TWM366076U - Photographic lens and photographic device - Google Patents

Description

M366076 V. New description: [New technical field] 5 10 15 This series is about the use of CCD, CM called photographic components for car cameras or surveillance cameras (4) photographic lenses, especially _ kind of application == car The photographic lens of the on-vehicle camera 4 for images such as front, side, and rear. [Prior Art] In recent years, miniaturization and high pixels of photographic elements such as CCDs and CMOSs have been rapidly developed. Therefore, the main body of the photographing apparatus and the lens mounted thereon are small and lightweight. In addition, such a wide temperature range of the atmosphere of the atmosphere in the cold area such as the hot zone of the midsummer to the winter, such as the in-vehicle camera or the surveillance photography, is required to have a high degree of climaticity. ^ a) High-performance and inexpensive lens that is small and bright for use at night and also for the month b. In the past, there were many photographic lenses of five to seven-piece structures used as photographic lenses for on-vehicle cameras and surveillance cameras. However, the photographic lenses of five to seven-piece structures have no optical performance (4), but they are expensive. The disadvantage of large size and/or heavy weight. Therefore, in order to achieve performance that is practically problem-free, and to reduce the size and cost, it is conceivable to use a four-image photographic lens. Such a lens is known as, for example, the lens shown in the following Patent Documents 1 to 5. (4) Patent Document 5 discloses a lens optical system having a four-piece structure having a small overall number of lenses. Japanese Patent Laid-Open Publication No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. 01-128025. Patent Publication No. PCT Patent Publication No. Hei. Japanese Patent Laid-Open Publication No. Hei 09-258100, No. 5, Patent No. 5: U.S. Patent No. 6,282, G33, however, 'the above-mentioned Patent Documents 1 to 5 do not satisfy all aspects of brightness and viewing angle aberration at a high level. Further improvement in optical performance is desired in a four-piece lens optical system. 10 [New content] The present invention has been made in view of the above circumstances, and an object thereof is to provide a photographic lens that is small and inexpensive, has high optical performance, and an imaging device including the photographic lens. The photographic lens of the present invention includes, in order from the object side, a lens having a convex surface facing the object side and having a positive power and being a meniscus lens; a second lens which is a biconcave lens; a third lens having a convex surface facing the image side and having a positive power and being a meniscus lens; a fourth lens having a convex surface facing the object side and being a meniscus lens having a positive power, in the entire system When the focal length is f and the curvature half of the surface of the image side of the first lens is set to R2, the following conditional expression (1) is satisfied. 0.00<f/R2<0.13 (1) In the photographic lens of the present invention, the air conversion distance from the vertex of the image side of the fourth lens to the imaging surface is set to Bf, the fourth lens When the radius of curvature of the image side surface is R9, it is preferable to satisfy the following conditional expression (2). 25 0.01<Bf/R9<0.30 (2) M366076 and 'when the focal length of the first lens is set to fl, and the focal length of the entire system is set to f', it is preferable to satisfy the following conditional expression (3) . 〇.8<fl/f<ll (3) Further, when the focal length of the entire system is f and the combined focal length of the lens group composed of the third and fourth lenses is f34, it is preferable. The following conditional expression (4) is satisfied. 1.5<f/f34<1.7 (4) Further, when the focal length of the second lens is f2 and the focal length of the third lens is f3, the following conditional expression (5) is preferably satisfied. Ίο 15 -0.6 <f2/f3<-0.3 (5) Further, when the focal length of the first lens is f1 and the focal length of the second lens is f2, the following conditional expression is preferably satisfied. (6). -1.72 <fl/f2<-l.54 (6) Further, when the focal length of the first lens is set to fl and the focal length of the third lens is set to f3, it is preferable to satisfy the following conditional expression. (7). 6.6<fl/f3<i.〇 (7) Further, it is preferable that a light barrier is provided between the first lens and the second lens. The photographing apparatus of the present invention includes the photographing lens described above. According to the photographic lens of the present creation, from the object side, the convex surface is oriented in turn.

In the lens configuration, the mirror configuration is such that when the focal length of the entire system is f and the radius of curvature of the surface 20 M366076 of the image side of the first lens is R2, the conditional expression (1) is satisfied, so that it is small and inexpensive. A photographic lens with high optical performance. Since the photographic apparatus of the present invention is provided with the photographic lens of the present invention, it can be configured in a small and inexpensive manner, and an image of high image quality can be obtained. [Embodiment] Hereinafter, embodiments of the present creation will be described in detail with reference to the drawings. Fig. 1 is a cross-sectional view showing the configuration of an imaging lens according to an embodiment of the present invention, and corresponds to an imaging lens of Example 1 to be described later. 10 15 The photographic lens 1 is configured by arranging the following lenses in order from the object side along the optical axis z to form a first lens L1 which is a meniscus lens having a convex surface facing the object side and having a positive power (eight 17 1); a second lens L2 which is a double concave through lens L3 having a negative refractive power, # is a meniscus lens having a convex surface facing the image side and having positive power; a fourth lens [4, It is a meniscus lens having a convex surface facing the object side and having a positive power. Moreover, the aperture stop bar st in the figure does not indicate the shape or size but represents the position on the optical axis z. Further, in the case of considering the photographic lens 丨 in Fig. 1 for the photographic apparatus, it is also possible to arrange the imaging position including the photographic lens i.

Shadow = 5. The photographic element 5 is a 7L piece that converts an optical image formed by a photographic lens into a galvanic number, for example, a CCD image sensor or the like. The structure in which the oyster is used for the photographic mounting side is preferably the fourth lens L4 and the image plane 2; the second glass, the low-pass filter or the infrared cut-off light-passing sheet. For example, the lens 1 is used for in-vehicle photography and is used for t-photographing: Early shooting, infrared plugging for visual aid between instruments 20 M366076 '5

10 15 20 When the camera (dark vision power y) is used, a filter that blocks the ultraviolet light to the blue light may be inserted between the fourth lens L4 and the image plane. In addition, it is also possible. Instead of arranging a low-pass filter or a plurality of filters for cutting off a specific band between the fourth lens L4 and the image plane, the various filters are disposed between the lenses. Alternatively, a coating layer having the same effect as that of the various filters may be applied to the lens surface of any of the lenses of the photographic lens 1. The photographic lens 1 preferably satisfies any one or all of the following conditional expressions. When the focal length of the entire system is f and the radius of curvature sS of the image side surface of the first lens L1 is R2, the following conditional expression is satisfied (丨p here, if it exceeds (upper stone) conditional expression (1) The upper limit, the distortion (distorted) aberration becomes insufficiently corrected, and if it is lower than the lower limit of the next §, the coma aberration becomes larger. 0.00&lt;f/R2&lt;0.13 ......(1) In addition, it is more preferable to satisfy the conditional expression (1_1}. 0.00&lt;f/R2&lt;0.1 (i_i) by adopting such a structure, using a four-piece structure without using an expensive aspherical lens 'When all of the first to fourth lenses are formed by a spherical lens, sufficient optical performance can be exhibited. Therefore, it is possible to realize a small and inexpensive photographic lens having high optical performance. Moreover, in the photographic lens 1, When the air-converted distance from the surface apex of the image side of the fourth lens L4 to the image forming surface is Bf and the curvature half of the image side surface of the fourth lens L4 is set to the ruler 9, the conditional expression (2) is preferably satisfied. Here, if the field of conditional expression (2) is exceeded, the light beam imaged on the surface of the photographic element 5 is reflected on the photographic surface and returned to The nine-sided (imaging surface of the fourth lens )) 'the light beam reflected again on the surface of the 到达 surface reaches the photographic surface, but the diffusion of the light beam 25 M366076 (the outline) is not too large, and becomes a harmful weight if it is lower than the lower limit, then the 彗 image The difference is large. The heart is 趁南. Moreover, 〇.〇l&lt;Bf/R9&lt;〇.3〇...(2) additionally 'more preferably satisfies the conditional formula (2-1). 0.02&lt;Bf/R9&lt;0.25 (2-1) Moreover, the 隹 of the first lens u is set to f睥, and the 岫, & ° is again f 1 , the focal plane aberration of the entire system If the correction is insufficient, the skill is insufficient. If it is lower than the lower limit, the ball ίο 〇.8&lt;fl/f&lt;li ... (3) Further, the conditional expression (3-1) is more preferably satisfied. .8&lt;fl/f&lt;i.〇...(3-1) The focal length of the lens system set to f, the third focal length and the fourth 15 lens 4 When f34, it is preferable to satisfy the following conditional expression (4). Here, if the (four) material ^ &lt; the upper limit of the conditional expression (4), the curvature of the image plane becomes larger, and if it is lower than the lower limit, the 彗 image The difference becomes large. 1.5&lt;f/f34&lt;1.7 (4) In addition, the conditional expression (4_1} is more preferably satisfied. 1.5&lt;f/f34 &lt;1.65 (4-1) 20 Further, when 'the focal length of the second lens L2 is f2 and the focal length of the third lens is f3', the following conditional expression (5) is preferably satisfied. When the upper limit of the conditional expression (5) is exceeded, the spherical aberration is insufficiently corrected, and if it is lower than the lower limit, the curvature of the image is increased. - 〇.6 &lt;f2/f3&lt;-0.3 (5) Further, the conditional expression 1 is more preferably satisfied. 25 M366076 -0.6&lt;f2/f3&lt;&gt; 0.4 (5·1) Further, the pitch of the first lens L1, the distance of fl, and the first erroneous T2 are set to When f2, it is preferable to satisfy the following #逍 mirror L21, , , ^ , P , and the conditional expression (6). Here, if the upper limit of the formula (6) is exceeded, the coma aberration becomes large, and the correction of '5 10 15 is insufficient. If the right is lower than the lower limit, the distortion aberration becomes -1.72 &lt;fl/f2&lt;-l.54 (6) In addition, the conditional expression (6_υ. -1.72&lt;fl/f2&lt ;-l.55 ......(6.1} and 'the first lens's 隹凡.ni, ,,, and 5 are fl, and the focal length of the third lens is f3%, preferably satisfied. In the case of the conditional expression (7), when the upper limit of the conditional expression (7) is exceeded, the curvature of the image becomes larger and the distortion is insufficiently corrected, and if it is lower than the lower limit, the spherical aberration becomes Insufficient correction. 0.6&lt;fl/f3&lt;l.〇.•...(7) In addition, conditional expression (71) is more preferably satisfied. 0.65&lt;fl/f3&lt;〇.95 ......(7-1 Further, when the aperture stop is thinner than the first through (four), the outer diameter of the fourth lens L4 becomes larger, and the maximum straight &amp; When the second lens U is closer to the second lens U, the outer diameter of the first lens u becomes larger, and it is not preferable for the purpose of monitoring the camera or the like to have a small diameter of the lens to be seen from the object side. 'The incident angle of the off-axis light to the image plane becomes larger due to sensing The reason is that the incident angle is limited, so that the selected amplitude (web) is reduced, so it is not preferable. Thus, the aperture stop St is preferably disposed between the first lens...the two lenses L2. Le 20 M366076 The photographic lens 1 preferably has a distortion of ±10% or less when the ideal image height is ftan0. By controlling the distortion to ±1%, an image with less distortion can be obtained. ±5% or less, and it is possible to suppress the distortion of the image in a stepwise manner. Further, the 'first lens L1 is the most transparent side of the object side, so for example, 10 is used in a strict environment such as a car camera. It is preferable to use a material which is stronger than the surface cracking due to wind and rain and the temperature change caused by direct sunlight, and is stronger than chemicals such as greases and detergents, that is, water resistance, weather resistance, acid resistance, and chemical resistance. Further, as the material of the first lens L1, a strong and non-fragile material is preferably used, and specifically, glass or a transparent ceramic is preferably used. The ceramic has a hairiness compared with the general glass. High and heat resistant The photographic lens 1 is suitable for use in a vehicle-mounted camera, for example, in a wide temperature range in the car from the atmosphere of the cold zone to the summer of the tropics. Therefore, all lens materials are preferably broken. In particular, it is used in a wide temperature range of -4 OC to 1250 C. It is also preferable to use a lens to make a lens. All the lenses are preferably a broken lens. The brother (four) is a spherical lens, but the optical performance is lower than the cost. In the photographic lens 1, the light beam outside the effective aperture (effective path) between the first lens U and the second lens L2 becomes a ghost of the stray aperture as a ghost. Since the light beam passing through the side of the surface 2 of the off-axis light has a fear of becoming stray light, it is preferable to provide a light shielding mechanism between the outer surface and the second lens L2 to block the optical light mechanism. For example, The image side of the first lens L1 has an effective diameter of 20 M366076 partially applied with an opaque paint or an opaque plate. Alternatively, an opaque plate material may be provided as a light shielding mechanism on the optical path of the light beam that becomes stray light. The light-shielding mechanism for this purpose can be disposed not only between the first lens L1 and the second lens L2 but also between the other lenses as needed. Further, a cover-shaped (7-K) light-shielding mechanism for preventing stray light may be disposed in front of the object side of the first lens L1. [Embodiment] Next, a specific numerical embodiment of the photographic lens 本 of the present invention will be described. 10 <Embodiment 1> Fig. 1 is a view showing a lens configuration of an imaging lens of Embodiment 1, and Table 1 shows lens data and various data. In the lens data of the surface, the surface number indicates the surface number of the first solid surface (fourth, second, and third) that increases the surface of the object side as the second surface. Moreover, an aperture stop Bar St is additionally included on the surface data of the watch. Ri of Table 1 represents the radius of curvature of the i-th (i = 1, 2, 3, ...) face, and the age Di represents the second (i = 1, 2, 3, ...) face and the i+ The face on the optical axis z of one face is separated. Further, Nej indicates that the optical factor on the object side is taken as the i-th, and the refractive index of the 20th line of the optical factor 20 _ (1, 2, 3, ...) increases toward the image side, ^ Dj represents the Abbe number of the jth optical factor to the d line. In Table 1, the unit of curvature radius and surface spacing is mm, and the curvature half is positive when it is convex toward the object side, and the radius of curvature is negative when it is convex toward the image side. M366076 In the various data of Table 1, f is the focal length of the entire system, Bf is the back focus of the air conversion, and L is the distance from the object side surface of the first lens L1 to the optical axis Z of the image plane of the entire system ( The back focus section is air conversion). The units in the various data of Table 1 are all mm. In addition, the meaning of the symbol in Table 1 is the same as that of the embodiment described later. [Table 1] Example 1 Lens data plane RD Ne vd 1 5.5844 1.8000 1.83945 42.5 2 154.7046 0.0500 3 〇〇1.1367 4 -6.2207 0.5000 1.81643 22.8 5 7.7342 0.5954 6 -21.6602 1.6000 1.83945 42.5 7 -4.9648 0.0992 8 7.9298 1.9860 1.83945 42.5 9 31.9611 Various data

f 7.151 Bf 3.813 L 11.580 f/R2 0.046 Bf/R9 0.119 fl/f 0.960 f/f34 1.603 f2/f3 -0.565 fl/f2 -1.652 fl/f3 0.934 <Example 2> 12 10 M366076 The photograph of Example 2 The lens structure of the lens is shown in Fig. 2, and the lens data and various data are shown in Table 2. [Table 2] Example 2 '5 lens data

RD Ne vd 1 5.6808 1.8000 1.83945 42.5 2 131.3548 0.0500 3 〇〇1.2040 4 -7.1150 0.5000 1.81643 22.8 5 7.1039 0.5953 6 -8.5834 1.5000 1.83945 42.5 7 -4.6945 0.0993 8 8.5841 1.4000 1.83945 42.5 9 171.9898 Various data f 8.229 Bf 5.166 L 12.314 f/R2 0.063 Bf/R9 0.030 fl/f 0.854 f/f34 1.608 f2/f3 -0.408 fl/f2 -1.639 fl/f3 0.670 <Example 3> The lens structure of the photographic lens of Example 3 is shown in Fig. 3 The lens number 10 and various data are shown in Table 3. [Table 3] Example 3 13 M366076 Lens data plane RD Ne V d 1 5.4099 1.8000 1.83945 42.5 2 767.3782 0.0200 3 0.9107 4 -6.9301 0.5000 1.81643 22.8 5 6.7759 0.5953 6 -9.2362 1.5000 1.83945 42.5 7 -4.4980 0.0992 8 7.9743 1.4000 1.83945 42.5 9 30.3650 Various data f 7.866 Bf 4.999 L 11.824 f/R2 0.010 Bf/R9 0.165 fl/f 0.824 f/f34 1.548 f2/f3 -0.452 fl/f2 -1.570 fl/f3 0.710

<Example 4> 5 The lens structure of the photographing lens of Example 4 is shown in Fig. 4, and the lens data and various data are shown in Table 4. [Table 4] Example 4 Lens data plane RD Ne vd 1 5.7015 1.8000 1.83945 42.5 2 146.9140 0.0200 3 〇〇1.2163 4 -6.0331 0.5000 1.81643 22.8 14 M366076 5 7.9595 0.5953 6 -12.0526 1.5000 1.83945 42.5 7 -4.5306 0.0992 8 7.9632 1.4001 1.83945 42.5 9 33.6195 Various data f 7.631 Bf 4.667 L 11.798 f/R2 0.052 Bf/R9 0.139 fl/f 0.921 f/f34 1.638 f2/f3 -0.522 fl/f2 -1.698 fl/f3 0.886

<Example 5> The lens structure of the image pickup lens of Example 5 is shown in Fig. 5, and the lens number data and various data are shown in Table 5. [Table 5] Example 5

Lens data plane RD Ne d 1 5.3240 1.2000 1.83945 42.5 2 78.8518 0.0200 3 〇〇1.1962 4 -6.1953 0.5001 1.81643 22.8 5 7.2623 0.5954 6 -11.2092 1.3000 1.83945 42.5 7 -4.2865 0.0992 8 7.6296 1.2403 1.83945 42.5 9 22.8510 Various data M366076 f 7.553 Bf 4.987 L 11.139 f/R2 0.096 Bf/R9 0.218 fl/f 0.894 f/f34 1.613 f2/f3 -0.529 fl/f2 -1.676 fl/f3 0.887 The spherical surface of the photographic lens of the embodiment 5 is shown in Figs. 6 to 10, respectively. Aberration, astigmatism (non-point difference), distortion (Yin 〇 々乂 々乂) (distortion aberration), aberration chromatic aberration diagram. The upper part of each figure shows the longitudinal aberration (vertical aberration), and the lower part shows the lateral aberration (horizontal difference). Moreover, the lateral aberration of the lower portion indicates the Rong aberration (] π difference). In each aberration diagram, the aberration of the e-line (546 〇 7 nm) is used as the reference wavelength, but in the spherical aberration diagram and the magnification chromatic aberration diagram, the g-line (wavelength 435.83 nm) and the C-line (wavelength) are also shown. Aberration of 656·27·). In the distorted graph, 10 uses the focal length f of the entire lens of the lens, the incident angle θ of the beam toward the lens (variable processing, 0 $ ω ), and sets the ideal image height to ftan 0 to indicate the offset relative to this. Fn 〇 of the vertical axis of the spherical aberration diagram is an F value, and ω of the vertical axis of the other aberration diagrams represents a half angle of view. As is apparent from Fig. 6 to Fig. 1 'Examples 1 to 5 are bright optical systems having an F value of 2.5, and since the aberrations are well corrected, they can be suitably used for shooting. The above-described photographic lens 1 and the photographic lenses of the first to fifth embodiments have a four-piece structure 'but have good optical performance' and can be downsized and cost reduced by 16 M366076, so that they can be suitably used for photographing. A car camera for images such as front, side, and rear of a car. (4) shows a case where the imaging lens and the imaging device of the present embodiment are mounted on the automobile 1G0. In the figure, the automobile (10) is provided with an exterior camera (8) for shooting a dead angle range of the side of the passenger's seat side, an outdoor camera (10) for photographing a dead angle range of the rear side of the automobile (10), and an in-vehicle rearview mirror (/). 1_ν卜) The back side of the car camera (8) for shooting the same field of view of the driver's seat. The outdoor camera (8), the outdoor camera 102, and the in-vehicle camera 103 are imaging devices, and include an imaging lens i according to an embodiment of the present invention, and an imaging device 5 that converts an optical image formed by imaging into an electrical signal. As described above, the photographic lens 实施 of the embodiment of the present invention has a small and excellent optical performance, and therefore the exterior cameras 1〇1, 1〇2 and the in-vehicle camera 1〇3 can be configured in a small size, and the photographic element 5 can be photographed. Good surface imaging = like ° and 'Because the photographic lens I does not use an aspherical lens, it can also be used as a light-filled sin. Therefore, it can be produced at low cost, so that the camera outside the camera ► 101, 102 and the in-vehicle camera 1〇3 Can be produced cheaply. The present invention has been described by way of example and example, but the present invention is not limited to the above-described embodiments and examples, and various modifications can be made. In Example 0, the values of the radius of curvature, the interplanar spacing, and the refractive index of each lens component are not limited to those shown in the above numerical examples, and other values may be employed. Moreover, 'in the embodiment of the photographing apparatus, the sub-picture for the on-vehicle camera is not described. 'But this creation is not limited to this use, for example, 'it can also be applied to a portable terminal. Camera or surveillance camera, etc. [Brief Description of the Drawings] Fig. 1 is a cross-sectional view showing a lens configuration of a photographing lens of Example 1 of the present invention. Fig. 2 is a cross-sectional view showing a lens configuration of a photographing lens of Example 2 of the present invention. Fig. 3A is a cross-sectional view showing the lens configuration of the photographic lens of the third embodiment of the present invention. Fig. 4 is a cross-sectional view showing the lens configuration of the imaging lens of Example 4 of the present invention. Fig. 5 is a cross-sectional view showing the lens configuration of the photographic lens of the fifth embodiment. Fig. 6 is a diagram showing aberrations of the photographic lens of the present embodiment. Fig. 7 is a view showing aberrations of the imaging lens of Example 2 of the present invention. 15 ® 8 is an aberration diagram of the photographic lens of Example 3 of the present creation. Fig. 9 is a view showing aberrations of the imaging lens of Example 4 of the present invention. Fig. 1A is a diagram showing aberrations of the imaging lens of Example 5 of the present invention. (4) Distribution of the vehicle-making device of the present embodiment [main element symbol description 1 photographic lens L2 second lens St aperture light-blocking element L3 third lens Z-light vehicle by L1 first lens L4 fourth lens 100 car 20 .M366076 101, 102 exterior camera 1 〇 3 in-vehicle camera R1 radius of curvature of the first face R2 radius of curvature of the second face R4 radius of curvature of the fourth face R5 radius of curvature of the fifth face R6 sixth face Curvature radius R7 Radius of curvature of the seventh face R8 Radius of curvature of the eighth face R9 Radius of curvature of the ninth face D1 Surface of the first face and the optical axis of the second face D2 Second face The surface spacing D3 on the optical axis z of the third surface and the surface spacing D4 on the optical axis z of the third surface and the fourth surface. The surface spacing D5 on the optical axis z of the fourth surface and the fifth surface. The surface spacing D6 on the optical axis Z of the fifth and sixth faces and the surface spacing D7 on the optical axis Z of the sixth and seventh faces are on the optical axis Z of the seventh and eighth faces. The face spacing of the 8th face of the face spacing D8 and the face axis 19 of the optical axis Z of the 9th face

Claims (1)

M366076 VI. Patent Application Range: 1. A photographic lens comprising, in order from the object side, a first lens 'which is a meniscus lens with a convex surface facing the object side and having positive power; 5 a second lens, which is a biconcave lens; a third lens 'which is a meniscus lens having a convex surface facing the image side and having positive power; a fourth lens which is a meniscus lens having a convex surface facing the object side and having a positive refractive power, 10 when the focal length of the entire system is f, and the radius of curvature of the image side surface of the first lens is R2 , the following conditional formula (丨) is satisfied: 0.00&lt;f/R2&lt;0.13 (1). 2. The photographic lens according to claim 1, wherein the air-converted distance from the vertex of the image side of the fourth lens to the image plane is B f, 15 on the image side of the fourth lens. When the radius of curvature is set to R9, the following conditional expression (2) is satisfied: 0.01 &lt; Bf / R9 &lt; 0.30 ...... (2). 3. In the photographic lens described in the first or second aspect of the patent application, when the focal length of the first lens is set to ^ and the focal length of the entire system is set to f, the following conditional expression (3) is satisfied: 〇 .8&lt;fl/f&lt;l. 1 ......(3). 4. If the photographic lens described in the second or second aspect of the patent application is applied, the focal length of one system is set to f, and the focal length 6 of the lens group composed of the third and fourth lenses is f3 4 . When the following conditional expression (4) is satisfied: 20 . M366076 1.5 &lt; f / f34 &lt; 1.7 (4). 5. The photographic lens according to claim 1 or 2, wherein the focal length of the second lens is f2 and the focal length of the third lens is 〇, the following conditional expression (5) is satisfied: -0.6&lt;f2/f3&lt;-0.3 ......(5). 6. The photographic lens according to claim 1 or 2, wherein the focal length of the first lens is f1 and the focal length of the second lens is 〇, the following conditional expression (6) is satisfied:参.(6) 10 15 # 7. 7. If the photographic lens described in claim 4 or item 2 is set, the focal length of the first lens is set to 〇, and the focal length of the third lens is set to 〇. The conditional expression (7): 0.6 &lt; fl/f3 &lt; 1.0 (7) 〇 8. A light rest is provided between the second item of the patent application or the second lens and the second lens. ^Lens 9. A photographic apparatus which is photographic lens as described by the heart. 〃 4 interest range item 1 or 2 21