housing 140, it can be emitted from the housing 140 and transmitted to the user O. In the eye E, the first limiting portion 142B needs to have the first opening O1, and the second limiting portion 144B needs to have the second opening O2.

The first beam splitter 132 and the second beam splitter 134 may be fixed to the first opening O1. As shown in FIG. 3A, the first beam splitter 132 and the second beam splitter 134 (shown in FIG. 2) may be partially embedded in the first opening O1. Alternatively, as shown in FIG. 3B and FIG. 3C, the first beam splitter 132 (and the second beam splitter 134) may be fixed to the light entering the first opening O1 through the fixing member 150 or the adhesive layer 160. In this way, the light beams (such as the first light beam L1, the second light beam L2, and the front light beam L) may sequentially pass through one of the first beam splitter 132 and the second beam splitter 134, the first opening O1, the second lens 120, and The first lens 110 is emitted from the second opening O2 and transmitted to the eye E of the user O. Specifically, after the light beam passes through the action of the first beam splitter 132 or the second beam splitter 134 (including penetration and reflection), the light beam sequentially passes through the first opening O1, the second lens 120, the first lens 110, and the second opening. The hole O2 is transmitted to the eye E of the user O.

4A and 4B are respectively schematic views of other lens modules in accordance with a first embodiment of the present invention. Referring to FIG. 4A, the lens module 100B is similar to the lens module 100A of FIG. 2, wherein the same or similar elements are denoted by the same reference numerals and will not be described again. The main difference between the lens module 100B and the lens module 100A is that the material of the first limiting portion 142B' of the first portion 142' is a light-transmitting material, such as acrylic, but not limited thereto. The material of the first fitting portion 142A may be the same or different from the material of the first limiting portion 142B'. When the material of the first fitting portion 142A is different from the material of the first stopper portion 142B', the two can be separately fixed and fixed to each other. On the other hand, when the material of the first embedding portion 142A is the same as the material of the first limiting portion 142B′, the two can be formed together, that is, the first embedding portion 142A and the first limiting portion 142B′ can be integrally formed. But not limited to this.

Since the first limiting portion 142B' is made of a light-transmitting material, the first limiting portion 142B' can cover the first beam splitter 132 and the second beam splitter 134 (not shown in FIG. 4A), that is, the first The beam splitter 132 and the second beam splitter 134 (not shown in FIG. 4A) may be fixed in the first limiting portion 142B'. In this way, the first beam splitter 132 and the second beam splitter 134 can be prevented from falling off or being damaged by an external force.

Referring to FIG. 4B, the lens module 100C is similar to the lens module 100B of FIG. 4A, wherein the same or similar elements are denoted by the same reference numerals and will not be described again. The main difference between the lens module 100C and the lens module 100B is that the first limiting portion 142B" of the first portion 142" has a first opening O1, and the first beam splitter 132 and the second beam splitter 134 (FIG. 4B) Not shown) is fixed in the first opening O1. When the light beam (such as the first light beam L1, the second light beam L2, and the front light beam L) is incident on the first opening O1, the light beam may sequentially pass through the first beam splitter 132 and the second beam splitter 134 (not shown in FIG. 4B). One of the second lens 120 and the first lens 110 is emitted from the second opening O2 and transmitted to the eye E of the user O.

5 is a schematic view of a lens module and a lens module disposed on a door panel according to a second embodiment of the present invention, and the detailed structure of at least one of the beam splitters 132, 134, and 136 in FIG. 5 is a dotted circle circle. Show. Referring to FIG. 5, the lens module 200 is similar to the lens module 100 of FIG. 1A and FIG. 1B, wherein the same or similar elements are denoted by the same reference numerals and will not be described again.

The main difference between the lens module 200 and the lens module 100 is that the at least one beam splitter further includes a third beam splitter 136. The third beam splitter 136 is disposed on a side of the communication hole PH close to the outer surface S2 and protrudes from the outer surface S2, and the third beam splitter 136 is located below the first beam splitter 132 and the second beam splitter 134. The at least one light beam further includes a third light beam L3, the optical axis of the third light beam L3 is 45 degrees from the light splitting surface S136B of the third beam splitter 136, and the third incident direction D3 of the third light beam L3 is opposite to the first light beam L1. The first incident direction D1 and the second incident direction D2 of the second light beam L2 are perpendicular.

The third light beam L3 sequentially passes through the third beam splitter 136 and the second lens 120, and is emitted from the first lens 110 and transmitted to the eye E of the user O. Specifically, the third light beam L3 is, for example, perpendicular to the bottom edge EB of the door panel DR, and the third light beam L3 first passes through the surface S136A of the third beam splitter 136 and is transmitted to the light splitting surface S136B of the third beam splitter 136. The light splitting surface S136B is adapted to allow a portion of the third light beam L3 to penetrate and to reflect the remaining portion of the third light beam L3. The third light beam L3 reflected by the spectroscopic surface S136B then penetrates the surface (not labeled) of the third dichroic mirror 136 toward the communication hole PH and is transmitted to the communication hole PH, and sequentially passes through the second lens 120 and the first lens 110. Passed to the eye E of the user O.

By the arrangement of the third beam splitter 136, the lens module 200 can receive the light beam from the bottom of the doorway in addition to the light beams from the left and right sides of the doorway (ie, the first light beam L1 and the second light beam L2) (ie, The third light beam L3). In this way, the lens module 200 can have an ideal horizontal viewing angle and a vertical viewing angle, so that the problem that the user O is safely occupied due to the dead angle of the visual field can be solved.

6 is a schematic view showing a lens module and a lens module disposed on a door panel according to a third embodiment of the present invention, and the detailed structure of at least one of the beam splitters 132, 134, 136, and 138 in FIG. Selected as shown. Referring to FIG. 6 , the lens module 300 is similar to the lens module 200 of FIG. 5A and FIG. 5B , wherein the same or similar elements are denoted by the same reference numerals and will not be described again.

The main difference between the lens module 300 and the lens module 200 is that the at least one beam splitter further includes a fourth beam splitter 138. The fourth beam splitter 138 is disposed on a side of the communication hole PH close to the outer surface S2 and protrudes from the outer surface S2, and the fourth beam splitter 138 is located above the first beam splitter 132 and the second beam splitter 134. The at least one light beam further includes a fourth light beam L4, the optical axis of the fourth light beam L4 is 45 degrees from the light splitting surface S138B of the fourth beam splitter 138, and the fourth incident direction D4 of the fourth light beam L4 and the third light beam L3 The third incident direction D3 is opposite.

The fourth light beam L4 sequentially passes through the fourth beam splitter 138 and the second lens 120, and is emitted from the first lens 110 and transmitted to the eye E of the user O. Specifically, the fourth light beam L4 is also perpendicular to the bottom edge EB of the door panel DR, and the fourth light beam L4 first passes through the surface S138A of the fourth beam splitter 138 and is transmitted to the light splitting surface S138B of the fourth beam splitter 138. The light splitting surface S138B is adapted to allow a portion of the fourth light beam L4 to penetrate and to reflect the remaining portion of the fourth light beam L4. The fourth light beam L4 reflected by the spectroscopic surface S138B then passes through the surface (not labeled) of the fourth dichroic mirror 138 toward the communication hole PH and is transmitted to the communication hole PH, and sequentially passes through the second lens 120 and the first lens 110. Passed to the eye E of the user O.

By the arrangement of the fourth beam splitter 138, the lens module 300 can receive the light beams from the left and right sides of the doorway (ie, the first light beam L1 and the second light beam L2) and the light beam from the lower side of the door opening (ie, the third light beam L3). In addition, a light beam from above the doorway (i.e., the fourth light beam L4) can also be received. In this way, the vertical viewing angle of the lens module 300 can be further improved.

In summary, in the embodiment of the present invention, the beam splitter is disposed outside the door panel and located in front of the second lens. In this way, the large-angle beam can be guided to the user's eyes through the action of the beam splitter (including penetration and reflection), thereby improving the viewing angle of the lens module. Therefore, the lens module of the embodiment of the present invention can have an ideal viewing angle.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.

100, 100A, 100B, 100C, 200, 300‧‧‧ lens modules
110‧‧‧first lens
120‧‧‧second lens
132‧‧‧First Beamsplitter
134‧‧‧Second beam splitter
136‧‧‧third beam splitter
138‧‧‧fourth beam splitter
140‧‧‧shell
142, 142', 142''‧‧‧ first part
142A‧‧‧First Embedding Department
142B, 142B', 142B''‧‧‧ First Limit
144‧‧‧Part II
144A‧‧‧Second Embedded Department
144B‧‧‧Second Limitation
150‧‧‧Fixed parts
160‧‧‧Adhesive layer
D‧‧‧Distance
D1‧‧‧first incident direction
D2‧‧‧second incident direction
D3‧‧‧ third incident direction
D4‧‧‧fourth incident direction
DD‧‧‧Injection direction of the front beam
DPH‧‧‧ diameter
DR‧‧‧ door panel

E‧‧ Eye

EB‧‧‧Bottom

L‧‧‧front beam

L1‧‧‧first beam

L2‧‧‧second beam

L3‧‧‧ third beam

L4‧‧‧fourth beam

L142A, L144A, LPH‧‧‧ length

O‧‧‧ users

O1‧‧‧ first opening

O2‧‧‧Second opening

PH‧‧‧Connected holes

RO142A, RO144A, RO142B, RO144B‧‧‧ OD

RI144A‧‧‧Inner diameter

S1‧‧‧ inner surface

S2‧‧‧ outer surface

S132A, S132C, S134A, S134C, S136A, S138A‧‧‧ surface

S132B, S134B, S136B, S138B‧‧ ‧ splitting surface

Θ‧‧‧ angle

1A is a schematic view showing a lens module and a lens module disposed on a door panel according to a first embodiment of the present invention. FIG. 1B is a top plan view of the lens module of FIG. 1A. 2 is a schematic view of another lens module in accordance with a first embodiment of the present invention. 3A to 3C are three cross-sectional views of the lens module of Fig. 2, respectively. 4A and 4B are respectively schematic views of other lens modules in accordance with a first embodiment of the present invention. FIG. 5 is a schematic diagram of a lens module and a lens module disposed on a door panel according to a second embodiment of the present invention. 6 is a schematic view showing a lens module and a lens module disposed on a door panel according to a third embodiment of the present invention.

100‧‧‧ lens module

110‧‧‧first lens

120‧‧‧second lens

132‧‧‧First Beamsplitter

134‧‧‧Second beam splitter

D‧‧‧Distance

D1‧‧‧first incident direction

D2‧‧‧second incident direction

DD‧‧‧Injection direction of the front beam

DR‧‧‧ door panel

E‧‧ Eye

L‧‧‧front beam

L1‧‧‧first beam

L2‧‧‧second beam

PH‧‧‧Connected holes

S1‧‧‧ inner surface

S2‧‧‧ outer surface

S132A, S132C, S134A, S134C‧‧‧ surface

S132B, S134B‧‧ ‧ split surface

Θ‧‧‧ angle

Claims (9)

A lens module is disposed on a door panel, the door panel has an inner surface, an outer surface opposite to the inner surface, and a communication hole connecting the inner surface and the outer surface, the lens module is configured to pass at least one light beam, The lens module includes: a first lens disposed in the communication hole; a second lens disposed in the communication hole and located between a side of the communication hole adjacent to the outer surface and the first lens; And at least one beam splitter disposed on a side of the communication hole adjacent to the outer surface and protruding from the outer surface, and when the at least one light beam is incident on the at least one beam splitter, the at least one light beam sequentially passes through the at least one The beam splitter and the second lens are emitted from the first lens. The lens module of claim 1, wherein the first lens comprises a convex lens, and the second lens comprises a concave lens. The lens module of claim 1, further comprising: a housing adapted to fix the first lens, the second lens, and the at least one beam splitter to the door panel. The lens module of claim 3, wherein the housing comprises a first portion and a second portion, the first portion having a first embedding portion and a first limiting portion, the first limiting portion The second portion has a second embedding portion and a second limiting portion, the second limiting portion is connected to the end of the second embedding portion, the first portion The insertion portion and the second insertion portion are adapted to be inserted into the communication hole, and the second insertion portion is located at the first insertion portion and the communication hole The first lens and the second lens are disposed in the first insertion portion, the first limiting portion is located outside the communication hole and is fixed to the outer surface, and the second limiting portion is located outside the communication hole And fixed to the inner surface. The lens module of claim 4, wherein the first embedded portion and the second embedded portion are both a hollow annular structure, and an outer diameter of the first embedded portion is less than or equal to the second embedded portion. The inner diameter of the portion, the first embedding portion is adapted to be inserted into the second embedding portion. The lens module of claim 4, wherein the at least one beam splitter is partially embedded in the first limiting portion. The lens module of claim 1, wherein the at least one light beam comprises a first light beam and a second light beam, and a first incident direction of the first light beam and a second one of the second light beam The at least one beam splitter includes a first beam splitter and a second beam splitter. The optical axis of the first beam is 45 degrees from a splitting surface of the first beam splitter, and the optical axis of the second beam is The first beam splitter and the second beam splitter are disposed side by side on the side of the communication hole adjacent to the outer surface and protrude from the outer surface, and the first light beam is The first beam splitter and the second lens are sequentially emitted from the first lens, and the second light beam sequentially passes through the second beam splitter and the second lens, and is emitted from the first lens. The lens module of claim 7, wherein the at least one light beam further comprises a third light beam, and a third incident direction of the third light beam and the first incident direction of the first light beam and the The second incident direction of the second beam is perpendicular, The at least one beam splitter further includes a third beam splitter, the optical axis of the third beam is 45 degrees from a splitting surface of the third beam splitter, and the third beam splitter is disposed on the connecting hole close to the outer surface The side surface protrudes from the outer surface and is located below the first beam splitter and the second beam splitter. The third light beam sequentially passes through the third beam splitter and the second lens, and is emitted from the first lens. The lens module of claim 8, wherein the at least one light beam further comprises a fourth light beam, and a fourth incident direction of the fourth light beam is opposite to the third incident direction of the third light beam, The at least one beam splitter further includes a fourth beam splitter, the optical axis of the fourth beam is 45 degrees from a splitting surface of the fourth beam splitter, and the fourth beam splitter is disposed on the connecting hole close to the outer surface And protruding from the outer surface and above the first beam splitter and the second beam splitter, the fourth light beam sequentially passes through the fourth beam splitter and the second lens, and is emitted from the first lens.