Beam path folding module, camera module and electronic device

Abstract

Ray path folding module (200), comprising: a beam path folding element (210) for folding an incident optical axis (Oi) into an exiting optical axis (Oe), wherein the optical path folding element (210) comprises: a light incident surface (211), wherein the incident optical axis (Oi) traverses and enters the light incident surface (211), and a light exit surface (212), wherein the exiting optical axis (Oe) passes through the light exit surface (212) and extends away from it, and an opaque body (220) arranged corresponding to the optical path folding element (210), the opaque body (220) comprising: an open ring structure, wherein the emerging optical axis (Oe) passes through a notch opening (2212) of the open ring structure, and a plurality of light blocking elements (2222) extending from the open ring structure in a direction perpendicular to the exiting optical axis (Oe) toward the exiting optical axis (Oe), wherein the plurality of light blocking elements (2222) are arranged adjacent to the light exit surface (212) of the optical path folding element (210), wherein, when the exiting optical axis (Oe) is regarded as the center of a circle, with θe being an angle occupied by the plurality of light blocking elements (2222) and Ne being the number of the plurality of light blocking elements (2222), the following conditions are met: 10 ° < θ e < 350 ° and 15 < N < 460.

Description

BACKGROUNDField of expertise

[0001] The present disclosure relates to a light path folding module and a camera module. More particularly, the present disclosure relates to a light path folding module and a camera module applicable to portable electronic devices. Description of the previously known technology

[0002] In recent years, wearable electronic devices have developed rapidly. For example, smart electronic devices and tablets have entered modern people's lives, and camera modules built into wearable electronic devices have also increased. However, as technology advances, the quality requirements for camera modules have also increased. Therefore, the development of a camera module that can improve image quality has become a significant and urgent problem for the industry. SUMMARY

[0003] In one aspect of the present disclosure, an optical path folding module includes an optical path folding element and an opaque body. The optical path folding element is for folding an incident optical axis into an exiting optical axis, and the optical path folding element has a light incident surface and a light exiting surface. The incident optical axis passes through and enters the light incident surface. The exiting optical axis passes through and exits the light exiting surface. The opaque body is arranged correspondingly to the optical path folding element, and the opaque body has an open ring structure and a plurality of light blocking elements. The exiting optical axis passes through a notch opening of the open ring structure.The plurality of light-blocking elements protrude from the open ring structure in a direction perpendicular to the exit optical axis toward the exit optical axis, with the plurality of light-blocking elements being arranged adjacent to the light-exit surface of the optical path folding element. When the exit optical axis is considered as the center of a circle, θe is an angle occupied by the plurality of light-blocking elements and Ne is the number of the plurality of light-blocking elements, satisfying the following conditions: 10° < θe < 350° and 15 < Ne < 460.

[0004] In the optical path folding module of the preceding aspect, each of the plurality of light blocking elements projects toward the outgoing optical axis and progressively shrinks and overlaps.

[0005] In the optical path folding module of the preceding aspect, the opaque body and the plurality of light blocking elements are integrally formed.

[0006] In the optical path folding module of the foregoing aspect, when the outgoing optical axis is regarded as the center of a circle, with θe being an angle occupied by the plurality of light blocking elements and Ne being the number of the plurality of light blocking elements, the following conditions are satisfied: 10° < θe < 150° and 15 < Ne < 250.

[0007] In the optical path folding module of the foregoing aspect, when the outgoing optical axis is regarded as the center of a circle, with θe being an angle occupied by the plurality of light blocking elements and Ne being the number of the plurality of light blocking elements, the following conditions are satisfied: 110° < θe < 350° and 50 < Ne < 300.

[0008] In the optical path folding module of the preceding aspect, each of the plurality of light blocking elements is a wedge-shaped projection, and the following condition is satisfied with θe' for the included angle of the wedge-shaped projection: 0° < θe' < 90°.

[0009] In the optical path folding module of the preceding aspect, each of the plurality of light blocking elements forms a convex arc, and the following condition is satisfied with Re for the radius of curvature of the convex arc: 0 mm < Re < 0.3 mm.

[0010] In the optical path folding module of the preceding aspect, each of the plurality of light blocking elements forms a concave arc, and with Re' for the radius of curvature of the concave arc, the following condition is satisfied: 0 mm < Re' < 0.3 mm.

[0011] In the optical path folding module of the preceding aspect, the open ring structure further comprises at least one auxiliary arc, at least a part of the plurality of light blocking elements is arranged on the at least one auxiliary arc, and the following condition is met with r for the radius of curvature of the auxiliary arc: 0.5 mm < r < 50 mm.

[0012] In the optical path folding module of the preceding aspect, the following condition is satisfied with He for the height of each of the plurality of light blocking elements extending in a direction perpendicular to the outgoing optical axis: 0.01 mm < He < 1.2 mm.

[0013] In the optical path folding module of the preceding aspect, Le for the length extending in a direction parallel to the outgoing optical axis of each of the plurality of light blocking elements satisfies the following condition: 0.01 mm < Le < 2.8 mm.

[0014] In the optical path folding module of the preceding aspect, the optical path folding element is made of plastic.

[0015] In the optical path folding module of the previous aspect, the opaque body is made of black plastic.

[0016] In another aspect of the present disclosure, a camera module includes the optical path folding module of the preceding aspect and an imaging lens assembly. The imaging lens assembly is disposed adjacent to the optical path folding module.

[0017] In another aspect of the present disclosure, an electronic device includes the camera module of the preceding aspect and an image sensor. The image sensor is arranged in the image area of ​​the camera module.

[0018] In another aspect of the present disclosure, an optical path folding module includes an optical path folding element and an opaque body. The optical path folding element is for folding an incident optical axis into an exiting optical axis, and the optical path folding element has a light incident surface and a light exiting surface. The incident optical axis passes through and enters the light incident surface. The exiting optical axis passes through and exits the light exiting surface. The opaque body is arranged correspondingly to the optical path folding element, and the opaque body has an open ring structure and a plurality of light blocking elements. The incident optical axis passes through a notch opening of the open ring structure.The plurality of light-blocking elements protrude from the open ring structure in a direction perpendicular to the incident optical axis, and are arranged adjacent to the light entrance surface of the optical path folding element. When the incident optical axis is considered as the center of a circle, θi represents an angle occupied by the plurality of light-blocking elements and Ni represents the number of the plurality of light-blocking elements, satisfying the following conditions: 10° < θi < 350° and 15 < Ni < 460.

[0019] In the optical path folding module of the preceding aspect, each of the plurality of light blocking elements projects toward the incident optical axis and progressively shrinks and overlaps.

[0020] In the optical path folding module of the preceding aspect, the opaque body and the plurality of light blocking elements are integrally formed.

[0021] In the optical path folding module of the foregoing aspect, when the incident optical axis is regarded as the center of a circle, with θi being an angle occupied by the plurality of light blocking elements and Ni being the number of the plurality of light blocking elements, the following conditions are satisfied: 10° < θi < 150° and 15 < Ni < 250.

[0022] In the optical path folding module of the foregoing aspect, when the incident optical axis is regarded as the center of a circle, with θi being an angle occupied by the plurality of light blocking elements and Ni being the number of the plurality of light blocking elements, the following conditions are satisfied: 110° < θi < 350° and 50 < Ni < 300.

[0023] In the optical path folding module of the preceding aspect, each of the plurality of light blocking elements is a wedge-shaped protrusion, and the following condition is satisfied with θi' for the included angle of the wedge-shaped protrusion: 0° < θi' < 90°.

[0024] In the optical path folding module of the preceding aspect, each of the plurality of light blocking elements forms a convex arc, and with Ri for the radius of curvature of the convex arc, the following condition is satisfied: 0 mm < Ri < 0.3 mm.

[0025] In the optical path folding module of the preceding aspect, each of the plurality of light blocking elements forms a concave arc, and with Ri' for the radius of curvature of the concave arc, the following condition is satisfied: 0 mm < Ri' < 0.3 mm.

[0026] In the optical path folding module of the preceding aspect, the open ring structure further comprises at least one auxiliary arc, at least a part of the plurality of light blocking elements is arranged on the at least one auxiliary arc, and the following condition is met with r for the radius of curvature of the at least one auxiliary arc: 0.5 mm < r < 50 mm.

[0027] In the optical path folding module of the preceding aspect, Hi for the height extending in a direction perpendicular to the incident optical axis of each of the plurality of light blocking elements satisfies the following condition: 0.01 mm < Hi < 1.2 mm.

[0028] In the optical path folding module of the preceding aspect, Li for the length extending in a direction parallel to the incident optical axis of each of the plurality of light blocking elements satisfies the following condition: 0.01 mm < Li < 2.8 mm.

[0029] In the optical path folding module of the preceding aspect, the optical path folding element is made of plastic.

[0030] In the optical path folding module of the previous aspect, the opaque body is made of black plastic. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be better understood upon reading the following detailed description of the embodiment with reference to the following accompanying drawings: Fig. 1A is a three-dimensional schematic view of a camera module of the first example of the first embodiment of the present disclosure. Fig. 1B is an exploded view of the camera module of the 1st example of the 1st embodiment of the Fig. 1A. Fig. 1C is a partial sectional view of the camera module of the 1st example of the 1st embodiment of the Fig. 1A. Fig. 1D is a top view of the camera module of the 1st example of the 1st embodiment of the Fig. 1A. Fig. 1E is a cross-sectional view taken along line 1E-1E in Fig. 1D. Fig. Figure 1F is a plan view of the opaque body of the 1st example of the 1st embodiment of the Fig. 1A. Fig. Figure 1G is a plan view of the opaque body of the 2nd example of the 1st embodiment of the Fig. 1A. Fig. 2A is a three-dimensional view of a camera module of the 1st example of the 2nd embodiment of the present disclosure. Fig. 2B is an exploded view of the camera module of the 1st example of the 2nd embodiment of the Fig. 2A. Fig. 2C is a top view of the camera module of the 1st example of the 2nd embodiment of the Fig. 2A. Fig. 2D is a cross-sectional view along the line 2D-2D in Fig. 2C. Fig. Figure 2E is a plan view of the opaque body of the 1st example of the 2nd embodiment of the Fig. 2A. Fig. Figure 2F is a plan view of the opaque body of the 2nd example of the 2nd embodiment of the Fig. 2A. Fig. 3A is a schematic view of an optical path folding module in Example 1 of Embodiment 3 of the present disclosure. Fig. 3B is an exploded view of the optical path folding module of the 1st example of the 3rd embodiment of the Fig. 3A. Fig. 3C is a plan view of the optical path folding module of the 1st example of the 3rd embodiment of the Fig. 3A. Fig. 3D is a schematic view of the opaque body of the 1st example of the 3rd embodiment of the Fig. 3A. Fig. 3E is another top view of the optical path folding module of the 1st example of the 3rd embodiment of the Fig. 3A. Fig. 3F is a cross-sectional view taken along line 3F-3F in Fig. 3E. Fig. 4A is a schematic view of the optical path folding module in Example 1 of Embodiment 4 of the present disclosure. Fig. 4B is an exploded view of the optical path folding module of the 1st example of the 4th embodiment of the Fig. 4A. Fig. 4C is a plan view of the optical path folding module of the 1st example of the 4th embodiment of the Fig. 4A. Fig. Figure 4D is a schematic view of the opaque body of the 1st example of the 4th embodiment of the Fig. 4A. Fig. Fig. 4E is another plan view of the optical path folding module of the 1st example of the 4th embodiment of the Fig. 4A. Fig. Figure 4F is a cross-sectional view taken along line 4F-4F in Fig. 4E. Fig. 5A is a schematic view of the optical path folding module in Example 1 of Embodiment 5 of the present disclosure. Fig. 5B is an exploded view of the optical path folding module of the 1st example of the 5th embodiment of the Fig. 5A. Fig. 5C is a plan view of the optical path folding module of the 1st example of the 5th embodiment of the Fig. 5A. Fig. Figure 5D is a schematic view of the opaque body of the 1st example of the 5th embodiment of the Fig. 5A. Fig. 5E is another plan view of the optical path folding module of the 1st example of the 5th embodiment of the Fig. 5A. Fig. 5F is a cross-sectional view taken along line 5F-5F in Fig. 5E. Fig. 6A is a schematic view of the optical path folding module in the 1st example of the 6th embodiment of the present disclosure. Fig. 6B is an exploded view of the optical path folding module of the 1st example of the 6th embodiment of the Fig. 6A. Fig. 6C is a plan view of the optical path folding module of the 1st example of the 6th embodiment of the Fig. 6A. Fig. Figure 6D is a schematic view of the opaque body of the 1st example of the 6th embodiment of the Fig. 6A. Fig. Fig. 6E is another plan view of the optical path folding module of the 1st example of the 6th embodiment of the Fig. 6A. Fig. Figure 6F is a cross-sectional view taken along line 6F-6F in Fig. 6E. Fig. 7A is a schematic view of the optical path folding module in Example 1 of Embodiment 7 of the present disclosure. Fig. Fig. 7B is an exploded view of the optical path folding module of the 1st example of the 7th embodiment of the Fig. 7A. Fig. Fig. 7C is a plan view of the optical path folding module of the 1st example of the 7th embodiment of the Fig. 7A. Fig. Figure 7D is a schematic view of the opaque body of the 1st example of the 7th embodiment of the Fig. 7A. Fig. Fig. 7E is another plan view of the optical path folding module of the 1st example of the 7th embodiment of the Fig. 7A. Fig. Figure 7F is a cross-sectional view taken along line 7F-7F in Fig. 7E. Fig. 8A is a schematic view of the optical path folding module in Example 1 of Embodiment 7 of the present disclosure. Fig. Fig. 8B is an exploded view of the optical path folding module of the 1st example of the 8th embodiment of the Fig. 8A. Fig. Fig. 8C is a plan view of the optical path folding module of the 1st example of the 8th embodiment of the Fig. 8A. Fig. Fig. 8D is a schematic view of the opaque body 820 of the 1st example of the 8th embodiment of the Fig. 8A. Fig. Fig. 8E is another plan view of the optical path folding module 800 of the 1st example of the 8th embodiment of the Fig. 8A. Fig. Figure 8F is a cross-sectional view taken along line 8F-8F in Fig. 8E. Fig. 9A is a schematic view of the electronic device 90 in the 9th embodiment of the present disclosure. Fig. Fig. 9B is another schematic view of the electronic device 90 in the 9th embodiment in Fig. 9A. Fig. Fig. 9C is a schematic view of a circuit used by the electronic device 90 in the 9th embodiment in Fig. 9A captured image. Fig. Fig. 9D is a schematic view of a circuit used by the electronic device 90 in the 9th embodiment in Fig. 9A captured image. Fig. Fig. 9E is another schematic view of a circuit used by the electronic device 90 in the 9th embodiment in Fig. 9A captured image. Fig. 10 is a schematic view of an electronic device in the 10th embodiment of the present disclosure. Fig. 11A shows a schematic view of a vehicle device in the 11th embodiment of the present disclosure. Fig. 11B shows another schematic view of the vehicle device in the 11th embodiment in Fig. 11A. Fig. 11C shows another schematic view of the vehicle device in the 11th embodiment in Fig. 11A. DETAILED DESCRIPTION

[0032] The present disclosure provides an optical path folding module comprising an optical path folding element and an opaque body, the opaque body being arranged correspondingly to the optical path folding element. The optical path folding element serves to fold an incident optical axis into an exit optical axis, and the optical path folding element has a light incident surface and a light exit surface. The incident optical axis traverses and enters the light incident surface. The exit optical axis traverses and exits the light exit surface. The opaque body has an open ring structure and a plurality of light blocking elements. The exit optical axis traverses a notch opening of the open ring structure.The light-blocking elements protrude from the open ring structure in a direction perpendicular to the exit optical axis toward the exit optical axis, with the light-blocking elements arranged adjacent to the light-exit surface of the optical path folding element. When the exit optical axis is considered the center of a circle, the angle occupied by the light-blocking elements is θe, and the number of light-blocking elements is Ne, satisfying the following conditions: 10° < θe < 350° and 15 < Ne < 460. Thus, non-image-forming light outside the field of view can be blocked by arranging the light-blocking elements in the direction of the exit optical axis to obtain a clear image.

[0033] Specifically, the light path folding element may be a prism, a mirror, etc. Each of the light blocking elements may be wedge-shaped, straight-strip-shaped, sheet-shaped, semi-cylindrical, or wave-shaped, etc. Furthermore, if the direction parallel to the outgoing optical axis is the Z-axis, then the direction perpendicular to the outgoing optical axis is any direction in an XY plane defined by an X-axis and a Y-axis.

[0034] Furthermore, the open ring structure may be an appearance feature of the opaque body, such as C-shaped, U-shaped, straight, etc., but the present disclosure is not limited thereto. The light blocking elements may be arranged on the open ring structure substantially in a peripheral direction surrounding the outgoing optical axis.

[0035] Each of the light-blocking elements can extend toward the exiting optical axis and progressively shrink and overlap. This can enhance the light-blocking effect of the light-blocking elements.

[0036] The opaque body and the light-blocking elements can be formed integrally. This eliminates the need for assembly of the opaque body and the light-blocking elements, thus accelerating the manufacturing process.

[0037] When the outgoing optical axis is considered as the center of a circle, where θe represents the angle occupied by the light-blocking elements and Ne represents the number of light-blocking elements, the following conditions are met: 10° < θe < 150° and 15 < Ne < 250. This allows the optical path of reflected, non-image-forming light to be disrupted at certain points on the surface of the opaque body, preventing the non-image-forming light from entering the imaging lens array, thereby improving image quality. In particular, the light-blocking elements can be arranged along the straight portion of the open ring structure.

[0038] When the outgoing optical axis is considered as the center of a circle, where θe is an angle occupied by the plurality of light-blocking elements and Ne is the number of the plurality of light-blocking elements, the following conditions are satisfied: 110° < θe < 350° and 50 < Ne < 300. This can meet the light-blocking requirements of various optical designs by improving the scope for optical design. In particular, the light-blocking elements can be arranged on the open ring structure along the U-shaped region.

[0039] Each of the light-blocking elements is a wedge-shaped protrusion. With θe' being the included angle of the wedge-shaped protrusion, the following condition is met: 0° < θe' < 90°. Thus, the beam path of reflected, non-image-forming light can be disrupted by shaping the wedge-shaped protrusion in such a way that the light-blocking effect is improved. In particular, the opaque body can be a holder or support produced by a plastic injection molding process, which is given the wedge-shaped or semi-cylindrical shape of each of the light-blocking elements by the mold. The opaque body can also be a light-blocking sheet that is punched into the wedge or sheet shape of each of the light-blocking elements by the stamping process, but the present disclosure is not limited thereto.

[0040] Each of the light-blocking elements forms a convex arc. Re is the radius of curvature of the convex arc, satisfying the following condition: 0 mm < Re < 0.3 mm. This is beneficial for disrupting the optical path of reflected, non-image-forming light, thus improving the light-blocking effect.

[0041] Each of the light-blocking elements forms a concave arc. With Re' as the radius of curvature of the concave arc, the following condition is met: 0 mm < Re' < 0.3 mm. This is beneficial for disrupting the optical path of reflected, non-image-forming light, thus improving the light-blocking effect.

[0042] The open ring structure may further include at least one auxiliary arc, and at least some of the light-blocking elements are arranged on the auxiliary arc. With r as the radius of curvature of the auxiliary arc, the following condition is met: 0.5 mm < r < 50 mm. This can eliminate stray light at a specific angle to make the image clear. Specifically, any light-blocking element (including wedge-shaped protrusions, convex arcs, concave arcs, or continuously arranged convex arcs and concave arcs) may also be arranged on the auxiliary arc.

[0043] With He representing the height of each of the light-blocking elements extending in a direction perpendicular to the exit optical axis, the following condition is satisfied: 0.01 mm < He < 1.2 mm. This achieves the height extension range with the best light-blocking effect.

[0044] With Le representing the length of each of the light-blocking elements extending in a direction parallel to the exit optical axis, the following condition is satisfied: 0.01 mm < Le < 2.8 mm. This achieves the length extension range with the best light-blocking effect.

[0045] In addition, the optical path folding element may be made of plastic and the opaque body may be made of black plastic, but the present disclosure is not limited thereto.

[0046] The present disclosure provides an optical path folding module comprising an optical path folding element and an opaque body, the opaque body being arranged correspondingly to the optical path folding element. The optical path folding element serves to fold an incident optical axis into an exit optical axis, and the optical path folding element has a light incident surface and a light exit surface. The incident optical axis traverses and enters the light incident surface. The exit optical axis traverses and exits the light exit surface. The opaque body has an open ring structure and a plurality of light blocking elements. The incident optical axis traverses a notch opening of the open ring structure.The light-blocking elements protrude from the open ring structure in a direction perpendicular to the incident optical axis toward the incident optical axis, with the light-blocking elements arranged adjacent to the light incidence surface of the optical path folding element. When the incident optical axis is considered the center of a circle, θi represents the angle occupied by the light-blocking elements and Ni represents the number of light-blocking elements, satisfying the following conditions: 10° < θi < 350° and 15 < Ni < 460. Thus, non-image-forming light outside the field of view can be blocked by arranging the light-blocking elements in the direction of the incident optical axis to obtain a clear image.

[0047] Each of the light-blocking elements can extend toward the incident optical axis and progressively shrink and overlap. This can enhance the light-blocking effect of the light-blocking elements.

[0048] The opaque body and the light-blocking elements can be formed integrally. This eliminates the need for assembly of the opaque body and the light-blocking elements, thus accelerating the manufacturing process.

[0049] If the incident optical axis is considered as the center of a circle, where θi represents the angle occupied by the light-blocking elements and Ni represents the number of light-blocking elements, the following conditions are met: 10° < θi < 150° and 15 < Ni < 250. This allows the optical path of reflected, non-image-forming light to be disrupted at certain points on the surface of the opaque body, preventing non-image-forming light from entering the imaging lens array, thereby improving image quality. In particular, the light-blocking elements can be arranged along the straight portion of the open ring structure.

[0050] When the incident optical axis is considered as the center of a circle, where θi is the angle occupied by the light-blocking elements and Ni is the number of light-blocking elements, the following conditions are satisfied: 110° < θi < 350° and 50 < Ni < 300. This can meet the light-blocking requirements of various optical designs by improving the optical design flexibility. In particular, the light-blocking elements can be arranged along the U-shaped region of the open ring structure.

[0051] Each of the light-blocking elements is a wedge-shaped projection. With θi' representing the included angle of the wedge-shaped projection, the following condition is met: 0° < θi' < 90°. Thus, the beam path of reflected, non-image-forming light can be distorted by the shape of the wedge-shaped projection to improve the light-blocking effect.

[0052] Each of the light-blocking elements forms a convex arc. With Ri as the radius of curvature of the convex arc, the following condition is met: 0 mm < Ri < 0.3 mm. This is beneficial for disrupting the optical path of reflected, non-image-forming light, thus improving the light-blocking effect.

[0053] Each of the light-blocking elements forms a concave arc. With Ri' as the radius of curvature of the concave arc, the following condition is met: 0 mm < Ri' < 0.3 mm. This is beneficial for disrupting the optical path of reflected, non-image-forming light, thus improving the light-blocking effect.

[0054] The open ring structure may further include at least one auxiliary arc, and at least some of the light-blocking elements are arranged on the at least one auxiliary arc. With r being the radius of curvature of the auxiliary arc, the following condition is met: 0.5 mm < r < 50 mm. This can eliminate stray light at a specific angle to make the image clear. Specifically, any light-blocking element (including wedge-shaped protrusions, convex arcs, concave arcs, or continuously arranged convex arcs and concave arcs) may also be arranged on the auxiliary arc.

[0055] With Hi as the height of each of the light-blocking elements extending in a direction perpendicular to the incident optical axis, the following condition is satisfied: 0.01 mm < Hi < 1.2 mm. This achieves the height extension range with the best light-blocking effect.

[0056] With Li representing the length of each of the light-blocking elements extending in a direction parallel to the incident optical axis, the following condition is satisfied: 0.01 mm < Li < 2.8 mm. This achieves the length extension range with the best light-blocking effect.

[0057] In addition, the optical path folding element may be made of plastic and the opaque body may be made of black plastic, but the present disclosure is not limited thereto.

[0058] It should be noted that the light-blocking elements in the opaque body of the optical path folding module of the present disclosure are not limited to being disposed adjacent to only either the light incident surface or the light exit surface of the optical path folding module. The light-blocking elements may also be disposed adjacent to both the light incident surface and the light exit surface of the optical path folding module at the same time.

[0059] The present disclosure provides a camera module comprising the optical path folding module described in any of the preceding aspects and an imaging lens assembly, wherein the imaging lens assembly is disposed subsequent to the optical path folding module.

[0060] The present disclosure provides an electronic device comprising the camera module described in any of the preceding aspects and an image sensor, wherein the image sensor is arranged in the image area of ​​the camera module. <1. Embodiment>

[0061] Fig. 1A is a three-dimensional schematic view of a camera module 10 of the 1st example of the 1st embodiment of the present disclosure. Fig. 1B is an exploded view of the camera module 10 of the 1st example of the 1st embodiment of the Fig. 1A. Fig. Fig. 1C is a partial sectional view of the camera module 10 of the 1st example of the 1st embodiment of the Fig. 1A. In Fig. 1A, Fig. 1B and Fig. 1C, the camera module 10 comprises a light path folding module 100 and an imaging lens assembly 11, wherein the imaging lens assembly 11 is arranged adjacent to the light path folding module 100. The light path folding module 100 is arranged on the image side of the imaging lens assembly 11 via a mounting element 12. In particular, the light path folding module 100 comprises a light path folding element 110 and an opaque body 120, wherein the imaging lens assembly 11 has a lens barrel part 11a for receiving at least one lens element (not shown in the drawings), which is not an essential technical feature of the present disclosure and will not be described here.

[0062] Fig. Fig. 1D is a plan view of the camera module 10 of the 1st example of the 1st embodiment of the Fig. 1A. Fig. 1E is a cross-sectional view taken along line 1E-1E in Fig. 1D. In Fig. 1A to Fig. 1E, the optical path folding element 110 of the optical path folding module 100 is arranged corresponding to the opaque body 120. The optical path folding element 110 serves to fold an incident optical axis Oi into an outgoing optical axis Oe and has a light incident surface 111 and a light exit surface 112. The incident optical axis Oi passes through the light incident surface 111 and enters it. The exit optical axis Oe passes through the light exit surface 112 and departs from it. Specifically, the direction parallel to the exit optical axis Oe is the Z-axis. The direction perpendicular to the exit optical axis Oe is any direction in an XY plane defined by the X-axis and the Y-axis. In the first example of the first embodiment, the optical path folding element 110 is a prism.

[0063] The opaque body 120 has an open structure (the reference numeral of which has been omitted) and a plurality of light-blocking elements 122. The incident optical axis Oi passes through a notch opening 121 of the open ring structure. The light-blocking elements 122 protrude from the open ring structure in a direction perpendicular to the incident optical axis Oi toward the incident optical axis Oi, wherein the light-blocking elements 122 are arranged adjacent to the light incidence surface 111 of the optical path folding element 110. In particular, the light-blocking elements 122 are arranged on the open ring structure substantially in a circumferential direction surrounding the incident optical axis Oi. Furthermore, the opaque body 120 and the light-blocking elements 122 are integrally formed.

[0064] Fig. Fig. 1F is a plan view of the opaque body 120 of the 1st example of the 1st embodiment of the Fig. 1A. In Fig. 1C and Fig. 1F, each of the light-blocking elements 122 protrudes toward the incident optical axis Oi and progressively shrinks and overlaps. Each of the light-blocking elements 122 is a wedge-shaped protrusion. The open ring structure may further include two auxiliary arcs 123, and a portion of the light-blocking elements 122 is arranged on the auxiliary arcs 123.

[0065] Furthermore, in the first example of the first embodiment, the optical path folding element 110 is made of plastic. The opaque body 120 is made of black plastic.

[0066] In Fig. 1E and Fig. 1F, in the 1st example of the 1st embodiment, when the incident optical axis Oi is regarded as the center of a circle, where θi is an angle occupied by the light blocking elements 122, Ni is the number of the light blocking elements 122, θi' is the included angle of the wedge-shaped projection, r is the radius of curvature of the auxiliary arc 123, Hi is the height of each of the light blocking elements 122 extending in a direction perpendicular to the incident optical axis Oi, and Li is the length of each of the light blocking elements 122 extending in a direction parallel to the incident optical axis Oi, the following conditions shown in Table 1A are satisfied. Tabelle 1A - 1. Beispiel der 1. Ausführungsform θi (°) 318,6 r (mm) 1,50 Ni 141 Hi (mm) 0,25 θi' (°) 30 Li (mm) 0,02

[0067] Fig. Figure 1G is a plan view of the opaque body 120 of the 2nd example of the 1st embodiment of the Fig. 1A. It should be noted that the difference between the second example of the first embodiment of the present disclosure and the first example thereof is only in the shape of the opaque body 120, and the other components, positions, and connection relationships are the same or similar and will not be described here. Fig. 1C and Fig. 1G, in the second example of the first embodiment, each of the light-blocking elements 122 protrudes toward the incident optical axis Oi and gradually shrinks and intersects with each other. Each of the light-blocking elements 122 is sheet-shaped. Each of the light-blocking elements 122 forms a concave arc (the reference numeral of which is omitted). The open ring structure may further include two auxiliary arcs 123, and a portion of the light-blocking elements 122 is arranged on the auxiliary arcs 123.

[0068] In Fig. 1E and Fig. 1G, in the 2nd example of the 1st embodiment, when the incident optical axis Oi is regarded as the center of a circle, where θi is an angle occupied by the light blocking elements 122, Ni is the number of the light blocking elements 122, Ri' is the radius of curvature of the concave arc, r is the radius of curvature of the auxiliary arc 123, Hi is the height of each of the light blocking elements 122 extending in a direction perpendicular to the incident optical axis Oi, and Li is the length of each of the light blocking elements 122 extending in a direction parallel to the incident optical axis Oi, the following conditions shown in Table 1B are satisfied. Tabelle 1B - 2. Beispiel der 1. Ausführungsform θi (°) 315,3 r (mm) 1,50 Ni 65 Hi (mm) 0,15 Ri' (mm) 0,15 Li (mm) 0,02 <2nd embodiment>

[0069] Fig. 2A is a three-dimensional schematic view of a camera module 20 of the 1st example of the 2nd embodiment of the present disclosure. Fig. 2B is an exploded view of the camera module 20 of the 1st example of the 2nd embodiment of the Fig. 2A. In Fig. 2A and Fig. 2B, the camera module 20 comprises a light path folding module 200 and an imaging lens assembly 21, wherein the imaging lens assembly 21 is arranged adjacent to the light path folding module 200. The light path folding module 200 is arranged on the image side of the imaging lens assembly 21 via a mounting element 22. In particular, the light path folding module 200 comprises a light path folding element 210 and an opaque body 220, wherein the imaging lens assembly 21 has a lens barrel part 21a for receiving at least one lens element (not shown in the drawings), which is not an essential technical feature of the present disclosure and will not be described here.

[0070] Fig. 2C is a top view of the camera module 20 of the 1st example of the 2nd embodiment of the Fig. 2A. Fig. 2D is a cross-sectional view along the line 2D-2D in Fig. 2C. In Fig. 2A to Fig. 2D, the optical path folding element 210 of the optical path folding module 200 is arranged corresponding to the opaque body 220. The optical path folding element 210 serves to fold an incident optical axis Oi into an exit optical axis Oe and has a light incident surface 211 and a light exit surface 212. The incident optical axis Oi traverses the light incident surface 211 and enters it. The exit optical axis Oe traverses the light exit surface 212 and departs from it. Specifically, in the first example of the second embodiment of the present disclosure, the optical path folding element 210 is a prism, and both the light incident surface 211 and the light exit surface 212 are located on the same surface of the optical path folding element 210.

[0071] The opaque body 220 has two open structures (the reference numerals of which have been omitted) and a plurality of light-blocking elements 2221, 2222. The incident optical axis Oi passes through a notch opening 2211 of the open ring structure. The light-blocking elements 2221 protrude from the open ring structure in a direction perpendicular to the incident optical axis Oi toward the incident optical axis Oi, wherein the light-blocking elements 2221 are arranged adjacent to the light incidence surface 211 of the optical path folding element 210. The exiting optical axis Oe passes through a notch opening 2212 of the open ring structure. The light-blocking elements 2222 protrude from the open ring structure in a direction perpendicular to the exiting optical axis Oe toward the exiting optical axis Oe, wherein the light-blocking elements 2222 are arranged adjacent to the light incidence surface 212 of the optical path folding element 210.In addition, the opaque body 220 and the light blocking elements 2221, 2222 are formed in one piece.

[0072] Fig. Figure 2E is a plan view of the opaque body 220 of the 1st example of the 2nd embodiment of the Fig. 2A. In Fig. 2E, each of the light-blocking elements 2221 protrudes toward the incident optical axis Oi and progressively shrinks and intersects. Each of the light-blocking elements 2221 is a wedge-shaped protrusion. Each of the light-blocking elements 2222 protrudes toward the exiting optical axis Oe and progressively shrinks and intersects. Each of the light-blocking elements 2222 is a wedge-shaped protrusion.

[0073] Furthermore, in the first example of the second embodiment, the optical path folding element 210 is made of plastic. The opaque body 220 is made of black plastic.

[0074] In Fig. 2D and Fig. 2E, in the 1st example of the 2nd embodiment, when the incident optical axis Oi is considered as the center of a circle, where θi is an angle occupied by the light blocking elements 2221, and Ni is the number of the light blocking elements 2221, where θi' is the included angle of the wedge-shaped projection of the light blocking elements 2221, where Hi is the height of each of the light blocking elements 2221 extending in a direction perpendicular to the incident optical axis Oi, and where Li is the length of each of the light blocking elements 2221 extending in a direction parallel to the incident optical axis Oi, and when the exiting optical axis Oe is considered as the center of a circle, where θe is an angle occupied by the light blocking elements 2222, and Ne is the number of the light blocking elements 2222, where θe' is the included angle of the wedge-shaped projection of the light blocking elements 2222,where He is the height of each of the light blocking elements 2222 extending in a direction perpendicular to the outgoing optical axis Oe and Le is the length of each of the light blocking elements 2222 extending in a direction parallel to the incident optical axis Oe, satisfies the following conditions shown in Table 2A. Tabelle 2A - 1. Beispiel der 2. Ausführungsform θi (°) 268,6 θe (°) 107,7 Ni 74 Ne 26 θi' (°) 59,5 θe' (°) 60 Hi (mm) 0,18 He (mm) 0,17 Li (mm) 0,02 Le (mm) 0,02

[0075] Fig. Figure 2F is a plan view of the opaque body 220 of the 2nd example of the 2nd embodiment of the Fig. 2A. It should be noted that the difference between the second example of the second embodiment of the present disclosure and the first example thereof is only in the shape of the opaque body 220, and the other components, positions, and connection relationships are the same or similar and will not be described here. Fig. 2F, in the second example of the second embodiment, each of the light-blocking elements 2221 is sheet-shaped and forms a convex arc (the reference numeral of which is omitted). The open ring structure may further include two auxiliary arcs 2231, and a portion of the light-blocking elements 2221 is disposed on the auxiliary arcs 2231. Each of the light-blocking elements 2222 is sheet-shaped and forms a concave arc (the reference numeral of which is omitted).

[0076] In Fig. 2D and Fig. 2F, in the 2nd example of the 2nd embodiment, when the incident optical axis Oi is considered as the center of a circle, where θi is an angle occupied by the light blocking elements 2221, and Ni is the number of the light blocking elements 2221, where Ri is the radius of curvature of the convex arc, where r is the radius of curvature of the auxiliary arc 2231, where Hi is the height of each of the light blocking elements 2221 extending in a direction perpendicular to the incident optical axis Oi, where Li is the length of each of the light blocking elements 2221 extending in a direction parallel to the incident optical axis Oi, and when the exiting optical axis Oe is considered as the center of a circle, where θe is an angle occupied by the light blocking elements 2222, and Ne is the number of the light blocking elements 2222, where Re' is the radius of curvature of the concave arch,where He is the height of each of the light blocking elements 2222 extending in a direction perpendicular to the outgoing optical axis Oe and Le is the length of each of the light blocking elements 2222 extending in a direction parallel to the incident optical axis Oe, satisfies the following conditions shown in Table 2B. Tabelle 2B - 2. Beispiel der 2. Ausführungsform θi (°) 268,2 θe (°) 104,9 Ni 66 Ne 27 Ri (mm) 0,10 Re' (mm) 0,10 r (mm) 1,61 He (mm) 0,07 Hi (mm) 0,10 Le (mm) 0,02 Li (mm) 0,02 <3rd embodiment>

[0077] Fig. 3A is a schematic view of a beam path folding module 300 of the 1st example of the 3rd embodiment of the present disclosure. Fig. 3B is an exploded view of the optical path folding module 300 of the 1st example of the 3rd embodiment of the Fig. 3A. Fig. 3C is a plan view of the optical path folding module 300 of the 1st example of the 3rd embodiment of the Fig. 3A. In Fig. 3A, Fig. 3B and Fig.3C, the optical path folding module 300 comprises an optical path folding element 310 and an opaque body 320, wherein the opaque body 320 is arranged correspondingly to the optical path folding element 310. Furthermore, the optical path folding module 300 may further comprise a cover 301 and a mounting support 302, wherein the opaque body 320 and the optical path folding element 310 are arranged on the mounting support 302. The cover 301 covers the mounting support 302, which is favorable for the arrangement of the entire optical path folding module 300 in the camera module or other device.

[0078] Fig. 3D is a schematic view of the opaque body 320 of the 1st example of the 3rd embodiment of the Fig. 3A. Fig. 3E is another top view of the optical path folding module 300 of the 1st example of the 3rd embodiment of the Fig. 3A. Fig. 3F is a cross-sectional view taken along line 3F-3F in Fig. 3E. In Fig.3D to Fig. 3F, the optical path folding element 310 serves to fold an incident optical axis Oi into an outgoing optical axis Oe and has a light incident surface 311 and a light exit surface 312. The incident optical axis Oi traverses the light incident surface 311 and enters it. The exit optical axis Oe traverses the light exit surface 312 and departs from it. In the first example of the third embodiment, the optical path folding element 310 is a prism.

[0079] The opaque body 320 has an open structure (the reference numeral of which has been omitted) and a plurality of light-blocking elements 322. The outgoing optical axis Oe passes through a notch opening 321 of the open ring structure. The light-blocking elements 322 protrude from the open ring structure in a direction perpendicular to the outgoing optical axis Oe toward the outgoing optical axis Oe, wherein the light-blocking elements 322 are arranged adjacent to the light exit surface 312 of the optical path folding element 310. Furthermore, the opaque body 320 and the light-blocking elements 322 are integrally formed.

[0080] Each of the light-blocking elements 322 protrudes toward the exit optical axis Oe and progressively shrinks and overlaps. Each of the light-blocking elements 322 is a wedge-shaped projection.

[0081] Furthermore, in the first example of the third embodiment, the optical path folding element 310 is made of plastic. The opaque body 320 is made of black plastic.

[0082] In Fig. 3E and Fig. 3F, in the 1st example of the 3rd embodiment, when the outgoing optical axis Oe is regarded as the center of a circle, where θe is an angle occupied by the light blocking elements 322, Ne is the number of the light blocking elements 322, θe' is the included angle of the wedge-shaped projection, He is the height of each of the light blocking elements 322 extending in a direction perpendicular to the outgoing optical axis Oe, and Le is the length of each of the light blocking elements 322 extending in a direction parallel to the outgoing optical axis Oe, the following conditions shown in Table 3A are satisfied. Table 3A - 1. Example of the 3rd embodiment θe (°) 129,5 He (mm) 0,09 No 106 Le (mm) 0,85 θe' (°) 60 <4th Embodiment>

[0083] Fig.4A is a schematic view of a beam path folding module 400 of the 1st example of the 4th embodiment of the present disclosure. Fig. 4B is an exploded view of the optical path folding module 400 of the 1st example of the 4th embodiment of the Fig. 4A. Fig. 4C is a plan view of the optical path folding module 400 of the 1st example of the 4th embodiment of the Fig. 4A. In Fig. 4A, Fig. 4B and Fig.4C, the optical path folding module 400 comprises an optical path folding element 410 and an opaque body 420, wherein the opaque body 420 is arranged correspondingly to the optical path folding element 410. Furthermore, the optical path folding module 400 may further comprise a cover 401 and a mounting support 402, wherein the opaque body 420 and the optical path folding element 410 are arranged on the mounting support 402. The cover 401 covers the mounting support 402, which is favorable for the arrangement of the entire optical path folding module 400 in the camera module or other devices.

[0084] Fig. Figure 4D is a schematic view of the opaque body 420 of the 1st example of the 4th embodiment of the Fig. 4A. Fig. Fig. 4E is another top view of the optical path folding module 400 of the 1st example of the 4th embodiment of the Fig. 4A. Fig. Figure 4F is a cross-sectional view taken along line 4F-4F in Fig. 4E. In Fig.4D to Fig. 4F, the optical path folding element 410 serves to fold an incident optical axis Oi into an outgoing optical axis Oe and has a light incident surface 411 and a light exit surface 412. The incident optical axis Oi traverses the light incident surface 411 and enters it. The exit optical axis Oe traverses the light exit surface 412 and departs from it. In the first example of the fourth embodiment, the optical path folding element 410 is a prism.

[0085] The opaque body 420 has an open ring structure (the reference numeral of which has been omitted) and a plurality of light-blocking elements 422. The outgoing optical axis Oe passes through a notch opening 421 of the open ring structure. The light-blocking elements 422 protrude from the open ring structure in a direction perpendicular to the outgoing optical axis Oe toward the outgoing optical axis Oe, wherein the light-blocking elements 422 are arranged adjacent to the light exit surface 412 of the optical path folding element 410. Furthermore, the opaque body 420 and the light-blocking elements 422 are integrally formed.

[0086] Each of the light-blocking elements 422 protrudes toward the exit optical axis Oe and progressively shrinks and overlaps. Each of the light-blocking elements 422 is a wedge-shaped protrusion. Specifically, the light-blocking elements 422 are arranged on the open ring structure substantially in a circumferential direction surrounding the exit optical axis Oe. Furthermore, the light-blocking elements 422 are generally arranged in a U-shaped distribution with the exit axis Oe as the center. In the U-shaped distribution, the shape and size of the light-blocking elements 422 located at the bottom of the U-shape are slightly different from those of the light-blocking elements 422 located on both sides of the U-shape (the differences are indicated below in Table 4A).

[0087] Furthermore, in the first example of the fourth embodiment, the optical path folding element 410 is made of plastic. The opaque body 420 is made of black plastic.

[0088] In Fig. 4E and Fig. 4F, in the 1st example of the 4th embodiment, when the outgoing optical axis Oe is considered as the center of a circle, where θe is an angle occupied by the light-blocking elements 422, Ne is the number of the light-blocking elements 422, θe' is the included angle of the wedge-shaped projection, He is the height of each of the light-blocking elements 422 extending in a direction perpendicular to the outgoing optical axis Oe, and Le is the length of each of the light-blocking elements 422 extending in a direction parallel to the outgoing optical axis Oe, the following conditions shown in Table 4A are satisfied. Note that in Table 4A, in the fields of θe' and He, the left value is the value of the light-blocking elements 422 located on both sides of the U-shape, and the right value is the value of the light-blocking elements 422 located at the bottom of the U-shape. Table 4A - 1. Example of the 4th embodiment θe (°) 219,8 He (mm) 0,12, 0,09 No 194 Le (mm) 0,87 θe' (°) 45, 60 <5th Embodiment>

[0089] Fig. 5A is a schematic view of a beam path folding module 500 of the 1st example of the 5th embodiment of the present disclosure. Fig. 5B is an exploded view of the optical path folding module 500 of the 1st example of the 5th embodiment of the Fig. 5A. Fig. 5C is a plan view of the optical path folding module 500 of the 1st example of the 5th embodiment of the Fig. 5A. In Fig. 5A, Fig. 5B and Fig.5C, the optical path folding module 500 comprises an optical path folding element 510 and an opaque body 520, wherein the opaque body 520 is arranged correspondingly to the optical path folding element 510. Furthermore, the optical path folding module 500 may further comprise a cover 501 and a mounting support 502, wherein the opaque body 520 and the optical path folding element 510 are arranged on the mounting support 502. The cover 501 covers the mounting support 502, which is favorable for the arrangement of the entire optical path folding module 500 in the camera module or other devices.

[0090] Fig. Fig. 5D is a schematic view of the opaque body 520 of the 1st example of the 5th embodiment of the Fig. 5A. Fig. 5E is another top view of the optical path folding module 500 of the 1st example of the 5th embodiment of the Fig. 5A. Fig. 5F is a cross-sectional view taken along line 5F-5F in Fig. 5E. In Fig.5D to Fig. 5F, the optical path folding element 510 serves to fold an incident optical axis Oi into an outgoing optical axis Oe and has a light incident surface 511 and a light exit surface 512. The incident optical axis Oi traverses the light incident surface 511 and enters it. The exit optical axis Oe traverses the light exit surface 512 and departs from it. In the first example of the fifth embodiment, the optical path folding element 510 is a prism.

[0091] The opaque body 520 has an open structure (the reference numeral of which has been omitted) and a plurality of light-blocking elements 522. The outgoing optical axis Oe passes through a notch opening 521 of the open ring structure. The light-blocking elements 522 protrude from the open ring structure in a direction perpendicular to the outgoing optical axis Oe toward the outgoing optical axis Oe, wherein the light-blocking elements 522 are arranged adjacent to the light exit surface 512 of the optical path folding element 510. Furthermore, the opaque body 520 and the light-blocking elements 522 are integrally formed.

[0092] The light-blocking elements 522 are wave-shaped. Specifically, a portion of the light-blocking elements 522 forms a convex arc (the reference symbol of which is omitted), and a portion of the light-blocking elements 522 forms a concave arc (the reference symbol of which is omitted). The convex arc and the concave arc are arranged alternately.

[0093] Furthermore, in the first example of the fifth embodiment, the optical path folding element 510 is made of plastic. The opaque body 520 is made of black plastic.

[0094] In Fig. 5E and Fig.5F, in the 1st example of the 5th embodiment, when the outgoing optical axis Oe is regarded as the center of a circle, where θe is an angle occupied by the light blocking elements 522, Ne is the number of the light blocking elements 522, Re is the radius of curvature of the convex arc, Re' is the radius of curvature of the concave arc, He is the height of each of the light blocking elements 522 extending in a direction perpendicular to the outgoing optical axis Oe, and Le is the length of each of the light blocking elements 522 extending in a direction parallel to the outgoing optical axis Oe, the following conditions shown in Table 5A are satisfied. Table 5A - 1. Example of the 5th embodiment θe (°) 134,2 He (mm) 0,30 No 105 Le (mm) 0,92 Re (mm) 0,05 Re' (mm) 0,05 <6th Embodiment>

[0095] Fig. 6A is a schematic view of a beam path folding module 600 of the 1st example of the 6th embodiment of the present disclosure. Fig.6B is an exploded view of the optical path folding module 600 of the 1st example of the 6th embodiment of the Fig. 6A. Fig. 6C is a plan view of the optical path folding module 600 of the 1st example of the 6th embodiment of the Fig. 6A. In Fig. 6A, Fig. 6B and Fig. 6C, the optical path folding module 600 comprises an optical path folding element 610 and an opaque body 620, wherein the opaque body 620 is arranged correspondingly to the optical path folding element 610. Furthermore, the optical path folding module 600 may further comprise a cover 601 and a mounting support 602, wherein the opaque body 620 and the optical path folding element 610 are arranged on the mounting support 602. The cover 601 covers the mounting support 602, which is favorable for the arrangement of the entire optical path folding module 600 in the camera module or other devices.

[0096] Fig.Fig. 6D is a schematic view of the opaque body 620 of the 1st example of the 6th embodiment of the Fig. 6A. Fig. Fig. 6E is another plan view of the optical path folding module 600 of the 1st example of the 6th embodiment of the Fig. 6A. Fig. Figure 6F is a cross-sectional view taken along line 6F-6F in Fig. 6E. In Fig. 6D to Fig. 6F, the optical path folding element 610 serves to fold an incident optical axis Oi into an outgoing optical axis Oe and has a light incident surface 611 and a light exit surface 612. The incident optical axis Oi passes through the light incident surface 611 and enters it. The exit optical axis Oe passes through the light exit surface 612 and departs from it. In the first example of the sixth embodiment, the optical path folding element 610 is a prism.

[0097] The opaque body 620 has an open structure (the reference numeral of which has been omitted) and a plurality of light-blocking elements 622. The outgoing optical axis Oe passes through a notch opening 621 of the open ring structure. The light-blocking elements 622 protrude from the open ring structure in a direction perpendicular to the outgoing optical axis Oe toward the outgoing optical axis Oe, wherein the light-blocking elements 622 are arranged adjacent to the light exit surface 612 of the optical path folding element 610. Furthermore, the opaque body 620 and the light-blocking elements 622 are integrally formed.

[0098] Each of the light-blocking elements 622 protrudes toward the exit optical axis Oe and progressively shrinks and overlaps. Each of the light-blocking elements 622 is a wedge-shaped protrusion. Specifically, the light-blocking elements 622 are arranged on the open ring structure substantially in a circumferential direction surrounding the exit optical axis Oe. Furthermore, the light-blocking elements 622 are generally arranged in a U-shaped distribution with the exit axis Oe as the center. In the U-shaped distribution, the shape and size of the light-blocking elements 622 located at the bottom of the U-shape are slightly different from those of the light-blocking elements 622 located on both sides of the U-shape (the differences are indicated below in Table 6A).

[0099] In addition, the open ring structure may also include a plurality of auxiliary arches 623, and the light-blocking elements 622 may be arranged on the auxiliary arches 623. In particular, the shape and size of the auxiliary arches 623 located at the bottom of the U-shape are slightly different from those of the auxiliary arches 623 located on both sides of the U-shape (the differences are shown below in Table 6A).

[0100] Furthermore, in the first example of the sixth embodiment, the optical path folding element 610 is made of plastic. The opaque body 620 is made of black plastic.

[0101] In Fig. 6E and Fig.6F, in the 1st example of the 6th embodiment, when the outgoing optical axis Oe is regarded as the center of a circle, where θe is an angle occupied by the light blocking elements 622, Ne is the number of the light blocking elements 622, θe' is the included angle of the wedge-shaped projection, r is the radius of curvature of the auxiliary arcs 623, He is the height of each of the light blocking elements 622 extending in a direction perpendicular to the outgoing optical axis Oe, and Le is the length of each of the light blocking elements 622 extending in a direction parallel to the outgoing optical axis Oe, the following conditions shown in Table 6A are satisfied.It should be noted that in Table 6A, in the fields of θe', r and He, the left value is the value of the light blocking elements 622 and the auxiliary arches 623 located at the bottom of the U-shape, and the right value is the value of the light blocking elements 622 and the auxiliary arches 623 located on both sides of the U-shape. Table 6A - 1. Example of the 6th embodiment θe (°) 219,2 He (mm) 0,06, 0,07 No 232 Le (mm) 0,87 θe' (°) 55,6, 78,8 r (mm) 9,0, 27,4 <7th Embodiment>

[0102] Fig. 7A is a schematic view of the optical path folding module 700 in the 1st example of the 7th embodiment of the present disclosure. Fig. Fig. 7B is an exploded view of the optical path folding module 700 of the 1st example of the 7th embodiment of the Fig. 7A. Fig. Fig. 7C is a plan view of the optical path folding module 700 of the 1st example of the 7th embodiment of the Fig. 7A. In Fig. 7A, Fig. 7B and Fig.7C, the optical path folding module 700 comprises an optical path folding element 710 and an opaque body 720, wherein the opaque body 720 is arranged correspondingly to the optical path folding element 710. Furthermore, the optical path folding module 700 may further comprise a cover 701 and a mounting support 702, wherein the opaque body 720 and the optical path folding element 710 are arranged on the mounting support 702. The cover 701 covers the mounting support 702, which is favorable for the arrangement of the entire optical path folding module 700 in the camera module or other devices.

[0103] Fig. Fig. 7D is a schematic view of the opaque body 720 of the 1st example of the 7th embodiment of the Fig. 7A. Fig. Fig. 7E is another plan view of the optical path folding module 700 of the 1st example of the 7th embodiment of the Fig. 7A. Fig. Figure 7F is a cross-sectional view taken along line 7F-7F in Fig. 7E. In Fig.7D to Fig. 7F, the optical path folding element 710 serves to fold an incident optical axis Oi into an outgoing optical axis Oe and has a light incident surface 711 and a light exit surface 712. The incident optical axis Oi passes through the light incident surface 711 and enters it. The exit optical axis Oe passes through the light exit surface 712 and departs from it. In the first example of the seventh embodiment, the optical path folding element 710 is a prism.

[0104] The opaque body 720 has an open structure (the reference numeral of which has been omitted) and a plurality of light-blocking elements 722. The incident optical axis Oi passes through a notch opening 721 of the open ring structure. The light-blocking elements 722 protrude from the open ring structure in a direction perpendicular to the incident optical axis Oi toward the incident optical axis Oi, and the light-blocking elements 722 are arranged adjacent to the light incident surface 711 of the optical path folding element 710. Furthermore, the opaque body 720 and the light-blocking elements 722 are integrally formed.

[0105] Each of the light-blocking elements 722 protrudes toward the incident optical axis Oi and progressively shrinks and intersects. Each of the light-blocking elements 722 is a wedge-shaped protrusion.

[0106] Furthermore, in the first example of the seventh embodiment, the optical path folding element 710 is made of plastic. The opaque body 720 is made of black plastic.

[0107] In Fig. 7C and Fig. 7F, in the 1st example of the 7th embodiment, when the incident optical axis Oi is regarded as the center of a circle, where θi is an angle occupied by the light blocking elements 722, Ni is the number of the light blocking elements 722, θi' is the included angle of the wedge-shaped projection, Hi is the height of each of the light blocking elements 722 extending in a direction perpendicular to the incident optical axis Oi, and Li is the length of each of the light blocking elements 722 extending in a direction parallel to the incident optical axis Oi, the following conditions shown in Table 4A are satisfied. Table 7A - 1. Example of the 7th embodiment θi (°) 123,6 Hi (mm) 0,35 No 220 Length (mm) 0,35 θi' (°) 20 <8th Embodiment>

[0108] Fig.8A is a schematic view of the optical path folding module in Example 1 of the 8th Embodiment of the present disclosure. Fig. Fig. 8B is an exploded view of the optical path folding module 800 of the 1st example of the 8th embodiment of the Fig. 8A. Fig. Fig. 8C is a plan view of the optical path folding module 800 of the 1st example of the 8th embodiment of the Fig. 8A. In Fig. 8A, Fig. 8B and Fig.8C, the optical path folding module 800 includes an optical path folding element 810 and an opaque body 820, wherein the opaque body 820 is arranged correspondingly to the optical path folding element 810. Furthermore, the optical path folding module 800 may further include a cover 801 and a mounting support 802, wherein the opaque body 820 and the optical path folding element 810 are arranged on the mounting support 802. The cover 801 covers the mounting support 802, which is favorable for the arrangement of the entire optical path folding module 800 in the camera module or other devices.

[0109] Fig. Fig. 8D is a schematic view of the opaque body 820 of the 1st example of the 8th embodiment of the Fig. 8A. Fig. Fig. 8E is another plan view of the optical path folding module 800 of the 1st example of the 8th embodiment of the Fig. 8A. Fig. Figure 8F is a cross-sectional view taken along line 8F-8F in Fig. 8E. In Fig.8D to Fig. 8F, the optical path folding element 810 serves to fold an incident optical axis Oi into an outgoing optical axis Oe and has a light incident surface 811 and a light exit surface 812. The incident optical axis Oi passes through the light incident surface 811 and enters it. The exit optical axis Oe passes through the light exit surface 812 and departs from it. In the first example of the eighth embodiment, the optical path folding element 810 is a prism.

[0110] The opaque body 820 has an open structure (the reference numeral of which has been omitted) and a plurality of light-blocking elements 822. The outgoing optical axis Oe passes through a notch opening 821 of the open ring structure. The light-blocking elements 822 protrude from the open ring structure in a direction perpendicular to the outgoing optical axis Oe toward the outgoing optical axis Oe, wherein the light-blocking elements 822 are arranged adjacent to the light exit surface 812 of the optical path folding element 810. Furthermore, the opaque body 820 and the light-blocking elements 822 are integrally formed.

[0111] The light-blocking elements 822 are wave-shaped. Specifically, a portion of the light-blocking elements 822 forms a convex arc (the reference numeral of which is omitted), and a portion of the light-blocking elements 822 forms a concave arc (the reference numeral of which is omitted). The convex arc and the concave arc are arranged alternately. Furthermore, the open ring structure may include a plurality of auxiliary arcs 823, and the light-blocking elements 822 are arranged on the auxiliary arcs 823.

[0112] Furthermore, in the first example of the eighth embodiment, the optical path folding element 810 is made of plastic. The opaque body 820 is made of black plastic.

[0113] In Fig. 8C, Fig. 8E and Fig.8F, in the 1st example of the 8th embodiment, when the outgoing optical axis Oe is regarded as the center of a circle, where θe is an angle occupied by the light blocking elements 822, Ne is the number of the light blocking elements 822, Re is the radius of curvature of the convex arc and Re' is the radius of curvature of the concave arc, r is the radius of curvature of the auxiliary arcs 823, He is the height of each of the light blocking elements 822 extending in a direction perpendicular to the outgoing optical axis Oe, and Le is the length of each of the light blocking elements 822 extending in a direction parallel to the outgoing optical axis Oe, the following conditions shown in Table 8A are satisfied. Table 8A - 1. Example of the 8th embodiment θe (°) 130,6 He (mm) 0,59 No 105 Le (mm) 1,40 Re (mm) 0,05 Re' (mm) 0,05 r (mm) 2 <9th Embodiment>

[0114] Fig. 9A is a schematic view of the electronic device 90 in the 9th embodiment of the present disclosure. Fig.Fig. 9B is another schematic view of the electronic device 90 in the 9th embodiment in Fig. 9A. In Fig. 9A and Fig.9B, the electronic device 90 is a smartphone and includes a plurality of camera modules, a plurality of image sensors, and a user interface 97, wherein the image sensors are each arranged in the image area of ​​a respective camera module. Furthermore, the camera modules include a high-resolution camera module 91, an ultra-wide-angle camera module 92, and two telephoto camera modules 93, 94, and the user interface 97 is a touchscreen, but is not limited thereto. In particular, each camera module may include the optical path folding module according to any example of the above-mentioned 1st Embodiment to 8th Embodiment and an imaging lens array, and the imaging lens array is arranged adjacent to the optical path folding module, but the present disclosure is not limited thereto.

[0115] Additionally, users enter a shooting mode via the user interface 97. The user interface 97 serves to display the subject, and the shooting angle can be manually adjusted to switch between the different camera modules. At this time, the image-forming light is projected onto the image sensor by the camera module, and an electronic signal representing an image is output to an image signal processor (ISP) 95.

[0116] To fulfill a technical feature of the electronic device 90, the electronic device 90 may be Fig.9A may further include an optical anti-shake mechanism (not shown in the drawings). Furthermore, the electronic device 90 may include at least one focusing assist module (not shown in the drawings) and at least one sensor component (not shown in the drawings). The focusing assist module may be a flash module 96 for color temperature compensation, an infrared distance measuring component, a laser focusing module, etc. The sensor component may include torque and kinetic energy sensing functions such as an accelerometer, gyroscope, and Hall effect element to detect shaking or jitter that may be exerted by the user's hands or external influences. Accordingly, the camera module of the electronic device 90, equipped with an autofocus function and the optical anti-shake mechanism, may be enhanced to achieve high image quality.In addition, the electronic device 90 of the present disclosure may have a shooting function with multiple shooting modes, such as taking optimized selfies, high depth of field (HDR) in low light conditions, 4K resolution recording, etc. Furthermore, users can view an image captured by the camera through the user interface 97 and manually adjust the subject detection area on the user interface 97 to achieve a "what you see is what you get" autofocus function.

[0117] Furthermore, the camera module, the optical anti-shake mechanism, the sensor component, and the focus assist module may be arranged on a flexible printed circuit board (FPC) (not shown in the drawings) and electrically connected to related components, such as the image signal processor 95, via a connector (not shown in the drawings) to perform a shooting operation. Since current electronic devices such as smartphones strive for compactness, the method of first arranging the camera module and related parts on the flexible printed circuit board and then integrating the circuit into the main board of the electronic device through a connector can meet the requirements of mechanical design and circuit layout in a limited space in the electronic device and achieve greater flexibility.The autofocus function of the camera module can also be adjusted more flexibly via the touchscreen of the electronic device. In the ninth embodiment, the electronic device 90 may include a plurality of sensor parts and a plurality of focus assist modules. The sensor parts and the focus assist modules are arranged on the flexible circuit board and at least one other flexible circuit board (not shown in the drawings) and electrically connected to the associated components, such as the image signal processor 95, via corresponding connectors to perform the recording operation. In other embodiments (not shown in the drawings), the sensor parts and the optical assist elements may also be arranged on the main board of the electronic device or other types of boards depending on the requirements of the mechanical design and circuit layout.

[0118] In addition, the electronic device 90 may also include, but is not limited to, a display, a control unit, a storage unit, a volatile memory (RAM), a read-only memory (ROM), or combinations thereof.

[0119] Fig. Fig. 9C is a schematic view of a signal generated by the electronic device 90 in the 9th embodiment of the Fig. 9A. As shown in Fig. 9C, an image with a larger range can be captured by the ultra-wide angle lens camera module 92, and the ultra-wide angle lens camera module 92 can have the function of including a larger range of the subject.

[0120] Fig. Fig. 9D is another schematic view of a signal generated by the electronic device 90 in the 9th embodiment of the Fig. 9A. As shown in Fig.9D, a high-resolution image of a specific area can be captured by the high-resolution camera module 91, and the high-resolution camera module 91 has the function of high resolution and low distortion.

[0121] Fig. Fig. 9E is another schematic view of a circuit connected to the electronic device 90 in the 9th embodiment of the Fig. 9A. As shown in Fig. 9E, the telephoto lens camera modules 93, 94 have a high magnification function, and a distant image can be captured and highly magnified by the telephoto lens camera modules 93, 94.

[0122] As in the Fig. 9C to Fig. As shown in Fig. 9E, a zoom function can be obtained with the electronic device 90 when the subject is captured by camera modules with different focal lengths and processed by the image processing function. <10th Embodiment>

[0123] Fig. 10 is a schematic view of the electronic device 90a in the 10th embodiment of the present disclosure. In Fig.10, the electronic device 90a is a smartphone and includes a plurality of camera modules and a plurality of image sensors, each of which is arranged in the image area of ​​a camera module. Furthermore, the camera modules include the ultra-wide-angle lens camera modules 91a, 92a, the wide-angle lens camera modules 93a, 94a, the telephoto lens camera modules 95a, 96a, 97a, 98a, and a time-of-flight (TOF) module 99a. The TOF module 99a may be a different type of camera module, and the arrangement is not limited thereto. Specifically, the camera modules may include the optical path folding module according to any one of the first embodiment to the eighth embodiment and an imaging lens array, and the imaging lens array is arranged adjacent to the optical path folding element, but the present disclosure is not limited thereto.

[0124] In addition, the camera modules 97a, 98a are configured to fold the beam path, but the present disclosure is not limited to this.

[0125] To fulfill a technical feature of the electronic device 90a, the electronic device 90a may be Fig.9A may further include an optical anti-shake mechanism (not shown in the drawings). Furthermore, the electronic device 90a may include at least one focusing assist module (not shown in the drawings) and at least one sensor component (not shown in the drawings). The focusing assist module may be a flash module 901a for color temperature compensation, an infrared distance measuring component, a laser focusing module, etc. The sensor component may have torque and kinetic energy detection functions such as an accelerometer, gyroscope, Hall effect element, to detect shaking or trembling caused by the user's hands or external influences. Accordingly, the camera module of the electronic device 90a, equipped with an autofocus function and the optical anti-shake mechanism, may be enhanced to achieve high image quality.In addition, the electronic device 90a of the present disclosure may have a recording function with multiple recording modes, such as taking optimized selfies, high depth of field (HDR) in low light, 4K resolution recording, etc.

[0126] Furthermore, all other elements and arrangements in the 10th embodiment are the same as the elements and arrangements in the 9th embodiment and will not be described again here. <11th Embodiment>

[0127] Fig. 11A is a schematic view of a vehicle device 90b in the 11th embodiment of the present disclosure. Fig. Fig. 11B is another schematic view of the vehicle device 90b in the 11th embodiment of the Fig. 11A. Fig. Fig. 11C is another schematic view of the vehicle device 90b in the 11th embodiment of the Fig. 11A. In the Fig. 11A to Fig. 11C, the vehicle device 90b includes a plurality of camera modules 91b and a plurality of image sensors, each of which is arranged in an image area of ​​a camera module 91b. In the 11th embodiment, the number of camera modules 91b is six, and the camera modules 91b may include the optical path folding module according to any one of the above-mentioned 1st embodiment to 8th embodiment and an imaging lens array, and the imaging lens array is arranged adjacent to the optical path folding module, but the present disclosure is not limited to this.

[0128] In Fig. 11A and Fig. 11B, the camera module 91b is a motor vehicle camera module, with two of the camera modules 91b located on the left and right sides below the rearview mirrors. Each of the two camera modules 91b records image information of a field of view A. In particular, the field of view A can satisfy the following condition: 40° < A < 90°. Thus, the image information in the area of ​​two lanes on the left and right sides can be recorded.

[0129] In Fig. 11B, two more of the camera modules 91b can be arranged in the interior of the vehicle device 90b. In particular, the two mentioned camera modules 91b can be arranged near the rearview mirror inside the vehicle device 90b or near the rear window of the vehicle, or can be arranged on non-reflective surfaces on the rearview mirrors of the vehicle device 90b on the left and right sides, respectively, but are not limited thereto.

[0130] In Fig. 11C, two more of the camera modules 91b can be arranged at the front and rear of the vehicle device 90b. Furthermore, by arranging the camera modules 91b at the front, rear, and under the left and right rearview mirrors of the vehicle device 90b, traffic information outside the vehicle can be advantageously perceived. The traffic information outside the vehicle can be I1, I2, I3, and I4, but is not limited thereto. Therefore, the viewing angle can be widely offered to reduce the blind spot, which is advantageous for improving driving safety. Furthermore, by arranging the camera modules 91b around the vehicle device 90b, it is advantageous for perceiving the external space information outside the vehicle device 90b, so that the automatic driver assistance function can be achieved.

Claims

[1] Ray path folding module (200), comprising: a beam path folding element (210) for folding an incident optical axis (Oi) into an exiting optical axis (Oe), wherein the optical path folding element (210) comprises: a light incident surface (211), wherein the incident optical axis (Oi) traverses and enters the light incident surface (211), and a light exit surface (212), wherein the exiting optical axis (Oe) passes through the light exit surface (212) and extends away from it, and an opaque body (220) arranged corresponding to the optical path folding element (210), the opaque body (220) comprising: an open ring structure, wherein the emerging optical axis (Oe) passes through a notch opening (2212) of the open ring structure, and a plurality of light blocking elements (2222) extending from the open ring structure in a direction perpendicular to the exiting optical axis (Oe) toward the exiting optical axis (Oe), wherein the plurality of light blocking elements (2222) are arranged adjacent to the light exit surface (212) of the optical path folding element (210), wherein, when the exiting optical axis (Oe) is regarded as the center of a circle, with θe being an angle occupied by the plurality of light blocking elements (2222) and Ne being the number of the plurality of light blocking elements (2222), the following conditions are met: 10°<θe<350° and 15 <Ne<460. [2] The optical path folding module (200) according to claim 1, wherein each of the plurality of light blocking elements (2222) projects toward the exiting optical axis (Oe) and progressively shrinks and overlaps. [3] Optical path folding module (200) according to claim 1, in which the opaque body (220) and the plurality of light blocking elements (2221, 2222) are integrally formed. [4] Optical path folding module (200) according to claim 1, in which, when the outgoing optical axis (Oe) is regarded as the center of a circle, with θe being the angle occupied by the plurality of light blocking elements (2222) and Ne being the number of the plurality of light blocking elements (2222), the following conditions are satisfied: 10°<θe<150° and 15 <Ne<250. [5] Optical path folding module according to claim 1, in which, when the outgoing optical axis (Oe) is regarded as the center of a circle, with θe being the angle occupied by the plurality of light blocking elements (322) and Ne being the number of the plurality of light blocking elements (322), the following conditions are satisfied: 110°<θe<350° and 50 <Ne<300. [6] The optical path folding module (200) according to claim 1, wherein each of the plurality of light blocking elements (2222) is a wedge-shaped projection, and θe' is the included angle of the wedge-shaped projection and satisfies the following condition: 0°<θe'<90°. [7] The optical path folding module (500) according to claim 1, wherein each of the plurality of light blocking elements (522) forms a convex arc, and Re is the radius of curvature of the convex arc, satisfying the following condition: 0 mm <Re<0,3 mm. [8] The optical path folding module (500) according to claim 1, wherein each of the plurality of light blocking elements (522) forms a concave arc, and Re' is the radius of curvature of the concave arc, satisfying the following condition: 0 mm <Re'<0,3 mm. [9] Optical path folding module (200) according to claim 1, in which the open ring structure further comprises at least one auxiliary arc (2231), at least a part of the plurality of light blocking elements (2221) is arranged on the at least one auxiliary arc (2231), and with r for the radius of curvature of the auxiliary arc (2231), the following condition is met: 0.5 mm <r<50 mm. [10] Optical path folding module (200) according to claim 1, in which the following condition is satisfied with He for the height of each of the plurality of light blocking elements (2222) extending in a direction perpendicular to the exit optical axis (Oe): 0.01 mm <He<1,2 mm. [11] Optical path folding module (200) according to claim 1, in which Le for the length of each of the plurality of light blocking elements (2222) extending in a direction parallel to the exit optical axis (Oe) satisfies the following condition: 0.01 mm <Le<2,8 mm. [12] Beam path folding module (200) according to claim 1, in which the beam path folding element (210) is made of plastic. [13] Optical path folding module (200) according to claim 1, in which the opaque body (220) is made of black plastic. [14] Camera module (20), comprising: the optical path folding module (200) according to claim 1 and an imaging lens arrangement (21) arranged adjacent to the optical path folding module (200). [15] Electronic device (90) comprising: the camera module according to claim 14 and an image sensor arranged in the image area of ​​the camera module. [16] Ray path folding module (100), comprising: a beam path folding element (110) for folding an incident optical axis (Oi) into an exiting optical axis (Oe), wherein the optical path folding element (110) comprises: a light incident surface (111), wherein the incident optical axis (Oi) traverses and enters the light incident surface (111), and a light exit surface (112), wherein the exiting optical axis (Oe) passes through the light exit surface and extends away from it, and an opaque body (120) arranged corresponding to the optical path folding element (110), the opaque body (120) comprising: an open ring structure, wherein the incident optical axis (Oi) passes through a notch opening (121) of the open ring structure, and a plurality of light blocking elements (122) projecting from the open ring structure in a direction perpendicular to the incident optical axis (Oi) toward the incident optical axis (Oi), wherein the plurality of light blocking elements (122) are arranged adjacent to the light entry surface (111) of the optical path folding element (110), wherein, when the incident optical axis (Oi) is regarded as the center of a circle, with θi being an angle occupied by the plurality of light blocking elements (122) and Ni being the number of the plurality of light blocking elements (122), the following conditions are satisfied: 10°<θi<350° and 15 <Ni<640. [17] Optical path folding module (100) according to claim 16, in which each of the plurality of light blocking elements (122) projects towards the incident optical axis (Oi) and progressively shrinks and overlaps. [18] Optical path folding module (100) according to claim 16, in which the opaque body (120) and the plurality of light blocking elements (122) are formed in one piece. [19] Optical path folding module (100) according to claim 16, in which, when the incident optical axis (Oi) is regarded as the center of a circle, with θi being the angle occupied by the plurality of light blocking elements (122) and Ni being the number of the plurality of light blocking elements (122), the following conditions are satisfied: 10°<θi<150° and 15 <Ni<250. [20] Optical path folding module (100) according to claim 16, in which, when the incident optical axis (Oi) is considered as the center of a circle, with θi being the angle occupied by the plurality of light blocking elements (122) and Ni being the number of the plurality of light blocking elements (122), the following conditions are satisfied: 110°<θi<350° and 50 <Ni<300. [21] Optical path folding module (100) according to claim 16, in which each of the plurality of light blocking elements (122) is a wedge-shaped projection and θi' for the included angle of the wedge-shaped projection satisfies the following condition: 0°<θi'<90°. [22] The optical path folding module according to claim 16, wherein each of the plurality of light blocking elements forms a convex arc, and Ri satisfies the following condition for the radius of curvature of the convex arc: 0 mm <Ri<0,3 mm. [23] Optical path folding module (100) according to claim 16, in which each of the plurality of light blocking elements (122) forms a concave arc and Ri' for the radius of curvature of the concave arc satisfies the following condition: 0 mm <Ri'<0,3 mm. [24] Optical path folding module (100) according to claim 16, in which the open ring structure further comprises at least one auxiliary arc (123), at least a part of the plurality of light blocking elements (122) is arranged on the at least one auxiliary arc (123), and with r for the radius of curvature of the at least one auxiliary arc (123), the following condition is met: 0.5 mm <r<50 mm. [25] Optical path folding module (100) according to claim 16, in which Hi for the height of each of the plurality of light blocking elements (122) extending in a direction perpendicular to the incident optical axis (Oi) satisfies the following condition: 0.01 mm <Hi<1,2 mm. [26] Optical path folding module (100) according to claim 16, in which Li for the length of each of the plurality of light blocking elements (122) extending in a direction parallel to the incident optical axis (Oi) satisfies the following condition: 0.01 mm <Li<2,8 mm. [27] Beam path folding module (100) according to claim 16, in which the beam path folding element (110) is made of plastic. [28] Optical path folding module (100) according to claim 16, in which the opaque body (120) is made of black plastic.

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