Optical system assembly

Abstract

The present application discloses an optical system assembly. The optical system assembly comprises a lens set, a plurality of spacers and a lens barrel for accommodating the lens set and the plurality of spacers. The lens set comprises, in order from the object side to the image side along the optical axis, a first lens having optical power, a second lens, a third lens, a fourth lens and a fifth lens, wherein the fourth lens has positive optical power, the fifth lens has negative optical power, the radii of curvature of the object side surface and the image side surface of the fifth lens are both greater than zero; at least one spacer comprises a fourth spacer located on the image side of the fourth lens and partially in contact with the image side surface of the fourth lens. The optical system assembly satisfies: -5 < d0m / f5 < 0, 0 < D0m / R10 < 15 and 0 mm < R9 x (D4s + d4s) / f4 < 33 mm.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of optical elements, in particular to an optical system assembly. BACKGROUND

[0002] In recent years, with the continuous updating and iteration of mobile electronic devices, the related industries have been continuously optimized and upgraded, such as the most representative mobile phone industry. At the same time, with the continuous optimization and upgrading of the mobile phone industry, the optical system assembly mounted on the mobile phone is continuously iterated and upgraded, and the camera technology of the mobile phone has become one of the main factors to improve the competitiveness of the mobile phone.

[0003] However, in the optical system assembly, there are often many stray light phenomena. In this case, too much stray light will seriously reduce the imaging quality of the optical system assembly. Therefore, how to improve the imaging quality of the optical system assembly is crucial. SUMMARY

[0004] The present application provides an optical system assembly, which comprises, in order from the object side to the image side along the optical axis, a lens group, at least one spacer, and a lens barrel for accommodating the lens group and the at least one spacer. The lens group comprises, in order from the object side to the image side along the optical axis, a first lens having optical power, a second lens, a third lens, a fourth lens, and a fifth lens, wherein the fourth lens has positive optical power, the fifth lens has negative optical power, and the curvature radii of the object side surface and the image side surface of the fifth lens are both greater than zero. The at least one spacer comprises a fourth spacer located on the image side of the fourth lens and partially in contact with the image side surface of the fourth lens. The optical system assembly can satisfy -5 < d0m / f5 < 0, 0 < D0m / R10 < 15, and 0 mm < R9 x (D4s + d4s) / f4 < 33 mm, wherein f4 is the effective focal length of the fourth lens, f5 is the effective focal length of the fifth lens, R9 is the curvature radius of the object side surface of the fifth lens, R10 is the curvature radius of the image side surface of the fifth lens, d4s is the inner diameter of the object side surface of the fourth spacer, D4s is the outer diameter of the object side surface of the fourth spacer, D0m is the outer diameter of the image side end of the lens barrel, and d0m is the inner diameter of the image side end of the lens barrel.

[0005] In one embodiment, at least one of the mirror surfaces from the object side surface of the first lens to the image side surface of the fifth lens is a non-spherical mirror surface.

[0006] In one embodiment, the at least one spacer further includes a first spacer located on the image side of the first lens and partially in contact with the image side surface of the first lens. The optical system assembly can satisfy: Semi-FOV > 45° and 0 < TAN(Semi-FOV) x f / (D1s-d1s) < 15, where f is the total effective focal length of the optical system assembly, Semi-FOV is half of the maximum field angle of view of the optical system assembly, d1s is the inner diameter of the object side surface of the first spacer, and D1s is the outer diameter of the object side surface of the first spacer.

[0007] In one embodiment, the optical system assembly can satisfy: -55 < R2 / d0s-f1 / EP01 < 0, where f1 is the effective focal length of the first lens, EP01 is the separation distance in the direction along the optical axis from the object side end of the lens barrel to the object side surface of the first spacer, R2 is the radius of curvature of the image side surface of the first lens, and d0s is the inner diameter of the object side end of the lens barrel.

[0008] In one embodiment, the optical system assembly can satisfy: 0 < f2 / d1m x R1 / D1m < 15, where d1m is the inner diameter of the image side surface of the first spacer, D1m is the outer diameter of the image side surface of the first spacer, R1 is the radius of curvature of the object side surface of the first lens, and f2 is the effective focal length of the second lens.

[0009] In one embodiment, the at least one spacer further includes a third spacer located on the image side of the third lens and partially in contact with the image side surface of the third lens. The optical system assembly can satisfy: 8 < (f3 x N3 + f4 x N4) / EP34 < 32, where f3 is the effective focal length of the third lens, f4 is the effective focal length of the fourth lens, N3 is the refractive index of the third lens, N4 is the refractive index of the fourth lens, and EP34 is the separation distance in the direction along the optical axis from the image side surface of the third spacer to the object side surface of the fourth spacer.

[0010] In one embodiment, the at least one spacer further includes a second spacer located on the image side of the second lens and partially in contact with the image side surface of the second lens. The optical system assembly can satisfy: -50 < (R4 + R6) / (D2s-d3s) < -6, where R4 is the radius of curvature of the image side surface of the second lens, R6 is the radius of curvature of the image side surface of the third lens, D2s is the outer diameter of the object side surface of the second spacer, and d3s is the inner diameter of the object side surface of the third spacer.

[0011] In one embodiment, the optical system components may satisfy: -22mm < (R7-R5)×EP34 / T34 < 0mm, where R5 is the radius of curvature of the object-side surface of the third lens, R7 is the radius of curvature of the object-side surface of the fourth lens, EP34 is the distance between the image-side surface of the third isolator and the object-side surface of the fourth isolator along the optical axis, and T34 is the air gap between the third lens and the fourth lens along the optical axis.

[0012] In one implementation, the optical system components may meet the following requirements: 15mm -1 <V2 / d3m+V3 / D3m<30mm -1 Where V2 is the Abbe number of the second lens, V3 is the Abbe number of the third lens, d3m is the inner diameter of the image-side surface of the third isolator, and D3m is the outer diameter of the image-side surface of the third isolator.

[0013] In one embodiment, at least one isolator further includes an auxiliary isolator located on the image side of the fourth isolator and in contact with a portion of the image side surface of the fourth isolator. The optical system assembly can satisfy: 30mm < (D4bm - d4bm) × CT5 / CP4b < 92mm, where d4bm is the inner diameter of the image side surface of the auxiliary isolator, D4bm is the outer diameter of the image side surface of the auxiliary isolator, CT5 is the center thickness of the fifth lens on the optical axis, and CP4b is the maximum thickness of the auxiliary isolator.

[0014] In one embodiment, the optical system components may satisfy: 2 < (D3s + D4s) / (CP3 + EP34 + CT4) < 12, where D3s is the outer diameter of the object side of the third isolator, D4s is the outer diameter of the object side of the fourth isolator, CT4 is the center thickness of the fourth lens on the optical axis, CP3 is the maximum thickness of the third isolator, and EP34 is the distance between the image side of the third isolator and the object side of the fourth isolator along the optical axis.

[0015] In one embodiment, the first lens has positive optical power, and the second lens has negative optical power.

[0016] In one embodiment, the refractive index of all lenses from the first to the fifth lens is greater than 1.5; and the number of lenses with positive optical power from the first to the fifth lens is greater than the number of lenses with negative optical power.

[0017] In an exemplary embodiment of this application, by reasonably matching the five lenses, the isolator and the lens barrel, and by reasonably setting the optical power and radius of curvature of the fourth and fifth lenses, as well as the key technical parameters of the optical system components such as -5 < d0m / f5 < 0, 0 < D0m / R10 < 15 and 0mm < R9×(D4s+d4s) / f4 < 33mm, the optical system components provided by this application can have characteristics such as less stray light and higher imaging quality. For example, by setting the inner and outer diameters of the side of the fourth isolator, this application can effectively block excess light and avoid stray light phenomena; by setting the radius of curvature of the fifth lens, it can control both the incident direction of light entering the fifth lens and the exit direction after passing through the fifth lens, thereby improving the imaging effect on the imaging surface, and also control the structure of the fifth lens to prevent the fifth lens from exceeding the outer dimensions of the lens barrel; by controlling the optical power of the fourth and fifth lenses, a large aperture effect can be achieved; by controlling the inner and outer diameters of the image side end of the lens barrel, it can control the number of incident light rays entering the optical system components and the number of light rays exiting the optical system components, thereby reducing stray light within the components and improving the imaging effect. Attached Figure Description

[0018] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0019] Figures 1A to 1C These are schematic diagrams of the optical system components under the three implementation methods in Example 1;

[0020] Figures 2A to 2D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical system components of Embodiment 1 are shown respectively.

[0021] Figures 3A to 3C These are schematic diagrams of the optical system components under the three implementation methods in Example 2;

[0022] Figures 4A to 4D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical system components of Embodiment 2 are shown respectively.

[0023] Figures 5A to 5C These are schematic diagrams of the optical system components under the three implementation methods in Example 3;

[0024] Figures 6A to 6D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical system components of Embodiment 3 are shown respectively; and

[0025] Figure 7 This is a schematic diagram of some parameters of an optical system component according to an embodiment of this application. Detailed Implementation

[0026] To better understand this application, various aspects of this application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely illustrative of exemplary embodiments of this application and are not intended to limit the scope of this application in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0027] It should be noted that in this specification, the terms "first," "second," "third," etc., are used only to distinguish one feature from another and do not imply any limitation on the features. Therefore, without departing from the teachings of this application, the first lens discussed below may also be referred to as the second lens or the third lens, and the first spacer may also be referred to as the second spacer or the third spacer.

[0028] In the accompanying drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for ease of illustration. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are illustrated by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to those shown in the drawings. The drawings are for illustrative purposes only and are not drawn to scale. It should be understood that, for ease of illustration, the thickness, size, and shape of the spacer and lens barrel have also been slightly exaggerated in the accompanying drawings.

[0029] In this text, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the location of the convexity is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the location of the concaveness is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the subject is called the object-side surface of the lens, and the surface of each lens closest to the imaging plane is called the image-side surface of the lens. It should be understood that the surface of each isolator closest to the subject is called the object-side surface of the isolator, and the surface of each isolator closest to the imaging plane is called the image-side surface of the isolator. The surface of the lens barrel closest to the subject is called the object-side end of the lens barrel, and the surface of the lens barrel closest to the imaging plane is called the image-side end of the lens barrel.

[0030] It should also be understood that the terms "comprising," "including," "having," "containing," and / or "comprising," when used in this specification, indicate the presence of the stated features, elements, and / or components, but do not exclude the presence or addition of one or more other features, elements, components, and / or combinations thereof. Furthermore, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire list of features, not individual elements in the list. Additionally, when describing embodiments of this application, the word "may" is used to mean "one or more embodiments of this application." And the term "exemplary" is intended to refer to an example or illustration.

[0031] Unless otherwise specified, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. It should also be understood that terms (e.g., those defined in common dictionaries) shall be interpreted as having the meaning consistent with their meaning in the context of the relevant art and shall not be interpreted in an idealized or overly formalized sense, unless expressly so specified herein.

[0032] It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of this application can be combined with each other. The following embodiments only illustrate several implementation methods of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this application. It should be pointed out that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of this application, and these all fall within the protection scope of this application. For example, the lens groups (i.e., the first to fifth lenses), lens barrel structures, and isolation components in the various embodiments of this application can be arbitrarily combined, and it is not limited to the lens group in one embodiment being combined only with the lens barrel structure, isolation component, etc. of that embodiment. The present application will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] The features, principles and other aspects of this application are described in detail below.

[0034] An optical system assembly according to an exemplary embodiment of this application may include five lenses with optical power, namely a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. These five lenses are arranged sequentially along the optical axis from the object side to the image side. Any two adjacent lenses among the first to fifth lenses may have a spacing distance. Any one of the first to fifth lenses may have a central thickness along the optical axis.

[0035] According to an exemplary embodiment of this application, each of the first to fifth lenses may have an optical region for optical imaging and a non-optical region extending outward from the outer periphery of the optical region. Generally speaking, the optical region refers to the area of ​​the lens used for optical imaging, while the non-optical region is the structural area of ​​the lens. During the assembly of the optical system components, separators can be placed at the non-optical regions of each lens using processes such as adhesive bonding, and each lens can be connected to the lens barrel. During the imaging process of the optical system components, the optical regions of each lens can transmit light from the object to form an optical path, forming the final optical image; while the non-optical regions of the assembled lenses are housed in the lens barrel, which cannot transmit light, thus the non-optical regions do not directly participate in the imaging process of the optical system components. It should be noted that, for ease of description, this application describes each lens as divided into two parts: an optical region and a non-optical region. However, it should be understood that the optical region and the non-optical region of the lens can be formed as a whole during the manufacturing process, rather than as two separate parts.

[0036] An optical system component according to an exemplary embodiment of this application may include at least one isolator, such as at least one of a first isolator, a second isolator, a third isolator, a fourth isolator, and an auxiliary isolator. Exemplarily, the first isolator may be located on the image side of a first lens and partially contact the image side surface of the first lens, and may abut against a non-optical region of the image side surface of the first lens. The second isolator may be located on the image side of a second lens and partially contact the image side surface of the second lens, and may abut against a non-optical region of the image side surface of the second lens. The third isolator may be located on the image side of a third lens and partially contact the image side surface of the third lens, and may abut against a non-optical region of the image side surface of the third lens. The fourth isolator may be located on the image side of a fourth lens and partially contact the image side surface of the fourth lens, and may abut against a non-optical region of the image side surface of the fourth lens. The auxiliary isolator may be located on the image side of the fourth isolator and partially contact the image side surface of the fourth isolator, and may abut against the image side surface of the fourth isolator. For example, the first isolator may contact a non-optical region on the image-side of the first lens and simultaneously contact a non-optical region on the object-side of the second lens. For instance, the object-side of the first isolator may contact a non-optical region on the image-side of the first lens, and the image-side of the first isolator may contact a non-optical region on the object-side of the second lens.

[0037] In an exemplary embodiment of this application, an optical system component may include a portion located on the image side of the second isolator and in contact with the image side surface of the second isolator, which may abut against a second auxiliary isolator at the image side surface of the second isolator.

[0038] An optical system assembly according to an exemplary embodiment of this application may include a lens barrel housing a lens group and multiple spacers. For example, as... Figures 1A to 1CAs shown, the lens barrel can be a one-piece lens barrel used to house the first lens to the fifth lens and the first isolation member to the auxiliary isolation member.

[0039] According to an exemplary embodiment of this application, the isolation component may include at least one spacer. By reasonably setting the number, thickness, inner diameter, and outer diameter of the spacers, it is beneficial to improve the assembly of optical system components, to block stray light, and to improve the imaging quality of the optical system components.

[0040] In an exemplary embodiment, the fourth lens has positive optical power, the fifth lens has negative optical power, and the radii of curvature of both the object-side and image-side surfaces of the fifth lens are greater than zero. The optical system assembly according to this application satisfies: -5 < d0m / f5 < 0, 0 < D0m / R10 < 15, and 0mm < R9×(D4s+d4s) / f4 < 33mm, where f4 is the effective focal length of the fourth lens, f5 is the effective focal length of the fifth lens, R9 is the radius of curvature of the object-side surface of the fifth lens, R10 is the radius of curvature of the image-side surface of the fifth lens, d4s is the inner diameter of the object-side surface of the fourth isolator, D4s is the outer diameter of the object-side surface of the fourth isolator, D0m is the outer diameter of the image-side end of the lens barrel, and d0m is the inner diameter of the image-side end of the lens barrel.

[0041] In this application, by reasonably matching the five lenses, the isolator and the lens barrel, and by reasonably setting the optical power and radius of curvature of the fourth and fifth lenses, as well as the key technical parameters of the optical system components such as -5 < d0m / f5 < 0, 0 < D0m / R10 < 15 and 0mm < R9×(D4s+d4s) / f4 < 33mm, the optical system components provided by this application can have characteristics such as less stray light and higher imaging quality. For example, by setting the inner and outer diameters of the side of the fourth isolator, this application can effectively block excess light and avoid stray light phenomena; by setting the radius of curvature of the fifth lens, it can control both the incident direction of light entering the fifth lens and the exit direction after passing through the fifth lens, thereby improving the imaging effect on the imaging surface, and also control the structure of the fifth lens to prevent the fifth lens from exceeding the outer dimensions of the lens barrel; by controlling the optical power of the fourth and fifth lenses, a large aperture effect can be achieved; by controlling the inner and outer diameters of the image side end of the lens barrel, it can control the number of incident light rays entering the optical system components and the number of light rays exiting the optical system components, thereby reducing stray light within the components and improving the imaging effect.

[0042] In an exemplary embodiment, the optical system component according to this application satisfies: Semi-FOV > 45° and 0 < TAN(Semi-FOV)×f / (D1s-d1s) < 15, where f is the total effective focal length of the optical system component, Semi-FOV is half of the maximum field of view of the optical system component, d1s is the inner diameter of the object-side surface of the first isolator, and D1s is the outer diameter of the object-side surface of the first isolator. By satisfying Semi-FOV > 45° and 0 < TAN(Semi-FOV)×f / (D1s-d1s) < 15, the optical system component can have wide-angle characteristics by controlling half of the maximum field of view, thereby increasing the number of incident rays exiting the optical system component. Simultaneously, by controlling the difference between the inner and outer diameters of the object-side surface of the first isolator, the risk of long cantilevered arms in the first isolator can be reduced. Furthermore, by controlling the inner diameter of the first isolator, stray rays entering the second lens can be effectively blocked, thereby improving image quality.

[0043] In an exemplary embodiment, the optical system component according to this application satisfies: -55 < R2 / d0s - f1 / EP01 < 0, where f1 is the effective focal length of the first lens, EP01 is the distance along the optical axis between the object-side end of the lens barrel and the object-side surface of the first isolator, R2 is the radius of curvature of the image-side surface of the first lens, and d0s is the inner diameter of the object-side end of the lens barrel. Satisfying -55 < R2 / d0s - f1 / EP01 < 0 effectively improves the directional reflection effect of the first lens by controlling the distance along the optical axis between the object-side end of the lens barrel and the object-side surface of the first isolator, thereby reducing stray light within the component. Simultaneously, by controlling the inner diameter of the object-side end of the lens barrel, the amount of light entering the first lens can be adjusted. Furthermore, by controlling the radius of curvature of the image-side surface of the first lens, the degree of light deflection in the first lens can be reduced, effectively reducing the sensitivity of the first lens.

[0044] In an exemplary embodiment, the optical system component according to this application satisfies: 0 < f2 / d1m × R1 / D1m < 15, where d1m is the inner diameter of the image-side surface of the first isolator, D1m is the outer diameter of the image-side surface of the first isolator, R1 is the radius of curvature of the object-side surface of the first lens, and f2 is the effective focal length of the second lens. Satisfying 0 < f2 / d1m × R1 / D1m < 15 allows control of the amount of light entering the first lens by controlling the radius of curvature of the object-side surface of the first lens, thereby reducing stray light entering the component. Simultaneously, by controlling the inner and outer diameters of the image-side surface of the first isolator, the trajectory of the incident light can be reasonably controlled, effectively reducing stray light phenomena.

[0045] In an exemplary embodiment, the optical system components according to this application satisfy: 8 < (f3 × N3 + f4 × N4) / EP34 < 32, where f3 is the effective focal length of the third lens, f4 is the effective focal length of the fourth lens, N3 is the refractive index of the third lens, N4 is the refractive index of the fourth lens, and EP34 is the distance between the image-side surface of the third isolator and the object-side surface of the fourth isolator along the optical axis. By satisfying 8 < (f3 × N3 + f4 × N4) / EP34 < 32, the distortion caused by the third and fourth lenses can be controlled within a reasonable range by controlling their effective focal lengths and refractive indices. Simultaneously, by controlling the distance between the image-side surface of the third isolator and the object-side surface of the fourth isolator along the optical axis, the light intake and exhaust paths can be adjusted.

[0046] In an exemplary embodiment, the optical system component according to this application satisfies: -50 < (R4 + R6) / (D2s - d3s) < -6, where R4 is the radius of curvature of the image-side surface of the second lens, R6 is the radius of curvature of the image-side surface of the third lens, D2s is the outer diameter of the object-side surface of the second isolator, and d3s is the inner diameter of the object-side surface of the third isolator. Exemplarily, there may be a large step difference structure between the second and third lenses, satisfying -50 < (R4 + R6) / (D2s - d3s) < -6. By setting the inner and outer diameters of the second and third isolators, the outer diameter of the third lens can be reasonably set, and the efficiency of intercepting stray light can be improved. Simultaneously, combined with a lens radius of curvature within a reasonable range, the light path can be effectively controlled to improve the final image quality.

[0047] In an exemplary embodiment, the optical system component according to this application satisfies: -22mm < (R7-R5)×EP34 / T34 < 0mm, where R5 is the radius of curvature of the object-side surface of the third lens, R7 is the radius of curvature of the object-side surface of the fourth lens, EP34 is the distance between the image-side surface of the third isolator and the object-side surface of the fourth isolator along the optical axis, and T34 is the air gap between the third and fourth lenses along the optical axis. Satisfying -22mm < (R7-R5)×EP34 / T34 < 0mm allows for a smoother light path within the third and fourth lenses by controlling their radii of curvature. Simultaneously, controlling the distance between the image-side surface of the third isolator and the object-side surface of the fourth isolator along the optical axis optimizes the structure of the fourth lens. Furthermore, controlling the air gap between the third and fourth lenses optimizes the lens structure and improves image quality.

[0048] In an exemplary embodiment, the optical system component according to this application can satisfy: 15mm -1 <V2 / d3m+V3 / D3m<30mm -1Where V2 is the Abbe number of the second lens, V3 is the Abbe number of the third lens, d3m is the inner diameter of the image-side surface of the third isolator, and D3m is the outer diameter of the image-side surface of the third isolator. Satisfying: 15mm -1 <V2 / d3m+V3 / D3m<30mm -1 By controlling the Abbe number of the second and third lenses, the dispersion of light in the second and third lenses can be reduced. At the same time, by controlling the inner and outer diameters of the image side of the third isolator, the third isolator can absorb excess diffraction stray light, and the structure of the optical system components can be reasonably adjusted.

[0049] In an exemplary embodiment, the optical system component according to this application satisfies the following condition: 30mm < (D4bm - d4bm) × CT5 / CP4b < 92mm, where d4bm is the inner diameter of the image-side side of the auxiliary isolator, D4bm is the outer diameter of the image-side side of the auxiliary isolator, CT5 is the center thickness of the fifth lens on the optical axis, and CP4b is the maximum thickness of the auxiliary isolator. Satisfying 30mm < (D4bm - d4bm) × CT5 / CP4b < 92mm allows the auxiliary isolator to effectively block stray light and also allows control over the center thickness and outer diameter of the fifth lens, thereby facilitating control over the inner diameter of the image-side end of the lens barrel and improving the uniformity of the lens barrel wall thickness.

[0050] In an exemplary embodiment, the optical system component according to this application satisfies: 2 < (D3s + D4s) / (CP3 + EP34 + CT4) < 12, where D3s is the outer diameter of the object-side surface of the third isolator, D4s is the outer diameter of the object-side surface of the fourth isolator, CT4 is the center thickness of the fourth lens along the optical axis, CP3 is the maximum thickness of the third isolator, and EP34 is the distance between the image-side surface of the third isolator and the object-side surface of the fourth isolator along the optical axis. Satisfying 2 < (D3s + D4s) / (CP3 + EP34 + CT4) < 12 allows for indirect control of the structure of the fourth and fifth lenses by controlling the outer diameters of the object-side surfaces of the third and fourth isolators. This ensures the optical system component has a reasonably sized aperture, guaranteeing a uniform and robust wall thickness in the lens barrel and preventing deformation. Furthermore, controlling the thickness of the third isolator, the center thickness of the fourth lens along the optical axis, and the sum of the distances between the image-side surface of the third isolator and the object-side surface of the fourth isolator along the optical axis facilitates control over the feasibility of lens formation.

[0051] In an exemplary embodiment, the first lens may have a positive optical power, and the second lens may have a negative optical power. By reasonably setting the optical power of the first and second lenses, this application can control the refractive power of the first and second lenses on light. For example, the first lens can be controlled to converge light and the second lens to diverge light, thereby allowing light to pass through each lens along a preset path as much as possible and finally form an image on the imaging surface.

[0052] In an exemplary embodiment, the refractive index of all lenses from the first to the fifth lens can be greater than 1.5; and the number of lenses with positive optical power from the first to the fifth lens can be greater than the number of lenses with negative optical power. This application, by rationally distributing the refractive index and optical power of each lens, facilitates improving the refractive index of each lens, controlling the center and edge thickness of each lens, and thus simplifying the structural arrangement of each lens.

[0053] In an exemplary embodiment, the optical system assembly according to this application further includes an aperture stop disposed between the object side and the first lens. Optionally, the optical system assembly may also include a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element located on the imaging surface. This application proposes an optical system assembly with characteristics such as low stray light, high stability, high yield, and high imaging quality. The optical system assembly according to the above embodiments of this application can employ multiple lenses, such as the five lenses mentioned above. By rationally allocating the optical power, surface shape, material, center thickness of each lens, and on-axis spacing between each lens, incident light can be effectively converged, the overall optical length of the optical system assembly can be reduced, and the manufacturability of the optical system assembly can be improved, making the optical system assembly more conducive to production and processing. In the optical system assembly of the above embodiments of this application, by setting a spacer between adjacent lenses and designing the inner and outer diameters of the spacer according to the optical path, stray light can be effectively blocked and eliminated, improving the imaging quality of the optical system assembly.

[0054] In embodiments of this application, at least one of the mirror surfaces of each lens is an aspherical mirror surface; that is, at least one mirror surface from the object-side surface of the first lens to the image-side surface of the fifth lens is an aspherical mirror surface. An aspherical lens is characterized by a continuously changing curvature from the lens center to the lens periphery. Unlike a spherical lens, which has a constant curvature from the lens center to the lens periphery, an aspherical lens has better curvature radius characteristics, offering advantages in improving distortion aberrations and astigmatism. By using an aspherical lens, aberrations occurring during imaging can be eliminated as much as possible, thereby improving image quality. Optionally, at least one of the object-side and image-side surfaces of each of the first, second, third, fourth, and fifth lenses is an aspherical mirror surface. Optionally, both the object-side and image-side surfaces of each of the first, second, third, fourth, and fifth lenses are aspherical mirror surfaces.

[0055] However, those skilled in the art will understand that the number of lenses constituting the optical system assembly can be varied to obtain the various results and advantages described herein without departing from the technical solutions claimed in this application. For example, although five lenses are described as an example in the embodiments, the optical system assembly is not limited to including five lenses. If desired, the optical system assembly may also include other numbers of lenses.

[0056] Specific embodiments of the optical system components applicable to the above-described embodiments are further described below with reference to the accompanying drawings.

[0057] Example 1

[0058] The following is for reference Figures 1A to 2D Describes an optical system component according to Embodiment 1 of this application. Figures 1A to 1C The optical system components in three different implementations of Example 1 are shown respectively.

[0059] like Figures 1A to 1C As shown, the optical system components, from the object side to the image side, include, in sequence: aperture stop STO (not shown), first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, filter (not shown), and imaging plane (not shown).

[0060] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being convex. The second lens E2 has negative optical power, with its object-side surface S3 being concave and its image-side surface S4 being convex. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has positive optical power, with its object-side surface S7 being concave and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The filter has an object-side surface S11 and an image-side surface S12. Light from the object passes sequentially through each surface S1 to S12 and is finally imaged on the imaging plane.

[0061] Table 1 shows the basic parameters of the optical system components of Example 1, where the units for radius of curvature, thickness / distance, and focal length are millimeters (mm).

[0062]

[0063] Table 1

[0064] In this example, half of the maximum field of view (Semi-FOV) of the optical system assembly is 49.5000°, and the total effective focal length (f) of the optical system assembly is 2.4869 mm.

[0065] like Figure 1A As shown, the optical system assembly may include four isolators: a first isolator P1, a second isolator P2, a third isolator P3, and a fourth isolator P4. The lens barrel may accommodate first lenses E1 to fifth lenses E5 and first isolators P1 to fourth isolators P4.

[0066] like Figure 1B As shown, the optical system assembly may include five isolators: a first isolator P1, a second isolator P2, a third isolator P3, a fourth isolator P4, and an auxiliary isolator P4b. The lens barrel may accommodate first lenses E1 to fifth lenses E5, as well as first isolators P1 to auxiliary isolators P4b.

[0067] like Figure 1C As shown, the optical system assembly may include six isolators: a first isolator P1, a second isolator P2, a second auxiliary isolator P2b, a third isolator P3, a fourth isolator P4, and an auxiliary isolator P4b. The lens barrel may accommodate first lenses E1 to fifth lenses E5 and first isolators P1 to auxiliary isolators P4b.

[0068] Table 2 shows the basic parameters of each isolator in the three implementations of the optical system assembly of Example 1, wherein the unit of each basic parameter is millimeters (mm).

[0069]

[0070] Table 2

[0071] It should be understood that this example only exemplifies the structure and parameters of each isolator under three implementation methods, and does not explicitly limit the specific structure and actual parameters of each isolator. In actual production, the specific structure and actual parameters of each isolator can be set in any suitable manner.

[0072] In Embodiment 1, the object-side surface and image-side surface of any one of the first lens E1 to the fifth lens E5 are aspherical surfaces, and the surface shape x of each aspherical lens can be defined using, but is not limited to, the following aspherical formula:

[0073]

[0074] Where x is the distance vector from the vertex of the aspherical surface at a height of h along the optical axis; c is the paraxial curvature of the aspherical surface, c = 1 / R (i.e., the paraxial curvature c is the reciprocal of the radius of curvature R in Table 1 above); k is the conic coefficient; Ai is the i-th order correction coefficient of the aspherical surface. Table 3 below gives the higher-order coefficients A4, A6, A8, A10 that can be used for each aspherical mirror S1-S10 in Example 1. 10 A 12 A 14 A 16 A 18 and A 20 .

[0075] Face Number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -1.3869E-02 -1.3208E-03 -1.3555E-04 -5.2334E-06 -5.3855E-07 2.7379E-06 2.0511E-06 2.5435E-06 -6.9577E-07 S2 -2.9973E-02 -1.9913E-03 -9.3997E-05 9.6284E-06 -7.1223E-07 -5.4794E-07 -1.7638E-06 1.0152E-06 1.5519E-06 S3 -6.2952E-02 -3.4004E-03 8.3649E-05 3.8089E-04 5.4548E-06 3.4843E-05 -9.8574E-06 1.3649E-06 -3.7043E-06 S4 -1.3570E-01 1.4919E-02 -6.2387E-03 2.2229E-03 -5.6796E-04 2.9983E-04 -9.9198E-05 2.2456E-05 -1.1441E-05 S5 -2.1446E-01 2.4601E-02 -7.9900E-03 3.1487E-03 -3.9249E-04 3.2311E-04 -1.2958E-04 4.5143E-07 -1.3652E-05 S6 -2.4351E-01 -5.1753E-03 2.0741E-03 3.8154E-03 1.3162E-03 2.3900E-04 -1.2123E-04 -8.2396E-05 -6.7594E-05 S7 -2.9528E-02 5.2903E-03 8.4390E-03 -3.3017E-03 -1.2094E-03 -9.2098E-04 -3.6399E-04 1.8949E-04 1.0525E-04 S8 3.1373E-01 6.3611E-02 1.1967E-02 -1.7275E-02 -1.6098E-03 1.4550E-03 6.6824E-04 -4.8680E-05 4.4544E-05 S9 -2.6607E+00 5.2652E-01 -1.0337E-01 1.7992E-02 7.5743E-04 -5.8985E-03 3.8794E-03 -1.8138E-03 4.7455E-04 S10 -6.2785E+00 1.2191E+00 -3.7521E-01 1.4201E-01 -5.2981E-02 1.7993E-02 -7.4009E-03 1.7751E-03 -1.0651E-03

[0076] Table 3

[0077] Figure 2A The on-axis chromatic aberration curve of the optical system component of Embodiment 1 is shown, which represents the deflection of the focal point of light of different wavelengths after passing through the optical system component. Figure 2B The astigmatism curves of the optical system components of Embodiment 1 are shown, representing the meridional image plane curvature and the sagittal image plane curvature. Figure 2C The distortion curves of the optical system components of Embodiment 1 are shown, representing the distortion magnitude values ​​corresponding to different field of view angles. Figure 2D The magnification chromatic aberration curves of the optical system components of Embodiment 1 are shown, representing the deviations in image height at different points on the imaging plane after light passes through the optical system components. According to... Figures 2A to 2D It can be seen that the optical system components given in Example 1 can achieve good imaging quality.

[0078] Example 2

[0079] The following is for reference Figures 3A to 4DThe optical system components according to Embodiment 2 of this application are described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to those in Embodiment 1 will be omitted. Figures 3A to 3C The optical system components in three different implementations of Example 1 are shown respectively.

[0080] like Figures 3A to 3C As shown, the optical system components, from the object side to the image side, include, in sequence: aperture stop STO (not shown), first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, filter (not shown), and imaging plane (not shown).

[0081] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being convex. The second lens E2 has negative optical power, with its object-side surface S3 being concave and its image-side surface S4 being convex. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has positive optical power, with its object-side surface S7 being concave and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The filter has an object-side surface S11 and an image-side surface S12. Light from the object passes sequentially through each surface S1 to S12 and is finally imaged on the imaging plane.

[0082] In this example, half of the maximum field of view (Semi-FOV) of the optical system assembly is 46.0000°, and the total effective focal length (f) of the optical system assembly is 2.4840 mm.

[0083] like Figure 3A As shown, the optical system assembly may include four isolators: a first isolator P1, a second isolator P2, a third isolator P3, and a fourth isolator P4. The lens barrel may accommodate first lenses E1 to fifth lenses E5 and first isolators P1 to fourth isolators P4.

[0084] like Figure 3B and Figure 3C As shown, the optical system assembly may include five isolators: a first isolator P1, a second isolator P2, a third isolator P3, a fourth isolator P4, and an auxiliary isolator P4b. The lens barrel may accommodate first lenses E1 to fifth lenses E5, as well as first isolators P1 to auxiliary isolators P4b.

[0085] It should be understood that this example only exemplifies the structure and parameters of each isolator under three implementation methods, and does not explicitly limit the specific structure and actual parameters of each isolator. In actual production, the specific structure and actual parameters of each isolator can be set in any suitable manner.

[0086] Table 4 shows the basic parameters of the optical system components of Embodiment 2, wherein the units of radius of curvature, thickness / distance, and focal length are millimeters (mm). Table 5 shows the basic parameters of each isolator in the three implementations of the optical system components of Embodiment 2, wherein the units of each basic parameter are millimeters (mm). Table 6 shows the higher-order coefficients that can be used for each aspherical mirror in Embodiment 2, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0087]

[0088] Table 4

[0089]

[0090]

[0091] Table 5

[0092] Face Number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -1.3732E-02 -1.3077E-03 -1.3420E-04 -5.1816E-06 -5.3322E-07 2.7107E-06 2.0308E-06 2.5183E-06 -6.8888E-07 S2 -2.9676E-02 -1.9716E-03 -9.3066E-05 9.5330E-06 -7.0518E-07 -5.4251E-07 -1.7463E-06 1.0051E-06 1.5366E-06 S3 -6.2329E-02 -3.3667E-03 8.2821E-05 3.7712E-04 5.4008E-06 3.4498E-05 -9.7598E-06 1.3514E-06 -3.6677E-06 S4 -1.3435E-01 1.4771E-02 -6.1769E-03 2.2009E-03 -5.6234E-04 2.9686E-04 -9.8216E-05 2.2234E-05 -1.1328E-05 S5 -2.1233E-01 2.4357E-02 -7.9109E-03 3.1175E-03 -3.8861E-04 3.1991E-04 -1.2830E-04 4.4696E-07 -1.3516E-05 S6 -2.4110E-01 -5.1241E-03 2.0535E-03 3.7776E-03 1.3031E-03 2.3663E-04 -1.2003E-04 -8.1580E-05 -6.6925E-05 S7 -2.9236E-02 5.2380E-03 8.3555E-03 -3.2690E-03 -1.1975E-03 -9.1186E-04 -3.6039E-04 1.8761E-04 1.0421E-04 S8 3.1063E-01 6.2981E-02 1.1848E-02 -1.7104E-02 -1.5939E-03 1.4406E-03 6.6163E-04 -4.8198E-05 4.4103E-05 S9 -2.6343E+00 5.2131E-01 -1.0235E-01 1.7814E-02 7.4993E-04 -5.8401E-03 3.8410E-03 -1.7959E-03 4.6985E-04 S10 -6.2163E+00 1.2070E+00 -3.7149E-01 1.4060E-01 -5.2457E-02 1.7815E-02 -7.3276E-03 1.7575E-03 -1.0545E-03

[0093] Table 6

[0094] Figure 4A The on-axis chromatic aberration curve of the optical system component of Embodiment 2 is shown, which represents the deflection of the focal point of light of different wavelengths after passing through the optical system component. Figure 4B The astigmatism curves of the optical system components of Embodiment 2 are shown, representing the meridional image plane curvature and the sagittal image plane curvature. Figure 4C The distortion curves of the optical system components of Embodiment 2 are shown, representing the distortion magnitude values ​​corresponding to different field of view angles. Figure 4D The magnification chromatic aberration curves of the optical system components of Embodiment 2 are shown, representing the deviations in image height at different points on the imaging plane after light passes through the optical system components. According to... Figures 4A to 4D It can be seen that the optical system components given in Example 2 can achieve good imaging quality.

[0095] Example 3

[0096] The following is for reference Figures 5A to 6D Describes an optical system component according to Embodiment 3 of this application. Figures 5A to 5C The optical system components in three different implementations of Example 3 are shown respectively.

[0097] like Figures 5A to 5C As shown, the optical system components, from the object side to the image side, include, in sequence: aperture stop STO (not shown), first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, filter (not shown), and imaging plane (not shown).

[0098] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being concave and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The filter has an object-side surface S11 and an image-side surface S12. Light from the object passes sequentially through each surface S1 to S12 and is finally imaged onto the imaging plane.

[0099] In this example, half of the maximum field of view (Semi-FOV) of the optical system assembly is 51.5000°, and the total effective focal length (f) of the optical system assembly is 2.7311 mm.

[0100] like Figure 5A and Figure 5B As shown, the optical system assembly may include four isolators: a first isolator P1, a third isolator P3, a fourth isolator P4, and an auxiliary isolator P4b. The lens barrel may accommodate first lenses E1 to fifth lenses E5, as well as first isolators P1 to auxiliary isolators P4b.

[0101] like Figure 5C As shown, the optical system assembly may include three isolators: a first isolator P1, a third isolator P3, and a fourth isolator P4. The lens barrel may accommodate first lenses E1 to fifth lenses E5 and first isolators P1 to fourth isolators P4.

[0102] It should be understood that this example only exemplifies the structure and parameters of each isolator under three implementation methods, and does not explicitly limit the specific structure and actual parameters of each isolator. In actual production, the specific structure and actual parameters of each isolator can be set in any suitable manner.

[0103] Table 7 shows the basic parameters of the optical system components of Embodiment 3, wherein the units of radius of curvature, thickness / distance, and focal length are millimeters (mm). Table 8 shows the basic parameters of each isolator in the three embodiments of the optical system components of Embodiment 3, wherein the units of each basic parameter are millimeters (mm). Table 9 shows the higher-order coefficients that can be used for each aspherical mirror in Embodiment 3, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0104]

[0105] Table 7

[0106]

[0107]

[0108] Table 8

[0109] Face Number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -1.7428E-02 -1.8369E-03 -1.6920E-04 2.2369E-05 2.4210E-05 1.8526E-05 8.6195E-06 2.8039E-06 -1.8097E-06 S2 -3.6983E-02 -2.6704E-03 -1.0115E-04 3.7072E-05 1.9112E-05 1.6230E-05 1.1729E-05 9.5255E-06 4.0366E-06 S3 -7.6500E-02 -3.8117E-03 6.5876E-04 6.2680E-04 8.7331E-06 6.1039E-06 -4.3974E-05 -1.3800E-05 -9.6351E-06 S4 -1.5577E-01 1.6150E-02 -6.7826E-03 2.9501E-03 -7.0491E-04 2.9141E-04 -2.1492E-04 4.1314E-07 -2.9758E-05 S5 -2.4398E-01 2.8592E-02 -8.0544E-03 4.4168E-03 -6.7078E-04 9.5850E-05 -3.7867E-04 -6.1658E-05 -3.5508E-05 S6 -2.8552E-01 1.8249E-03 9.1299E-03 6.7206E-03 7.9553E-04 -1.0994E-03 -1.0770E-03 -5.0495E-04 -1.7581E-04 S7 -3.2905E-02 5.6131E-03 3.4570E-03 -8.7940E-03 -2.9364E-03 -6.6028E-04 7.1328E-04 9.2592E-04 2.7282E-04 S8 4.0430E-01 7.5696E-02 2.6640E-04 -2.2167E-02 3.5292E-03 4.9393E-03 1.5639E-03 8.5948E-05 1.1437E-04 S9 -2.8981E+00 6.0622E-01 -1.2969E-01 2.2934E-02 -3.1227E-03 -5.3308E-03 4.9542E-03 -2.1237E-03 1.1535E-03 S10 -6.9070E+00 1.3453E+00 -4.4035E-01 1.4848E-01 -8.0008E-02 1.2861E-02 -1.6092E-02 -3.5891E-04 -2.6033E-03

[0110] Table 9

[0111] Figure 6A The on-axis chromatic aberration curve of the optical system component of Embodiment 3 is shown, which represents the deflection of the focal point of light of different wavelengths after passing through the optical system component. Figure 6B The astigmatism curves of the optical system components of Embodiment 3 are shown, representing the meridional image plane curvature and the sagittal image plane curvature. Figure 6C The distortion curves of the optical system components of Embodiment 3 are shown, representing the distortion magnitude values ​​corresponding to different field of view angles. Figure 6D The magnification chromatic aberration curves of the optical system components of Embodiment 3 are shown, representing the deviations in image height at different points on the imaging plane after light passes through the optical system components. According to... Figures 6A to 6D It can be seen that the optical system components given in Example 3 can achieve good imaging quality.

[0112] In summary, Examples 1 to 3 satisfy the relationships shown in Tables 10-1, 10-2 and 10-3, respectively.

[0113]

[0114] Table 10-1

[0115]

[0116] Table 10-2

[0117]

[0118] Table 10-3

[0119] This application also provides an imaging device, whose electronic photosensitive element can be a photocoupled device (CCD) or a complementary metal oxide semiconductor device (CMOS). The imaging device can be a stand-alone imaging device such as a digital camera, or an imaging module integrated into a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical system components described above.

[0120] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. An optical system component, characterized in that, include: The lens group, along the optical axis from the object side to the image side, sequentially includes a first lens, a second lens, a third lens, a fourth lens, and a fifth lens, each having optical power. The first lens has positive optical power, the second lens has negative optical power, the third lens has positive optical power, the fourth lens has positive optical power, and the fifth lens has negative optical power. The radius of curvature of the object-side surface of the first lens is greater than zero, the radius of curvature of the object-side surface of the third lens is greater than zero, the radii of curvature of both the object-side and image-side surfaces of the fourth lens are less than zero, and the radii of curvature of both the object-side and image-side surfaces of the fifth lens are greater than zero. The optical system assembly contains five lenses with optical power. At least one isolating member includes: a second isolating member located on the image side of the second lens and in contact with a portion of the image-side surface of the second lens; a third isolating member located on the image side of the third lens and in contact with a portion of the image-side surface of the third lens; and a fourth isolating member located on the image side of the fourth lens and in contact with a portion of the image-side surface of the fourth lens; and A lens barrel for housing the lens group and the at least one spacer; The optical system components satisfy the following conditions: -2.7917≤d0m / f5≤-1.7109, 5.8514≤D0m / R10≤10.9546, 4.6629mm≤R9×(D4s+d4s) / f4≤27.2930mm, 46.0000°≤SemiFOV≤51.5000°, -42.3443≤(R4+R6) / (D2s-d3s)≤-10.5028 and -16.3942mm≤(R7-R5)×EP34 / T34≤-5.8223mm, where f4 is the effective focal length of the fourth lens, f5 is the effective focal length of the fifth lens, R9 is the radius of curvature of the object-side surface of the fifth lens, R10 is the radius of curvature of the image-side surface of the fifth lens, and d4s is the effective focal length of the fourth lens. The inner diameter of the object-side surface of the isolator, D4s is the outer diameter of the object-side surface of the fourth isolator, D0m is the outer diameter of the image-side end of the lens barrel, d0m is the inner diameter of the image-side end of the lens barrel, SemiFOV is half of the maximum field of view of the optical system assembly, R4 is the radius of curvature of the image-side surface of the second lens, R6 is the radius of curvature of the image-side surface of the third lens, D2s is the outer diameter of the object-side surface of the second isolator, d3s is the inner diameter of the object-side surface of the third isolator, R5 is the radius of curvature of the object-side surface of the third lens, R7 is the radius of curvature of the object-side surface of the fourth lens, EP34 is the distance between the image-side surface of the third isolator and the object-side surface of the fourth isolator along the optical axis, and T34 is the air gap between the third lens and the fourth lens along the optical axis.

2. The optical system component according to claim 1, characterized in that, The at least one isolating member further includes a first isolating member located on the image side of the first lens and in contact with the image side surface portion of the first lens. The optical system component satisfies: 2.1055≤TAN(SemiFOV)×f / (D1s-d1s)≤9.3471, where f is the total effective focal length of the optical system component, d1s is the inner diameter of the object side of the first isolator, and D1s is the outer diameter of the object side of the first isolator.

3. The optical system component according to claim 1, characterized in that, The at least one isolating member further includes a first isolating member located on the image side of the first lens and in contact with the image side surface portion of the first lens. The optical system components satisfy: -47.1160≤R2 / d0s-f1 / EP01≤-2.0780, where f1 is the effective focal length of the first lens, EP01 is the distance between the object-side end of the lens barrel and the object-side surface of the first isolator along the optical axis, R2 is the radius of curvature of the image-side surface of the first lens, and d0s is the inner diameter of the object-side end of the lens barrel.

4. The optical system component according to claim 1, characterized in that, The at least one isolating member further includes a first isolating member located on the image side of the first lens and in contact with the image side surface portion of the first lens. The optical system components satisfy: 0 < |f2 / d1m×R1 / D1m| < 15, where d1m is the inner diameter of the image-side surface of the first isolator, D1m is the outer diameter of the image-side surface of the first isolator, R1 is the radius of curvature of the object-side surface of the first lens, and f2 is the effective focal length of the second lens.

5. The optical system component according to claim 1, characterized in that, The optical system components satisfy: 13.0006≤(f3×N3+f4×N4) / EP34≤24.9843, where f3 is the effective focal length of the third lens, f4 is the effective focal length of the fourth lens, N3 is the refractive index of the third lens, N4 is the refractive index of the fourth lens, and EP34 is the distance between the image side of the third isolator and the object side of the fourth isolator along the optical axis.

6. The optical system component according to claim 1, characterized in that, The optical system components meet the following requirement: 20.8119mm -1 ≤V2 / d3m+V3 / D3m≤24.2889mm -1 Wherein, V2 is the Abbe number of the second lens, V3 is the Abbe number of the third lens, d3m is the inner diameter of the image-side surface of the third isolator, and D3m is the outer diameter of the image-side surface of the third isolator.

7. The optical system component according to claim 1, characterized in that, The at least one isolator further includes an auxiliary isolator located on the image side of the fourth isolator and in contact with the image side portion of the fourth isolator. The optical system components satisfy the following condition: 36.4362mm≤(D4bm-d4bm)×CT5 / CP4b≤86.8356mm, where d4bm is the inner diameter of the image-side surface of the auxiliary isolator, D4bm is the outer diameter of the image-side surface of the auxiliary isolator, CT5 is the center thickness of the fifth lens on the optical axis, and CP4b is the maximum thickness of the auxiliary isolator.

8. The optical system component according to claim 1, characterized in that, The optical system components satisfy: 6.4475≤(D3s+D4s) / (CP3+EP34+CT4)≤8.9890, where D3s is the outer diameter of the object side of the third isolator, D4s is the outer diameter of the object side of the fourth isolator, CT4 is the center thickness of the fourth lens on the optical axis, CP3 is the maximum thickness of the third isolator, and EP34 is the distance between the image side of the third isolator and the object side of the fourth isolator along the optical axis.

9. The optical system component according to any one of claims 1-8, characterized in that, The refractive index of all lenses from the first lens to the fifth lens is greater than 1.5.

Images