TWM354745U - Photographic lens and photographic device - Google Patents

Description

M354745 V. New description: [New technical field] This creation is about photographic lens and photography, especially one using CCD (Charge Coupled Device) ^ CM〇S (C〇ffiplementary

Metal 〇xlde Semiconductor), such as a camera for vehicle-mounted camera terminal, and a photographic lens used for monitoring phase (4), and an imaging device including the photographic lens. [Prior Art] In recent years, the miniaturization and high image formation of photographic elements such as CCD or CMOS have been developed. At the same time, the size of the photographic device body including these photographic elements has been reduced, and the photographic lens mounted thereon has been required to be smaller and lighter in addition to good optical performance. On the other hand, for automotive cameras or surveillance cameras, for example, a bright optical system with a 15 F value of 2.0 'has high weather resistance, = outdoor in the cold region, and summer in the tropics. A low-cost wide-angle lens used within the temperature range of the domain. The pre-patent UH) describes a photographic lens in which a third lens, a third lens, a fourth lens, a fifth lens J, and an eighth lens are joined in order from the object side, and a wide angle is obtained. [Pre-patent 1] US Patent No. 7023628 [PATENT 2] Patent Publication No. 4_683〇7 Bulletin [Patent Pre-Case 3] Special Opening No. 71597 [Preliminary Patent No. 4] JP-A-62-36622 Bulletin M354745 [Patent Case 5] Pending Gazette No. 3938143 [Patent Document 6] Special Publication No. 2004-177435 [Patent Document No. 7] Special Publication No. 2007-108614 [Patent Case 8] Special Opening 2 Japanese Patent Laid-Open Publication No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. 2003-232998. When using the plan, the 10 15 20 1 π vehicle lens valley is prone to A (four) image 2 (distorted aberration). Distortion is like money, and the image of the photo is compressed and imaged, so the joint boat is dry n逯4 repentance ^ s Μ 即使 即使 即使 即使 即使 即使 即使 即使 即使 即使 即使 即使 即使 即使 ' ' ' 与 与 与 与 与 与 与 与 与 与 与 与 与 与 与 与Low problem. In addition to the above expectations, it is a good image to obtain a good image, and it is required to correct the distortion aberration. However, since the photographic lenses described in Patent Document 2 are all composed of a spherical lens, it is difficult to satisfactorily correct the distortion aberration. Although the photographic lens described in Patent Document 3 has an aspherical lens, the first reading of the distortion aberration is based on ▲ in the left-handed servant - the lens is not an aspherical lens, so the correction of the distortion aberration insufficient. In addition, the photographic lens described in Patent Documents 4 and 5 has a large F value, and is a dark optical system suitable for an on-vehicle camera or a surveillance camera. The photographic lens described in Patent Nos. 6, 7 is insufficiently wide-angled and is not suitable for use in an in-vehicle camera or a surveillance camera. The photographic lenses described in Patent Nos. 8 and 9 use a three-piece aspherical lens, so that the cost is higher when the glass is made, and when the plastic is made, the performance is less stable due to the temperature change. 25 M354745 The non-spherical photographic lens uses the lenticular lens as the lens, for example, when it is applied to a vehicle-mounted camera or a two-in-one aspherical lens, the second lens is the largest diameter except for the cost. The lens, if it is used as an aspherical glass lens, will greatly increase the cost. [New content] The present invention has been developed in view of the above circumstances, and its object is to provide a photographic lens having a 10 F value which is small at a wide angle and which can maintain good optical performance and obtain a good image from the corners of the image. And an imaging device including the photographic lens is provided at a low cost. The first photographic lens of the present invention is characterized in that, from the object side, 15 is provided: a meniscus-shaped first lens having a negative refracting power and having a concave surface toward the imaging side, and the first lens 'the imaging side thereof is in the light While the vicinity of the shaft is concave, at least the surface is aspherical; the third lens has a positive refracting power and a light barrier; the cemented lens has a positive diopter through the joint, and has a positive diopter. The fourth lens and the fifth lens are formed and have a positive refractive power; the sixth lens has a positive refractive power of 20 degrees from the same day to J/ one side is aspherical, and the third lens is made of glass W. When the Abbe number of the d-line of the second lens is set to 3, the following conditional expression (1) is satisfied: γ 3 < 30 (1). In the first photographic lens of the present invention, by appropriately selecting the structure of each lens and appropriately arranging a small number of aspherical lenses, the M354745 is reduced in cost, and the distortion image is satisfactorily corrected while seeking a small F. Value, wide angle, and poor aberrations. 5 10 15 Lieb, the first secluded (four) mirror 1 of this creation constitutes the same day with the conjugate lens, and the Abbe number of the third lens satisfies the conditional expression (1), and the magnification chromatic aberration is corrected. If the chromatic aberration of magnification is left, the resolution is lowered. Therefore, it is effective to satisfactorily correct the chromatic aberration of magnification in order to obtain a good image to the corners of the image. The second photographic lens of the present invention is characterized in that, from the object side, the first lens of the meniscus shape has a negative refracting power and the two faces the imaging side 'second lens' which is near the optical axis. a biconcave shape having at least one side aspherical shape; a third lens having a positive refracting power; a light rest; a cemented lens that transmits a fourth lens having a positive refracting power and a negative refracting power; The fifth lens is formed and has a positive refracting power as a whole; the sixth lens has a positive refracting power, and at least: is an aspherical shape, and the effective f » of the image forming side surface of the first lens is ED When the radius of curvature of the surface on the imaging side of the first lens is R2, the following conditional expression (2) is satisfied: 1.65 < ED / R2 < 2. 〇 (2). In the second photographic lens of the present invention, by appropriately selecting the configuration of each lens, the conditional expression (2) is appropriately set, and a small number of aspherical lenses are appropriately disposed, and a small F value is obtained while reducing the cost. Wide angle, and good correction of aberrations including distortion aberrations. The third photographic lens of the present invention is characterized in that a first lens having a shape of a moon is provided in order from the object side, which has a negative refracting power and a concave surface 20 M354745 lens which has a biconcave shape in the vicinity of the optical axis and at least = = spherical shape 'and is constructed in such a way that the effective diopter of the face on the image side is weaker than the center according to the negative diopter; the third lens 'has a straight positive yaw, the light barrier; the cemented lens' 50% of the fourth lens and the fifth lens having a negative diopter and the positive yield of the light; the sixth lens 'having a positive curvature=two at least the surface of the imaging side is aspherical, according to The image forming surface = convex shape in the vicinity of the surface 2, and the positive diopter is in the effective diameter end weak form == formula ' or the surface on the imaging side is convex in the vicinity of the optical axis and has a negative diopter at the effective diameter end. Way composition. In the second photographic lens of the present invention, a small number of aspherical lenses are appropriately arranged by appropriately selecting the configuration of each lens, and the 'I spherical I shape' is appropriately set to achieve a low cost while achieving a small F value. , wide angle, and good correction of aberrations including distortion aberrations. * In the third and third photographic lenses of the present invention, the material of the third lens is preferably glass. < In addition, in the photographic lens of the present invention, the focal length of the entire system is f, and the light from the object-side surface of the first lens to the imaging surface is set to L, and the sixth lens is used. When the distance from the image side to the optical axis of the image plane is set to Bf, the following conditional expressions (7), (4): 14.0< L/f < 21.0 ... (" 1.3 < Bf / f <; 2.0 ... (4)., f outside 'In the photographic lens of the present invention, preferably the negative diopter is weaker than the center at the effective diameter end of the image side of the first lens. 20 M354745

The preferred configuration is: the above-mentioned & shape, positive diopter No. 97217116, and the 97-year-old revision page. In addition, in the photographic lens of the present invention, the object-side surface of the sixth lens is effective near the optical axis. The trail is weaker than the center. Further, in the photographic lens of the present invention, it is preferable that the imaging side surface of the sixth lens has a convex shape in the vicinity of the optical axis, and the positive refractive power is weaker than the center at the effective diameter end. Further, in the photographic lens of the present invention, the lens having the positive refracting power constituting the cemented lens is preferably two convex shapes. In the present photographic lens, the lens having the negative refracting power constituting the cemented lens preferably has a biconcave shape. Further, in the present invention, the focal length of the entire system is set; f. When the composite focal length of the first lens and the second lens is set to fl2, it is preferable to satisfy the following conditional expression (5): 2.0<f12/f< ... ( 5 ). 15 20 In addition, the focal length of the entire system is set in the photographic lens of this creation.

Li, when the focal length of the third lens is set to f3, it is preferable to satisfy the following conditional expression (6): 4. 〇 <f3/f < 8.0 (6). ^ In the photographic lens of the present invention, the focal length of the entire system is set to =, and the combined focal length of the fourth lens and the fifth lens is set to be, preferably, the following conditional expression (7) is satisfied. 6 < f45 /f<14 ·.. (7). 9 M354745 'When the focal length of the whole system is set to f2', it is preferable to satisfy the following. In the photographic lens of the present invention, the focal length of the second lens is set to conditional expression (8): (8 3.5 < f2 /f< One 2.2 ... 5

In addition, in the photographic lens of the present invention, the distance from the regular surface of the third lens to the optical axis of the optical barrier is set to %, and the ray is the distance on the optical axis of the fourth lens. When it is set to 〇7, it is preferable to satisfy the following conditional expression (9): 〇.〇<D7/D6<0.5 (9). Further, in the photographic lens of the present invention, it is preferable that the refractive index of the d-line of the first lens is set to "the case" (1〇): 1.70 < N! < 1.90 .. (1〇). Further, in the photographic lens of the present invention, the Abbe number of the line of the lens having the positive refracting power constituting the cemented lens is set to ^, and the d line of the lens having the negative refracting power constituting the cemented lens is formed. When the number of shells is set to ^, it is preferable to satisfy the following conditional formula (ii), (a): 30 > yn ... (11) γ p > 35 (12) 〇 In addition, in the photographic lens of the present creation When the optical surface _LD of the imaging side surface of the first lens and the curvature radius of the imaging side surface of the first lens are R2, it is preferable to satisfy the conditional expression (1) of τ: 1.7 < LD /R2< 2_〇... ( 13 ). Further, in the photographic lens of the present invention, the material of the second lens is preferably plastic. ' 10 M354745 In addition, the photographic lens in this creation is made of plastic. The material of the lens and the lens should be described. In addition, in this creation, 卞τ regards the effective diameter as the diameter. In addition, the first face control is the optical path diameter of an optical reading material such as &, 尤 especially the area where the lens surface acts. In the lens made of t, the diameter of the polished surface needs to be explained. In the present creation, "the light that effectively passes through the outermost zero point of the total ray of each lens surface intersects with each lens surface" The positive diopter has a positive dioptric value that is smaller than the center phase at the effective diameter end, and the effective diameter end is the positive diopter at the effective diameter end. Similarly, "negative refraction == at the center" means that at the effective diameter end, there is a negative diopter that is smaller than the center, or a positive yaw at the effective diameter end. Light ID °J 〇 It should be noted that the sixth lens in this creation, "having a positive diopter, means not only determined by the radius of curvature of the paraxial axis, but by the effective and effective When the light beam of the optical axis of the same diameter is incident on the sixth lens, the light beam emitted from the six-lens lens becomes a concentrated light beam. In the case of the above-mentioned L and Bf, the distance converted by the air is used for the back focus loss. Further, among the values of the above conditional expressions (1) to (12), d and the present (wavelength: 587.6 nm) are used as the reference wavelength, and the d line is used as the reference wavelength as long as there is no special requirement in the specification. M354745 The photographing apparatus of the present invention is characterized in that the photographing lens of the present invention and the photographing element which is an electric signal to be described in (4) through (4). The first photographic lens according to the present invention is selected as the first photographic lens according to the present invention, and the aspherical lens is appropriately arranged in at least the lens system.

The configuration of the mirror is such that it satisfies the conditional expression (1), and the turbidity and the wide-angle servant can be set at a low cost, while achieving a small F-positive (four) preparation, while maintaining good optical performance, especially Good to make up. : Aberration and distortion aberrations, get a good image to the corners of the image. The first photographic lens that was created in this creation is appropriately configured with a small number of aspherical lenses in at least five groups of six pieces, so that it is composed of ", 2, and appropriate Since the configuration of each lens is set, the cost can be reduced, and while maintaining a small F value and wide angle, the optical performance of 15 20 can be maintained. In particular, the distortion can be corrected well, and the image angle can be obtained. All are good images. According to the third photographic lens of the present invention, since a small number of aspherical lenses are appropriately disposed in a lens system of at least five groups of six, the aspherical shape is appropriately set and the configuration of each lens is appropriately set. Therefore, while achieving low cost, while maintaining a small F value and wide angle, while maintaining good optical performance, the distortion aberration can be satisfactorily corrected, and an image with good image corners can be obtained. [Embodiment 12] M354745 The present embodiment will be described in detail with reference to the accompanying drawings. First, let's talk about the way. The embodiment of the % lens, and then the lens diagram of the photographic lens 1 of the embodiment of the present invention will be described. Fig. 1 / (4) Day... shows the light on the axis 2 and the light on the underside of the shaft. The configuration example shown in Fig. 1 corresponds to the following: The lens configuration of the first embodiment. Further, Fig. 5 to Fig. 12 are cross-sectional views showing lenses of another configuration example of the lens of the present invention, which correspond to the lens configurations of the following embodiments 2 to 9. The base of the embodiment to 9 is the same. Therefore, the photographic lens 1 having the configuration shown in Fig. 1 will be mainly described below. 15 20, the photographic lens worker according to the embodiment of the present invention includes, in order from the object side, a meniscus U-shaped lens having a negative refracting power and a concave surface toward the imaging side; the second lens . , which has a biconcave shape in the vicinity of the optical axis, and at least the surface is aspherical, and the third lens L3 has a positive refracting power; the aperture diaphragm is; the bonding lens lc, the splicing lens has a positive The refracting power, the fourth lens L4 and the fifth lens L5 having the negative refracting power on the other side, and having a positive refracting power as a whole; the sixth lens L6 having a positive refracting power and at least one side having an aspherical opening shape. It should be noted that the aperture light stop in the item 1 does not indicate the shape or the size but represents the position on the optical axis Z. In Fig. 1, the case where the photographic lens is applied to the photographic apparatus is considered, and the image element 5 of the image plane of the pim including the imaging position of the photographic lens is also shown. Photographs: For: ^ The member 5 converts an optical image formed by a photographic lens into an electric ’ ', for example, a CCD image sensor or the like. Further, in the case where the photographing device is used, it is preferable to arrange a glass cover, a low-pass 5 15 20 f leather device, an infrared cut filter, a wave filter, etc., and these are arranged between the lens system and the photographing member 5. For example, when the photographic lens is used as a night vision auxiliary device, the parallel plate-shaped optical component 也 can also be used in the lens system and the photographic element: I external light to blue light filter. It is to be noted that any of the "wavelength cutoff systems" and the photographic elements 5 may be disposed between the respective lenses, such as a low-pass chopper or a chopper. Or it may have a photographic lens layer. The lens surface of the brother is implemented with the same effect as the various choppers: over=2 The mirror U is set to have a negative curvature toward the image side, and the convex surface of the object side of the lens L1 is captured. The light of the sergeant can widen the angle of the optical system while the 'angle' is easy to correct the curvature of the image of the entire wide-faced area. Compared with the first-permeability (four) of the meniscus shape which is formed by the second lens L2 having a biconcave shape, the second refracting power which is not too strong can be used to break the entire system. The refracting power has a strong transmission through the surface on the imaging side of the second lens L2. In addition, the amount of aberration occurrence is suppressed, and a positive lens which is incident at a large angle and can be subjected to a strong edge is used. The light is guided to 14 M354745, and at least one surface of the second lens L2 is aspherical, so that the aberrations can be satisfactorily corrected. In particular, the distortion can be satisfactorily corrected. As shown in Fig. 1, the surface of the second lens ^ that appropriately separates the on-axis ray 2 and the off-axis ray 3 is aspherical, which is advantageous for aberration correction, and is also easier to correct the distortion image. In the first lens L1, the on-axis ray 2 and the off-axis ray are separated from the off-axis, but the first passer's U = glass disposed closest to the object side is preferably made of a glass lens as described below. When the aspherical surface is formed, 10 15 ^ ^ and the first lens L1 is the lens having the largest diameter. Therefore, if the ^ is an aspherical glass lens, the cost is greatly increased. From these circumstances, it is understood that the second lens L2, which is often selected as the material of the present embodiment, is adapted to have an aspherical shape for lens production and aberration correction. The first lens L2 preferably has at least an aspherical surface on the imaging side. __, the light of the off-axis ray of the object side surface of the mirror L2: Therefore, in order to suppress the occurrence of aberration 4, it is preferable that the surface of the object side of the lens L2 W of the double concave shape does not have too strong refracting power, Therefore, in order to ensure the positive diopter, the diopter of the second lens [2 on the imaging side of the image is inevitably strong. By the surface of the imaging side having this strong refracting power, it is aspherical] The aberrations of the first lens L2 are preferably aspherical, and the aberrations are corrected in a good manner. The image side of the second lens L2 is aspherical. The image-side surface of the second lens is preferably concave in the vicinity of the light, and the negative refracting power is formed at the effective diameter end weaker than the center 20 M354745. According to this configuration, the light incident on the peripheral portion of the lens is not extremely extreme. It is possible to correct the distortion aberration well by bending. Therefore, the effective diameter end is a point at which the outermost light rays passing through the respective lens faces intersect with the respective lens faces. For example, as shown in FIG. Imaging of 5 cases in the first lens L1 In the surface of the surface, the point at which the outermost peripheral ray of the off-axis ray intersects the lens surface becomes the effective diameter end, and the diameter of the circle thus formed is the effective diameter ED. It is to be noted that FIG. 2 is as follows. A partially enlarged cross-sectional view of the imaging lens of the fifth embodiment. The imaging side surface of the second lens L2 has a concave shape in the vicinity of the optical axis, and the negative diopter is weaker than the center at the effective diameter end, and is described with reference to FIG. A configuration in which the effective diameter end has a negative refracting power (referred to as a first configuration). In the cross-sectional view of the photographic lens 所示 shown in FIG. 3, the effective diameter end of the imaging side surface of the second lens [2 is set to point χ2 When the parent point on the normal spear axis of the lens surface at the point is set to point ρ2, the length of the line segment ρ2_Χ2 of the joint point and the point 15 Ρ2 is set as the radius of curvature at the point χ2. The intersection of the imaging side surface of the second lens L2 and the optical axis ,, that is, the center of the imaging side surface of the second lens L2 is set as the point q2. The first configuration described above is that the point Ρ2 is located on the imaging side more than the point Q2. And the absolute value of the radius of curvature at point X2 is greater than the radius of curvature at point 卩2 The absolute value is also 20. Figure 3 is helpful to understand that the absolute value of the radius of curvature at the point (2 (the length of the line & Ρ2-Χ2) is set as the radius, and the point is 通过2, and the optical axis is drawn with a broken line. The upper point is set to the center circle CX2. In addition, the absolute value of the radius of curvature of the point is set to the radius, and the circle CQ2 with the point on the optical axis centered by the dot line 16 M354745 is drawn by the point XQ2. As shown in Fig. 3, the circle CX2 becomes a circle larger than the circle CQ2. Further, the image side of the second lens L2 is preferably concave in the vicinity of the optical axis, and contains a negative refracting power between the center and the effective diameter end. The configuration of the point which is stronger than the center of 5 (referred to as the second configuration). This is the same as the first configuration described with reference to Fig. 3. It can be considered as follows. In the lens cross-sectional view (marks X22, P22, and Q22 are not shown), When a certain point on the imaging side surface of the second lens L2 is χ22, and the intersection of the normal line of the point and the optical axis Ρ is Ρ22, the length of the line segment Ρ22_Χ22 connecting the point χ22 and the point 10 Ρ22 is set to The radius of curvature of point 22 . Further, the intersection of the image-side surface of the second lens L2 and the optical axis 又, that is, the center of the image-side surface of the second lens L2 is set as the point Q22. The second configuration described above is that the point P22 is located on the imaging side more than the point Q22, and the absolute value of the line segment P22_X22 is present between the center and the effective diameter end than the radius of curvature of the center of the face of the image forming side of the second lens [2' The absolute value is still small χ22. In the case where the surface on the object side of the second lens L2 is an aspherical surface, it is preferable that the optical lens has a concave shape in the vicinity of the optical axis, and the negative refractive power is weaker than the center at the effective diameter end. According to this configuration, the image surface chord can be satisfactorily corrected, and the image surface can be flattened, which is suitable as a lens for imaging a photographic element. Here, the object-side surface of the second lens L2 is configured such that the negative diopter is weaker than the center at the effective diameter end, and this configuration may also have a positive yaw at the effective diameter, and the degree may also be changed from the center on the way of the effective diameter end. The symbol 'of diopter' has a positive diopter at the effective diameter end. 17 M354745 ° The surface of the second lens L2 on the object side (4) The luminosity at the effective diameter end is weaker than the center □ and the diopter at == : (referred to as the third configuration). This is the same as the diagram; = 苐, which can be considered as follows. 5. In the lens cross-sectional view (marks χι, ρι, not shown), when the effective diameter end of the object-side surface of the first lens L2 is set to the point where the normal of the point 和 and the optical axis Z are set to (4) 'The length of the line segment P1-X1 connecting the point magic (four) 1 is set to the radius of curvature at the point X1. Further, the intersection of the object-side surface of the second lens L2 and the optical axis 2, that is, the center of the object-side surface of the second lens L2 is set as a point q. The third configuration is that the point P1 is more than the point Q1. Located on the object side, and is the curvature at the point X1. The absolute value of the diameter (the length of the line segment Ρ1_Χ1) is larger than the absolute value of the radius of curvature at the point qi. Next, the object-side surface of the second lens L2 has a concave shape of 15 in the vicinity of the optical axis, and a sign of changing the diopter from the center on the effective diameter end, and a configuration having a positive refracting power at the effective diameter end (referred to as a fourth configuration) The point P1 defined in the above description of the third configuration is located on the imaging side more than the point Q1 at the intersection of the object-side surface of the second lens L2 and the optical axis Z. According to the fourth configuration, since the positive 2 〇 diopter at the effective diameter end can be effectively utilized, the image plane can be obtained, and the image plane curvature can be corrected well, and the image plane can be flattened, and the peripheral drawing value can be improved. Therefore, it is suitable as a lens for imaging a photographic element. The third lens L3 may be a meniscus shape having a convex surface toward the object side or a double convex shape. 18 M354745 An example shown in Fig. 1 is a cemented lens LC formed of a fourth lens L4 having a positive refracting power and a fifth lens L5 having a negative refracting power. The lens having a positive refracting power constituting the cemented lens LC is preferably two convex shapes, and the lens having a negative refracting power is preferably a double concave shape, and thus, 5 is a cemented lens composed of a double convex lens and a double concave lens. It can enhance the diopter of each lens and is beneficial to the correction of chromatic aberration (also called chromatic aberration). Further, in the cemented lens LC, it is preferable to arrange a lens having a positive refracting power on the object side. In the configuration of the present embodiment, the cemented lens Lc is disposed directly behind the aperture stop st. For example, in the case of an in-vehicle camera or a camera, the F value is preferably a bright lens system of 20 纟 right. In such a bright lens system, the arrangement of the positive and negative lenses that engage the lens is opposite to that of the present embodiment, and when the lens having a negative refracting power is disposed on the object side, imaging of a lens having positive refracting power may be generated. The light level on the side surface becomes high and the edge of the positive lens 15 is not sufficiently obtained. The sixth lens L6 transmits at least one surface to an aspherical surface, and can correct various aberrations satisfactorily. In the sixth lens L6, it is preferable that at least the surface on the image forming side has an aspherical shape. Similarly to the second lens L2, since the on-axis ray 2 and the off-axis ray 3' are appropriately separated in the sixth lens 所以, the surface of the lens of the sixth permeable mirror L6 is aspherical, which is advantageous. Aberration correction. - When the surface on the sixth lens L6 (four) body side is aspherical, it is preferable that the object side surface of the sixth lens L6 has a convex shape in the vicinity of the optical axis, and the positive refractive power is weaker than the center at the effective diameter end. . According to such a configuration, "Yiliang 19 M354745 can correct the curvature of the image surface well, and the image plane can be flattened" as a lens for imaging the imaging element. The object-side surface of the sixth lens L6 is convex in the vicinity of the optical axis, and the positive refractive power is weaker than the center at the effective diameter end and has a positive refractive power at the effective diameter end (referred to as a fifth configuration). This is the same as the first configuration described in the figure, and can be considered as follows. In the lens cross-sectional view (marks X3, p3, and Q3 are not shown), the effective diameter end of the object-side surface of the sixth lens L6 is set to point χ3, and the normal line at the point and the optical axis Ζ are intersected. When the point ρ3 is set, the length of the line segment Ρ3-Χ3 connecting the point χ3 and the point ίο Ρ3 is set to the radius of curvature of the point χ3. Further, the intersection of the object-side surface of the sixth lens L6 and the optical axis 又, that is, the center of the object-side surface of the sixth lens L6 is referred to as a point Q3. The fifth configuration described above is that the point P3 is located on the imaging side more than the point Q3, and the absolute value of the line segment ρ3·χ3 is greater than the absolute radius of curvature of the center of the surface on the object side of the sixth lens L6. When 〇 and jws are aspherical, it is preferable that the image side of the sixth lens L6 has a convex shape in the vicinity of the optical axis, and the positive yoke 20 luminosity is weaker than the effective diameter end. According to such a configuration, it is possible to acoustically correct the curvature of the image plane, which can flatten the image surface. Stomach ~ force here, the imaging side of the sixth lens L6 is configured to have a negative refractive power at the effective diameter end weaker than the center 'this configuration can also have positive at the effective diameter end: diopter, or can be from the center at the effective diameter The diopter number is changed on the way to the end and has a negative diopter at the effective diameter end. Another 20 M354745 shows that the image side of the sixth lens L6 has a convex shape near the optical axis, the positive diopter is weaker than the center at the effective diameter end, and has a positive diopter at the effective diameter end (referred to as the sixth Composition). This is the same as the first configuration explained with reference to Fig. 3, and can be considered as follows. 5 In the lens cross-sectional view (marks X4, P4, and Q4 are not shown), the effective diameter end of the image side of the sixth lens L6 is set to point χ4, and the normal line at the point and the optical axis ζ When the point is set to point Ρ4, the length of the line segment Ρ4_Χ4 connecting the points χ4 and Ρ4 is set to the radius of curvature at the point χ4. Further, the intersection of the image-side surface of the sixth lens L6 and the optical axis 又, that is, the center of the image-side surface of the sixth lens L6 is set as the point Q4. The sixth configuration described above is that the point Ρ4 is located on the object side more than the point Q4, and the absolute value of the line segment ρ4_χ4 is located on the imaging side more than the point of the intersection of the surface on the imaging side of the sixth lens L6 and the optical axis ζ. According to the seventh configuration, since the negative refracting power at the effective diameter end can be effectively utilized, the image plane can be obtained, and the field curvature can be corrected satisfactorily, the image plane can be flattened, and the surrounding image quality can be improved. Therefore, it is suitable as a lens for imaging a photographic element. In addition, 'the both surfaces of the sixth lens L6 are aspherical, and each surface is convex in the vicinity of the optical axis of the surface, and the positive refractive power is good when the effective 20 light end is weaker than the center. Correcting the curvature of the image plane can flatten the image plane and is suitable as a lens for imaging the imaging element. Here, in the imaging lens according to the embodiment of the present invention, when the Abbe number of the third lens L3 to the d line is set to 3, it is preferable to satisfy the conditional expression 21 M354745 γ 3 < 30 ... (1) The third lens L3 is disposed in the vicinity of the light-dense aperture diaphragm, and at the same time, is a lens that acts to converge the divergent light of the first lens u and the lens L2 Μ having a negative refracting power. By selecting the second:=L3 glass material to satisfy the conditional expression (1), the chromatic aberration of magnification can be corrected.

Further, in the imaging lens according to the embodiment of the present invention, when the effective diameter of the surface on the imaging side of the first lens L1 is Ε〇 and the radius of curvature of the imaging side surface of the first lens [I is ～, It is preferable to satisfy the following conditional expression (2). 1.65 < ED / R2 < 2.0 (2) When the upper limit of the conditional expression (2) is exceeded, the surface on the imaging side of the first lens is almost hemispherical or hemispherical, so that it is difficult to process and the cost is increased by 15 s reason. When the lower limit of the conditional expression (7) is exceeded, the distortion aberration cannot be satisfactorily corrected. Furthermore, it is preferable that the imaging lens according to the embodiment of the present invention satisfies the following conditional expression (2-1), and in this case, it is possible to suppress a further increase in cost and to correct the distortion aberration satisfactorily. 1.70< ED/R2 < 1.95 (2-1) ^ In addition, the photographic lens according to the embodiment of the present invention sets the focal length of the entire system to f, and the surface of the object side of the first lens L1 to When the distance on the optical axis of the imaging surface is L and the distance from the imaging side surface of the sixth lens L6 to the optical axis of the imaging surface is Bf, it is preferable to satisfy the following conditional expressions (3) and (4). 〇22 M354745 l4.0<L/f<21.〇... (3) 1.3<Bf/f<2.0 (4) When the upper limit of conditional expression (3) is exceeded, the overall length becomes longer so that the system Large size. 5 15 20 When the lower limit of the part f(3) is exceeded, the focal length of the whole system is too long and the wide angle is insufficient. In order to achieve wide angle, the image angle around the distortion aberration is ensured, and the image periphery is transmitted through the distortion aberration. The distortion becomes bigger. Or the overall length is too short, and the thickness of each lens is thinner and difficult to process. Preferably, the distance from the object-side surface of the first lens L1 to the optical axis of the image plane is preferably less than or equal to 21 or less. > In addition, when the full angle of view on the diagonal of the photographic element 5 is set to be wide-angled, 2ω is preferably 140 degrees or more. Here, as shown in Fig. 2, 2ω is an angle formed by the chief ray of the lower off-axis ray 3 and the upper off-axis optical line 4 incident on the first lens L1. When the upper limit of the conditional expression (4) is exceeded, the back focus becomes too long, so that the system is enlarged. When the lower limit of the conditional expression (4) is exceeded, the back focus becomes too short, and it is difficult to insert a glass cover or various ferrites between the lens system and the photographic element. Further, in the photographic lens according to the embodiment of the present invention, the focal length of the entire system is f, and the combined focal length of the first lens u and the second lens L2 is f 1 2 rj*, preferably satisfied. When the condition of the upper limit of the conditional expression (5) is exceeded, the wide angle can be easily achieved, but the curvature of the image becomes large, and it is difficult to obtain a good image. The lower limit of the conditional expression (1) 23 M354745 The diopter of the two negative lenses becomes weaker, so that the wide angle is achieved or the widest angle is achieved when the wide angle is achieved, and the light is not strongly bent and is difficult to be formed. In the photographic lens, the focal length of the system according to the embodiment of the present invention is set to f, and the focal length of the third lens L3 satisfies the following conditional expression (6). ο 4.U<f3/t< 8.0 When the upper limit of the conditional expression (6) is exceeded, the refractive error of the =J-edge mirror L3 becomes weak, and it is difficult to correct the chromatic aberration of magnification. When the lower limit of the phantom protection type (6) is exceeded, the diopter of the 10th lens L3 becomes too strong, the needle is low, and the smear is smeared. The sensitivity to the eccentricity becomes high, and the peak x is applied. When the focal length of the entire system is f and the combined focal length of the fourth lens u and the fifth lens 仏 is 仏5, it is preferable to satisfy the following conditional formula (?). When the upper limit of the conditional expression (7) is exceeded, the refracting power of the cemented lens LC becomes too weak, and it is difficult to satisfactorily correct the chromatic aberration. When the lower limit of the conditional expression (7) is exceeded, the refracting power of the positive lens in the cemented lens LC becomes too strong, so that the radius of curvature of the lens becomes small and it is difficult to process. In the photographic lens of the embodiment of the present invention, when the focal length of the entire system is f and the focal length of the second lens L2 is &, the following conditional expression (8) is preferably satisfied. . -3.5 <f2/f<-2.2 ··· (8) When the upper limit of the conditional expression (8) is exceeded, it is difficult to correct the spherical aberration well. 24 M354745 It is difficult to realize a bright optical system with a small F value. When the lower limit of the conditional expression (8) is exceeded, the negative refractive power of the second lens L2 becomes weak, and it is difficult to widen the angle. Further, in the photographic lens according to the embodiment of the present invention, the distance from the imaging side surface of the third lens L3 to the optical axis of the aperture stop St is set to

When Dp sets the distance from the aperture stop St to the fourth lens L4 to 仏, it is preferable to satisfy the following conditional expression (9). Υ.υ<^ υ7/υ6< 0.5 ·.

By satisfying the conditional expression (9), the aperture stop St is closer to the fourth lens L4 than the third lens L3, and in the first lens L1 to the third lens u, the on-axis beam 2 and the off-axis beam 3 can be separated, which is easy Correct the distortion aberration. Further, in the photographic lens according to the embodiment of the present invention, when the refractive index of the d-line of the first lens L1 is set to %, the conditional expression (10) is preferable. 10) 1· /〇< Nj < 1.90 15 20 The upper limit of the cost type (1〇) is the high-priced material, which is the reason. In addition, in the optical materials that can be used at present, the wider the upper limit of the formula: : (〇), the higher the refractive index becomes, the Abbe number aberration, ': the material needs to use a small Abbe number. It is difficult to correct the color of the magnification = ΓΓ '(10), because the refractive index of the material is too low to force, or to obtain the necessary diopter, it is difficult to cause the shape of the surface of the image side to have a small radius of curvature. In the embodiment of the present invention, the positive photographic lens of the cemented lens IX has a Abbe number 25 M354745 for the d-line which constitutes the lens of the prior degree, and is yP, and has a negative relationship constituting the cemented lens lc. When the Abbe number of the d-line of the diopter lens is Υ η, it is preferable to satisfy the following conditional expressions (丨丨) and (12). 30> γ π ...(11 ) 5 Vp>35·.. (12) The axial chromatic aberration and the magnification chromatic image can be satisfactorily corrected by selecting the material of the cemented lens so that the conditional expressions (n) and (12)' are satisfied. difference. Further, in the imaging lens according to the embodiment of the present invention, when the optical surface diameter of the imaging side surface of the first lens is LD and the curvature radius of the imaging side surface of the first 10 lens is h, It is preferable to satisfy the following conditional expression (13).

1.7 < LD/R2 < 2.0 (13) The optical surface diameter is the diameter of the region acting as the optical lens surface. In the present embodiment, as shown in Fig. 2, The surface on the imaging side of one lens L1 and the surface on the object side of the second lens are elongated, and the diameter of a circle formed by the intersection of the two is defined as the optical surface diameter LD. When the upper limit of the conditional expression (13) is exceeded, the surface on the image forming side of the first lens has a shape exceeding the hemisphere, so that it is difficult to process the product. When the lower limit of the conditional expression (13) is exceeded, the distortion aberration cannot be satisfactorily corrected. The photographic lens involved in the circumstance of the creation of the present invention is preferably set to f when the focal length of the entire cymbal is set to f, jiang flute ^ τ , ^ , and the center thickness of the first lens L1 is set. The conditional expression (丨4). 0.55 <D]/f ··· (μ) 26 M354745 For example, when used as a vehicle lens or the like, the strength of the first lens L1 for various impacts is required. When the lower limit of the conditional expression (14) is exceeded, the first lens becomes thin and is easily split. Therefore, it is more preferable that the center thickness Di of the first lens L1 is 0.8 mm or more. In the photographic lens according to the embodiment of the present invention, when the focal length of the first lens L1 is fi and the focal length of the second lens is 込, it is preferable to satisfy the following conditional expression (15). 2.5<f, /f2< 4.〇... (15) When the upper limit of the conditional expression (15) is exceeded, the diopter 1 of the first lens L1 becomes too weak, and it is difficult to achieve wide angle, or the first lens L1 Large size. Exceeding the lower limit of conditional expression (15), it is difficult to correct coma aberration and field curvature. Further, in the imaging lens according to the embodiment of the present invention, when the focal length of the entire system is f and the curvature half of the surface of the object side of the first lens L1 is R1, it is preferable to satisfy the following conditional expression ( 16). When the upper limit of the conditional expression (16) is exceeded, the radius of curvature of the surface of the object side of the first lens L1 becomes too large, and the light of the light is sharply bent at the periphery, so The distortion aberration becomes larger. When the lower limit of the conditional expression (16) is exceeded, the radius of curvature of the surface on the object side of the first lens L1 becomes too small, and it is difficult to achieve wide angle. In the case where the present photographic lens is used in a severe environment such as a vehicle-mounted camera, the first lens L i disposed closest to the object side is preferably subjected to surface cracking due to wind and rain, and direct sunlight. It is made of wheat, and is resistant to chemicals such as grease and detergents, that is, materials with a high water resistance of 27 M354745, high weather resistance, high acid resistance, and high chemical resistance. Further, as the material of the first lens Li disposed closest to the object side, it is preferable to use a hard, non-cleavable material. From the above, as the material of the first lens L1, specifically, glass is preferably used, or a transparent ceramic can be used. Ceramics have higher strength and higher heat resistance than ordinary glass. As the material of the second lens L2 and the sixth lens L6, plastic is preferably used. By using the material of the second lens L2 and the sixth lens L6 as plastic ‘, an aspherical shape can be produced with high precision. In addition, the use of plastics is cost-effective. As the material of the third lens L3, it is preferable to use glass, and in this case, deterioration in performance due to a change in temperature can be suppressed to a minimum. It should be noted that the material of the sixth lens L6 may be glass, so that deterioration of performance due to temperature change can be minimized. 15 . In addition, for example, when using the photographic lens of the present invention for a vehicle-mounted camera, it is required to use the photographic lens in a wide temperature range of a car in the outdoor region from the outdoor area to the tropical region in the cold region. It is used as a material for the lens in a wide temperature range. It is preferable to use a material with a small coefficient of linear expansion. 20 It should be noted that the light beam passing through the effective path between the lenses becomes stray light and reaches the image forming surface to become a ghost image. Therefore, it is preferable to provide a light blocking member that breaks the stray light as needed. As the light shielding member, for example, an opaque paint may be applied to the outer diameter portion of the image forming side of the lens, or an opaque plate material may be provided. In addition, it is also possible to provide an opaque plate in the optical path of a beam that becomes stray light. ^ ^ As an example, Figure 1 shows the first lens L1 and the second lens! ^ Imaging ′ On the side of the wind image side, an example of shading 28 M354745 parts 11, 12 is provided. It should be noted that the place where the light shielding member is provided is not limited to the example shown in Fig. 1, and may be provided between other lenses as needed. [Embodiment] Next, a specific numerical example of the photographing lens according to the present invention will be described. <Example 1 >

Fig. 4 is a view showing a lens configuration of the imaging lens according to the first embodiment. Table 1 shows lens data. In Fig. 4, the symbols Ri, Di (i == i, 2, 3. correspond to Ri, Di of Table 1. [Table 1] Example 1

7 (aperture light) 0.00

29 M354745 12* 3.16 1.44 64.2 13 〇〇0.50 1.5168 14 〇〇0.50 — 15 (imaging surface) 〇〇------ In the lens data in Table 1, the area number indicates the component closest to the object side. The surface is set to the first, and the second (di, 2, 3, ...) face numbers are sequentially added to the imaging side. It should be noted that the lens data included in the surface is also included with the aperture stop St and the optical member pp. The Ri of Table 1 is not the i-th (i = 1, 2, 3 faces of the radius of curvature, Di represents the i-th (i = i ' 2, 3...) faces and the i+1th face on the optical axis z In addition, Ndj indicates that the optical element closest to the object side is set to the refractive index of the jth (j = 1, 2, 3...) optical elements sequentially increasing toward the imaging side, ydj The Abbe number of the pair of optical elements is shown in Table 1. The unit of curvature radius and surface spacing in Table 1 is, and the radius of curvature is set to be positive when the object side is convex, and is set to be convex when the imaging side is convex. In the lens data of Table 1, the aspherical surface is marked with * on the surface number. Table 2 shows the coefficients κ and B3 of each of the 15 aspheric surfaces defined by the aspherical formula shown by the following mathematical formula 丨The value of B20. [Math 1]

Zh = + Σ BmYn 1 + (1~Κ·〇2Υ2) 1./2 _

Zh : aspherical depth (the length of the vertical line from the point on the aspheric surface of the height γ to the plane perpendicular to the optical axis in contact with the aspherical vertex) 30 M354745

Y : height (distance from the optical axis) C : reciprocal K, Bm of the paraxial radius of curvature: aspherical coefficient (m = 3 to 20) [Table 2] Example 1 Area No. Β B3 B4 B5 B6 B7 B8 ______ 3 -3.67Ε+01 2.38Ε-02 -3.31E-03 -1.68E-03 5.85E-04 -6.87E-05 1.97H-06 -1.62Ε+01 1.76Ε-01 -4.68E-02 1.65E-03 8.70E-04 1.12E-04 -6.74E-05 -4.73Ε+00 8.03Ε-03 2.19E-03 4.81E-04 3.52E-05 -2.76E-05 -1.88E-05 ---^ 12 - 9.31Ε+00 -3.59Ε-0 2 1.48E-02 2.05E-03 5.23E-06 -4.57E-05 -6.36E-06 Face No.Β9 Β10 B1 1 B12 B13 B14 B15 3 6.80Ε-08 1.12Ε- 08 1.98E-10 3.01E-12 8.32E-11 2.06E-11 -2.35E-13 .—-—" 4 1.02Ε-06 1.65Ε-07 I.62E-07 4.32E-08 -1.25E- 0 9 1.54E-11 4.17E-10 11 -7.77Ε-06 -2.45Ε-0 6 -5.54E-07 -4.53E-08 2.80E-08 1.36E-08 -4.55E-09 .^ 12 1.81Ε -06 8.54Ε-07 -9.89E-08 -3.36E-07 -2.44E-0 7 -1.26E-07 -5.41E-08 Face No. Β16 Β17 B18 B19 B20 -3.48Ε-12 8.22Ε-14 2.73E -14 5.46E-15 1.61E-16 ----—^ 4 -5.39Ε-10 5.33Ε-Ι1 1.61E-11 1.55E-12 -2.01E-1 2 11 -1.03Ε-08 -1.S0E -0 9 -7.61E-10 -3.03E-10 -1.03E-1 0 -1 12 -1.81 Ε-08 -7.57E-0 9 -1.08E-09 7.17E-10 9.58E-10 Table 3 shows various materials of the photographic lens according to the first embodiment. In Table 3, FNo· is an F value, ω is a half angle of view, and L is a distance from the object side surface of the first lens L1 of the entire system to the optical axis Z of the imaging surface (back focus 1 〇 distance air conversion) Bf is the air-converted back focal length, IH is the maximum image height 'LD is the optical plane diameter' ED is the effective diameter, f is the focal length of the whole system, fi is the focal length of the first lens L1 'h is the second lens L2 The focal length, f3 is the focal length of the third lens L3, h is the combined focal length of the cemented lens LC constituted by the fourth lens L4 and the fifth lens 31 M354745 L5, and is the focal length of the sixth lens w. In the various materials of Table 3, the unit of 'ω is degree, and the units outside fn〇 and all are mm. [Table 3] Example 1 FNo. 2.0 ω ------- 79.7 L 20.27 IH ~~~-- 2.40 Bf 2.3 LD 8.94 f 1.3 ED 8.72 fi -8.9 fl2 -1.9 f2 -3.3 f45 8.8 f3 7.3 Γ u 3.6

Table 4 shows the radii of curvature Ρ1_Χ1, ρ2·χ2, ρ3_χ3, ρ4_χ4 on the implanted end used in the above description of the aspherical shape, and the radii of curvature R3, R4, Ru, ri2 at the center of the corresponding face. 10 [Table 4] Example 1

Pl-Xl -61.12 R3 -10.21 P2-X2 3.25 R4 2.22 P3-X3 4.75 Rll 3.67 P4-X4 —^.78 R12 -3.16 It should be noted that the meanings of the symbols in the above description to Table 4 are as follows: The embodiments are also the same. <Example 2> 32 M354745 Fig. 5 shows a lens configuration diagram of the imaging lens according to Example 2, Table 5 shows lens data, Table 6 shows coefficients of each aspherical surface, Table 7 shows various data, and Table 8 shows various data. Effective path end and radius of curvature at the center. In Fig. 5, symbols Ri and Di correspond to Ri and Di of Table 5. 5 [Table 5] Example 2 No. Ri Di Ndj vdj 1 18.22 1.00 1.8348 42.7 2 4.68 2.82 3* -7.23 1.25 1.5316 55.4 4* 2.52 1.64 5 7.56 2.00 1.9229 18.9 6 -17.49 2.59 7 (Aperture diaphragm) 〇〇 0.00 8 5.34 3.00 1.8348 42.7 9 -3.50 1.04 1.9229 18.9 10 13.34 0.10 11* 3.75 2.21 1.5316 55.4 12* -2.88 1.27 13 〇〇0.50 1.5168 64.2 14 〇〇0.50 1 5 (imaging surface) 〇〇[Table 6] Example 2 Face number κ Β3 Β4 Β5 Β6 Β7 Β8 33

M354745 3 -2.96E+01 2.30E-02 -3.47E-03 -1.71E-03 5.80E-04 -6.92E-05 1.98E-06 4 -2.56E+01 1.72E-01 -4.76E-02 1.49 E-03 8.37E-04 1.05E-04 -6.86E-05 11 -5.35E+00 5.48E-03 2.29E-03 5.44E-04 4.72E-05 -2.91E-05 -2.12E-05 12 - 7.45E+00 -3.83E-02 1.47E-02 2.10E-03 2.73E-05 -4.05E-05 -5.82E-06 Face No. B9 B10 B1 1 B12 B13 B14 B15 3 9.22E-08 1.98E-08 2.36E-09 4.31E-10 1.37E-10 1.73E-11 -5.43E-12 4 7.90E-07 1.26E-07 1.65E-07 4.51E-08 -4.78E-10 6.14E-10 5.71E- 10 11 -9.29E-06 -3.31E-06 -9.42E-07 -1.89E-07 -2.86E-08 -7.43E-09 -1.20E-08 12 1.52E-06 5.94E-07 -2.42E- 07 -4.03E-07 -2.73E-07 -1.38E-07 -5.86E-08 Face No. B16 B17 B18 B19 B20 3 -5.66E-12 -5.65E-13 -1.03E-13 3.55E-15 1.53E -14 4 -4.69E-10 7.49E-11 2.24E-11 3.52E-12 -1.93E-12 11 -1.29E-08 -2.73E-09 -1.16E-09 -5.12E-10 -2.31E- 10 12 -1.98E-08 •8.17E-09 -1.27E-09 6.62E-10 9.48E-10 [Table 7] Example 2 FNo. 2.0 ω 79.7 L 19.75 IH 2.40 Bf 2.1 LD 8.28 f 1.3 ED 8.11 f -7.8 fl2 -1.8 f2 -3.4 F45 11.0 f3 5.9 f6 3.5 5 [Table 8] Implementation 2

Pl-Xl -20.67 R3 -7.23 P2-X2 3.62 R4 2.52 34 M354745 P3-X3 5.22 R11 3.75 P4-X4 -9.51 sR12 -2.88 &lt;Example 3 &gt; Fig. 6 shows a lens of the photographic lens according to Example 3. The composition chart, Table 9 shows the lens data, Table 10 shows the coefficients of the respective aspheric surfaces, and Table u shows the various "' Table 12 shows the effective diameter creep and the radius of curvature at the center. In Fig. 6, the symbols Ri and Di correspond to Ri and m of Table 9. work

[Table 9] Example 3

35

M354745 [Table 〇] Example 3 No. K B3 B4 B5 B6 3 -6.69E+01 2.38E-02 -3.24E-03 -1.67E-03 5.88E-04 4 -2.09E+01 1.73E-01 -4.71E-02 1.62E-03 8.69E-04 11 -5.00E+00 8.25E-03 2.06E-03 4.98E-04 6.44E-05 12 -6.97E+00 -3.58E-02 1.51E-02 2.29E-03 8.62E-06 Face No. B7 B8 B9 B10 3 -6.82E-05 2.01E-06 5.78E-08 4.72E-09 4 1.15E-04 -6.57E-05 2.20E-06 6.94E-07 11 -7.94E-05 -8.00E-06 -2.31E-06 1.66E-07 12 -2.80E-05 -6.46E-06 -1.14E-06 -1.43E-06 [Table 11] Example 3 FNo. 2.0 ω 79.2 L 21.54 IH 2.40 Bf 2.2 LD 10.00 f 1.3 ED 9.42 fi -9.0 fl2 -2.0 f2 -3.5 F45 10.7 fs 6.9 f6 3.6 [Table 12] 36 M354745 Example 3 P1-X1 380.83 R3 -7.83 P2-X2 3.56 R4 2.59 P3-X3 4.26 R11 4.02 P4-X4 -185.25 R12 -2.81 &lt;Example 4 &gt; Fig. 7 is a view showing a lens configuration of a photographing lens according to Example 4, wherein Table 13 shows lens data, and Table 14 shows each The coefficients of the aspheric surface, Table 15 represent various data, and Table 16 shows the effective diameter end and the radius of curvature at the center. In Fig. 7, the symbols Ri and Di correspond to Ri and Di of Table 13. [Table 13] Example 4 No. Ri Di Ndj vdj 1 23.71 1.20 1.7725 49.6 2 6.34 4.18 3* -3.80 1.25 1.5316 55.4 4 * 3.78 1.87 5 7.24 2.00 1.8467 23.8 6 -44.66 4.88 7 (Aperture stop) 〇〇0.00 8 4.57 3.00 1.7130 53.9 9 -3.50 1.03 1.8467 23.8 10 9.21 0.10 11* 3.65 2.69 1.5316 55.4 12* -2.60 1.51 37 M354745 13 〇〇0.50 1.5168 64.2 14 〇〇0.50 15 (image surface) 〇〇[Table 14] Example 4

No. K B3 B4 B5 B6 3 -1.58E+01 2.10E-02 -3.22E-03 -1.64E-03 5.91E-04 4 -9.33E+01 1.65E-01 -4.71E-02 1.71E-03 9.14E-04 11 -5.15E+00 7.30E-03 2.21E-03 5.97E-04 6.64E-05 12 -1.06E+01 -5.82E-02 1.53E-02 2.51E-03 1.94E-06 No. B7 B8 B9 B10 3 -6.78E-05 2.02E-06 5.01 E-08 4.42E-09 4 1.18E-04 -6.50E-05 2.15E-06 5.88E-07 11 -1.86E-05 -1.42E -05 -3.51E-06 2.35E-06 12 9.94E-06 1.60E-06 -1.39E-06 -3.01E-06 [Table 15] Example 4 FNo. 2.0 ω 78.9 L 24.54 IH 2.40 Bf 2.3 LD 11.16 f 1.2 ED 10.93 fi -11.5 fl 2 -2.0 38 M354745 f2 -3.4 f45 14.7 f3 7.5 f6 3.4 [Table 16] Example 4

Pl-Xl -21.39 R3 -3.80 P2-X2 4.53 R4 3.78 P3-X3 4.19 Rll 3.65 P4-X4 5070.69 R12 -2.60 5 &lt;Example 5 &gt; Fig. 8 shows a lens configuration diagram of the photographic lens according to Example 5 Table 17 shows lens data, Table 18 shows the coefficients of each aspherical surface, Table 19 shows various data, and Table 20 shows the effective diameter end and the radius of curvature at the center. In Fig. 8, the symbols Ri and Di correspond to Ri and Di of Table 17. 10 [Table 17] Example 5 No. Ri Di Ndj vdj 1 33.30 1.00 1.7130 53.9 2 6.17 4.54 3 * -3.64 1.25 1.5087 56.0 4 * 3.69 1.69 5 6.89 2.00 1.8467 23.8 6 -36.70 5.11 7 (Aperture light 〇〇 0.00 39

M354745 bar) 8 4.67 3.00 1.7130 53.9 9 -3.50 1.03 1.8467 23.8 10 8.99 0.10 11* 3.42 2.77 1.5087 56.0 12* -2.36 1.42 13 〇〇0.50 1.5168 64.2 14 〇〇0.50 1 5 (image surface) 〇〇[Table 18] Example 5 No. K B3 B4 B5 B6 B7 B8 3 -1.43E+01 2.17E-02 -3.25E-03 -1.66E-03 5.88E-04 -6.85E-05 1.96E-06 4 -1.04E+ 02 1.65E-01 -4.73E-02 1.70E-03 8.95E-04 1.19E-04 -6.55E-05 11 -3.92E+00 6.70E-03 3.16E-03 8.65E-04 1.65E-04 1.85 E-05 -1.94E-06 12 -8.13E+00 -5.50E-02 1.66E-02 2.73E-03 2.55E-04 4.26E-05 2.18E-05 Face No. B9 B10 B1 1 B12 B13 B14 B15 3 6.14E-08 9.90E-09 6.90E-11 L35E-11 9.26E-11 2.36E-11 4.94E-13 4 1.45E-06 2.42E-07 1.70E-07 4.12E-08 -2.84E-09 - 6.46E-10 2.03E-10 11 -1.57E-06 -1.86E-07 2.61E-07 2.39E-07 1.23E-07 4.34E-08 4.20E-09 12 1.03E-05 3.50E-06 8.53E -07 6.35E-08 -6.08E-08 -4.08E-08 -1.56E-08 Face No. B16 B17 B18 B19 B20 3 -3.33E-12 1.03E-13 2.83E-14 4.61E-15 -3.10E- 16 4 -5.94E-10 4.37E-11 1.68E-11 3.55E-12 -8.99E-13 11 -7.82E-09 -9.90E-10 -3.72E-10 -3 .95E-11 8.94E-11 12 -1.47E-09 -7.39E-10 1.58E-09 1.69E-09 1.28E-09 5 [Table 19] 40 M354745 Example 5 FNo. 2.0 ω 79.4 L 24.75 IH 2.40 Bf 2.3 LD 11.23 f 1.2 ED 10.81 fi -10.8 fl2 -1.9 f2 -3.4 F45 16.1 f3 7 f6 3.3

[Table 20] Example 6

Pl-Xl -18.51 R3 -3.64 P2-X2 4.68 R4 3.69 P3-X3 3.45 Rll 3.42 P4-X4 19.46 R12 - 2.36 &lt;Example 6 &gt; Fig. 9 is a view showing a lens configuration of a photographic lens according to Example 6; Table 2 1 shows lens data, Table 22 shows the coefficients of each aspherical surface, Table 23 shows various data, and Table 24 shows the effective diameter end and the radius of curvature at the center. In Fig. 9, the symbols Ri and Di correspond to Ri and Di of Table 21. [Table 21] Example 6 No. Ri Di Ndj vdj 1 21.71 1.00 1.7725 49.6 41 M354745 2 5.88 3.76 3 * -6.42 1.25 1.5316 55.4 4 * 2.80 1.83 5 6.34 2.00 1.9229 18.9 6 41.95 3.00 7 (Aperture diaphragm) 〇〇 1.00 8 4.39 3.00 1.7130 53.9 9 -3.50 1.04 1.9229 18.9 10 -2917.72 0.10 11* 4.10 2.54 1.5316 55.4 12* -3.34 1.36 13 〇〇0.50 1.5168 64.2 14 〇〇0.50 15 (Imaging surface) 〇〇

[Table 22] Example 6 No. K B3 B4 B5 B6 Β7 Β 8 3 9.93E + 00 3.34E-02 -4.27E-03 -1.83E-03 5.70E-04 -6.96Ε-05 2.09Ε-06 4 - 1.54E + 01 1.90E-01 -4.19E-02 9.22E-04 5.54E-04 3.32Ε-05 -8.24Ε-05 11 -2.54E+12 7.82E-03 -2.96E-02 1.5 7E-02 - 2.15E-02 2.13Ε-02 -9.38Ε-03 12 6.36E-01 6.15E-03 2.81E-04 2.97E-03 -3.47E-03 2.97Ε-03 -9.1 1Ε-04 Face No. B9 B10 B1 1 B12 B13 Β14 Β15 3 6.77E-08 1.12E-08 2.17E-10 1.22E-11 8.64E-11 2.15Ε-11 -7.16Ε-15 4 1.26E-06 2.05E-07 1.64E-07 4.03E- 08 -3.04E-09 -7.47Ε-10 1.51Ε-10 11 -5.20E-06 -1.64E-06 -3.16E-07 2.08E-08 4.66E-08 1.97Ε-08 -1.71Ε-09 12 4.46 E-06 1.91E-06 3.14E-07 -1.78E-07 -1·85Ε-07 -1.05Ε-07 -4.66Ε-08 Face B16 B17 BI8 B19 42

M354745 No. 3 - 3.43E-12 9.17E-14 2.85E-14 5.38E-15 4 - 6.15E-10 3.84E-11 1.70E-11 4.66E-12 11 -8.61E-09 -7.15E-10 - 9.04E-11 9.39E-11 1.22E-10 12 -3.43E-12 9.17E-14 2.85E-14 5.38E-15 2.27E-17 [Table 23] Example 6 FNo. 2.0 ω 79.2 L 22.71 IH 2.40 Bf 2.2 LD 10.56 f 1.3 ED 9.94 f. -10.7 fl2 -2.1 f2 -3.5 f45 8.3 f3 7.9 f6 3.9 [Table 24] Example 6

Pl-Xl 182.71 R3 -6.42 P2-X2 3.77 R4 2.80 P3-X3 4.56 R11 4.10 P4-X4 8.44 R12 -3.34 &lt;Example 7 &gt; Fig. 10 shows a lens configuration diagram of the imaging lens according to Example 7, 10 Table 25 shows lens data, Table 26 shows the coefficients of each aspherical surface, Table 27 shows various data, and Table 28 shows the effective diameter end and the radius of curvature at the center. 43 M354745 In Fig. 10, the symbols Ri and Di correspond to Ri and Di of Table 25. It should be noted that in Example 7, glass was used as the material of the sixth lens L6. [Table 25] Example 7

No. Ri Di Ndj vdj 1 22.93 1.00 1.7725 49.6 2 6.39 3.89 3* -9.09 1.25 1.5316 55.4 4 * 2.75 1.82 5 7.80 2.00 1.9229 18.9 6 902.39 3.44 7 (Aperture stop) 〇〇1.00 8 4.44 3.00 1.7130 53.9 9 -3.50 1.04 1.9229 18.9 10 38.35 0.10 11* 4.72 2.44 1.7130 53.9 12* -4.17 1.39 13 〇〇0.50 1.5168 64.2 14 〇〇0.50 15 (imaging surface) 〇〇[Table 26] Example 7 Area No. K Β3 Β4 Β5 Β6 3 - 6.74Ε+01 2.23Ε-02 -3.34Ε-03 -1.66Ε-03 5.90Ε-04 44

M354745 4 -2.93E+01 1.65E-01 -4.72E-02 1.66E-03 8.82E-04 11 -6.22E+00 9.81E-03 1.38E-03 3.87E-04 8.56E-05 12 -3.05E +01 -3.59E-02 1.40E-02 2.00E-03 4.73E-05 Face No. B7 B8 B9 B10 3 -6.78E-05 2.07E-06 6.23E-08 3.74E-09 4 1.16E-04 -6.57 E-05 2.12E-06 8.13E-07 11 1.07E-05 -1.37E-06 -1.28E-06 -3.97E-07 12 -2.33E-05 7.86E-07 3.97E-06 1.47E-06 [ Table 27] Example 7 FNo. 2.0 ω 78.9 L 23.20 IH 2.40 Bf 2.2 LD 11.62 f 1.2 ED 10.98 fi -11.8 fl2 -2.3 f2 -3.8 f45 9.8 f3 8.5 U 3.5 5 [Table 28] Example 7

Pl-Xl -63.01 R3 -9.09 P2-X2 4.11 R4 2.75 P3-X3 4.4 R11 4.72 P4-X4 8.11 R12 -4.17 45 M354745 &lt;Example 8 &gt; Figure 11 shows the lens configuration of the photographic lens according to Example 8. Fig. 29 shows lens data, Table 30 shows the coefficients of each aspherical surface, Table 3 15 shows various data, and Table 32 shows the effective diameter end and the radius of curvature at the center. In Fig. 11, the symbols Ri and Di correspond to Ri and Di of Table 29. [Table 29] Example 8 No. Ri Di Ndj vdj 1 20.61 1.00 1.7130 53.9 2 6.14 4.14 3* -7.28 1.25 1.5316 55.4 4 * 3.54 2.75 5 15.22 2.00 1.9229 18.9 6 -24.36 4.38 7 (Aperture stop) 〇〇1.00 8 4.90 3.00 1.7130 53.9 9 -3.50 1.03 1.7847 26.3 10 27.68 0.10 11* 4.30 2.40 1.5316 55.4 12* -4.89 1.47 13 〇〇0.50 1.5168 64.2 14 〇〇0.50 15 (Imaging surface) 〇〇10 [Table 30] 46

M354745 Example 8 Face No. K B3 B4 B5 B6 3 -1.26E+02 2.14E-02 -3.35E-03 -1.66E-03 5.91E-04 4 -4.02E+01 1.63E-01 -4.68E-02 1.72E-03 8.87E-04 11 -3.28E+00 4.71E-03 1.04E-03 2.37E-04 4.14E-05 12 -3.83E+01 -3.23E-02 1.27E-02 1.55E-03 - 7.63E-05 Face No. B7 B8 B9 B10 3 -6.77E-05 2.07E-06 5.90E-08 2.70E-09 4 1.16E-04 -6.60E-05 2.01E-06 7.58E-07 11 1.03E- 06 -3.69E-06 -2.51E-06 -1.36E-06 12 -5.74E-05 -9.86E-06 3.49E-08 -1.71E-07 [Table 31] Example 8 FNo. 2.0 ω 79.2 L 25.35 IH 2.40 Bf 2.3 LD 11.50 f 1.3 ED 11.36 f, -12.6 fl2 -2.5 f2 -4.3 F45 9.0 f3 10.4 f6 4.7 [Table 32] Example 8 47 M354745 P1-X1 -49.35 R3 -7.28 P2-X2 4.53 R4 3.54 P3 -X3 5.25 R11 4.30 P4-X4 25.39 R12 -4.89 &lt;Example 9&gt; Fig. 12 is a view showing a lens configuration of an image pickup lens according to Example 9, Table 33 shows lens data, and Table 34 shows respective coefficients of each aspherical surface. Table 35 5 shows various data, and Table 36 shows the effective diameter end and the radius of curvature at the center. In Fig. 12, symbols Ri and Di correspond to Ri and Di of Table 33. [Table 33] Example 9 No. Ri Di Ndj vdj 1 15.19 1.50 1.8348 42.7 2 4.24 3.26 3* -14.29 1.25 1.5316 55.4 4 * 2.41 2.01 5 6.04 2.00 1.9229 18.9 6 44.66 2.88 7 (Aperture stop) 〇〇0.00 8 5.11 3.00 1.8348 42.7 9 -3.50 1.04 1.9229 18.9 10 18.33 0.10 11* 3.69 2.41 1.5316 55.4 12* -3.78 1.43 13 〇〇0.50 1.5168 64.2 48 M354745 14 〇〇0.50 15 (imaging surface) 〇〇[Table 34] Example 9 Face No. K B3 B4 B5 B6 3 -2.40E+02 2.41E-02 -3.22E-03 -1.66E-03 5.89E-04 4 -1.76E+01 1.76E-01 -4.71E-02 1.53E-03 8.26E-04 11 -4.19E+00 8.20E-03 1.94E-03 3.97E-04 3.19E-05 12 -1.57E+01 -3.55E-02 1.42E-02 2.04E-03 2.23E-05 No. B7 B8 B9 B10 3 -6.81E-05 2.00E-06 4.81E-08 -1.84E-10 4 1.01E-04 -6.85E-05 1.78E-06 8.64E-07 11 -1.66E-05 -1.15 E-05 -4.85E-06 -1.90E-06 12 -5.09E-05 -1.83E-05 -7.92E-06 -5.22E-06

[Table 35] Example 9 FNo. 2.0 ω 78.8 L 21.70 IH 2.40 Bf 2.3 LD 8.36 f 1.3 ED 8.30 fi -7.5 fl2 -1.9 f2 -3.8 f45 8.9 f3 7.4 f6 4.0 49

M354745 [Table 36] Example 9 P1-X1 42.45 R3 - 14.29 P2-X2 3.52 R4 2.41 P3-X3 4.47 R11 3.69 P4-X4 - 32.83 R12 - 3.78 Table 37 shows the conditional expressions of the photographic lenses of Examples 1 to 9. (1) The value corresponding to (16). As is known from Table 37, all of Examples 1 to 9 satisfy the conditional expressions (1) to (16). [Table 37] Conditional Example (1) (2) (3) (4) (5) (6) (7) (8) 7 ED/RL/f Bf/f fi2/f f3/f f56/f D7/d6 1 18.9 1.73 15.07 1.69 -1.42 5.40 6.56 -2.47 2 18.9 1.73 14.65 1.56 -1.36 4.41 8.12 -2.50 3 23.8 1.73 16.47 1.68 -1.49 5.24 8.21 -2.69 4 23.8 1.72 19.70 1.88 -1.62 6.01 11.83 -2.71 5 23.8 1.75 20.46 1.86 -1.60 5.79 13.28 -2.82 6 18.9 1.69 18.05 1.74 -1.63 6.27 6.63 -2.78 7 18.9 1.72 18.73 1.79 -1.83 6.87 7.92 -3.10 8 18.9 1.85 19.19 1.74 -1.93 7.88 6.80 -3.26 9 18.9 1.96 16.39 1.71 -1.44 5.58 6.75 -2.86 Conditional Example (9) (10) (Π) (12) (13) (14) (15) (16) Νι v η vp LD/R f2/f D[/f fi/f2 Rj/f 50 M354745 1 0.00 1.83 18.90 42.70 1.78 0.74 2.68 12.67 2 0.00 1.83 18.90 42.70 1.77 0.74 2.32 13.51 3 0.00 1.77 18.90 53.90 1.84 0.76 2.55 20.81 4 0.00 1.77 23.80 53.90 1.76 0.96 3.43 19.03 5 0.00 1.71 23.80 53.90 1.82 0.83 3.17 27.53 6 0.33 1.77 18.90 53.90 1.80 0.80 3.07 17.26 7 0.29 1.77 18.90 53.90 1.82 0.81 3.07 18.52 8 0.23 1.71 26.30 53.90 1.87 0.76 2.93 15.60 9 0.00 1.83 18.90 42.70 1.97 1.13 1.98 11.48 Fig. 13 to Fig. 21 show (A) spherical aberration, (B) astigmatic aberration, and (C) distortion aberration of the imaging lens according to the first to ninth embodiments, respectively. Aberration diagram of (a) aberration and (D) chromatic aberration of magnification. Each aberration diagram shows that the d line is set to 5 as the reference wavelength aberration, but the spherical aberration diagram and the magnification chromatic aberration diagram also show the F line (wavelength 486.1 nm) and the C line (wavelength 656 3 nm). Aberration. The distortion aberration map uses the focal length f of the entire system and the half angle of view θ (variable processing, ω) to set the ideal image height to fxtane, indicating the amount of deviation from them. FN〇j of the spherical aberration diagram, and 10 ω of the other aberration diagrams represent the half angle of view. As is apparent from Figs. 13 to 21, the above-described embodiments 丨 to 9 satisfactorily correct various aberrations. The photographic lenses of Examples 1 to 9 were appropriately provided with two aspherical lenses, achieving low cost while achieving good optical performance. The more the number of non-balls, the higher the aberration correction ability, but the number of aspherical lenses becomes the same: when the materials are all set to plastic, 'they will be weaker than the temperature change: 'badness such as grain' will be All materials f are set to be inferior in terms of rising glass cost. B produces 51 M354745 F value ^ = photographic lens with ΐ to 9 has good optical performance, with a bright optical system of two 2.0 and wide angle 'available to the picture 5 15 'like' so it can be used to shoot cars Front camera, side, rear # image car camera or surveillance camera. In the state in which the image lens and the image pickup apparatus of the present embodiment are mounted on the automobile (10). In Fig. 22, the automobile (10) has a side exterior camera (8) that takes a dead angle range on the side of the side of the deputy seat, and a rear exterior camera ι〇2 that photographs the dead angle range on the rear side of the car (10), and is mounted on the rearview mirror. The back of the 'camera camera (8) shot with the same field of view as the driver. The exterior camera 101 and the exterior camera 1〇2 and the in-vehicle camera (8) are imaging devices, and include an imaging lens 1 according to an embodiment of the present invention and a imaging element 5 that converts an optical image formed by the imaging lens 1 into an electrical signal. As described above, the photographic lens according to the embodiment of the present invention has a good optical performance, so that the side surface and the rear side exterior cameras 101 and 102 and the interior of the vehicle can be configured in a small and lightweight manner. The camera 103' can image a good image on the photographic surface of its photographic element 5. The present invention has been described above by way of embodiments and examples, but the present invention is not limited to the above-described embodiments and examples, and various modifications are possible. For example, the value of the radius of curvature 'plane spacing and refractive index of each lens component' is not limited to the values shown in the above numerical examples, and other values may be used. Further, in the embodiment of the photographing apparatus, an example in which the present invention is applied to the camera for a vehicle is illustrated. However, the present invention is not limited to this use, and may be applied to, for example, a camera for a portable terminal or a surveillance camera. 52 M354745 [Brief Description of the Drawings] Fig. 1 is an optical path diagram of an imaging lens according to an embodiment of the present invention. Fig. 2 is a view for explaining an effective diameter end and the like. Fig. 3 is a view for explaining a surface shape of a second lens. 5 is a cross-sectional view showing the lens configuration of the photographic lens of the first embodiment. Fig. 5 is a cross-sectional view showing the lens configuration of the photographic lens of the second embodiment. Fig. 6 is a cross-sectional view showing the lens configuration of the photographic lens of the third embodiment. Fig. 7 is a cross-sectional view showing the lens configuration of the photographic lens of the fourth embodiment. Figure 8 is a cross-sectional view showing the lens configuration of the photographic lens of the fifth embodiment. Fig. 9 is a cross-sectional view showing the lens configuration of the photographic lens of the sixth embodiment. Figure 10 is a cross-sectional view showing the lens configuration of the photographic lens of the seventh embodiment. Figure 11 is a cross-sectional view showing the lens configuration of the photographic lens of the eighth embodiment. Figure 12 is a cross-sectional view showing the lens configuration of the photographic lens of the ninth embodiment. Fig. 13 is a diagram showing aberrations of the imaging lens according to the first embodiment of the present invention. 15 is a diagram showing aberrations of the imaging lens according to the second embodiment of the present invention. Fig. 15 is a diagram showing aberrations of the imaging lens according to Example 3 of the present invention. Fig. 16 is a diagram showing aberrations of the imaging lens according to Example 4 of the present invention. Fig. 17 is a diagram showing aberrations of the photographic lens according to the fifth embodiment of the present invention. Fig. 18 is a diagram showing aberrations of the photographic lens according to the sixth embodiment of the present invention. FIG. 19 is a diagram showing aberrations of the imaging lens according to Example 7 of the present invention. Fig. 20 is a diagram showing aberrations of the imaging lens according to Example 8 of the present invention. Fig. 2 is a diagram showing aberrations of the imaging lens according to Example 9 of the present invention. Fig. 22 is a view for explaining the arrangement of an in-vehicle photographing apparatus according to an embodiment of the present invention. 53 M354745 [Description of main components] 1 photographic lens 1 〇 1 side exterior camera 103 interior camera 12 second light-shielding member 2 «full-view 4 upper-side off-axis ray effective diameter L2 second lens L4 fourth lens L6 sixth lens LD Optical surface diameter ΡΡ Optical component R2 Second surface curvature radius R4 Fourth surface curvature radius R6 Sixth surface curvature radius R8 Eighth surface curvature radius R10 Tenth surface curvature radius R12 Tim 12 Radius of curvature of the face R14 Radius of curvature of the fourteenth face Ζ Light axis 1 〇〇 Car 102 rear side exterior camera 11 First light blocking member 2 Axis light 3 Lower side off-axis light 5 Photographing element L1 First lens L3 Three lens L5 fifth lens LC cemented lens Pim imaging position R1 radius of curvature of the first face R3 radius of curvature of the third face R5 radius of curvature of the fifth face R7 radius of curvature of the seventh face R9 ninth face Curvature radius R11 Radius of curvature of the eleventh face R13 Radius of curvature of the thirteenth face St The aperture stop CQ2 has a radius of the absolute value of the radius of curvature at the intersection of the image side of the second lens and the optical axis Round, its circle Located on the optical axis, and the circle passes through the intersection of the image side of the first lens and the intersection of the optical axis 54 M354745 CX2 with the absolute radius of curvature of the effective radius end of the face of the imaging side of the first lens. a circle whose center is located on the optical axis, and the circle passes through the effective path end point D1 of the face of the imaging side of the second lens and the face spacing D2 on the optical axis of the second face and the second face and The interplanar spacing D3 on the optical axis of the third face and the interplanar spacing D4 on the optical axis of the third face and the fourth face are the fifth face of the fourth face and the optical axis on the fifth face. The surface spacing on the optical axis of the sixth face is called D6. The face spacing on the optical axis of the sixth face and the seventh face is D7. The face spacing on the optical axis of the seventh face and the eighth face &quot; D8 The surface spacing D9 on the optical axis of the eighth and ninth faces and the surface spacing D10 on the optical axis of the ninth and tenth faces of the tenth face and the face on the optical axis of the eleventh face The interval D12 of the optical axis on the tenth-th surface and the twelfth surface of the interval D11 is the eleventh surface and the eleventh surface and the tenth on the optical axis of the thirteenth surface. Surface spacing on the optical axis of the face • D14 The face spacing on the optical axis of the fourteenth face and the fifteenth face H2 The normal of the lens face at the effective path end of the face of the second lens P2 second lens of the imaging side of the effective side of the plane of the lens surface of the normal and the intersection of the optical axis Q2 of the second lens of the imaging side of the surface and the optical axis of the point X2 of the lens of the imaging side of the lens Effective path endpoint 55

Claims (1)

M354745 VI. Scope of Application: 1. A photographic lens comprising, in order from the object side, a first lens of the shape of a moon, having a negative refracting power and having a concave surface toward the imaging side, and a second lens near the optical axis At the same time as the biconcave shape, 5 at least one side has an aspherical shape; the third lens has a positive refracting power; the light barrier; the cemented lens, the fourth lens having one side having a positive refracting power and the other having a negative refracting power And a fifth lens, and the whole has a positive refracting power; and a sixth lens having a positive refracting power and at least one side having an aspherical shape; 10 the second lens is made of glass, and the third lens is When the Abbe number of the d line is set to γ 3 , the following conditional expression (1) is satisfied: ^ 3^30 (1). 2. A photographic lens comprising, in order from the object side, a first lens of a meniscus shape having a negative diopter and facing the concave side toward the imaging side; and a second lens having a biconcave shape near the optical axis At least - the surface is aspherical; the third lens has a positive refracting power; the light barrier; the cemented lens is coupled to the fourth lens and the fifth lens having either a positive refracting power and a negative refracting power And having a positive refractive power as a whole; the sixth lens having a refractive power of 20, and at least one surface having an aspherical shape; and an effective diameter of the surface of the imaging side of the first lens is ed, and the first When the radius of curvature of the surface on the imaging side of the lens is R2, the following conditional expression (2) is satisfied: 1.65 &lt; ED / R2 &lt; 2.0 . . . ( 2) 0 56 M354745 3. A photographic lens from the object side In this order, the lens includes a meniscus shape having a negative refracting power and a concave surface facing the image forming side, and a second lens ′ having a biconcave shape near the optical axis and an aspherical shape to the imaging side. And according to negative The diopter is formed in such a manner that the face of the image side is weaker than the center; the third lens has a positive diopter; the light block; the cemented lens, which has positive diopter through either side of the joint and has a negative The fourth lens and the fifth lens of the diopter, and the overall eight has a positive refracting power, and the sixth lens has a positive refracting power, and at least one side has an aspherical shape, and the surface of the imaging side is near the optical axis. The ten-convex shape and the positive refracting power are configured such that the effective diameter end is weaker than the center, or the surface on the imaging side is convex in the vicinity of the optical axis and has a negative refracting power at the effective diameter end. 4. The photographic lens of claim 2, wherein the third lens is made of glass. The photographic lens according to any one of claims 1 to 3, wherein the focal length of the entire system is set to f, and the object side surface of the first lens is applied to the optical axis of the imaging surface. The upper distance is set to L, and the distance from the image side of the sixth lens to the optical axis of the image plane is set to satisfy the following 20 conditional expressions (3) and (4): 14.0&lt;L/f&lt; 21.0 ... (3) 1.3&lt;Bf/f&lt; 2.0 ... (4) . 6. The photographic lens according to the scope of the patent application, wherein 57 M354745 - the image side of the second lens is formed in such a manner that the negative diopter is weaker than the center at the light end. The photographic lens according to any one of claims 1 to 3, wherein the object-side surface of the sixth lens has a convex shape in the vicinity of the optical axis and a positive diopter at the effective diameter end. The way it is weaker than the center. 8. The photographic lens according to claim 2, wherein the imaging side surface of the sixth lens has a convex shape in the vicinity of the optical axis, and the positive diopter is weaker than the center at the effective diameter end. Way composition. The photographic lens according to any one of claims 1 to 3, wherein the lens having the positive refracting power constituting the cemented lens has two convex shapes. The photographic lens according to any one of the preceding claims, wherein the lens having a negative refracting power constituting the cemented lens is a double concave shape. y 11. The photographic lens according to any one of the preceding claims, wherein the focal length of the entire system is set to f, and the combined focal length of the first lens and the second lens is set to 匕At 2 o'clock, the following conditional expression (5) is satisfied: -2.0 &lt;f12/f&lt;-1.0 (5). The photographic lens according to any one of claims 1 to 3, wherein the photographic lens according to any one of claims 1 to 3, wherein The Abbe number of the d-line of the lens having a positive refractive power of the cemented lens is Υ P, and the Abbe number of the d-line of the lens having the negative refractive power of 5 degrees constituting the cemented lens is γη. The following conditional expressions (11), (12): 30&gt; Υ η (11) Υ ρ>35 (12) are satisfied. The photographic 10 lens according to any one of the preceding claims, wherein the optical surface of the image forming side of the first lens is LD, and the first lens is When the radius of curvature of the surface on the imaging side is R2, the following conditional expression (13) is satisfied: 1-7 &lt; LD/R2 &lt; 2.0 (13). The photographic lens according to any one of claims 1 to 3, wherein the second lens is made of plastic. The photographic lens according to any one of claims 1 to 3, wherein the second lens is made of plastic. A photographic lens comprising: a photographic lens according to any one of claims 1 to 3, and M354745 a photographic element that converts an optical image formed by the photographic lens into an electrical signal. 61