Optical lens system, camera module and electronic device

Abstract

Optical lens system (1) with an optical axis (OA), wherein the optical axis (OA) comprises: a tube (10) wherein the optical axis (OA) passes through the tube (10); a lens element (E1) arranged along the optical axis (OA) and located in the tube (10), wherein the lens element (E1) has a first section (R1) and the first section (R1) surrounds the optical axis (OA); a spacer element (13) which is arranged adjacent to the lens element (E1) and surrounds the optical axis (OA), and wherein the spacer element (13) has: a first surface (131), wherein the first section (R1) of the lens element (E1) is supported on the first surface (131) in a direction parallel to the optical axis (OA); a second surface (132) which is arranged opposite the first surface (131); an axial side surface (133) connected to the first surface (131) on a side closest to the optical axis (OA) and to the second surface (132) on a side closest to the optical axis (OA), wherein the axial side surface (133) surrounds the optical axis (OA) and gradually tapers towards the optical axis (OA), where it forms a light-transmitting hole (PH); and a side surface (134) farther from the axis, which is connected to the first surface (131) on a side that is furthest from the optical axis (OA), and is connected to the second surface (132) on a side that is furthest from the optical axis (OA); and a retaining element (15) which is fixedly arranged with the tube (10) to maintain a relatively fixed position between the lens element (E1) and the tube (10) along the optical axis (OA), wherein the spacer element (13) is arranged between the lens element (E1) and the retaining element (15) and the retaining element (15) has: a second section (R2) which is supported on the second surface (132) in a direction parallel to the optical axis (OA), and wherein the second section (R2) surrounds the optical axis (OA); where the first section (R1) and the second section (R2) do not overlap in a direction parallel to the optical axis (OA).

Description

BACKGROUND Subject area

[0001] The present disclosure relates to an optical lens system, a camera module and an electronic device, in particular an optical lens system and a camera module that can be used in an electronic device. Description of related technology

[0002] With the development of semiconductor manufacturing technology, the performance of image sensors has improved and their pixel size has decreased. Therefore, high image quality is now one of the essential features of an optical lens system. Furthermore, due to rapid technological advancements, smartphones equipped with optical lens systems are becoming increasingly multifunctional for various applications, which has raised the bar for the functionality of these systems.

[0003] With the increasing demands of photography, optical lens systems must withstand ever harsher environmental conditions. If the lens elements within an optical lens system deform due to environmental changes, the resulting stress can impair optical quality. Therefore, improving the structure of internal components in optical lens systems to minimize the impact of environmental fluctuations on image quality has become a crucial issue in this field, in order to meet the high performance requirements of modern electronic devices. SUMMARY

[0004] According to one aspect of the present disclosure, an optical lens system has an optical axis and comprises a tube, a lens element, a spacer element, and a retaining element. The optical axis passes through the tube. The lens element is arranged along the optical axis and within the tube, and the lens element has a first section that surrounds the optical axis. The spacer element is located adjacent to the lens element and surrounds the optical axis, and the spacer element has a first surface, a second surface, a near-axis side surface, and a far-axis side surface. The first section of the lens element is supported on the first surface in a direction parallel to the optical axis. The second surface is located opposite the first surface.The near-axis surface is connected to the first surface on the side closest to the optical axis and to the second surface on the side closest to the optical axis. The near-axis surface surrounds the optical axis and gradually tapers towards it, forming a light-transmitting aperture. The far-axis surface is connected to the first surface on the side furthest from the optical axis and to the second surface on the side furthest from the optical axis. The retaining element is fixed to the tube to maintain a relatively fixed position between the lens element and the tube along the optical axis. The spacer element is positioned between the lens element and the retaining element.The retaining element has a second section that surrounds the optical axis, and this second section is supported on the second surface in a direction parallel to the optical axis. Furthermore, the first and second sections do not overlap in a direction parallel to the optical axis.

[0005] According to another aspect of the present disclosure, an optical lens system has an optical axis and comprises a tube, a lens element, a spacer element, and a retaining element. The optical axis passes through the tube, and the tube has a first annular surface that surrounds the optical axis. The lens element is arranged along the optical axis and on the first annular surface of the tube, and the lens element has a first section that surrounds the optical axis. The spacer element is located adjacent to the lens element and surrounds the optical axis, and the spacer element has a first surface, a second surface, a side near the axis, and a side far from the axis. The first section of the lens element is supported on the first surface in a direction parallel to the optical axis. The second surface is located opposite the first surface.The near-axial surface is connected to the first surface on a side closest to the optical axis and to the second surface on a side closest to the optical axis. The near-axial surface surrounds the optical axis and gradually tapers towards it, forming a light-transmitting aperture. The far-axial surface is connected to the first surface on a side furthest from the optical axis and to the second surface on a side furthest from the optical axis. The retaining element is fixed to the tube to maintain a relatively fixed position between the lens element and the tube along the optical axis. The spacer element is positioned between the lens element and the retaining element.The retaining element has a second annular surface and a second section, both of which surround the optical axis, and the second section is supported on the second surface in a direction parallel to the optical axis. Furthermore, a gap is formed between the distal side surface and at least one of the first annular surfaces and the second annular surface, and the gap extends from the distal side surface in the direction of the optical axis along at least one of the first and second surfaces. Additionally, the first annular surface and / or the second annular surface, which together with the distal side surface form the gap, face the distal side surface. The gap also overlaps with the first and second sections in a direction parallel to the optical axis.

[0006] According to another aspect of the present disclosure, a camera module comprises the aforementioned optical lens system and an image sensor arranged on an image surface of the optical lens system.

[0007] According to another aspect of the present disclosure, an electronic device comprises the aforementioned camera module. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The disclosure can be better understood by reading the following detailed description of the embodiments with reference to the accompanying drawings: Fig. 1 is a sectional view of an optical lens system according to the first embodiment of the present disclosure; Fig. Figure 2 is an enlarged view of section EL2 in Fig. 1; Fig. Figure 3 is an exploded view of the optical lens system in Fig. 1; Fig. Figure 4 is a cross-sectional view of the optical lens system in Fig. 1; Fig. Figure 5 is an enlarged view of section EL5 in Fig. 4; Fig. Figure 6 is a top view of a spacer element of the optical lens system according to the first embodiment of the present disclosure; Fig. Figure 7 is a sectional view of an optical lens system according to the second embodiment of the present disclosure; Fig. Figure 8 is an enlarged view of section EL8 in Fig. 7; Fig. Figure 9 is an exploded view of the optical lens system in Fig. 7; Fig. Figure 10 is a cross-sectional view of the optical lens system in Fig. 7; Fig. Figure 11 is an enlarged view of section EL11 in Fig. 10; Fig. Figure 12 is a top view of a spacer element of the optical lens system according to the second embodiment of the present disclosure; Fig. Figure 13 is a sectional view of an optical lens system according to the 3rd embodiment of the present disclosure; Fig. Figure 14 is an enlarged view of section EL14 in Fig. 13; Fig. Figure 15 is an exploded view of the optical lens system in Fig. 13; Fig. Figure 16 shows a cross-sectional view of the optical lens system in Fig. 13; Fig. Figure 17 is an enlarged view of section EL17 in Fig. 16; Fig. Figure 18 is a top view of a spacer element of the optical lens system according to the third embodiment of the present disclosure; Fig. 19 is a sectional view of an optical lens system according to the fourth embodiment of the present disclosure; Fig. 20 is an enlarged view of section EL20 in Fig. 19; Fig. Figure 21 is an exploded view of the optical lens system in Fig. 19; Fig. Figure 22 is a cross-sectional view of the optical lens system in Fig. 19; Fig. 23 is an enlarged view of section EL23 in Fig. 22; Fig. Figure 24 is a top view of a spacer element of the optical lens system according to the fourth embodiment of the present disclosure; Fig. Figure 25 is a top view of a spacer element of an optical lens system according to a configuration of the present disclosure; Fig. 26 is a top view of a spacer element of an optical lens system according to a further configuration of the present disclosure; Fig. 27 is a perspective view of an electronic device according to the fifth embodiment of the present disclosure; Fig. Figure 28 is another perspective view of the electronic device in Fig. 27; Fig. Figure 29 is a representation of an image taken by an ultra-wide-angle camera module; Fig. 30 is a representation of an image taken by a high-pixel camera module; Fig. Figure 31 is a representation of an image taken by a telephoto camera module; Fig. Figure 32 is a perspective view of an electronic device according to the sixth embodiment of the present disclosure; Fig. Figure 33 is a perspective view of an electronic device according to the seventh embodiment of the present disclosure; Fig. Figure 34 shows a side view of the electronic device in Fig. 33; Fig. Figure 35 shows a view of the top of the electronic device in Fig. 33; and Fig. Figure 36 is a perspective view of an electronic device according to the eighth embodiment of the present disclosure. DETAILED DESCRIPTION

[0009] The following detailed description provides numerous specific details for explanatory purposes, enabling a thorough understanding of the disclosed embodiments. However, it will be clear that one or more embodiments can be realized without these specific details. In other cases, known structures and devices are represented schematically to simplify the drawing.

[0010] The present disclosure relates to an optical lens system. The optical lens system comprises a tube, a lens element, a spacer element, and a retaining element. The optical lens system has an optical axis, and the optical axis passes through the tube. The lens element is arranged along the optical axis and within the tube, and the lens element has a first section that surrounds the optical axis.

[0011] The spacer element is positioned adjacent to the lens element and surrounds the optical axis. The spacer element has a first surface, a second surface, a near-axis side surface, and a far-axis side surface. The second surface is positioned opposite the first surface, and the first section of the lens element is supported on the first surface in a direction parallel to the optical axis. The near-axis side surface is connected to the first surface on a side closest to the optical axis and to the second surface on a side closest to the optical axis. The near-axis side surface surrounds the optical axis and gradually tapers towards it, forming a light-transmitting aperture.The side surface furthest from the optical axis is connected to the first surface on a side that is furthest from the optical axis, and to the second surface on a side that is furthest from the optical axis. Additionally, the spacer element can have a light-blocking function to prevent glare.

[0012] The retaining element is rigidly arranged with the tube to maintain a relatively fixed position between the lens element and the tube along the optical axis. In particular, the retaining element is arranged with the lens element to maintain the position of the lens element within the tube, thereby preventing the lens element from tilting or becoming detached and ensuring the stability of the optical image quality. Furthermore, the retaining element can be attached to the tube by means such as threads, adhesives, or mechanical clamps. Alternatively, the retaining element can be formed integrally with the tube. However, the present disclosure is not limited to this.

[0013] The retaining element has a second section that surrounds the optical axis, the spacer element is arranged between the lens element and the retaining element, and the second section of the retaining element is supported on the second surface of the spacer element in a direction parallel to the optical axis.

[0014] According to the optical lens system disclosed in the present disclosure, the appropriate arrangement of the spacer element, the tube, the lens element and the retaining element enables a controlled change of the distance between the lens element and the retaining element when the lens element deforms due to environmental changes, in order to prevent stresses from impairing the optical quality.

[0015] In this configuration, the first section of the lens element and the second section of the retaining element cannot overlap in a direction parallel to the optical axis. Therefore, by spacing the lens element and the retaining element apart using the spacer element and ensuring that the first and second sections do not overlap in a direction parallel to the optical axis, the distance between the lens element and the retaining element can be controlled and adjusted. This prevents the lens element from deforming due to environmental changes, thus preventing stresses from affecting the optical quality.

[0016] In one configuration, a gap can be formed between the off-axis side face of the spacer element and at least one of the tube and the retaining element. This gap can extend from the off-axis side face toward the optical axis along at least one of the first and second surfaces. Therefore, it is advantageous for the gap to provide clearance for the deformation of the spacer element, thus preventing buckling or displacement during deformation and maintaining structural stability. In particular, the tube can have a first annular surface surrounding the optical axis, and the lens element can be arranged along the optical axis and mounted on the first annular surface of the tube. Furthermore, the retaining element can have a second annular surface surrounding the optical axis.Furthermore, a gap can be formed between the off-axis surface of the spacer element and at least one of the first and second annular surfaces, and the gap can extend from the off-axis surface along at least one of the first and second surfaces in the direction of the optical axis. Additionally, the first and / or second annular surfaces that form the gap with the off-axis surface can face the off-axis surface.Therefore, it is advantageous for the gap to provide space for the deformation of the spacer element in a direction parallel to the optical axis and / or in a direction perpendicular to the optical axis. Since the gap is formed on the side face farther from the axis, it is also advantageous to prevent lateral forces perpendicular to the optical axis from acting on the spacer element during deformation, thus preventing displacement that could impair optical quality. The first annular surface of the tube can refer to an inner surface of the tube, and the inner surface of the tube can accommodate the arrangement of the lens element and other optical components, such as spacer rings, retaining rings, and light-blocking elements.The second ring-shaped surface of the retaining element can refer to an inner surface of the retaining element, and the inner surface of the retaining element can, for example, be in contact with an outer surface of the tube, be mounted with the tube and / or be in contact with the spacer element.

[0017] The gap can overlap with either the first or second section in a direction parallel to the optical axis. Therefore, it is advantageous for the specific distance between the lens element and the holding element to change with environmental fluctuations, thus preventing stresses from adversely affecting the optical quality of the lens element and improving the environmental adaptability of the optical lens system.

[0018] The spacer and at least one of the tube and the retaining element can be in a clearance fit in a direction perpendicular to the optical axis. Therefore, during mechanical assembly, a deformation clearance for the spacer can be maintained to prevent interference with other components during deformation. This clearance fit can also be referred to as a loose fit. It should be noted that the first section of the lens element and the second section of the retaining element are essentially coaxial mechanically. However, because the spacer is mounted to the tube or the retaining element using a clearance fit, sections of the first and second sections that surround the optical axis can be approximately coaxial.

[0019] The retaining element can include a retaining section extending towards the optical axis, and the retaining section has the second section.

[0020] The retaining element can further comprise a barbed structure spaced apart from the retaining section, with the barbed structure positioned closer to the optical axis than the spacer's far side face. Additionally, the spacer can be positioned between the barbed structure and the retaining section. Therefore, the spacer is pre-assembled using the barbed structure to prevent it from detaching from the retaining element, thus improving the assembly process.

[0021] The barb structure can face the lens element and be positioned at a distance from it, and the barb structure can be located further from the optical axis than the lens element. Therefore, the space formed between the lens element and the barb structure provides a deformation margin for the lens element and / or the spacer, and the mounting interference between the components can be reduced after deformation of the lens element and / or the spacer. Furthermore, the gap can encompass a distance between the barb structure and the lens element. For example, the gap formed between the off-axis side face of the spacer and the tube and / or the retaining element can extend to the space between the barb structure and the lens element.

[0022] The tube, spacer, and retaining element can each be made of, for example, plastic or metal, but the present disclosure is not limited to such materials. Furthermore, in a configuration where the spacer is made of plastic, the spacer can deform elastically when the lens element deforms, thereby adaptively reducing the stress on the lens element and maintaining its position to preserve optical quality. Furthermore, in a configuration where the retaining element is made of metal, the retaining section can have sufficient stiffness to prevent the lens element from coming loose. The metal can be, for example, aluminum or brass, but the present disclosure is not limited to such materials.Furthermore, mounting a metal retaining element with a plastic tube can improve the axial deformation resistance of the plastic tube and thereby increase the impact resistance of the optical lens system.

[0023] According to the present disclosure, the optical lens system can comprise a lens group, wherein the lens group includes the lens element described above, and the lens group can comprise at least one plastic lens element and at least one glass lens element. Therefore, the optical lens system comprises both plastic lens element(s) and glass lens element(s), thereby improving the optical quality and reducing the influence of environmental factors on the optical lens system. Furthermore, the lens element can be made of plastic material. Therefore, it is advantageous for correcting image distortion at the edges, thereby improving the overall optical quality. Moreover, the lens group is arranged along the optical axis and on the first annular surface of the tube, i.e.,All lens elements of the lens group can be arranged sequentially along the optical axis, and these lens elements can all be arranged on the first annular surface of the tube.

[0024] According to the present disclosure, the optical lens system can further comprise a damper arranged in the gap. This is advantageous for providing a buffer function and further improving the airtightness of the optical lens system. Additionally, arranging the damper in the gap can also reduce the probability of the spacer element becoming eccentric.

[0025] According to the present disclosure, the optical lens system can further comprise a light-blocking element surrounding the optical axis. Moreover, the light-blocking element can be arranged between the lens element and the spacer element, or between the spacer element and the retaining element. This is advantageous for reducing the risk of light leakage if the spacer element deforms, thereby ensuring optical quality.

[0026] The axially adjacent side face of the spacer element can have an antireflection surface, and the reflectance of the antireflection surface is lower than that of the distal side face. Therefore, it is advantageous to prevent light from being reflected at the axially adjacent side face, thus ensuring optical quality. Furthermore, the antireflection surface can reduce reflections through special concave-convex structures, V-groove structures, antireflection coatings, or nanocoatings, although the present disclosure is not limited to these. For example, as in Fig. As shown in Figure 23, the antireflection surface ARL of the axial side surface 433 has a concave-convex structure.

[0027] If the distance between the first section of the lens element and the second section of the retaining element is VG in a direction perpendicular to the optical axis, the following condition can be met: 0.01 mm ≤ VG ≤ 1.2 mm. Therefore, the displacement or deformation of the spacer element can be controlled within a specific distance range. See Fig. 5, which shows a schematic view of VG according to the first embodiment of the present disclosure.

[0028] If the distance between the first and second sections is VG in the direction perpendicular to the optical axis, and the distance between the first and second sections is HG in a direction parallel to the optical axis, the following condition can be met: 0.03 ≤ VG / HG ≤ 3.1. Therefore, the displacement or deformation of the spacer element can be controlled within a specific distance range. See Fig. 5, which shows a schematic view of HG and VG according to the first embodiment of the present disclosure.

[0029] A cross-section parallel to and passing through the optical axis is defined. Furthermore, if the length of the first section is RF1 in a direction perpendicular to the optical axis and the length of the second section is RF2 in a direction perpendicular to the optical axis, the following condition can be satisfied in this cross-section: 0.1 ≤ RF1 / RF2 ≤ 5.1. Therefore, this is advantageous for improving the yield during mechanical assembly at a specific length ratio. Additionally, the following condition can also be satisfied: 0.2 ≤ RF1 / RF2 ≤ 2.5. See [reference]. Fig. 5, which shows a schematic view of RF1 and RF2 according to the first embodiment of the present disclosure.

[0030] The retaining section can further comprise a stop surface, and the spacer element can further comprise a counter-stop surface arranged opposite the stop surface. The distance between the counter-stop surface and the stop surface gradually increases in a direction away from the second section. Furthermore, the stop surface and the counter-stop surface form an angle A1 in the cross-section parallel to and passing through the optical axis, and the following condition can be met: A1 ≤ 20 degrees. Therefore, this is advantageous in preventing excessive deformation of the spacer element, thereby extending the service life of the optical lens system. See Fig. 5, which shows a schematic view of A1 according to the first embodiment of the present disclosure.

[0031] If the length of the stop surface in cross-section SF is and the length of the counter stop surface in cross-section CSF is, the following condition can be met: 0.4 ≤ SF / CSF ≤ 2.5. Therefore, it is advantageous to provide sufficient support after deformation of the spacer element. See Fig. 5, which shows a schematic view of SF and CSF according to the first embodiment of the present disclosure.

[0032] In a configuration where the off-axis side face of the spacer element faces the tube, if the distance between the off-axis side face and the tube is SG in a direction perpendicular to the optical axis, the following condition can be met: 0.007 mm ≤ SG ≤ 0.06 mm. Therefore, a consistent level of optical imaging quality can be maintained within a certain distance range. See [reference]. Fig. 11, which shows a schematic view of SG according to the 2nd embodiment of the present disclosure.

[0033] If the maximum distance between the spacer element and the center of the lens element is SL, and the distance between the off-axis side face and the tube in the direction perpendicular to the optical axis is SG, the following condition can be met: 0.9901 ≤ SL / (SL+SG) ≤ 0.9999. Therefore, by using a clearance fit for mechanical assembly, the gap size can be kept within a certain range, thus ensuring the overall stability of the mechanism. See Fig. 10 and Fig. Figure 11, which show schematic views of SL and SG according to the second embodiment of the present disclosure. Furthermore, the spacer element can be an annular element or an arc-shaped element, but the present disclosure is not limited to this. See, for example, Fig. 24 to Fig. 26, each showing top views of spacer elements of optical lens systems according to different configurations of the present disclosure. As in Fig. As shown in Figure 24, the spacer element 43 is a ring-shaped element. Fig. As shown in Figure 25, the spacer element 53 is an arc-shaped element with a single cutting edge, and the shape of the spacer element 53 can, for example, be designed to correspond to a lens element with a single cutting edge, but the present disclosure is not limited thereto. ... Fig. As shown in Figure 26, the spacer element 63 is an arc-shaped element with a pair of cutting edges, and the shape of the spacer element 63 can, for example, be designed to correspond to a lens element with a pair of cutting edges, but the present disclosure is not limited thereto. The maximum distance between the spacer element and the center of the lens element can be considered as the outer diameter of the annular spacer element or the arc-shaped spacer element.

[0034] In another configuration, where the off-axis side face of the spacer faces the retaining element, if the distance between the off-axis side face and the retaining element is SGD in a direction perpendicular to the optical axis, the following condition can be met: 0.007 mm ≤ SGD ≤ 0.06 mm. Therefore, a consistent level of optical imaging quality can be maintained within a certain distance range. See [reference]. Fig. 5, which shows a schematic view of SGD according to the first embodiment of the present disclosure.

[0035] If the maximum distance between the spacer element and the center of the lens element is SL, and the distance between the off-axis side face and the retaining element in the direction perpendicular to the optical axis is SGD, the following condition can be met: 0.9901 ≤ SL / (SL+SGD) ≤ 0.9999. Therefore, by using a clearance fit for mechanical assembly, the gap size can be kept within a certain range, thus ensuring the overall stability of the mechanism. See Fig. 4 and Fig. Figure 5 shows schematic views of SL and SGD according to the first embodiment of the present disclosure. Furthermore, the spacer element can be an annular element or an arc-shaped element, but the present disclosure is not limited to this. For example, the spacer element can be configured as an arc-shaped element with cut edges corresponding to a lens element with cut edges, but the present disclosure is not limited to this. The maximum distance between the spacer element and the center of the lens element can be considered to be the outer diameter of the annular spacer element or the arc-shaped spacer element.

[0036] According to the present disclosure, a camera module is provided. The camera module comprises an image sensor and the aforementioned optical lens system, wherein the image sensor is arranged on an image surface of the optical lens system.

[0037] According to the present disclosure, an electronic device is provided. The electronic device comprises the aforementioned camera module.

[0038] According to the present disclosure, the aforementioned features and conditions can be used in numerous combinations to achieve corresponding effects.

[0039] In accordance with the above description of the present disclosure, the following specific embodiments are provided for further explanation. 1. Design

[0040] See Fig. 1 to Fig. 6. Fig. 1 is a sectional view of an optical lens system according to the first embodiment of the present disclosure, Fig. Figure 2 is an enlarged view of section EL2 in Fig. 1, Fig. Figure 3 is an exploded view of the optical lens system in Fig. 1, Fig. Figure 4 is a cross-sectional view of the optical lens system in Fig. 1, Fig. Figure 5 is an enlarged view of section EL5 in Fig. 4 and Fig. Figure 6 is a top view of a spacer element of the optical lens system according to the first embodiment of the present disclosure. To clearly illustrate the relative arrangement of the components, some components have been omitted or simplified. For example, the details of the lens group are not intended to limit the present disclosure; therefore, the detailed contours of the lens group are not shown in the figures.

[0041] In this embodiment, an optical lens system 1 is provided. The optical lens system 1 has an optical axis OA, and the optical lens system 1 comprises a tube 10, a lens group 11, a spacer element 13 and a retaining element 15.

[0042] The optical axis OA of the optical lens system 1 passes through the tube 10, and the tube 10 has a first ring-shaped surface CS1 that surrounds the optical axis OA.

[0043] The lens group 11 comprises a plurality of lens elements E0 and E1 arranged sequentially along the optical axis OA. At least one lens element in the lens group 11 is a plastic lens element, and at least one other lens element is a glass lens element. The lens group 11 is arranged along the optical axis OA and is located on the first annular surface CS1 of the tube 10. In particular, the lens elements E0 and E1 in the lens group 11 are arranged sequentially along the optical axis OA, and all lens elements E0 and E1 are located on the first annular surface CS1 of the tube 10. Furthermore, lens element E1 is made of plastic material and has a first section R1, and the first section R1 surrounds the optical axis OA.

[0044] The spacer element 13 is arranged adjacent to the lens element E1 and surrounds the optical axis OA. The spacer element 13 is made of plastic material and has a first surface 131, a second surface 132, an axial side surface 133, and a distal side surface 134. As shown in Fig. 2 and Fig. As shown in Figure 5, the first surface 131 is arranged opposite the second surface 132, and the first section R1 of the lens element E1 is supported on the first surface 131 in a direction parallel to the optical axis OA. The axial side surface 133 is connected to the first surface 131 on a side closest to the optical axis OA and to the second surface 132 on a side closest to the optical axis OA. The axial side surface 133 surrounds the optical axis OA and gradually tapers towards the optical axis OA, forming a light-transmitting hole PH. The far-axis side surface 134 is connected to the first surface 131 on a side that is furthest from the optical axis OA, and to the second surface 132 on a side that is furthest from the optical axis OA, and the far-axis side surface 134 is arranged opposite the near-axis side surface 133.

[0045] As in Fig. 4 and Fig. As shown in Figure 5, the retaining element 15 is made of metallic material and is fixedly arranged with the tube 10 to maintain a relatively fixed position between the lens element E1 and the tube 10 along the optical axis OA. Additionally, the spacer element 13 is arranged between the lens element E1 and the retaining element 15. The retaining element 15 has a second annular surface CS2 and a second section R2, both of which surround the optical axis OA. The second annular surface CS2 faces the optical axis OA, and the second section R2 is supported on the second surface 132 of the spacer element 13 in a direction parallel to the optical axis OA. In this embodiment, the second annular surface CS2 of the retaining element 15 is mounted to the tube 10 and rests against the spacer element 13.

[0046] Furthermore, the retaining element 15 comprises a base section 150, a retaining section 151, and a barbed structure 152. The base section 150 is fixedly arranged with the tube 10. The retaining section 151 is connected to the base section 150 and extends in one direction towards the optical axis OA, and the retaining section 151 has a second section R2. The barbed structure 152 is connected to the base section 150 and extends in one direction towards the optical axis OA, and the barbed structure 152 faces the lens element E1 and is spaced apart from the lens element E1. Furthermore, the barbed structure 152 is spaced apart from the retaining section 151, and the spacer element 13 is arranged between the barbed structure 152 and the retaining section 151.Additionally, the barbed structure 152 is arranged closer to the optical axis OA than the side surface 134 of the spacer element 13 farther away from the optical axis OA than the lens element E1.

[0047] The retaining element 15 and the spacer element 13 are positioned in a clearance fit perpendicular to the optical axis OA. Specifically, the second annular surface CS2 of the retaining element 15 faces the distal side surface 134 of the spacer element 13, and a gap GP is formed between the second annular surface CS2 and the distal side surface 134. Additionally, the gap GP extends from the distal side surface 134 of the spacer element 13 along the first surface 131 towards the optical axis OA. In this embodiment, the gap GP overlaps, as shown in Fig. Figure 5 shows the second section R2 of the retaining element 15 in a direction parallel to the optical axis OA. Furthermore, if the distance between the side surface 134 farthest from the axis and the retaining element 15 in a direction perpendicular to the optical axis OA is SGD, then the following condition is also met: SGD = 0.03 mm.

[0048] As in Fig. 5 and Fig. As shown in Figure 6, the first section R1 of the lens element E1 and the second section R2 of the retaining element 15 do not overlap in a direction parallel to the optical axis OA. It should be noted that the first section R1 and the second section R2, which are shown in Figure 6, do not overlap in a direction parallel to the optical axis OA. Fig. 6 are indicated, referring to the positions at which the first section R1 of the lens element E1 and the second section R2 of the holding element 15 are each projected in a direction parallel to the optical axis OA to corresponding positions on the spacer element 13.

[0049] If the distance between the first section R1 and the second section R2 in a direction perpendicular to the optical axis OA is VG, then the following condition is met: VG = 0.54 mm.

[0050] If the distance between the first section R1 and the second section R2 in the direction perpendicular to the optical axis OA is VG and the distance between the first section R1 and the second section R2 in a direction parallel to the optical axis OA is HG, then the following conditions are met: VG = 0.54 mm; HG = 0.55 mm; and VG / HG = 0.98.

[0051] As in Fig. 4 and Fig. As shown in Figure 5, if a maximum distance between the spacer element 13 and a center of the lens element E1 is SL and a distance between the off-axis side surface 134 of the spacer element 13 and the retaining element 15 in a direction perpendicular to the optical axis OA is SGD, the following conditions are met: SL = 7.32 mm; SGD = 0.03 mm; and SL / (SL+SGD) = 0.9959.

[0052] A cross-section parallel to and passing through the optical axis OA is defined. Furthermore, in this cross-section, if the length of the first section R1 in a direction perpendicular to the optical axis OA is RF1 and the length of the second section R2 in a direction perpendicular to the optical axis OA is RF2, the following conditions are met: RF1 = 0.24 mm; RF2 = 0.23 mm; and RF1 / RF2 = 1.04.

[0053] In this embodiment, as shown in Fig. As shown in Figure 5, the retaining section 151 of the retaining element 15 further comprises a stop surface TS1, and the spacer element 13 further comprises a counter-stop surface TS2. The stop surface TS1 is arranged opposite the counter-stop surface TS2, and the distance between the stop surface TS1 and the counter-stop surface TS2 gradually increases in a direction away from the second section R2. Furthermore, the stop surface TS1 and the counter-stop surface TS2 form an angle A1 in the cross-section parallel to and passing through the optical axis OA, and the following condition is met: A1 = 5 degrees.

[0054] If the length of the stop surface TS1 in the cross-section SF is and the length of the counter stop surface TS2 in the cross-section CSF is, the following conditions are met: SF = 0.38 mm; CSF = 0.43 mm; and SF / CSF = 0.88. 2. Design

[0055] See Fig. 7 to Fig. 12. Fig. Figure 7 is a sectional view of an optical lens system according to the second embodiment of the present disclosure. Fig. Figure 8 is an enlarged view of section EL8 in Fig. 7, Fig. Figure 9 is an exploded view of the optical lens system in Fig. 7, Fig. Figure 10 is a cross-sectional view of the optical lens system in Fig. 7, Fig. Figure 11 is an enlarged view of section EL11 in Fig. 10 and Fig. Figure 12 is a top view of a spacer element of the optical lens system according to the second embodiment of the present disclosure. To clearly illustrate the relative arrangement of the components, some components have been omitted or simplified. For example, the details of the lens group are not intended to limit the present disclosure; therefore, the detailed contours of the lens group are not shown in the figures.

[0056] In this embodiment, an optical lens system 2 is provided. The optical lens system 2 has an optical axis OA, and the optical lens system 2 comprises a tube 20, a lens group 21, a spacer element 23, a retaining element 25, a light-blocking element 27, and a damper 29.

[0057] The optical axis OA of the optical lens system 2 passes through the tube 20, and the tube 20 has a first ring-shaped surface CS1 that surrounds the optical axis OA.

[0058] The lens group 21 comprises a plurality of lens elements E0 and E1 arranged sequentially along the optical axis OA. At least one lens element in the lens group 21 is a plastic lens element, and at least one other lens element is a glass lens element. The lens group 21 is arranged along the optical axis OA and is located on the first annular surface CS1 of the tube 20. In particular, the lens elements E0 and E1 in the lens group 21 are arranged sequentially along the optical axis OA, and all lens elements E0 and E1 are located on the first annular surface CS1 of the tube 20. Furthermore, lens element E1 is made of plastic material and has a first section R1 that surrounds the optical axis OA.

[0059] The spacer element 23 is arranged adjacent to the lens element E1 and surrounds the optical axis OA. The spacer element 23 is made of plastic material and has a first surface 231, a second surface 232, an axial side surface 233, and a distal side surface 234. As shown in Fig. 8 and Fig. As shown in Figure 11, the first surface 231 is arranged opposite the second surface 232, and the first section R1 of the lens element E1 is supported on the first surface 231 in a direction parallel to the optical axis OA. The near-axis side surface 233 is connected to the first surface 231 on a side closest to the optical axis OA and to the second surface 232 on a side closest to the optical axis OA, and the near-axis side surface 233 surrounds the optical axis OA and gradually tapers towards the optical axis OA, forming a light-transmitting hole PH.The far-axis side surface 234 is connected to the first surface 231 on the side furthest from the optical axis OA and to the second surface 232 on the side furthest from the optical axis OA, and the far-axis side surface 234 is arranged opposite the near-axis side surface 233.

[0060] In this embodiment, as shown in Fig. Figure 11 shows that the axial side surface 233 of the spacer element 23 has an antireflection surface ARL, and the reflectance of the antireflection surface ARL is lower than the reflectance of the axial side surface 234.

[0061] The tube 20 and the spacer element 23 are positioned in a clearance fit perpendicular to the optical axis OA. Specifically, the first annular surface CS1 of the tube 20 faces the extra-axial side surface 234 of the spacer element 23, and a gap GP is formed between the first annular surface CS1 and the extra-axial side surface 234. Additionally, the gap GP extends from the extra-axial side surface 234 of the spacer element 23 along the first surface 231 towards the optical axis OA. In this embodiment, as shown in Fig. 11 shows that if the distance between the off-axis side surface 234 and the tube 20 in a direction perpendicular to the optical axis OA SG is satisfied, the following condition is met: SG = 0.02 mm.

[0062] The light-blocking element 27 is arranged between the lens element E1 and the spacer element 23, and the light-blocking element 27 surrounds the optical axis OA. Furthermore, the first section R1 of the lens element E1 is indirectly supported on the first surface 231 of the spacer element 23 by the light-blocking element 27 in a direction parallel to the optical axis OA.

[0063] The damper 29 is arranged in the gap GP. In this embodiment, the damper 29 is arranged between the first annular surface CS1 of the tube 20 and the off-axis side surface 234 of the spacer element 23, but the present disclosure is not limited thereto.

[0064] As in Fig. 10 and Fig. As shown in Figure 11, the retaining element 25 is made of metallic material and is fixedly arranged with the tube 20 to maintain a relatively fixed position between the lens element E1 and the tube 20 along the optical axis OA. Additionally, the spacer element 23 is arranged between the lens element E1 and the retaining element 25. The retaining element 25 has a second annular surface CS2 and a second section R2, both of which surround the optical axis OA. The second annular surface CS2 faces the optical axis OA, and the second section R2 is supported on the second surface 232 of the spacer element 23 in a direction parallel to the optical axis OA. Furthermore, the retaining element 25 comprises a base section 250 and a retaining section 251. The base section 250 is fixedly arranged with the tube 20.The retaining section 251 is connected to the base section 250 and extends in the direction of the optical axis OA, and the retaining section 251 has the second section R2. In this embodiment, the gap GP overlaps, as shown in . Fig. 11 shows the second section R2 in a direction parallel to the optical axis OA.

[0065] As in Fig. 11 and Fig. As shown in Figure 12, the first section R1 of the lens element E1 and the second section R2 of the retaining element 25 do not overlap in a direction parallel to the optical axis OA. It should be noted that the first section R1 and the second section R2, which are shown in Figure 12, do not overlap in a direction parallel to the optical axis OA. Fig. 12 are indicated, referring to the positions at which the first section R1 of the lens element E1 and the second section R2 of the retaining element 25 are each projected in a direction parallel to the optical axis OA onto corresponding positions on the spacer element 23.

[0066] If the distance between the first section R1 and the second section R2 in a direction perpendicular to the optical axis OA is VG, the following condition is met: VG = 0.22 mm.

[0067] If the distance between the first section R1 and the second section R2 in the direction perpendicular to the optical axis OA is VG and the distance between the first section R1 and the second section R2 in a direction parallel to the optical axis OA is HG, then the following conditions are met: VG = 0.22 mm; HG = 0.34 mm; and VG / HG = 0.65.

[0068] As in Fig. 10 and Fig. As shown in Figure 11, if a maximum distance between the spacer element 23 and a center of the lens element E1 SL is and the distance between the off-axis side surface 234 of the spacer element 23 and the tube 20 in a direction perpendicular to the optical axis OA SG is the following conditions are met: SL = 7.28 mm; SG = 0.02 mm; and SL / (SL+SG) = 0.9973.

[0069] A cross-section parallel to and passing through the optical axis OA is defined. Furthermore, in this cross-section, if the length of the first section R1 in a direction perpendicular to the optical axis OA is RF1 and the length of the second section R2 in a direction perpendicular to the optical axis OA is RF2, the following conditions are met: RF1 = 0.32 mm; RF2 = 0.13 mm; and RF1 / RF2 = 2.46.

[0070] In this embodiment, as shown in Fig. As shown in Figure 11, the retaining section 251 of the retaining element 25 further comprises a stop surface TS1, and the spacer element 23 further comprises a counter-stop surface TS2. The stop surface TS1 is arranged opposite the counter-stop surface TS2, and the distance between the stop surface TS1 and the counter-stop surface TS2 gradually increases in a direction away from the second section R2. Furthermore, the stop surface TS1 and the counter-stop surface TS2 form an angle A1 in the cross-section parallel to and passing through the optical axis OA, and the following condition is met: A1 = 10 degrees.

[0071] If the length of the stop surface TS1 in the cross-section SF is and the length of the counter stop surface TS2 in the cross-section CSF is, the following conditions are met: SF = 0.23 mm; CSF = 0.19 mm; and SF / CSF = 1.21. 3. Design

[0072] See Fig. 13 to Fig. 18. Fig. Figure 13 is a sectional view of an optical lens system according to the 3rd embodiment of the present disclosure, Fig. Figure 14 is an enlarged view of section EL14 in Fig. 13, Fig. Figure 15 is an exploded view of the optical lens system in Fig. 13, Fig. Figure 16 shows a cross-sectional view of the optical lens system in Fig. 13, Fig. Figure 17 is an enlarged view of section EL17 in Fig. 16, and Fig. Figure 18 is a top view of a spacer element of the optical lens system according to the third embodiment of the present disclosure. To clearly illustrate the relative arrangement of the components, some components have been omitted or simplified. For example, the details of the lens group are not intended to limit the present disclosure; therefore, the detailed contours of the lens group are not shown in the figures.

[0073] In this embodiment, an optical lens system 3 is provided. The optical lens system 3 has an optical axis OA, and the optical lens system 3 comprises a tube 30, a lens group 31, a spacer element 33, a retaining element 35, and a light-blocking element 37.

[0074] The optical axis OA of the optical lens system 3 passes through the tube 30, and the tube 30 has a first ring-shaped surface CS1 that surrounds the optical axis OA.

[0075] The lens group 31 comprises a plurality of lens elements E0 and E1 arranged sequentially along the optical axis OA. At least one lens element in the lens group 31 is a plastic lens element, at least one other lens element is a glass lens element, and the lens group 31 is arranged along the optical axis OA and on the first annular surface CS1 of the tube 30. In particular, the lens elements E0 and E1 in the lens group 31 are arranged sequentially along the optical axis OA, and the lens elements E0 and E1 are all located on the first annular surface CS1 of the lens tube 30. Furthermore, the lens element E1 is made of plastic material and has a first section R1 that surrounds the optical axis OA.

[0076] The spacer element 33 is arranged adjacent to the lens element E1 and surrounds the optical axis OA. The spacer element 33 is made of plastic material and has a first surface 331, a second surface 332, an axial side surface 333, and an axial side surface 334. As shown in Fig. 14 and Fig. As shown in Figure 17, the first surface 331 is arranged opposite the second surface 332, and the first section R1 of the lens element E1 is supported on the first surface 331 in a direction parallel to the optical axis OA. The near-axis side surface 333 is connected to the first surface 331 on a side closest to the optical axis OA and to the second surface 332 on a side closest to the optical axis OA. The near-axis side surface 333 surrounds the optical axis OA and gradually tapers towards the optical axis OA, forming a light-transmitting hole PH.The off-axis side surface 334 is connected to the first surface 331 on a side that is furthest from the optical axis OA, and to the second surface 332 on a side that is furthest from the optical axis OA, and the off-axis side surface 334 is arranged opposite the near-axis side surface 333.

[0077] The tube 30 and the spacer element 33 are positioned in a clearance fit perpendicular to the optical axis OA. Specifically, the first annular surface CS1 of the tube 30 faces the extra-axial side surface 334 of the spacer element 33, and a gap GP is formed between the first annular surface CS1 and the extra-axial side surface 334. Additionally, the gap GP extends from the extra-axial side surface 334 of the spacer element 33 along the first surface 331 towards the optical axis OA. In this embodiment, as shown in Fig. 17 shows that if the distance between the side surface 334 far from the axis and the tube 30 in a direction perpendicular to the optical axis OA SG is satisfied, the following condition is met: SG = 0.03 mm.

[0078] As in Fig. 16 and Fig. As shown in Figure 17, the retaining element 35 is made of a metallic material and is fixedly arranged with the tube 30 to maintain a relatively fixed position between the lens element E1 and the tube 30 along the optical axis OA. Additionally, the spacer element 33 is arranged between the lens element E1 and the retaining element 35. The retaining element 35 has a second annular surface CS2 and a second section R2, both of which surround the optical axis OA. The second annular surface CS2 faces at least partially towards the optical axis OA, and the second section R2 is supported on the second surface 332 of the spacer element 33 in a direction parallel to the optical axis OA. In this embodiment, the second annular surface CS2 of the retaining element 35 rests against the tube 30, is mounted with the tube 30, and rests against the second surface 332 of the spacer element 33.

[0079] Furthermore, the retaining element 35 comprises a base section 350 and a retaining section 351. The base section 350 is fixedly arranged with the tube 30. The retaining section 351 is connected to the base section 350 and extends in the direction of the optical axis OA, and the retaining section 351 has the second section R2. In this embodiment, the gap GP overlaps, as shown in Fig. 17 shows the second section R2 in a direction parallel to the optical axis OA.

[0080] The light-blocking element 37 is arranged between the spacer element 33 and the retaining element 35, and the light-blocking element 37 surrounds the optical axis OA. Furthermore, the second section R2 of the retaining element 35 is indirectly supported via the light-blocking element 37 in a direction parallel to the optical axis OA on the second surface 332 of the spacer element 33.

[0081] As in Fig. 17 and Fig. As shown in Figure 18, the first section R1 of the lens element E1 and the second section R2 of the retaining element 35 do not overlap in a direction parallel to the optical axis OA. It should be noted that the first section R1 and the second section R2, which are shown in Figure 18, do not overlap in a direction parallel to the optical axis OA. Fig. 18 are indicated, referring to the positions at which the first section R1 of the lens element E1 and the second section R2 of the retaining element 35 are each projected in a direction parallel to the optical axis OA to corresponding positions on the spacer element 33.

[0082] If the distance between the first section R1 and the second section R2 in a direction perpendicular to the optical axis OA is VG, the following condition is met: VG = 0.06 mm.

[0083] If the distance between the first section R1 and the second section R2 in the direction perpendicular to the optical axis OA is VG and the distance between the first section R1 and the second section R2 in a direction parallel to the optical axis OA is HG, then the following conditions are met: VG = 0.06 mm; HG = 0.36 mm; and VG / HG = 0.17.

[0084] As in Fig. 16 and Fig. As shown in Figure 17, if the maximum distance between the spacer element 33 and the center of the lens element E1 is SL and the distance between the off-axis side surface 334 of the spacer element 33 and the tube 30 in the direction perpendicular to the optical axis is OA SG, the following conditions are met: SL = 4.13 mm; SG = 0.03 mm; and SL / (SL+SG) = 0.9928.

[0085] A cross-section parallel to and passing through the optical axis OA is defined. Furthermore, in this cross-section, if the length of the first section R1 in a direction perpendicular to the optical axis OA is RF1 and the length of the second section R2 in a direction perpendicular to the optical axis OA is RF2, the following conditions are met: RF1 = 0.26 mm; RF2 = 0.24 mm; and RF1 / RF2 = 1.08. 4. Design

[0086] See Fig. 19 to Fig. 24. Fig. 19 is a section of an optical lens system according to the 4th embodiment of the present disclosure, Fig. 20 is an enlarged view of section EL20 in Fig. 19, Fig. Figure 21 is an exploded view of the optical lens system in Fig. 19, Fig. Figure 22 is a cross-sectional view of the optical lens system in Fig. 19, Fig. 23 is an enlarged view of section EL23 in Fig. 22 and Fig. Figure 24 is a top view of a spacer element of the optical lens system according to the fourth embodiment of the present disclosure. To clearly illustrate the relative arrangement of the components, some components have been omitted or simplified. For example, the details of the lens group are not intended to limit the present disclosure; therefore, the detailed contours of the lens group are not shown in the figures.

[0087] In this embodiment, an optical lens system 4 is provided. The optical lens system 4 has an optical axis OA and comprises a tube 40, a lens group 41, a spacer element 43, and a retaining element 45.

[0088] The optical axis OA of the optical lens system 4 passes through the tube 40, and the tube 40 has a first ring-shaped surface CS1 that surrounds the optical axis OA.

[0089] The lens group 41 comprises a plurality of lens elements E0 and E1 arranged sequentially along the optical axis OA. At least one lens element in the lens group 41 is a plastic lens element, at least one other lens element is a glass lens element, and the lens group 41 is arranged along the optical axis OA and on the first annular surface CS1 of the tube 40. In particular, the lens elements E0 and E1 in the lens group 41 are arranged sequentially along the optical axis OA, and the lens elements E0 and E1 are all located on the first annular surface CS1 of the tube 40. Furthermore, the lens element E1 is made of plastic material and has a first section R1 that surrounds the optical axis OA.

[0090] The spacer element 43 is arranged adjacent to the lens element E1 and surrounds the optical axis OA. The spacer element 43 is made of plastic material and has a first surface 431, a second surface 432, an axial side surface 433, and a distal side surface 434. As shown in Fig. 20 and Fig. As shown in Figure 23, the first surface 431 is arranged opposite the second surface 432, and the first section R1 of the lens element E1 is supported on the first surface 431 in a direction parallel to the optical axis OA. The near-axis side surface 433 is connected to the first surface 431 on a side closest to the optical axis OA and to the second surface 432 on a side closest to the optical axis OA, and the near-axis side surface 433 surrounds the optical axis OA and gradually tapers towards the optical axis OA, forming a light-transmitting hole PH.The far-axis side surface 434 is connected to the first surface 431 on a side that is furthest from the optical axis OA, and to the second surface 432 on a side that is furthest from the optical axis OA, and the far-axis side surface 434 is arranged opposite the near-axis side surface 433.

[0091] In this embodiment, as shown in Fig. 23 shows that the axial side surface 433 of the spacer element 43 has an antireflection surface ARL, and a reflectance of the antireflection surface ARL is less than a reflectance of the axial side surface 434.

[0092] The tube 40 and the spacer element 43 are positioned in a clearance fit perpendicular to the optical axis OA. Specifically, the first annular surface CS1 of the tube 40 faces the extra-axial side surface 434 of the spacer element 43, and a gap GP is formed between the first annular surface CS1 and the extra-axial side surface 434. Additionally, the gap GP extends from the extra-axial side surface 434 of the spacer element 43 along the second surface 432 towards the optical axis OA. In this embodiment, as in Fig. 23 shows that if the distance between the off-axis side surface 434 and the tube 40 in a direction perpendicular to the optical axis OA SG is satisfied, the following condition is met: SG = 0.02 mm.

[0093] As in Fig. 22 and Fig. As shown in Figure 23, the retaining element 45 is made of a metallic material and is fixedly arranged with the tube 40 to maintain a relatively fixed position between the lens element E1 and the tube 40 along the optical axis OA. Additionally, the spacer element 43 is arranged between the lens element E1 and the retaining element 45. The retaining element 45 has a second annular surface CS2 and a second section R2, both of which surround the optical axis OA. The second annular surface CS2 faces at least partially towards the optical axis OA, and the second section R2 is supported on the second surface 432 of the spacer element 43 in a direction parallel to the optical axis OA. In this embodiment, the second annular surface CS2 of the retaining element 45 abuts the tube 40, is mounted with the tube 40, and rests against the second surface 432 of the spacer element 43.

[0094] Furthermore, the retaining element 45 comprises a base section 450 and a retaining section 451. The base section 450 is fixedly arranged with the tube 40. The retaining section 451 is connected to the base section 450 and extends in the direction of the optical axis OA, the retaining section 451 having the second section R2. In this embodiment, the gap GP overlaps, as shown in Fig. Figure 23 shows the first section R1 in a direction parallel to the optical axis OA.

[0095] As in Fig. 23 and Fig. As shown in Figure 24, the first section R1 of the lens element E1 and the second section R2 of the retaining element 45 do not overlap in a direction parallel to the optical axis OA. It should be noted that the first section R1 and the second section R2 are Fig. 24 refer to the positions where the first section R1 of the lens element E1 and the second section R2 of the holding element 45 are projected in a direction parallel to the optical axis OA to corresponding positions on the spacer element 43.

[0096] If the distance between the first section R1 and the second section R2 in a direction perpendicular to the optical axis OA is VG, the following condition is met: VG = 0.02 mm.

[0097] If the distance between the first section R1 and the second section R2 in a direction perpendicular to the optical axis OA is VG and a distance between the first section R1 and the second section R2 in a direction parallel to the optical axis OA is HG, then the following conditions are met: VG = 0.02 mm; HG = 0.31 mm; and VG / HG = 0.06.

[0098] As in Fig. 22 and Fig. Figure 23 shows that if the maximum distance between the spacer element 43 and the center of the lens element E1 is SL and the distance between the off-axis side surface 434 of the spacer element 43 and the tube 40 in the direction perpendicular to the optical axis is OA SG, the following conditions are met: SL = 5.74 mm; SG = 0.02 mm; and SL / (SL+SG) = 0.9965.

[0099] A cross-section parallel to and passing through the optical axis OA is defined. Furthermore, in this cross-section, if the length of the first section R1 in a direction perpendicular to the optical axis OA is RF1 and the length of the second section R2 in a direction perpendicular to the optical axis OA is RF2, the following conditions are met: RF1 = 0.1 mm; RF2 = 0.21 mm; and RF1 / RF2 = 0.48.

[0100] In this embodiment, the retaining section 451 of the retaining element 45, as shown in Fig. Figure 23 shows a stop surface TS1, and the spacer element 43 further comprises a counter-stop surface TS2. The stop surface TS1 is arranged opposite the counter-stop surface TS2, and the distance between the stop surface TS1 and the counter-stop surface TS2 gradually increases in a direction away from the second section R2. Furthermore, the stop surface TS1 and the counter-stop surface TS2 form an angle A1 in the section parallel to and passing through the optical axis OA, and the following condition is met: A1 = 6 degrees.

[0101] If the length of the stop surface TS1 in the cross-section SF is and the length of the counter stop surface TS2 in the cross-section CSF is, the following conditions are met: SF = 0.23 mm; CSF = 0.28 mm; and SF / CSF = 0.82.

[0102] In this embodiment, the spacer element 43 is as shown in Fig. Figure 24 shows a ring-shaped element, but the present revelation is not limited to it.

[0103] See, for example, Fig. 25 and Fig. 26, where Fig. 25 a top view of a spacer element of an optical lens system according to a configuration of the present disclosure is and Fig. 26 is a top view of a spacer element of an optical lens system according to another configuration of the present disclosure.

[0104] In the Fig. In the configuration shown in Figure 25, the spacer element 53 is an arc-shaped element with a single cutting edge, and the shape of the spacer element 53 can, for example, be designed to correspond to a lens element with a single cutting edge, but the present disclosure is not limited thereto.

[0105] In the Fig. In the configuration shown in Figure 26, the spacer element 63 is an arc-shaped element with a pair of cutting edges, and the shape of the spacer element 63 can, for example, be designed to correspond to a lens element with a pair of cutting edges, but the disclosure is not limited thereto. 5. Design

[0106] See Fig. 27 and Fig. 28. Fig. Figure 27 is a perspective view of an electronic device according to the 5th embodiment of the present disclosure, and Fig. Figure 28 is another perspective view of the electronic device in Fig. 27.

[0107] In this embodiment, the electronic device 200 is a smartphone comprising a plurality of camera modules 200a, 200b, 200c and 200d, a flash module 201, a focus assist module 202, an image signal processor 203, a display module (user interface) 204 and an image software processor (not shown).

[0108] These camera modules comprise an ultra-wide-angle camera module 200a, a high-pixel camera module 200b, a telephoto camera module 200c, and a telephoto camera module 200d. Furthermore, the telephoto camera module 200d comprises the optical lens system of the present disclosure and an image sensor (not shown), wherein the image sensor is arranged on an image surface of the optical lens system, although the present disclosure is not limited thereto. Each of the camera modules 200a, 200b, and 200c may comprise the optical lens system of the present disclosure.

[0109] The image captured by the ultra-wide-angle camera module 200a has the characteristic that multiple objects are depicted. Fig. Image 29 is taken by the ultra-wide-angle camera module 200a.

[0110] The image captured by the high-pixel camera module 200b has high resolution and low distortion, and the high-pixel camera module 200b can capture part of the image in Fig. Record 29. Fig. 30 is an image taken by the high-pixel camera module 200b.

[0111] The image captured by the Tele Camera Module 200c or the Tele Camera Module 200d is characterized by high optical magnification, and the Tele Camera Module 200c or the Tele Camera Module 200d can capture part of the image in Fig. Record 30. Fig. 31 is an image taken by the Tele Camera Module 200c or the Tele Camera Module 200d.

[0112] When a user takes pictures of an object, the light rays are focused in the ultra-wide-angle camera module 200a, the high-resolution camera module 200b, the telephoto camera module 200c, or the telephoto camera module 200d to create images, and the flash module 201 is activated for additional illumination. The focus assist module 202 detects the distance of the object being photographed to achieve fast autofocus. The image signal processor 203 is designed to optimize the captured image to improve image quality and the zoom function. The light beam emitted by the focus assist module 202 can be either conventional infrared light or laser light.The display module 204 can include a touchscreen, allowing the user to interact with it to adjust the viewing angle and switch between different camera modules. The image software processor has several functions for capturing images and performing image processing. Alternatively, the user can capture images using a physical button. The image processed by the image software processor can be displayed on the display module 204. 6. Design

[0113] See Fig. 32, which is a perspective view of an electronic device according to the 6th embodiment of the present disclosure.

[0114] In this embodiment, the electronic device 300 is a smartphone comprising a camera module 300a, a camera module 300b, a camera module 300c, a camera module 300d, a camera module 300e, a camera module 300f, a camera module 300g, a camera module 300h, a camera module 300i, a flash module 301, an image signal processor, a display module, and an image software processor (not shown). The camera modules 300a, 300b, 300c, 300d, 300e, 300f, 300g, 300h, and 300i are arranged on the same side of the electronic device 300, while the display module is arranged on the opposite side of the electronic device 300. Furthermore, the camera module 300c comprises the optical lens system of the present disclosure and an image sensor (not shown), and the image sensor is arranged on an image surface of the optical lens system.

[0115] The camera module 300a is a telephoto camera module with beam deflection, the camera module 300b is a telephoto camera module with beam deflection, the camera module 300c is a telephoto camera module, the camera module 300d is a telephoto camera module, the camera module 300e is a wide-angle camera module, the camera module 300f is a wide-angle camera module, the camera module 300g is an ultra-wide-angle camera module, the camera module 300h is a ToF camera module (Time of Flight) and the camera module 300i is an ultra-wide-angle camera module. In this embodiment, the camera module 300i, the camera module 300a, the camera module 300b, the camera module 300c, the camera module 300d, the camera module 300e, the camera module 300f and the camera module 300g have different fields of view, so that the electronic device can have 300 different magnification ratios to meet the requirements of the optical zoom function.Furthermore, camera module 300a and camera module 300b are telephoto camera modules with a light deflection configuration. Additionally, camera module 300h can determine depth information of the imaged object. In this embodiment, the electronic device 300 comprises multiple camera modules 300a, 300b, 300c, 300d, 300e, 300f, 300g, 300h, and 300i, but the present disclosure is not limited to the number and arrangement of the camera modules. When a user takes pictures of an object, the light rays in the camera module 300a, camera module 300b, camera module 300c, camera module 300d, camera module 300e, camera module 300f, camera module 300g, camera module 300h or camera module 300i are focused to produce one or more images, and the flash module 301 is activated for light support.Furthermore, the subsequent processes are carried out in a similar manner to those in the embodiments mentioned above, so the details in this regard are not specified again. 7. Design

[0116] See Fig. 33 to Fig. 35. Fig. Figure 33 is a perspective view of an electronic device according to the 7th embodiment of the present disclosure, Fig. Figure 34 shows a side view of the electronic device in Fig. 33 and Fig. 35 is a top view of the electronic device in Fig. 33.

[0117] In this embodiment, the electronic device 400 is a motor vehicle. The electronic device 400 comprises a plurality of motor vehicle camera modules 400a, and each of the camera modules 400a comprises the optical lens system of the present disclosure and an image sensor arranged on an image surface of the optical lens system. The camera modules 400a can, for example, serve as panoramic car cameras, dashboard cameras, and vehicle reversing cameras.

[0118] As in Fig. As shown in Figure 33, the camera modules 400a are arranged around the vehicle to capture peripheral images of the vehicle, which is advantageous for acquiring external traffic information to achieve an autopilot function. Furthermore, the image software processor can stitch the peripheral images together to form a panoramic image that the driver can use to check all corners around the vehicle, which is beneficial for parking and driving.

[0119] As in Fig. As shown in Figure 34, the 400a camera modules are, for example, arranged on the lower section of the side mirrors. The field of view of the 400a camera modules can be from 40 degrees to 90 degrees to capture images in areas on the left and right lanes.

[0120] As in Fig. As shown in Figure 35, the camera modules 400a can, for example, also be arranged on the lower part of the side mirrors and inside the front and rear windscreens to provide the driver with external information and also to offer more viewing angles to reduce blind spots and thereby improve driving safety. 8. Design

[0121] See Fig. 36, which shows a perspective view of an electronic device according to the 8th embodiment of the present disclosure.

[0122] In this embodiment, the electronic device 500 is an unmanned aerial vehicle (UAV), which can be, for example, a delivery drone equipped with a storage compartment. The electronic device 500 comprises a front camera module 500a and a side camera module 500b. The front camera module 500a and the side camera module 500b can each comprise the optical lens system of the present disclosure and an image sensor arranged on an image surface of the optical lens system. The front camera module 500a and the side camera module 500b provide the electronic device 500 with reliable optical imaging quality and environmental resistance. The electronic device 500 is shown by way of example with two camera modules 500a and 500b; however, the number and arrangement of the camera modules are not intended to limit the present disclosure.

[0123] The smartphones, panoramic car cameras, dashboard cameras, reversing cameras, and unmanned aerial vehicles in the embodiments serve only as examples illustrating the optical lens system and camera module of the present disclosure installed in an electronic device, and the present disclosure is not limited to such devices. The optical lens system and camera module can optionally be incorporated into optical systems with movable focus. Furthermore, the optical lens system and camera module are characterized by good aberration and high image quality and can be used for 3D imaging (three-dimensional imaging) in products such as digital cameras, mobile devices, digital tablets, smart TVs, network surveillance devices, multi-camera systems, image recognition systems, motion sensors, wearable devices, and other electronic imaging devices.

[0124] The foregoing description serves for clarification and has been described with reference to specific embodiments. It should be noted that the present disclosure shows different data for the various embodiments; however, the data for the different embodiments were obtained from experiments. The embodiments were selected and described to best illustrate the principles of the disclosure and their practical applications, so that other skilled persons can make the best possible use of the disclosure and the various embodiments with different modifications suitable for their respective uses. The embodiments shown above and the accompanying drawings are exemplary and are not to be understood as exhaustive or as limiting the scope of the present disclosure to the forms exactly disclosed. In light of the foregoing, many modifications and variations are possible.

Claims

[1] Optical lens system (1) with an optical axis (OA), wherein the optical axis (OA) comprises: a tube (10) wherein the optical axis (OA) passes through the tube (10); a lens element (E1) arranged along the optical axis (OA) and located in the tube (10), wherein the lens element (E1) has a first section (R1) and the first section (R1) surrounds the optical axis (OA); a spacer element (13) which is arranged adjacent to the lens element (E1) and surrounds the optical axis (OA), and wherein the spacer element (13) has: a first surface (131), wherein the first section (R1) of the lens element (E1) is supported on the first surface (131) in a direction parallel to the optical axis (OA); a second surface (132) which is arranged opposite the first surface (131); an axial side surface (133) connected to the first surface (131) on a side closest to the optical axis (OA) and to the second surface (132) on a side closest to the optical axis (OA), wherein the axial side surface (133) surrounds the optical axis (OA) and gradually tapers towards the optical axis (OA), where it forms a light-transmitting hole (PH); and a side surface (134) farther from the axis, which is connected to the first surface (131) on a side that is furthest from the optical axis (OA), and is connected to the second surface (132) on a side that is furthest from the optical axis (OA); and a retaining element (15) which is fixedly arranged with the tube (10) to maintain a relatively fixed position between the lens element (E1) and the tube (10) along the optical axis (OA), wherein the spacer element (13) is arranged between the lens element (E1) and the retaining element (15) and the retaining element (15) has: a second section (R2) which is supported on the second surface (132) in a direction parallel to the optical axis (OA), and wherein the second section (R2) surrounds the optical axis (OA); where the first section (R1) and the second section (R2) do not overlap in a direction parallel to the optical axis (OA). [2] Optical lens system (1) according to claim 1, wherein the retaining element (15) comprises a retaining section (151) extending in a direction to the optical axis (OA), and the retaining section (151) has the second section (R2). [3] Optical lens system (1) according to claim 2, wherein a distance between the first section (R1) and the second section (R2) is VG in a direction perpendicular to the optical axis (OA) and the following condition is met: 0.01 mm≤VG≤1.2 mm. [4] Optical lens system (1) according to claim 3, wherein the distance between the first section (R1) and the second section (R2) is VG in the direction perpendicular to the optical axis (OA), a distance between the first section (R1) and the second section (R2) is HG in a direction parallel to the optical axis (OA) and the following condition is met: 0.03≤VG / HG≤3.

1. [5] Optical lens system (1) according to claim 2, wherein the retaining element (15) further comprises a barbed structure (152) which is spaced apart from the retaining section (151), and the barbed structure (152) is arranged closer to the optical axis (OA) than the side surface (134) of the spacer element (13) farther from the axis; and wherein the spacer element (13) is arranged between the barbed structure (152) and the retaining section (151). [6] Optical lens system (1) according to claim 5, wherein the barb structure (152) faces the lens element (E1) and is spaced apart from the lens element (E1), and wherein the barb structure (152) is further away from the optical axis (OA) than the lens element (E1). [7] Optical lens system (1) according to claim 2, wherein a cross-section parallel to and through the optical axis (OA) is defined; and wherein in the cross-section a length of the first section (R1) in a direction perpendicular to the optical axis (OA) is RF1, a length of the second section (R2) in a direction perpendicular to the optical axis (OA) is RF2 and the following condition is satisfied: 0.1≤RF1 / RF2≤5.

1. [8] Optical lens system (1) according to claim 7, wherein in the cross-section the length of the first section (R1) in the direction perpendicular to the optical axis (OA) is RF1, the length of the second section (R2) in the direction perpendicular to the optical axis (OA) is RF2 and the following condition is met: 0.2≤RF1 / RF2≤2.

5. [9] Optical lens system (1) according to claim 1, wherein the spacer element (13) is made of plastic material. [10] Optical lens system (1) according to claim 1, wherein the retaining element (15) is made of a metallic material. [11] Optical lens system (1) according to claim 1, further comprising a lens group (11), wherein the lens group (11) comprises the lens element (E1) and the lens group (11) comprises at least one plastic lens element and at least one glass lens element. [12] Optical lens system (1) according to claim 11, wherein the lens element (E1) is made of plastic material. [13] Optical lens system (1) according to claim 1, wherein the spacer element (13) and at least one of the tube (10) and the retaining element (15) are in a clearance fit with each other in a direction perpendicular to the optical axis (OA). [14] Optical lens system (1) according to claim 13, wherein a gap (GP) is formed between the off-axis side surface (134) and at least one of the tube (10) and the retaining element (15), and the gap (GP) extends from the off-axis side surface (134) in the direction of the optical axis (OA) along at least one of the first surface (131) and the second surface (132); and wherein the slit (GP) overlaps at least one of the first section (R1) and the second section (R2) in a direction parallel to the optical axis (OA). (OA). [15] Optical lens system (2) according to claim 14, further comprising a damper (29) arranged in the gap (GP). [16] Optical lens system (2) according to claim 1, further comprising a light-blocking element (27) arranged between the lens element (E1) and the spacer element (23), wherein the light-blocking element (27) surrounds the optical axis (OA). [17] Optical lens system (3) according to claim 1, further comprising a light-blocking element (37) arranged between the spacer element (33) and the retaining element (35), wherein the light-blocking element (37) surrounds the optical axis (OA). [18] Optical lens system (2) according to claim 1, wherein the axial side surface (233) of the spacer element (23) has an antireflection surface (ARL) and the reflectance of the antireflection surface (ARL) is lower than the reflectance of the axial side surface (234). [19] Optical lens system (1) according to claim 2, wherein the retaining section (151) further comprises a stop surface (TS1), the spacer element (13) further comprises a counter-stop surface (TS2), the stop surface (TS1) and the counter-stop surface (TS2) are arranged opposite each other, and the distance between the counter-stop surface (TS2) and the stop surface (TS1) gradually increases in a direction away from the second section (R2); and wherein a cross-section is defined parallel to and passing through the optical axis (OA), the stop surface (TS1) and the counter stop surface (TS2) form an angle A1 in the cross-section and the following condition is met: A1≤20 degrees. [20] Optical lens system (1) according to claim 19, wherein a length of the stop surface (TS1) in the cross-section SF is, a length of the counter-stop surface (TS2) in the cross-section CSF is, and the following condition is met: 0.4≤SF / CSF≤2.

5. [21] Camera module (200a), comprising: the optical lens system (1) according to claim 1; and an image sensor arranged on an image surface of the optical lens system (1). [22] Electronic device (200) comprising: the camera module (200a) according to claim 21. [23] Optical lens system (1) with an optical axis (OA), wherein the optical lens (1) comprises: a tube (10) wherein the optical axis (OA) passes through the tube (10) and the tube (10) has a first ring-shaped surface (CS1) surrounding the optical axis (OA); a lens element (E1) arranged along the optical axis (OA) and located on the first annular surface (CS1), wherein the lens element (E1) has a first section (R1) and the first section (R1) surrounds the optical axis (OA); a spacer element (13) which is arranged adjacent to the lens element (E1) and surrounds the optical axis (OA), and wherein the spacer element (13) has: a first surface (131), wherein the first section (R1) of the lens element (E1) is supported on the first surface (131) in a direction parallel to the optical axis (OA); a second surface (132) which is arranged opposite the first surface (131); an axial side surface (133) connected to the first surface (131) on a side closest to the optical axis (OA) and to the second surface (132) on a side closest to the optical axis (OA), wherein the axial side surface (133) surrounds the optical axis (OA) and gradually tapers towards the optical axis (OA), where it forms a light-transmitting hole (PH); and a side surface (134) farther from the axis, which is connected to the first surface (131) on a side that is furthest from the optical axis (OA), and is connected to the second surface (132) on a side that is furthest from the optical axis (OA); and a retaining element (15) which is fixedly arranged with the tube (10) to maintain a relatively fixed position between the lens element (E1) and the tube (10) along the optical axis (OA), wherein the spacer element (13) is arranged between the lens element (E1) and the retaining element (15) and the retaining element (15) has: a second ring-shaped surface (CS2) surrounding the optical axis (OA); and a second section (R2) which is supported on the second surface (132) in a direction parallel to the optical axis (OA), and wherein the second section (R2) surrounds the optical axis (OA); wherein a gap (GP) is formed between the off-axis side surface (134) and at least one of the first annular surface (CS1) and the second annular surface (CS2), and the gap (GP) extends from the off-axis side surface (134) in the direction of the optical axis (OA) along at least one of the first surface (131) and the second surface (132) (132), wherein the first annular surface (CS1) and / or the second annular surface (CS2), which together with the off-axis side surface (134) form the gap (GP), are facing the off-axis side surface (134); and where the slit (GP) overlaps with the first section (R1) and the second section (R2) in a direction parallel to the optical axis (OA). [24] Optical lens system (1) according to claim 23, wherein the retaining element (15) comprises a retaining section (151) extending in a direction to the optical axis (OA), and the retaining section (151) has the second section (R2). [25] Optical lens system (1) according to claim 24, wherein the retaining element (15) further comprises a barbed structure (152) which is spaced apart from the retaining section (151), and the barbed structure (152) is arranged closer to the optical axis (OA) than the side surface (134) farther from the axis of the spacer element (13); and wherein the spacer element (13) is arranged between the barbed structure (152) and the holding section (151). [26] Optical lens system (1) according to claim 25, wherein the barb structure (152) faces the lens element (E1) and is spaced apart from the lens element (E1), and the barb structure (152) is arranged further away from the optical axis (OA) than the lens element (E1). [27] Optical lens system (2) according to claim 23, wherein the off-axis side surface (234) faces the tube (20), the distance between the off-axis side surface (234) and the tube (20) is perpendicular to the optical axis (OA) SG and the following condition is met: 0.007 mm≤SG≤0.06 mm. [28] Optical lens system (2) according to claim 27, wherein a maximum distance between the spacer element (23) and a center of the lens element (E1) is SL, the distance between the off-axis side surface (234) and the tube (20) in the direction perpendicular to the optical axis (OA) is SG and the following condition is met: 0.9901≤SL / (SL+SGD)≤0.9999. [29] Optical lens system (1) according to claim 23, wherein the off-axis side surface (134) faces the retaining element (15); and wherein a distance between the off-axis side surface (134) and the retaining element (15) in a direction perpendicular to the optical axis (OA) is SGD and the following condition is met: 0.007 mm≤SGD≤0.06 mm. [30] Optical lens system (1) according to claim 29, wherein a maximum distance between the spacer element (13) and a center of the lens element (E1) is SL, the distance between the off-axis side surface (134) and the retaining element (15) in the direction perpendicular to the optical axis (OA) is SGD and the following condition is met: 0.9901≤SL / (SL+SGD)≤0.9999. [31] Optical lens system (1) according to claim 23, wherein the spacer element (13) is made of plastic material. [32] Optical lens system (1) according to claim 23, wherein the retaining element (15) is made of a metallic material. [33] Optical lens system (1) according to claim 23, further comprising a lens group (11), wherein the lens group (11) comprises the lens element (E1) and the lens group (11) contains at least one plastic lens element and at least one glass lens element. [34] Optical lens system (1) according to claim 33, wherein the lens element (E1) is made of plastic material. [35] Optical lens system (2) according to claim 23, further comprising a damper (29) arranged in the gap (GP). [36] Optical lens system (2) according to claim 23, further comprising a light-blocking element (27) arranged between the lens element (E1) and the spacer element (23), wherein the light-blocking element (27) surrounds the optical axis (OA). [37] Optical lens system (3) according to claim 23, further comprising a light-blocking element (37) arranged between the spacer element (33) and the retaining element (35), wherein the light-blocking element (37) surrounds the optical axis (OA). [38] Optical lens system (2) according to claim 23, wherein the axial side surface (233) of the spacer element (23) has an antireflection surface (ARL) and the reflectance of the antireflection surface (ARL) is lower than the reflectance of the axial side surface (234). [39] Optical lens system (1) according to claim 24, wherein the retaining section (151) further comprises a stop surface (TS1), the spacer element (13) further comprises a counter-stop surface (TS2), the stop surface (TS1) and the counter-stop surface (TS2) are arranged opposite each other, and a distance between the counter-stop surface (TS2) and the stop surface (TS1) gradually increases in a direction away from the second section (R2); and wherein a cross-section parallel to and through the optical axis (OA) is defined, the stop surface (TS1) and the counter-stop surface (TS2) form an angle A1 in the cross-section, and the following condition is met: A1 ≤ 20 degrees. [40] Camera module (200a), comprising: the optical lens system (1) according to claim 23; and an image sensor arranged on an image surface of the optical lens system (1). [41] Electronic device (200) comprising: the camera module (200a) according to claim 40.

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