TWM357610U - Photography lens and photography device - Google Patents

Description

M357610 V. New description: [New technical field] This work is about a kind of photographic lens and photographic device, especially photographic components such as CCD (Charge Coupled Device) 33⁄4 CM〇S (C〇mpiementary 5 Metal Oxide Semiconductor) An imaging lens used in a vehicle-mounted camera, a camera for a mobile terminal, a surveillance camera, and the like, and an imaging device including the imaging lens. [Prior Art] 10 In recent years, extremely small size and high pixelization 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 on-vehicle cameras or surveillance cameras, for example, a bright optical system with an IS F value of 2.0 can be used in outdoor cars in the cold regions and in summer in the tropics, while having high weather resistance. A low-cost wide-angle lens used in a wide-area temperature range. Patent Examples 1 to 3 describe that a negative first lens, a second lens, a third lens, a fourth lens, and a fifth lens are disposed in this order from the object side. The lenticular lens of the second lens and the sixth lens is used to obtain a wide-angle photographic lens. [Patent 1] US Patent No. 7023628 [Patent 2] Patent Publication No. 61_12381 公报 [Publication 3] Patent Gazette No. 25993 j No. 2 M357610 Lens used in the above fields, especially the main surveillance vehicle The wide-angle vehicle lens on the front side, the side, and the rear is prone to large sag aberration (distortion aberration). When the distortion aberration is large, the image of the peripheral portion 'on the imaging element is compressed and imaged. Therefore, even if the distortion V 5 aberration is corrected by the image processing, the resolution of the peripheral portion is lower than that of the center. problem. In this case, in addition to the above expectations, in order to obtain a good image up to the corners of the image, it is required to correct the distortion aberration well. However, since the photographic lens described in Patent Document 1 is entirely composed of a spherical lens, it is difficult to satisfactorily correct the distortion aberration. According to the patent 2, the 〇 photographic lens has a large F value and is a dark optical system with an F value of 2.8 to 4. Therefore, it is not suitable for an on-vehicle camera or a surveillance camera, and is not wide-angled or miniaturized. full. Since the photographic lens described in the third aspect of the invention uses an aspherical lens in the cemented lens, it is necessary to form an aspherical surface by the glass lens, thereby increasing the cost. 15 [New content] This creation is made in view of the above circumstances, and its object is to provide a photographic lens that has a small F value and a wide angle and can maintain good optical performance, and can obtain an image with a good angle to the corners of the image. And a camera 2 device having 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, a first lens having a meniscus shape having a negative refracting power and having a concave surface toward the image forming side; and a second lens having a surface on the imaging side thereof are in the light While the axis is concave, at least one side has an aspherical shape; the third lens has a positive refracting power; the light intercept; the fourth lens has a positive refracting power, and at least the γ surface of the M357610 has an aspherical shape; The lens 'having either a positive refracting power and a fifth lens and a sixth lens ′ having a negative refracting power and having a positive refracting power as a whole. The third lens is made of glass, and the third lens is paired with d When the Abbe number of the line is set to Υ3, the following conditional formula (1) is satisfied. 乂3<30 (1) The first imaging lens of the present invention is appropriately selected by the configuration of each lens, and A small number of aspherical lenses are arranged in the same place, and a small F value, a wide angle, and a good aberration including a distortion of 10 aberrations are corrected in the same temple for cost reduction. When the Abbe number of the third lens including the cemented lens is satisfied, the conditional expression (1) is satisfied, and the chromatic aberration of the residual color 彳m residual magnification is satisfactorily corrected, and the resolution is lowered. Therefore, in order to obtain - to the image side A good image for all angles is effective for complementing positive chromatic aberration of 15 degrees. The second photographic lens of the present invention is characterized in that it is wound from the object side in order: a meniscus-shaped first lens having a negative The diopter has a concave surface toward the imaging side; the second lens has a concave side in the vicinity of the optical axis and at least one side thereof has an aspherical shape; and a third lens having a positive refractive power and a light barrier; a fourth lens having at least one aspherical shape while having a positive refracting power; and a cemented lens formed by joining a fifth lens and a sixth lens having a positive refracting power and a negative refracting power, and When the effective diameter of the M357610 surface on the imaging side of the first lens is ED and the radius of curvature of the surface on the imaging side of the first lens is & (2) 1.65 <ED/R2<2.0 (2) The second photographic lens of the present invention, by appropriately selecting the configuration of each lens, 50%, satisfies the conditional expression (7), and appropriately configures a small number of The aspherical lens seeks to reduce the F-value, wide-angle, and correct aberrations including distortion aberrations while achieving cost reduction. The third photographic lens of the present invention is characterized in that it is sequentially from the object side. A lens having a shape of a crescent moon having a negative refracting power and having a concave surface W facing the image forming side, and a second lens having at least an image side having an aspherical shape, the image side having a concave shape in the vicinity of the optical axis At the same time, the negative diopter is weaker than the center at the effective diameter end; the third lens has a positive diopter; the light rest; the fourth lens has a positive refracting power, and at least the image side has an aspherical shape, While the image side has a convex shape near the optical axis, the U positive diopter is weaker than the center at the effective diameter end; the cemented lens has a positive refracting power through either side of the joint, and the other has a negative refracting power and a fifth lens and Lens is made and having a positive refractive power overall. In the third photographic lens of the present invention, a small number of aspherical lenses are appropriately disposed by appropriately selecting the configuration of each lens, and the aspherical shape is further appropriately set, thereby achieving a low cost and a small F. Values, wide angles, and good corrections for aberrations that include time-varying aberrations. Here, in the photographic lens of the present invention, the focal length of the entire system is set to f, the distance from the object-side surface of the first lens to the optical axis of the imaging surface is set to L, and the sixth lens is imaged. When the distance from the side surface to the image plane 6 M357610 is set to Bf, it is preferable to satisfy either or both of the following conditional expressions (3) and (4). 15.0<L/f< 21.0 (3) 1.2<Bf/f<2.2 (4) In addition, in the photographic lens of the present invention, the material of the third lens is preferably glass. Further, in the photographic lens of the present invention, it is preferable that the object-side surface of the second lens has a convex shape in the vicinity of the optical axis, and the positive refracting power is configured to be weaker than the center at the effective diameter end, or according to the light. The vicinity of the shaft has a convex shape and has a negative refractive power at the effective diameter end. Further, in the photographic lens of the present invention, it is preferable that the object-side surface of the second lens has a concave shape in the vicinity of the optical axis and a secondary or secondary inflection point on the way toward the effective diameter end. The way the shape is composed. Further, in the photographic lens of the present invention, it is preferable that the surface of the second transparent image forming side is formed such that the effective diopter is weaker than the center at the effective diameter end. Further, in the photographic lens of the present invention, it is preferable that the object side surface of the fourth mirror is a sinusoidal shape and a negative diopter in the vicinity of the optical axis. Stronger than the center. (4) In the photographic lens of the present invention, it is preferable that the fourth transparent surface has a convex shape in the vicinity of the optical axis, and the positive refractive power is configured to be weaker than the center at the effective diameter end. In the photographic lens of the present creation, the focal length of the whole system is f, and the first reading, the composite focal length of the 0# brother and the second lens is f!2, preferably The conditional expression (5) below is satisfied. 2.5 <fi2/f<- 1 5 5 In addition, in the photographic lens of the present invention, when the focal length of the entire system is set to 2/the focal length of the third lens is set to f3, it is preferable to satisfy the following conditional expression. (6). 5.0<f3/f<14.0 (6) 10 15 In the photographic lens of the present invention, the focal length of the entire system is set. The main focal length of the fifth lens and the sixth lens is set to ^ Preferably, the following conditional expression (7) is satisfied. 4.8<f56/f<19.0 (?) Further, in the photographic lens of the present invention, the distance from the image side of the third lens to the optical axis of the light barrier is set to A, and the above The distance from the diaphragm to the optical axis of the fourth lens is (4), and the conditional expression (8) is preferred. 〇.〇<D7/D6<〇.7 (8) In addition, in the photographic lens of the present invention, when the refractive index of the d-line of the first lens is set to ^, it is preferable to satisfy The conditional expression (9) ^ 1.70<N]< 1.90 (9) Further, in the photographic lens of the present invention, the Abbe number of the pair (four) of the lens having the positive refracting power of the above-described cemented lens is formed. When it is assumed that the Abbe number δ history of the d-line of the lens having the negative refractive power of the cemented lens is γ n , it is preferable to satisfy the following conditional formula (1 〇), (1, 20 M357610 ίο). Π) 3〇> yny Ρ> 35 like the side two ί photographic lens, the above-mentioned first - through _ 5 15

When the optical surface diameter is LD and the radius of curvature of the surface of the first (4) plane of the first lens is 仏, it is preferable to satisfy the following conditional expression (12) < 1.7 < LD / R2 < 2. 〇.. (12) In addition, in the photographic lens of the present invention, the material of the second lens is preferably plastic. Further, in the photographic lens of the present invention, the material of the fourth lens is preferably plastic. It should be noted that 'in this creation, the effective diameter is regarded as the diameter. 乂In addition, the 'A learning surface diameter' is a straight region that acts as an optical lens surface. For example, in a lens produced by transmission grinding, The diameter of the polished surface becomes the optical surface diameter. It should be noted that in the present creation, "the effective diameter end refers to the point where the outermost light in the total ray passing through each lens surface intersects with each lens surface. It should be noted that "positive The diopter is weaker than the center at the effective diameter end. The 疋 finger may have a positive refractive power of 20 degrees at the effective diameter end or a negative diopter at the effective diameter end. Similarly, "negative The diopter is weaker than the center at the effective end. It means that the effective diopter can have a negative diopter with a smaller absolute value than the center, or it can have a positive diopter at the effective diameter. 9 M357610 One thing to note is that The fourth lens in the present creation, "having a positive diopter $ means not only determined by the radius of curvature of the paraxial axis, but by a light beam parallel to the optical axis of the effective light is incident on the fourth lens, The light beam emitted by the fourth lens becomes a concentrated beam. 5 In the present creation, the arrangement order of the lens having a positive refractive power and the lens having a negative refractive power, which constitute the cemented lens, may be arranged on the object side. It should be noted that, in the calculation of the above-mentioned u Bf Japanese temple, the air-converted distance is used for the back focal length. Further, among the values of the above conditional expressions (丨) to (丨丨), the d-line (wavelength: 587.6 nm) is used as the reference wavelength, and the d-line is used as the reference wavelength unless otherwise specified in the specification. The photographing apparatus of the present invention is characterized in that it includes an imaging lens of the above-described creation and an imaging element that converts an optical image formed by the imaging lens to an electric signal of 15 . According to the first 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 material of the first lens is selected to satisfy the conditional expression (1), and Therefore, it is possible to achieve a small F value and f-angle while reducing the cost, and to maintain good optical performance, especially to correct the magnification; aberration and distortion aberration, Get an image that looks good to the edges of the image. According to the second photographic lens of the present invention, a small number of aspherical lenses are appropriately disposed in a lens system of at least five groups of six sheets, so that the conditional expression (2) is satisfied, and appropriately Since the configuration of each lens is set, the M357610 can maintain a good optical performance while achieving a small F value and a wide angle while reducing the cost. In particular, the distortion aberration can be corrected well, and the image corners can be obtained. Good image. 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 sheets, the aspherical shape is appropriately set, and the configuration of each lens is appropriately set. Therefore, while achieving a low cost and a small F value and wide angle, a good optical performance can be maintained, and in particular, the distortion aberration can be satisfactorily corrected, and an image with good image corners can be obtained. [Embodiment] The garden is broken to illustrate the creation of this book ~ only Qing Yu. Guan Guang explains the implementation of the photographic lens of this creation, and then explains how the photographic device is applied. 15 20 and FIG. 1 show that the collocation lens 1 of the photographic lens 1 according to the present invention also shows the on-axis ray 2 and the lower-side off-axis ray 3. It is necessary to say that (4) is the composition shown in _丨. Further, Fig. 5 to Fig. 12 show a cross-sectional view of a lens of another configuration example of the shadow lens, and the rust gentlemen of the second to the ninth embodiments are formed by a lens which is fixed to the lower phase. In the basic configuration of the first to the ninth embodiments, the photographic lens 1 according to the configuration shown in Fig. 1 is mainly illustrated. The photographic lens j according to the embodiment of the present invention is provided with the image lens 1 from the object side. The 帛 lens of the nn 弁 M 彳 彳 具有 具有 具有 具有 具有 具有 具有 ® ® ® ® ® ® ® ® ® ® ® ® ® ® ® ® ® ® ® ® ® ® ® ® ® ® ® ® ® ® ® ® ® ® ® ® ® ® ® a spherical shape; a second lens L3 having a positive refracting power; the aperture light intercepting a fourth lens eight having a positive refracting power while at least one side is an aspherical shape; the interface lens LC having a joint yoke having a positive refracting power The other side has a negative diopter fifth through (four) and a sixth lens L6, and has a positive diopter. Need to explain is 'map! The aperture stop & does not represent the shape or 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 photographic element 5 disposed on the image plane of the Pim including the imaging position of the photographic lens is also not considered. The photographic element 5 converts an optical image formed by a photographic lens into an electrical signal, for example, a CCD image sensor or the like. In addition, when applied to a photographing apparatus, it is preferable to arrange a glass cover, a low-pass chopper, or an infrared cut-off dermatizer ffi 1 in the lens system and the photographic element 5 in accordance with the phase of the phase on which the lens is mounted. An example of the arrangement of these plate-shaped optical members PP is provided. For example, when the vehicle camera is used as a night vision aid for a night vision camera, it can also filter the ultraviolet light to blue light of the lens system and the photographic element.

Is 〇 It should be noted that such a device may be disposed between the lenses instead of arranging a low-pass chopper between the lens system and the photographic element 5, or various kinds of dampers that cut off a specific wavelength band. Alternatively, it is also possible to apply a coating 12 M357610 having the same function as various detuners on the lens surface of any lens having a photographic lens, and to provide a first lens L1 as a negative moon lens having a concave surface toward the imaging side, which can be first The convex surface on the object side of the lens L1 captures the light of the _, and at the same time as the wide-angled optical system, the Petzval and the Valley easily correct the curvature of curvature of the entire ridge area. '5', the surface on the imaging side of the second lens L2 has a concave shape in the vicinity of the optical axis, and the out-of-plane light incident at a large angle is guided to the subsequent positive lens while suppressing the amount of aberration. . By making the at least one surface of the second lens L2 aspherical, it is possible to satisfactorily correct various aberrations, and in particular, it is possible to satisfactorily correct distortion aberration. As shown! Dry, • H) (4) When the surface of the second lens U separating the on-axis ray 2 and the off-axis ray 3 is aspherical, it is advantageous for aberration correction and it is easier to correct the distortion aberration. It should be noted that the first lens L1 also appropriately separates the on-axis ray 2 and the off-axis ray 3, but the first lens L1 disposed closest to the object side as described below preferably uses glass as the material f, and is formed by the glass lens. On the spherical side, the cost 15 becomes higher. Further, since the first lens ^ is the lens having the largest diameter, if it is an aspherical glass lens, the cost is greatly increased. As is apparent from these cases, the second embodiment L2 of the plastic material is often selected to have an aspherical shape to facilitate lens production and aberration correction. The second lens L 2 preferably has at least an aspherical surface on the imaging side. The second mirror L2 transmits a negative refracting power in the vicinity of the optical axis, and the imaging side surface is not aspherical, and the aberration can be effectively corrected. When the surface on the imaging side of the second lens L2 is aspherical, it is preferable that the imaging side surface of the second lens L2 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 light incident on the periphery of the lens is bent and the light is concentrated, so that the distortion aberration can be satisfactorily corrected. It is to be noted that 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, in the example shown in FIG. 2, in the plane on the imaging side of the first lens L1, the point at which the outermost peripheral light of the off-axis light intersects the lens surface becomes the effective diameter end, and the direct control of the circle formed by the intersection is obtained. As an effective technical ED diagram. 2 is a partially enlarged cross-sectional view of the photographic lens of the sixth embodiment to be described later. Referring to FIG. 3, a description will be given of a configuration in which the surface on the imaging side of the second lens has a concave shape near the axis of the light, the negative diopter is weaker than the center at the effective diameter end, and has a negative refracting power at the effective control end (referred to as a configuration). The first component). In the cross-sectional view of the photographing lens 1 shown in FIG. 3, the effective diameter end of the image side of the second lens 1 is set to point X2, and the normal line H2 and the optical axis Z of the lens surface at the point are When the intersection point is set to the point p2, the length of the line '^ and P2_X2 connecting the point χ2 and the point p2 5 is set to the radius of curvature at the point χ2, and the image side of the second lens L2 and the optical axis z are The intersection of the surface of the image forming side of the first lens L2 is set to a point Q. The first configuration described above is that the point P2 is located on the imaging side more than the point Q2, and the absolute value of the radius of curvature at the point X2 is larger than the absolute value of the radius of curvature at the point Q2. Fig. 3 is a diagram for facilitating understanding that 'the absolute value of the radius of curvature on the point (2 (the length of the line segment P2-X2) is a radius, and by the point χ2, a circle with the dotted line on the optical axis is drawn with a dotted line CX2. Further, the absolute value of the radius of curvature at the point q2 is set to a radius, and a circle CQ2 having a point on the optical axis centered by a two-dot chain line 14 M357610 is drawn by a point XQ2. As shown in FIG. 3, the circle CX2 becomes a circle larger than the circle CQ2. Further, it is preferable that the surface on the imaging side of the second lens L2 has a concave shape in the vicinity of the optical axis, and a configuration in which a negative refracting power is stronger than the center between the center and the effective diameter end is included (referred to as a second configuration). This is the same as the first configuration explained with reference to Fig. 3, and can be considered as follows. 15 20 In the lens cross-sectional view (marks X22, P22, and Q22 are not shown), 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 Ζ is set. When it is ρ22, the length of the line segment Ρ22-Χ22 connecting the point χ22 and the point Ρ22 is set to the radius of curvature of the point χ22. 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 between the center and the effective L螭 is larger than the absolute value of the radius of curvature of the center of the face on the imaging side of the second lens. Still small, χ22. The surface on the object side of the second lens L2 is preferably an aspherical shape, and in this case, various aberrations can be corrected in a good manner. When the surface on the object side of the second lens L2 is aspherical, it is preferable that the positive 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 (referred to as a third configuration). Alternatively, it is preferable that the object-side surface of the second lens L2 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 (referred to as a fourth configuration). According to the third or fourth configuration, the image plane f curvature and the _ aberration can be satisfactorily corrected. The third configuration is the same as the first configuration described with reference to Fig. 3, and can be considered as follows. In the lens cross-sectional view (marks X1, P1, and Q1 are not shown), the second transparent 15 M357610 point X1, the point at which the point will be connected, and the effective path end of the object side surface of the point L1 mirror L2. When the intersection of the line and the optical axis Z is set to the point pl, the length of the line segment P1-X1 is set to the radius of curvature of the point χι. Further, the intersection of the object-side surface of the second lens L2 and the optical axis z, that is, the center of the object-side surface of the second lens L2 is referred to as a point qi. The third configuration means that the point P1 is located on the image side more than the point φ, and the absolute value of the radius of curvature (the length of the line segment P1-X1) at the point χ is larger than the absolute value of the radius of curvature at the point Qi. The fourth configuration is that the point ρ defined in the description of the third configuration is closer to the object side than the point on the object side of the lens L2 and the point of the intersection of the optical axis z and the absolute radius of curvature at the point χ The value (the length of the line segment ρι_χι) is larger than the absolute value of the radius of curvature at the point Q1. Further, the object side #面| of the second lens L2 is preferably convex in the vicinity of the optical axis, and has a point where the diopter becomes stronger than the center 15 from the center to the effective diameter end. Further, the object-side surface of the second lens L2 is convex in the vicinity of the optical axis, and preferably has an inflection point in which the diopter symbol changes from positive to negative on the way from the center to the effective diameter end. Or the object-side surface of the second lens L2 has a concave shape in the vicinity of the optical axis, and preferably has an inflection point in which the diopter symbol changes from negative to positive on the way from the center to the effective diameter end. Or the object-side surface of the second lens L2 has a convex shape in the vicinity of the optical axis, and preferably has two inflection points on the way from the center to the effective diameter end, and the diopter symbol changes from negative to positive, and the diopter is again The composition of the change from positive to negative. The M357610 can flatten the image plane by using a contoured image plane having the inflection point as described above, and is suitable as a lens for imaging the imaging element. The force of π υ ' is preferably two or three. According to this configuration, the refracting power of the third lens L3 can be enhanced, and the chromatic aberration of the magnification can be easily corrected. The four lens L4 transmits the at least one surface to an aspherical surface, so that the aberration can be satisfactorily compensated. The fourth lens L4 preferably has at least an aspherical surface on the imaging side. The object-side surface of the fourth lens L4 is preferably an aspherical shape, and the aberrations are satisfactorily corrected. When the surface S on the object side of the fourth lens 又 is aspherical, it is preferable that the surface on the object side of the fourth lens L4 has a concave shape in the vicinity, and the negative diopter is stronger than the center at the effective diameter end (referred to as a configuration). The fifth component). Or preferably, the object-side surface of the fourth lens L4 has a convex shape in the vicinity of the light 15 axis. The positive refractive power is weaker than the center at the effective diameter end (referred to as a sixth configuration). The fifth configuration is the same as the first configuration explained with reference to Fig. 3, 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 fourth lens L4 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 phantom and the point μ 2 设为 is set to the radius of curvature at the point χ3. Further, the intersection of the object-side surface of the fourth lens L4 and the optical axis 又, that is, the center of the object-side surface of the fourth lens L4 is referred to as a point Q3. The fifth configuration is a configuration in which the point P3 is located on the object side more than the point Q3, and the absolute value of the radius of curvature of the 17 M357610 (the length of the line segment P3-X3) at the point χ3 is smaller than the half value of the curvature at the point Q3. The sixth configuration means that the point p3 defined in the description of the fifth configuration is more on the image side 5 than on the object side surface of the fourth lens L4 and the intersection point q3 of the optical axis Z and the absolute radius of curvature at the point X3 ± The value (the length of the line segment ρ3_χ3) is larger than the absolute value of the radius of curvature at the point Q3. When the surface on the imaging side of the fourth lens L4 is aspherical, it is preferable that the imaging side surface of the fourth lens L4 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. Make the seventh composition). 1〇 The seventh configuration is the same as the first configuration described with reference to Fig. 3, and can be considered as follows. In the lens cross-sectional view (marks X4, P4, and Q4 are not shown), the effective diameter end of the imaging side surface of the fourth lens L4 is set to point χ4, and the intersection of the straight dotted line and the optical axis 设为 is set as a point. In time, 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 fifth lens L4 and the optical axis 又, that is, the center of the image-side surface of the fourth lens L4 is set as the point q4. The seventh configuration means that the point P4 is located further on the object side than the point Q4, and the absolute value of the radius of curvature at the point χ4 (the length of the line segment Ρ4-Χ4) is larger than the absolute value of the radius of curvature at the point q4. In the fourth lens L4, the surface on the object side or the surface on the image side has a concave shape in the vicinity of the optical axis, and the configuration in which the negative diopter is weaker than the center at the effective diameter end can satisfactorily correct the curvature of field and the spherical image. difference. 18 M357610 Further, in the fourth lens L4, the surface on the object side and the surface on the imaging side are convex in the vicinity of the optical axis, and the positive refractive power is weaker than the center at the effective diameter end, which can correct the curvature of field well. Spherical aberration. In the photographic lens 1, by providing the second lens L2 and the fourth lens [4] as aspherical lenses, the distortion can be satisfactorily corrected in addition to the coma aberration and the field curvature. The cemented lens LC illustrated in Fig. 1 is composed of a fifth lens L5 having a negative refracting power and a sixth lens L6 having a positive refracting power. According to such a configuration, axial chromatic aberration and lateral chromatic aberration can be satisfactorily corrected. As shown in Fig. 10, when the cemented lens LC is composed of two convex lenses and two concave lenses, the refracting power of each lens can be enhanced to facilitate the correction of chromatic aberration. Here, in the photographic lens according to the embodiment of the present invention, when the Abbe number of the third lens L3 to the d line is y3, it is preferable to satisfy the conditional expression (1) ° 15 Y 3 < 30 ... ( i) The third lens L3 is disposed in the vicinity of the light-dense aperture light intercepting, and at the same time, acts on a lens that converges the direction of the divergent light emitted from the first lens L1 and the first lens L2 having a negative refracting power. By selecting the glass material of the third lens L3 so as to satisfy the conditional expression (1), the positive chromatic aberration can be satisfactorily compensated. 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 ed and the radius of curvature of the surface on the imaging side of the first lens u is & It is preferable to satisfy the following conditional expression (2). 19 M357610 l_65<ED/R2<2.〇···(1) The reason why the surface of the image forming side of the first lens which becomes the hemisphere or the hemisphere exceeds the conditional expression (2). Super == is therefore difficult to process 'to become a cost distortion aberration. In the case of the lower limit of (), the photographic lens according to the embodiment which cannot be satisfactorily corrected, 茜/creation is preferably = 足下杨 (1)), in which case the cost increase can be suppressed and the distortion aberration can be corrected well. . 1.70<ED/R2<i.95 (2) In addition, in the photographic lens according to the embodiment of the present invention, the focal length of the entire lens is set to f, and the surface of the object side of the first lens U is imaged. When the distance of the surface gold axis ^ is L and the distance from the image side of the sixth lens L6 to the optical axis of the surface is Bf, it is preferable to satisfy the following conditional expressions (3) and (4). Any one or two. 15 20 15.0<L/f<2l.〇 (3) 1.2<Bf/f<2.2 (4) When the upper limit of the conditional expression (3) is exceeded, the overall length becomes long so that the system is enlarged. When the lower limit of the conditional expression (3) is exceeded, the focal length of the whole (four) system is too long and the wide angle is not filled with the knife. In order to achieve wide angle, it is necessary to ensure that the angle of distortion according to the distortion aberration is changed around the image or the full length is too Short, the thickness of each lens is thinner and difficult to process. It is preferable that the surface on the object side of the first lens L1 and the distance on the optical axis of the image surface are 26 Å or less, and more preferably hereinafter. 20 M357610 In the case of "widening angle", when the full angle of view on the diagonal of the photographic element 5 is 2«, 2ω is preferably 14 以上 or more. Here, as shown in Fig. 2, 2:4 = the angle formed by the principal ray 3 of the lower side of the first lens U and the chief ray of the upper off-axis optical line 4. 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 τ limit of the conditional expression (4) is exceeded, the (four) distance becomes too short, and the photographic lens involved in the embodiment in which the glass cover or the various filter wires are inserted between the lens system and the photographic element is the entire 隹When m is the main combination of the first lens £1 and the second lens L2, and the distance 3 is f12, it is preferable to satisfy the following conditional expression (5). -2.5 <f12/f<~15 (5) When the upper limit of the conditional expression (1) is exceeded, wide angle can be easily achieved, and a good image is obtained on the 15th, 20th, and 7th. The next limit of the conditional expression (5) is exceeded, and the two negative lenses placed on the side of the (four) near object are bent. It is not possible to bend the light, and it is difficult to achieve wide-angle, or to enlarge the lens in order to achieve wide-angle. The photographic lens according to the embodiment of the system is the following conditional expression (6) In the case of f3, the upper limit of 'best 5.0' f3/f<14.0 ... ($) is U 3 is weak, and it is difficult to correct the chromatic aberration of magnification. The lower limit of conditional formula (4) is exceeded. When ^ 21 M357610 The diopter of the three-lens L3 becomes too strong, the sensitivity to eccentricity becomes high, and the productivity is lowered. In the photographic lens according to the embodiment of the present invention, when the focal length of the entire system is f and the combined focal length of the fifth lens L5 and the sixth lens is 匕6, it is preferable to satisfy the following conditional expression (7). ). 4.8 <f56/f<19.0 (7) When the upper limit of the conditional expression (7) is exceeded, the refracting power of the cemented lens ^ becomes too weak, and it is difficult to satisfactorily correct chromatic aberration. The lower limit of the conditional expression (7) is exceeded. The diopter of the positive lens in the lens LC becomes too strong, so the radius of curvature of the lens becomes small and it is difficult to process. Further, in the photographic lens according to the embodiment of the present invention, the distance from the surface on the imaging side of the third D mirror to the optical axis of the aperture stop S1 is set to the distance from the slave light stop St to the fourth lens L4. It is assumed that the following conditional expression (1) is satisfied. T 15 15 20 0.0 < D7 / D6 < 07 ... (8) exceeds the conditional (8) upper = diameter light stop St, so the first lens L3 close to the hole axis 2 1 ^ knife away It is difficult for the first lens U to the third lens L3 to exceed the conditional d side off-axis light beam 3 to correct the distortion aberration well.

St, so at the lower limit of (4), the fourth lens is swallowed by the aperture diaphragm. In addition, special processing is the main cause of cost increase. The photographic lens according to the embodiment of the lens L1 is in the first formula (9). When the refractive index is set to Νι, it is preferable to satisfy the following items: 1.7〇&lt;Ν1/&lt;1 9〇...^ 9) 22 M357610 The upper limit of the formula (9) is a high-priced material. The reason for becoming a success. In addition, in the optical materials that can be used at present, the higher the refractive index becomes, the higher the refractive index becomes, and the Abbe number is reduced. As a result, a material having a small Abbe number is required, which makes it difficult to correct. The chromatic aberration of magnification. When the lower limit of the conditional expression (9) is exceeded, the refractive index of the material is too low, and it is difficult to achieve wide angle, or to obtain a necessary refracting power, the shape having a small radius of curvature of the surface on which the image forming side is difficult to be processed is a cause of cost increase. In the photographic lens according to the embodiment of the present invention, the Abbe number of the d line of the lens having the positive refractive power of the cemented lens LC is h, and the lens having the negative refracting power constituting the cemented lens ^ is formed. When the Abbe number of the d line is y 11 , it is preferable to satisfy the following conditional expressions 〇〇) and (11). 30&gt; Y „ ...(1〇) γ ρ>35 (11) 15 By selecting the material of the cemented lens so that the conditional expressions (10) and (11) are satisfied, the axial chromatic aberration and the magnification chromatic image can be well corrected. In addition, in the imaging lens according to the embodiment of the present invention, when the optical surface diameter of the surface on the imaging side of the first lens is LD and the curvature radius of the surface on the imaging side of the first lens is R2 Preferably, the following conditional expression (12) is satisfied: 1.7 &lt; LD / R2 &lt; 2.0 (12) It should be noted that the optical surface diameter is the diameter of the region acting as the optical lens surface, In the embodiment, as shown in FIG. 2, the first through 23 M357610 1.2 &lt;fi/f2<3_0 (15) exceeds the upper limit of the conditional expression (15), 刖笙.^ τ 贝·! The first lens L1 The diopter becomes too weak, and it is difficult to achieve wide angle, or the first lens L1 is enlarged.

10 15 20 The lower limit of conditional expression (15) makes it difficult to correct _ aberration and field curvature. In addition, in the photographic lens according to the embodiment of the present invention, it is preferable that the radii of the surface of the object side of the first lens L j is the center of the first lens, and the distance φ is f. The conditional expression (16) below is satisfied. 1〇.〇&lt;ΐνί·&lt;20.〇...(16) When the upper limit of the conditional expression (16) is exceeded, the radius of curvature of the surface of the first lens L1❸ on the object side becomes too When the ambient light is sharply curved, the distortion aberration becomes large. When the conditional expression (16) is exceeded, the radius of curvature of the surface on the object side of the first lens u 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 L1 disposed closest to the object side is preferably used to be more resistant to surface cracking due to wind and rain, and direct sunlight. The temperature change is stronger than that of chemicals such as greases and detergents, that is, materials with high water resistance, weather resistance, high acid resistance, and high chemical resistance. The material of the first lens L1 is hard and not used. The material to be cut is preferably as the material of the first lens L1. Specifically, glass is used, or transparent ceramics can be used. Ceramics have higher strength and higher heat resistance than ordinary glass. It is preferable to use a plastic material as the material of the first lens L2 and the fourth lens L4. By using the material of the second lens L2 and the fourth lens L4 as plastic 25 M357610, it is possible to accurately produce an aspherical shape with low precision. Chemical.

As a second reading

Glass, which can suppress deterioration of performance due to temperature changes. For example, the use of this creation in a car camera requires a summer in the cold region to the summer in the tropics.

It should be noted that the light beam passing through the effective path between the lenses may become stray light and reach a ghost image on the image forming surface. Therefore, it is preferable to provide a light blocking member for cutting off the stray light as needed. As the light-shielding member, for example, an opaque paint may be applied to the outer portion of the effective diameter of the image forming side of the lens, or an opaque plate may be provided. Further, as the light shielding member, an opaque plate material may be provided on the optical path of the light beam that becomes stray light. As an example, Fig. i shows an example in which the light shielding members 11 and 12 are provided on the imaging side surfaces of the first lens L1 and the second lens L2, respectively. 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 a photographic lens according to the present invention will be described. &lt;Example 1&gt; 26 M357610 Fig. 4 is a view showing a lens configuration of a photographing lens according to Example 1, and Table 1 shows lens data. In Fig. 4, the symbols Ri, Di (i = 1, 2, 3, ...) correspond to Ri, Di of Table 1. [Table 1] Example 1 No. Ri Di Ndj Y dj 1 17ΤαΓ~ 1.00 1.8830 40.8 2 5.54 2.12 3* 24.88 1.35 1.5316 55.4 4* 2.12 3.05 5 19.25 2.00 1.9229 18.9 6 -10.14 1.95 7 (Aperture stop) 〇〇 0.81 8* *93.04 1.93 1.5316 55.4 9 * -2.02 6.10 10 -20.94 0.80 1.9229 18.9 11 * 4.38 3.30 1.8830 40.8 12* -6.37 1.16 13 〇〇0.50 1.5168 64.2 14 〇〇0.50 15 (imaging surface) oo

In the lens data of Table 1, the face number indicates that the surface of the constituent element closest to the object side is the i-th, and the 帛i〇 small 2, 3...) face numbers which are sequentially increased from the image side. It should be noted that the lens material of Table 1 also includes an aperture stop St and an optical member pp. 27 10 M357610 Rx of Table 1 represents the radius of curvature of the i-th (i=:Bu 2,3··.) faces, and Di represents the i-th (i=l, 2, 3...) faces and the i + The surface spacing on the optical axis of one face. In addition, 'Ndj| indicates that the optical element closest to the object side is set to the refractive index of the d-line of the first (j = 1, 2, &gt; Ydj represents the contiguous Abbe number of the ‘th optical element. In Table 1, the unit of curvature radius and surface interval is _, and the radius of curvature is set to be positive when the object side is convex, and negative when the image side is convex. In the lens data of Table 1, the aspherical surface is marked with * on the face number. Table 2 shows the respective coefficients κ and B3 to B20 of each of the 10 aspheric surfaces defined by the aspherical formula shown by the following mathematical expression 丨. [Math 1] GY2

Zh 1 + (1 — K * G2 Y2) 1 20Σ BmYn m 2

Zh. Aspherical depth (length of a vertical line from a point on the aspheric surface of height γ to a plane perpendicular to the optical axis in contact with the aspherical vertex) Y: height (distance from the optical axis) C: paraxial radius of curvature Reciprocal K, Bm: aspherical coefficient (m = 3 to 20) [Table 2] Example 1 No. K B3 B4 B5 B6 B7 B8 3 8.79E + 00 3.39E-02 -4.28E-03 -1.83E- 03 5.69E-04 -6.96H-05 2.10E-06 4 -1.39E + 01 1.90E-01 -4.16E-02 9.90E-04 5.68H-04 3.60E-05 -8.18E-05 8 -2.54E +12 3.58E-03 -3.11E-02 1.53E-02 -2.16E-02 2.13E-02 -9.36E-03 9 6.36E-0 1 5.38E-03 -5.01E-05 3.22E-03 -3.25 E-03 3.06E-03 -8.95E-04 28 M357610 Face No. B9 B10 B1 1 B12 B13 B14 B15 3 1.28E-07 2-39E-08 1.65E-09 • 1.3 6E-1 0 -4.61E-1 1 -1.77E-11 -3.96E-12 4 -5.85E-07 3.72E-07 3.56E-07 1.17E-07 1.85E-08 3.61E-09 2.67E-10 〇〇-2.29E-04 1.43E. 04 2.62E-04 -7.94E-05 7.77E-05 3.77E-05 5.96E-06 -1.1 0E-04 -1+57E-05 4.04E-06 7.2 6 E-06 1.21E-06 1.42E-07 -2.17E-07 Face No. B16 B17 Βίδ B19 B20 3 -4.85E-13 2.48E-14 6.52E-14 1.07E-14 -2.74E-15 4 -2.51E-10 -7. 03Ε-Π -4.73E-1 1 1.20H-12 1.46E-12 8 -1.19E-05 -4.24E-06 -3.55E-06 -1.49E-06 2.66E-06 y -2.34E-07 -8.70 E-08 -2.93E-08 9.10E-09 2.07E-08 Table 3 shows the various materials of the photographic lens involved in the example. In Table 3, the FNoj F value, ω is a half angle of view, [the distance from the object side surface of the first lens L1 of the entire system to the optical axis 2 of the imaging surface (back focus distance ^ air conversion), Bf is air conversion After the focal length, m is the maximum image height, LD is the optical surface diameter 'ED is effective #, f is the focal point of the whole system: giant 'fl is the focal length of the first lens U' f2 is the focal length of the second lens L2, 3 The focal length of the third lens L3, h is the combined focal length of the first lens u and the second lens 10 15 2, and f56 is the combination of the cemented lens LC composed of the fifth lens L5 and the sixth lens L6. c This is the focal length of the fourth lens L4 of ',,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, In the various materials of the table, the unit of ω is p w flat is the degree 'FNo. and the early position other than ω. [Table 3] Example 1

29 M357610 f 1.3 ED 9.8 fi -9.7 fl2 -2.5 f2 -4^4 ~~ f56 9.9 f3 7.4 f4 3.9 y_ Table 4 is not in the effective/end radius of curvature used in the above aspheric shape description Ρ1_χι, Ms, called and radius of curvature R3, R4, R8, R9 at the center of the corresponding face. [Table 4] Example 1

Pl-Xl 55.30 R3 24.88 P2-X2 3.74 R4 2.12 P3-X3 -5.51 R8 -93.04 P4-X4 -2.35 R9 -2.02 It should be noted that the meaning of the symbols in the above description to Table 4 is as follows. The embodiments are also the same. 10 ^ &lt;Example 2 &gt; Fig. 5 shows a lens configuration diagram of the imaging lens according to Example 2, Table 5 shows lens data, and Table 6 shows coefficients of each aspheric surface, Table 7 Table/, Various &gt; Table 8, Table 8 shows the effective diameter end and the radius of curvature at the center. In Fig. 5, the symbols Ri and Di correspond to Ri and Di of Table 5. Example 2 No. Ri Di Ndj Y dj 1 20.22 1.00 1.8348 42.7 2 ----- 5.71 1.97 30

M357610 3 * 25.01 1.35 1.5316 55.4 4 * 2.12 2.90 5 21.14 2.00 1.9229 18.9 6 -10.23 2.00 7 (Aperture diaphragm) 〇〇0.85 8* -93.89 1.97 1.5316 55.4 9* -2.05 0.10 10 -44.35 0.80 1.9229 18.9 11 4.38 3.30 1.8348 42.7 12 -6.37 1.13 13 〇〇0.50 1.5168 64.2 14 〇〇0.50 15 (image surface) 〇〇[Table 6] Example 2 Area No. K B3 B4 B5 B6 B7 B8 3 9.15E + 00 3.40E-02 -4.27 E-03 -1.83E-03 5.70E-04 -6.96E-05 2.10E-06 4 -1.41E + 01 1.90E-01 -4.17E-02 9.80E-04 5.67E-04 3.63E-05 -8.17 E-05 8 -2.54E+12 3.58E-03 -3.11E-02 1.54E-02 -2.15E-02 2.13E-02 -9.36E-03 9 6.40E-01 4.98E-03 -4.68E-04 3.ΠΕ-03 -3.26E-03 3.07E-03 -8.91E-04 Face No. B9 B10 B1 1 B12 B13 B14 B15 3 1.28E-07 2.38E-08 1.64E-09 -1.38E-10 -4.64E -11 •1.77E-11 -3.94E-12 4 -5.13E-07 4.00E-07 3.67E-07 1.22E-07 2.05E-08 4.17E-09 4.04E-10 8 -2.34E-04 1.38E -04 2.58E-04 -8.12E-05 7.70E-05 3.76E-05 6.09E-06 9 -1.08E-04 -1.53E-05 4.06E-06 7.17E-06 1.13E-06 9.02E-08 -2.45E-07 Face No. B16 B17 B18 B19 B20 3 -4.76E-13 2. 76E-14 6.60E-14 1.09E-14 -2.68E-15 4 -3.40E-10 -7. 1 1H-1 1 -4.70E-11 1.27E-12 1.45E-12 8 -1.17E-05 - 4.07E-06 -3.43E-06 -1.40H-06 2.71E-06 9 -2.47E-07 -9.18E-08 -3.01E-08 9.88E-09 2.19E-08 31 M357610 [Table 7] Example 2 FNo. 2.0 ω 81.7 L 20.2 IH 2.4 Bf 2.0 LD 10.1 f 1.3 ED 9.8 fl -9.8 fl2 -2.6 f2 -4.4 fs6 9.9 f3 7.7 f4 3.9

[Table 8] Example 2

Pl-Xl 40.03 R3 25.01 P2-X2 3.69 R4 2.12 P3-X3 -5.14 R8 -93.89 P4-X4 -2.37 R9 -2.05 &lt;Example 3 &gt; Fig. 6 shows a lens configuration diagram of the photographic lens according to Example 3. Table 9 shows the lens data, Table 10 shows the coefficients of the respective aspheric surfaces, Table 11 10 shows various materials, and Table 12 shows the effective diameter end and the radius of curvature at the center. In Fig. 6, the symbols Ri and Di correspond to Ri and Di of Table 9. [Table 9] Example 3 No. Ri Di Ndj Y dj 1 21.22 1.00 1.7725 49.6 2 5.28 1.00 32 M357610 3* 3.61 1.25 1.5087 56.0 4 * 1.33 3.15 5 24.02 3.00 1.9229 18.9 6 -51.28 1.50 7 (Aperture stop) 〇 〇0.00 8* 11.16 3.00 1.5087 56.0 9* -2.25 0.00 10 -47.42 2.80 1.8348 42.7 11 -2.21 1.11 1.9229 18.9 12 -6.91 1.88 13 〇〇0.50 1.5168 64.2 14 〇〇0.50 15 (Imaging surface) 〇〇

[Table 〇] Example 3 No. K B3 B4 B5 B6 B7 B8 3 - 1.54E-01 1.20E-02 -4.78E-03 -1.05E-03 4.25E-04 -3.05E-05 -1.73E- 06 4 -3.95E + 00 2.01E-01 -4.50E-02 5.14E-04 3.75E-04 3.25E-05 -4.48E-05 8 -2.89E + 01 -6.37E-03 -1.01E-02 8.50 E-03 1.01E-02 -2.98E-02 1.34E-02 9 5.12E-01 -1.64E-02 2.91E-02 -1.36E-02 -4.18E-03 7.60E-03 -2.37E-03

[Table 11] Example 3 FNo. 2.0 ω 81.7 L 20.5 IH 2.4 Bf 2.7 LD 9.6 f 1.4 ED 9.2 fi - 9.4 fl2 -2.8 f2 -5.1 f56 12.0 33 M357610 『3 18.1 f4 4.0 [Table 12] Example

Pl-Xl 11.10 R3 P2-X2 3.52 R4 P3-X3 55.85 R8 P4-X4 -2.48 R9 3.61 'T3T' ΉΠό- ^2725- 5 &lt;Example 4 &gt; Figure 7 shows the photographic mirror according to Example 4. The lens configuration is shown in the figure. The table indicates the lens data, the table indicates the coefficients of each aspheric surface, and the table 15 indicates various materials. Table 16 shows the radius of curvature of the effective diameter % at the center. In Fig. 7, the symbols Ri and Di correspond to Ri and Di of the table U. 10 [Table 13] Example 4 No. Ri Di^- 1 17.18 2 5.22 1.6Γ^- 3* 10.63 4* 2.22 2.74^- 5 -131.57 2.00^-- 6 -11.37 7 (Aperture diaphragm) 〇〇8 * -31.35 2.71^- 9 * -2.34 0.10^- 10 13.72 0.8〇^-~ 11 3.33 4.0〇^-- Ndj 1.8348 1.5087 2.1435 1.5087 V dj 42.7 56.0 17.08 56.0 2.1435 T.8348 17.8 ~42?7~ 34 M357610 12 5.50 1.30 13 〇〇0.50 1.5168 64.2 14 〇〇0.50 1 5 (imaging surface) 〇〇[Table 14] Example 4

No. K B3 B4 B5 B6 B7 3 -4.61E + 00 2.53E-02 -3.71E-03 -1.72E-03 5.83E-04 -6.83E-05 4 -1.51E + 01 1.83E-01 -4.66E -02 1.45E-03 8.09E-04 9.83E-05 8 -2.52E+10 -2.36E-03 -1.47E-02 1.26E-02 -2.34E-02 2.18E-02 9 7.61E-01 -1.18 E-03 7.78E-03 4.67E-04 -3.73E-03 3.27E-03 Face No. B8 B9 B10 B11 B12 B13 3 2.16E-06 1.20E-07 2.08E-08 1.21E-09 -1.55E-10 -2.64E-11 4 -6.93E-05 1.46E-06 5.62E-07 3.25E-07 9.10E-08 8.11E-09 8 -8.44E-03 2.24E-04 1.97E-04 2.12E-04 - 1.29E-04 2.53E-05 9 -7.40E-04 -5.83E-05 -7.08E-06 2.27E-06 5.23E-06 4.12E-07 Face No. B14 B15 B16 B17 B18 3 -9.60E-12 - 2.19E-12 -3.77E-13 -7.29E-14 2.67E-14 4 3.82E-10 -5.14E-10 -4.20E-10 -9.52E-1 1 -4.27E-11 8 -1.07E-05 5.41E-07 •3.07E-06 -2.29E-16 -2.05E-16 9 9.61E-08 -3.18E-08 -5.92E-08 -5.11E-09 -3.28E-09 [Table 15] Example 4 FNo. 2.0 ω 78.2 L 21.1 IH 2.4 Bf 2.1 LD 9.3 f 1.4 ED 9.0 fi -9.3 fl2 -3.1 f2 -5.7 f56 7.0 35 M357610 f3 10.8 f4 4.8 [Table 16] Example 4 P1-X1 13.51 R3 10.63 P2- X2 3.41 R4 2.22 P3-X3 -4.79 R8 -31.35 P4-X4 - 2.75 R9 - 2.34 φ 5 <Example 5 &gt; Fig. 8 shows a lens configuration diagram of the imaging lens according to Example 5, Table 17 shows lens data, and Table 18 shows coefficients of respective aspheric surfaces, Table 19 Indicates various materials, 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 Y dj 1 20.96 1.00 1.7725 49.6 2 5.93 2.62 3* 31.59 1.35 1.5316 55.4 4 * 2.10 3.50 5 20.35 2.00 1.8467 23.8 6 -9.17 2.31 7 (Aperture diaphragm) 〇〇0.79 8* -100.63 2.23 1.5316 55.4 9 * -2.14 0.10 10 -228.01 0.80 1.9229 18.9 11 4.38 3.30 1.7130 53.9 36 M357610 12 -6.37 1.18 13 〇〇0.50 1.5168 64.2 14 〇〇0.50 1 5 (imaging surface) 〇〇[Table 18] Example 5

No. Κ Β3 Β4 Β5 Β6 Β7 Β8 3 1.09Ε + 01 3.36Ε-02 -4.27Ε-03 -1.83Ε-03 5.70Ε-04 -6.96Ε-05 2.10Ε-06 4 -1.41Ε + 01 1.90Ε- 01 -4.18Ε-02 9.5ΙΕ-04 5.60Ε-04 3.46Ε-05 -8.21Ε-05 8 -2.54Ε+12 4.99Ε-03 -2.92Ε-02 1.62Ε-02 -2.13Ε-02 2.13Ε 02 -9.44Ε-03 9 6.33Ε-01 6.08Ε-03 1.98Ε-04 3.11Ε-03 -3.35Ε-03 3.02Ε-03 -8.98Ε-04 Face number Β9 Β10 Β11 Β12 Β13 Β14 Β15 3 1.26Ε- 07 2.33Ε-08 1.53Ε-09 -1.62Ε-10 -5.11Ε-11 -1.86Ε-11 -4.09Ε-12 4 -6.67Ε-07 3.47Ε-07 3.48Ε-07 1.15Ε-07 1.85Ε- 08 3.80Ε-09 3.83Ε-10 δ -2.98Ε-04 9.81Ε-05 2.37Ε-04 -9.07Ε-05 7.35Ε-05 3.66Ε-05 6.13Ε-06 9 -1.04Ε-04 •1.02Ε- 05 7.37Ε-06 8.85Ε-06 1.83Ε-06 3.25Ε-07 -2.00Ε-07 Face No. 16 Β17 Β18 Β19 Β20 3 -5.00Ε-13 2.35Ε-14 6.56Ε-14 1.10Ε-14 -2.66Ε -15 4 -2.01Ε-10 -6.58Ε-11 -4.70Ε-11 1.17Ε-12 1.37Ε-12 8 -1.14Ε-05 -3.82Ε-06 -3.26Ε-06 -1.31Ε-06 2.77Ε 06 9 -2.60Ε-07 -1.13Ε-07 -4.55Ε-08 1.67Ε-09 1.87Ε-08 5 [Table 19] Example 5 FNo. 2.0 ω 78.8 L 22. 0 IH 2.4 Bf 2.0 LD 10.7 f 1.3 ED 10.4 fl -11.0 fl2 -2.5 f2 -4.3 f56 14.0 37 M357610 f3 7.7 f4 4.1 [Table 20] Example 6 P1-X1 -327.70 R3 31.59 P2-X2 3.99 R4 2.10 P3- X3 - 5.37 R8 - 100.63 P4-X4 - 2.50 R9 - 2.14 5 &lt;Example 6 &gt; Fig. 9 is a view showing a lens configuration of a photographing lens according to Example 6, Table 21 shows lens data, and Table 22 shows each aspherical surface. The various coefficients, Table 23 shows various materials, 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. 10 [Table 21] Example 6 No. Ri Di Ndj Y dj 1 21.66 1.00 1.7725 49.6 2 6.09 3.16 3 * 39.18 1.35 1.5316 55.4 4 * 2.12 3.65 5 26.93 2.00 1.8467 23.8 6 -8.81 2.68 7 (Aperture stop) 〇〇 0.66 8* -116.39 2.37 1.5316 55.4 9 * -2.19 0.10 10 58.29 0.80 1.8467 23.8 11 4.38 3.30 1.7130 53.9 38 M357610 12 -6.37 1.15 13 〇〇0.50 1.5168 64.2 14 〇〇0.50 1 5 (Imaging surface) 〇〇[Table 22 Example 6

No. K B3 B4 B5 B6 B7 B8 3 9.93E + 00 3.34E-02 -4.27E-03 -L.83E-03 5.70E-04 -6.96E-05 2.09E-06 4 -1.54E + 01 1.90E -01 -4.19E-02 9.22E-04 5.54E-04 3.32E-05 -8.24E-05 8 -2.54E+12 7.82E-03 -2.96E-02 1.57E-02 -2.15H-02 2.13E -02 -9.38E-03 9 6.36E-01 6.15E-03 2.81E-04 2.97E-03 -3.47H-03 2.97E-03 -9.11E-04 Face No. B9 B10 B11 B12 B13 B14 B15 3 1.25E -07 2.30E-08 1.47E-09 -1.72E-10 -5.28E-1 1 •1.88E-11 -4.13E-12 4 -7.33E-07 3.32E-07 3.45E-07 1.15E-07 1.86 E-08 3.94E-09 4.49E-10 8 -2.41E-04 1.34E-04 2.52E-04 •8.89E-05 6.91E-05 3.07E-05 8.81E-07 9 -1.04E-04 -7.73 E-06 9.28E-06 9.89E-06 2.29E-06 4.91E-07 -1.56E-07 Face No. B16 B17 B18 B19 B20 3 -5.03E-13 2.37E-14 6.58E-14 1.10E-14 - 2.63E.15 4 -1.83E-10 -6.36E-1 1 -4.66E-11 1.02E-12 1.34E-12 8 -1.51E-05 -5.96H-06 -4.15E-06 -1.32E-06 3.28E-06 9 -2.58E-07 -1.21E-07 •5.30E-08 3.20E-09 1.61E-08 5 [Table 23] Example 6 FNo. 2.0 ω 79.5 L 23.1 IH 2.5 Bf 2.0 LD 1 1.2 f 1.3 ED 10.9 fl -11.3 fl2 -2.5 fi -4.3 f56 21.1 39 M357610 f3 8.0 f4 4.2 [Table 24] Example 6 P1-X1 -29.02 R3 39.18 P2-X2 4.49 R4 2.12 P3-X3 -5.43 R8 -116.39 P4-X4 -2.51 R9 -2.19 φ 5 &lt;Example 7 &gt; Figure 10 The lens configuration diagram of the photographing lens according to Example 7 is shown, Table 25 shows lens data, Table 26 shows coefficients of each aspherical surface, Table 27 shows various materials, and Table 28 shows the effective diameter end and the radius of curvature at the center. In Fig. 10, symbols Ri and Di correspond to Ri and Di of Table 25. 10 [Table 25] Example 7 No. Ri Di Ndj Y dj 1 18.57 1.00 1.8830 40.8 2 5.73 2.64 3* 55.36 1.35 1.5316 55.4 4 * 2.07 3.48 5 13.21 2.00 1.7215 29.2 6 -7.96 2.58 7 (Aperture diaphragm) 〇〇 0.57 8* -164.04 2.00 1.5316 55.4 9 * -2.00 0.10 10 -21.14 0.80 1.9229 18.9 11 4.38 3.30 1.7130 53.9 40 M357610 12 -6.37 1.40 13 〇〇0.50 1.5168 64.2 14 〇〇0.50 15 (Imaging surface) 〇〇[Table 26 Example 7

No. K B3 B4 B5 B6 B7 B8 3 3.76E + 01 3.31E-02 -4.25E-03 -1.82E-03 5.70E-04 -6.96E-05 2.09E-06 4 -1.36E + 01 1.90E- 01 -4.18E-02 9.26E-04 5.55E-04 3.35E-05 -8.23E-05 8 -2.54E+12 1.52ΕΌ2 -3.78E-02 1.29E-02 -2.16E-02 2.18E-02 - 9.06E-03 9 6.50E-01 8.61E-03 -1.06E-04 3.08E-03 -3.27E-03 3.04E-03 -9.17E-04 Face No. B9 B10 B11 B12 B13 B14 B15 3 1.22E-07 2.23E-08 1.32E-09 -1.99E-10 -5.75E-1 1 -1.96EI 1 -4.24E-12 4 -7.05E-07 3.41E-07 3.48E-07 1.16E-07 1.86E-08 3.85E-09 3.90E-10 8 -1.69E-04 7.06E-05 1.49E-04 -1.84E-04 1.65E-07 -1.17E-05 -2.05E-05 9 -1.25E-04 -2.39E -05 -5.16E-08 5.26E-06 2.08E-07 -3.72E-07 -4.77E-07 Face No. B16 B17 B18 B19 B20 3 -5.20E-13 2.22E-14 6.56E-14 1.10E-14 -2.64E-15 4 -2.00E-10 -6.30E-1 1 -4.58E-11 1.16E-12 1.35E-12 8 -2.2IE-05 -4.02E-06 2.58E-06 7.48E-06 1.25 E-05 9 -3.52E-07 -1.25E-07 -2.61E-08 3.02E-08 4.65E-08 5 [Table 27] Example 7 FNo. 2.0 ω 77.2 L 22.1 IH 2.4 Bf 2.2 LD 10.3 f 1.3 ED 10.0 fi -9.7 fl2 -2.3 f2 -4.1 f56 24.2 41 M357610 f3 7. 2 f4 3.8 [Table 28] Example 7 P1-X1 - 34.20 R3 55.36 P2-X2 4.20 R4 2.07 P3-X3 - 4.57 R8 -164.04 P4-X4 - 2.25 R9 - 2.00 5 &lt;Example 8 &gt; • Figure 11 The lens configuration diagram of the photographing lens according to the eighth embodiment is shown, the lens data is shown in Table 29, the coefficients of each aspherical surface are shown in Table 30, the various data are shown in Table 31, and the effective radius end and the radius of curvature at the center are shown in Table 32. In Fig. 11, the symbols Ri and Di correspond to Ri and Di of Table 29. 10 [Table 29] Example 8 No. Ri Di Ndj Y dj 1 15.55 1.50 1.8830 40.8 2 4.81 2.29 3* 25.92 1.35 1.5316 55.4 4 * 2.18 2.73 5 15.91 2.00 1.9229 18.9 6 -9.92 1.86 7 (Aperture stop) 〇〇 0.73 8* -83.08 1.79 1.5316 55.4 9 * -2.06 0.10 10 -22.37 0.80 1.9229 18.9 11 4.38 3.30 1.8830 40.8 12 -6.37 1.17 42 M357610 13 〇〇0.50 1.5168 64.2 14 〇〇0.50 1 5 (Imaging surface) 〇〇[Table 30] Example 8 No. K B3 B4 B5 B6 B7 B8 3 7.29E + 00 3.38E-02 -4.30E-03 -1.83E-03 5.69E-04 -6.97E-05 2.08E-06 4 -1.51E + 01 1.89E-01 -4.18E-02 9.38E-04 5.56E-04 3.33E-05 -8.26E-05 8 -2.54E+12 3.08E-03 -3.11E-02 1.54E-02 -2.15E -02 2.13E-02 -9.41E-03 9 6.46E-01 4.28E-03 -3.60E-04 3.03E-03 -3.35E-03 3.01E-03 -9.16E-04 Face No. B9 B10 B11 B12 B13 B14 B15 3 1.24E-07 2.32E-08 1.53E-09 -1.57E-10 •4.99E-11 -1.84E-1 1 -4.08E-12 4 -7.87E-07 3.14E-07 3.40E-07 1.14E-07 1.83E-08 3.77E-09 3.48E-10 8 -2.68E-04 1.14E-04 2.43E-04 -9.08E-05 7.15E-05 3.46E-05 4.74E-06 9 -1.18 E-04 -1.87E-05 3.0 9E-06 6.98E-06 1.14E-06 1.24E-07 -2.26E-07 Face No. B16 B17 B18 B19 B20 3 -5.07E-13 2.09E-14 6.45E-14 1.06E-14 -2.76E-15 4 -2.25E-10 -6.27E-11 -4.53Ε-Π 1.63E-12 1.46E-12 8 -1.21E-05 -4.02E-06 -3.16E-06 -1.05E-06 3.06E-06 9 -2.43E-07 -9.45E-08 -3.54E-08 4.63E-09 I.77E-08

[Table 31] Example 8 FNo. 2.0 ω 78.0 L 20.5 IH 2.4 Bf 2.0 LD 9.1 f 1.3 ED 9.0 fi -8.4 fl2 -2.4 f2 -4.6 "56 9.7 f3 6.9 f4 3.9 43 M357610 [Table 32] Example 8 P1 -X1 51.60 R3 25.92 P2-X2 3.74 R4 2.18 P3-X3 -5.21 R8 -83.08 P4-X4 -2.31 R9 -2.06 &lt;Example 9 &gt; 5 Figure 12 shows a lens configuration diagram of the photographic lens according to Example 9. Table 33 shows lens data, Table 34 shows the coefficients of each aspherical surface, Table 35 shows various materials, 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] 10 Example 9 No. Ri Di Ndj Y dj 1 18.05 1.00 1.8830 40.8 2 5.18 2.20 3* -11.27 1.00 1.5087 56.0 4 * 2.41 2.36 5 18.96 2.25 1.9229 18.9 6 -10.53 2.30 7 (Aperture stop) 〇 〇0.83 8* 170.17 2.42 1.5087 56.0 9* -2.31 0.10 10 2243.63 0.80 1.9229 18.9 11 4.48 3.50 1.8830 40.8 12 -6.53 1.28 13 〇〇0.50 1.5168 64.2 44 M357610 14 〇〇0.50 1 5 (image surface) 〇〇[Table 34 Example 9 No. K B3 B4 B5 B6 B7 B8 3 7.29E + 00 3.38E-02 • 4.30E-03 -1.83E-03 5.69E-04 -6.97E-05 2.08E-06 4 -1.51E + 01 1.89E-01 -4.18E-02 9.3SE-04 5.56E-04 3.33E-05 -8.26E-05 8 -2.54E+12 3.08E-03 -3.11E-02 1.54E-02 -2.15E- 02 2.13E-02 -9.41E-03 9 6.46E-01 4.28E-03 -3.60E-04 3.03E-03 -3.35E-03 3.01E-03 -9.16E-04 Face No. B9 B10 B11 B12 B13 B14 B15 3 1.24E-07 2.32E-08 1.53E-09 -1.57E-10 -4.99E-11 -1.84E-1 1 4.08E-12 4 -7.87E-07 3.14E-07 3.40E-07 1.14E -07 1.83E-08 3.77E-09 3.48E-10 8 -2.68E-04 1.14E-04 2.43E-04 -9.08E-05 7.15E-05 3.46E-05 4.74E-06 9 -1.18E- 04 -1.87E-05 3.0 9E-06 6.98E-06 1.14E-06 1.24E-07 -2.26E-07 Face No. B16 B17 B18 B19 B20 3 •5.07E-13 2.09H-14 6.45E-14 1.06E-14 -2.76E-15 4 -2.25E-10 -6.27E-11 -4.53E-11 1.63E-12 1.46E-12 8 -1.21E-05 -4.02E-06 -3.16E-06 -1.05E-06 3.06E-06 9 -2.43E-07 -9.45E-08 -3.54E-08 4.63E-09 1.77E-08

[Table 35] Example 9 FNo. 2.0 ω 79.8 L 20.9 IH 2.4 Bf 2.1 LD 9.2 f 1.2 ED 9.1 fl -8.5 fl2 -2.2 f2 -3.8 f56 7.8 fa 7.6 f4 4.5 45 M357610 [Table 36] Example 9 P1- X1 R3 -11.27 ~ P2-X2 4730 ~~R4 2.41 P3-X3 -9.81 R8 170.17 ' P4-X4 -2T9l~~ R9 -2.31 Example 9 Table 37 shows the conditional expressions of the photographic lenses of Examples 1 to 9. (The value corresponding to Lu to (16). As is known from Table 37, Examples 1 to 9 all satisfy the conditional expressions (1) to (16). [Table 37]

_Conditional--Implementation (1) (2) (3) (4) (5) (6) Π (7) (8) Example ED/RL/f Bf/f fn/f f3/f f5fi/f d7 /d6 1 18.90 1.77 15.99 1.56 -1.99 5.83 7.78 0.42 2 18.90 1.72 15.60 1.51 -1.99 5.95 7.67 0.42 3 18.90 1.74 15.03 1.99 -2.07 13.24 8.82 0.00 4 17.80 1.73 15.41 1.55 -2.26 7.87 5.11 0.60 5 23.80 1.75 16.75 1.53 -1.93 5.86 1 10.68 0.34 6 23.80 1.78 17.35 1.49 -1.87 6.06 15.85 0.25 7 29.20 1.75 16.53 1.67 -1.74 5.37 18.11 0.22 8 18.90 1.88 15.66 1.53 -1.85 5.26 7.45 0.39 9 18.90 1.76 17.68 1.79 -1.85 6.45 6.58 0.36 Conditional implementation (9) ( 10) (ID (12) (13) (14) (15) (16) Example VV V η VP LD/R f2/f Di/f fi/f2 Ri/f 1 1.88 18.90 40.80&quot; 1.81 -3.48 0.78 2.18 13.36 46 M357610 2 1.83 18.90 42.70 1.77 -3.43 0.77 2.21 15.61 3 1.77 18.90 42.70 1.81 -3.72 0.73 1.84 15.55 4 1.83 17.80 42.70 1.79 -4.19 0.73 1.63 12.54 5 1.77 18.90 53.90 1.81 -3.27 0.76 2.57 15.94 6 1.77 23.80 53.90 1.84 -3.21 0.75 2.64 16.30 7 1.88 18.90 53.90 1.79 -3.05 0.75 2.39 13.92 8 1.88 18.90 40.80 1.89 -3.49 1 .15 1.85 Γΐΐ.91 9 1.88 18.90 Π40.80 1.78 -3.23 0.85 2.24 15.29 Fig. 13 to Fig. 21 show spherical aberration, astigmatic aberration, and distortion aberration (distortion aberration) of the photographic lens according to the nineteenth embodiment, respectively. ), aberration diagram of magnification chromatic aberration. Each aberration diagram shows an image 5 difference in which the d line is the reference wavelength. However, the spherical aberration diagram and the magnification chromatic aberration diagram also show images about the F line (wavelength 486.1 nm) and the C line (wavelength 656.3 nm). difference. The distortion aberration map uses the focal length f of the entire system and the half angle of view 变 (variable processing, 〇 &lt; θ $ ω ), and sets the ideal image height to fxtane, indicating the amount of deviation from them. The FNo. of the spherical aberration diagram is the F value, and the other aberration diagrams represent the half-view 1 corner. As is apparent from Figs. 13 to 21, the above-described Embodiments 1 to 9 satisfactorily correct various aberrations. The photographic lenses of Embodiments 1 to 9 are suitably provided with two aspherical lenses 'to achieve cost reduction of the same 胄' to achieve good optical performance. The non-spherical eve, the number of eclipses, the higher the aberration correction ability, but the number of aspherical lenses changes: when all the materials are made of plastic, the temperature is weaker than the temperature change: 4, etc. When it is glass, there are disadvantages such as an increase in cost. 15 M357610 =&quot;The photographic lens of 9 has good optical performance, and has a bright optical system of F: 2.0 and wide angle, which can obtain an image of one to the picture mi, so 'can be used for photographing the front of the car , car camera or surveillance camera with side, rear 4 images. 10 15 20 : 22 is a state in which the photographing and photographing apparatus of the present embodiment is mounted on the automobile (10). In Fig. 22, the car 〇〇 has a side exterior camera 1〇1 for the dead angle range of the I side surface of the hand side, and a rear side exterior camera 102 for shooting the dead angle range of the rear side of the α car 100, Mounted on the back side of the rearview mirror, the in-vehicle camera, the outer camera 101 and the exterior camera 1〇2 and the in-vehicle camera (8), which are in the same field of view as the driver, are equipped with a photographic lens according to the embodiment of the present invention! And a photographic element 5 that converts an optical image formed by the photographic lens 1 into an electrical signal. As described above, the imaging lens i according to the embodiment of the present invention has a small optical size and a light weight, and has excellent optical performance. Therefore, the side surface and the rear side exterior camera can be configured in a small and lightweight manner, and the vehicle can be installed in the vehicle. The camera 1〇3' can image a good image on the photographic surface of its photographic element 5. Although the present invention has been described above by way of embodiments and examples, the present invention is not limited to the above embodiments and may be various modifications. For example, the values of the radius of curvature, the interplanar spacing, and the refractive index of each lens component may not be limited to the values shown in the above numerical examples, and other values may be employed. Further, in the embodiment of the photographing apparatus, an example in which the present invention is applied to the on-vehicle camera has been illustrated. However, the present invention is not limited to this use, and for example, it can be applied to a camera for a portable terminal or a surveillance camera. 48 M357610 [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. 5 is a view for explaining a surface shape of a second lens. Fig. 4 is a cross-sectional view showing a lens configuration of an imaging lens according to Example 1 of the present invention. Fig. 5 is a cross-sectional view showing the configuration of a lens of the imaging lens according to the second embodiment of the present invention. 10 is a perspective view showing a photographic lens according to a third embodiment of the present invention.

Cross-sectional view D of the mirror structure Fig. 7 is a cross-sectional view showing the lens configuration of the imaging lens according to Example 4 of the present invention. Fig. 8 is a view showing the structure of a five-mirror lens of the imaging lens according to the fifth embodiment of the present invention. Fig. 9 is a cross-sectional view showing a configuration of a mirror of a photographic lens according to a sixth embodiment of the present invention. Fig. 10 is a cross-sectional view showing a lens configuration of an imaging lens according to Example 7 of the present invention. Fig. 11 is a cross-sectional view showing a lens configuration of an imaging lens according to Example 8 of the present invention. Fig. 12 is a cross-sectional view showing a lens configuration of an imaging lens according to Example 9 of the present invention. 49 M357610 Fig. 13 is a view showing aberrations of the imaging lens according to the first embodiment of the present invention. The figure shows the aberration circle of the imaging lens according to the second embodiment of the present invention. Fig. 疋 shows aberration diagrams of the photographing lens according to Example 3 of the present creation. Fig. 16 is a diagram showing aberrations of the imaging lens according to the fourth embodiment of the present invention, and Fig. 17 is an aberration diagram of the imaging lens 10 according to the fifth embodiment of the present invention. Fig. 8A is a view showing aberrations of the imaging lens according to Example 6 of the present invention. ® 19 is the aberration 圊 of the photographic lens according to Example 7 of the table creation. @20 is an aberration diagram showing the photographic lens according to the fourth embodiment of the present creation. '圊21 is the aberration 圊 of the imaging lens according to the ninth embodiment of the present invention. Fig. 22 is a view for explaining the arrangement of the in-vehicle imaging device 20 according to the embodiment of the present invention. i〇〇Car 102 rear side exterior camera [main component symbol description] 1 photographic lens 1 〇1 side exterior camera 50 M357610 103 interior camera 12 first shading part 2 ω full viewing angle 4 upper side off-axis light ED effective diameter L2 second lens L4 fourth lens L6 sixth lens LD optical surface diameter ΡΡ optical member R2 radius of curvature of the second face R4 radius of curvature of the fourth face R6 radius of curvature of the sixth face R8 radius of curvature of the eighth face R10 tenth The radius of curvature of the face R12 The radius of curvature of the twelfth face R14 The radius of curvature of the thirteenth face The axis of the light 11 The first light-shielding member 2 The light on the axis 3 The lower-axis off-axis light 5 The photographic element L1 The first lens L3 Three lens L5 fifth lens LC cemented lens Pim imaging position R1 curvature of the first face half R3 radius of curvature of the third face R5 radius of curvature of the fifth face R7 radius of curvature of the seventh face ninth face Curvature radius R11 eleventh face curvature radius R13 thirteenth face curvature radius St aperture track CQ2 with the absolute value of the radius of curvature at the intersection of the image side of the second lens and the optical axis a circle of radius, its circle Located on the optical axis, and the circle passes through the intersection of the image-side surface of the second lens and the optical axis CX2 with a radius of the radius of curvature of the effective-diameter end of the image-side surface of the second lens. , the center of the circle is located on the optical axis, and the circle passes through the effective path end point of the image side of the second lens 51 M357610 D1 the first face and the face of the second face are spaced apart from the first face D2 The third surface, the interplanar spacing D3 on the optical axis, the interplanar spacing D4 on the optical axis of the third and fourth faces, and the fifth interval on the optical axis of the fourth and fifth faces. The surface spacing D6 on the optical axis of the face and the sixth face and the face interval D7 on the optical axis of the sixth face and the seventh face are the eighth interval on the optical axis of the seventh face and the eighth face. Face spacing on the optical axis of the face and the ninth face D9 Face spacing on the optical axis of the ninth and tenth faces of the ninth face D10 The face spacing D11 on the optical axis of the tenth face and the eleventh face The surface spacing D12 on the optical axis of the eleventh and twelfth faces and the surface spacing D13 on the optical axis of the twelfth and thirteenth faces are the thirteenth face and the fourteenth The plane spacing D14 on the optical axis is the plane spacing H2 on the optical axis of the fourteenth surface and the fifteenth surface. The effective path end of the imaging side of the second lens is the normal line P2 of the lens surface. The intersection of the normal of the lens surface and the optical axis of the effective path end of the surface of the lens on the imaging side / Q2 The intersection of the image side of the second lens and the optical axis X2 The effective path of the image side of the second lens End point 52

Claims (1)

M357610 VI. Patent Application Range: 1. A photographic lens comprising: a first lens having a meniscus shape in order from the object side, having a negative refracting power and having a concave surface toward the imaging side; and a second lens having an imaging side thereof The five faces are concave in shape near the optical axis, and at least one side has an aspherical shape, the third lens has a positive refracting power, the light barrier, and the fourth lens has a positive refracting power and at least one side is non- a spherical shape; a cemented lens formed by joining a fifth lens and a sixth lens having a positive refracting power and a negative refracting power, and having a positive refracting power as a whole, wherein the third lens is made of glass, When the Abbe number of the d-line of the third lens is set to ^3, the following conditional expression is satisfied: Y 3 &lt; 30 (1) 0 2. A photographic lens comprising: a first lens having a meniscus shape in order from the object side, having a negative refracting power and having a concave surface toward the imaging side; and a second lens having a concave side in the vicinity of the optical axis while at least one side is Aspherical shape; a third lens having a positive refracting power; a fourth lens having a positive refracting power and at least a face having an aspherical shape; and a cemented lens having a positive refracting force by joining any one of the squares The other side has a fifth lens and a sixth lens having a negative refracting power, and has a positive refracting power as a whole, and an effective diameter of a surface on the imaging side of the first lens is set to a surface on the imaging side of the first lens. When the radius of curvature is set to &amp;, the following conditional expression (2) is satisfied: 1 · 65 &lt; ED/R〗 &lt; 2·0 (2) 〇 53 M357610 3. A photographic lens including: The side surface is provided with: a first lens having a meniscus shape having a negative refracting power and having a concave surface toward the imaging side; and a second lens having at least an imaging surface having an aspherical shape, the surface of the imaging side being near the optical axis Concave 5 The shape and the negative diopter are formed in such a manner that the effective diameter end is weaker than the center of the heart; the second lens has a positive diopter; the light barrier; the fourth lens has a positive refracting power, and at least the imaging side has an aspherical shape. The surface on the imaging side has a convex shape in the vicinity of the optical axis, and the positive refractive power is configured to be weaker than the center at the effective diameter end; the cemented lens has a positive refractive power of 10 positive transmissions and the other has a negative refractive power. The fifth lens and the sixth lens are 'and have a positive refracting power as a whole. The photographic lens according to any one of claims 1 to 3, wherein the focal length of the entire system is f, and the surface of the object side 5 of the first lens is on the optical axis of the imaging surface. When the distance is set to 匕 and the distance from the imaging side surface of the sixth lens to the optical axis of the imaging surface is set to be, the following conditional expressions (3) and (4) are satisfied: 15.0&lt; L/f &lt; 21.0 - (3) The photographic lens of claim 3, wherein the material of the third lens is broken. 6. The image of the second side of the second lens of the above-mentioned second lens, as described in any one of claims 1 to 3, which is a convex shape in the vicinity of the optical axis, and a positive refractive power at an effective diameter. The end is weaker than the center, or is configured to have a convex shape in the vicinity of the optical axis and a negative refracting power at the effective diameter end. 7. The photographic lens according to claim 1 or 2, wherein the image forming side surface of the second lens is configured such that the negative diopter is weaker than the center at the effective diameter end. The photographic lens according to any one of claims 1 to 3, wherein the object-side surface of the fourth lens has a concave shape in the vicinity of the optical axis and a negative diopter in an effective diameter. The way the end is stronger than the center. 9. The photographic lens according to claim 2, wherein the imaging side surface of the fourth lens has a convex shape in the vicinity of the optical axis, and the positive diopter is weaker at the effective diameter end. The way the center is structured. The photographic lens according to any one of claims 1 to 3, wherein the focal length of the (four) systems is f, and the combined focal length of the first lens and the second lens is set to 匕2, the following conditional expression (5) is satisfied: —2,5 &lt; f12/f &lt; — ι .5 ··· (5) 〇2〇11, as claimed in any of the patent scopes i to 3 In the photographic lens according to the above aspect, when the focal length of the entire system is f and the focal length of the third lens is f3, 'the following conditional expression (6) is satisfied: 5.0 &lt;f3/f&lt; 14*0 ·· (6) 〇55 M357610, the photography of 12, as claimed in the scope of patents 1 to 3 - mirror, where When the composite focal length of the six lenses is set to G, the following conditional expressions (7) 4.8 &lt; f56/f &lt; 19.0 - (7) are satisfied. The photographic lens according to any one of the preceding claims, wherein the distance from the image side of the third lens to the optical axis of the light barrier is set to Dp, the light is transmitted to the above Distance on the optical axis of the four lenses When D? is set, the following conditional expression (8) is satisfied: 0.0 &lt; D7/D6 &lt; 0.7 (8). The photographic lens according to any one of claims 1 to 3, wherein when the refractive index of the first lens with respect to the d-line is N1, the following conditional expression (9) is satisfied: 1.70&lt;1&gt; Nj &lt; 1.90 ··· (9). The photographic lens according to any one of the first to third aspects of the present invention, wherein the Abbe number of the d-line of the lens having the positive refractive power constituting the cemented lens is Yp, and the joint is formed. When the Abbe number of the d line of the lens having a negative refracting power of the lens is γ η, the following conditional expression (10) '(11): 30> Υ η .., (10 ) y ρ> 35 is satisfied. ·· (11). 56 M357610 ^Please refer to the patent scope! The lens according to any one of the preceding claims, wherein the optical surface of the surface on the imaging side of the first lens is LD, and the radius of curvature of the surface on the imaging side of the first lens is set to r 5 Conditional formula (12): 1-7 &lt; LD/R2 &lt; 2.0 - (12). The mirror according to any one of the preceding claims, wherein the second lens is made of plastic. The photographic lens according to any one of claims 1 to 3, wherein the fourth lens is made of a plastic material. The mirror according to any one of the preceding claims, wherein the focal length of the system 15 is f, and the distance from the object-side surface of the first lens to the optical axis of the imaging surface is set to B. , the following conditional formula (3) is satisfied. (3) 15.0&lt;L/f&lt; 21.0 影 透 〇 如 如 如 如 如 如 如 , , , , , , , , , , , When the focal length of the system is f, and the distance from the image side of the sixth lens to the optical axis of the image plane is Bf, the following condition (4) is satisfied: (4) 57