Abstract: Conventional wide angle lenses each do not have such features that an optical length is short, a back focus is long to the extent possible, a good image is obtained, and sufficient brightness is provided. In other words, it is difficult to perform sufficient correction of chromatic aberration and achieve sufficient downsizing. Provided is a wide angle lens provided with a first lens L1, a second lens L2, a third lens L3, an aperture stop S, and a fourth lens L4. The wide angle lens is configured by arranging the first lens L1, the second lens L2, the third lens L3, the aperture stop S, and the fourth lens L4 in this order from the side of an object toward the side of an image. The first lens L1 is a meniscus lens having a negative refractive power, the convex surface of which faces the side of the object. The second lens L2 is a meniscus lens having a positive refractive power, the convex surface of which faces the side of the image.

Abstract: An imaging lens of which optical performance does not deteriorate even in a high temperature environment, various aberrations are well corrected, optical length is short, and back focus is sufficiently secured, comprising an aperture stop S and a junction type compound lens 14 having a positive refractive power, wherein the aperture stop and the junction type compound lens are arranged in this sequence from an object side to an image side. The junction type compound lens comprises a first lens L1, a second lens L2 and a third lens L3 arranged in this sequence from the object side to the image side. The first lens and the third lens are formed of a curable resin material, and the second lens is formed of an optical glass. The first lens and the second lens are directly bonded, and the second lens and the third lens are directly bonded. The object side face of the first lens and the image side face of the third lens are aspherical.

Abstract: The present invention is an imaging lens of which optical performance does not deteriorate even in a high temperature environment, various aberrations are well corrected, optical length is short, and back focus is sufficiently secured, the imaging lens comprising a first junction type compound lens, an aperture stop S, a second junction type compound lens, and a third junction type compound lens, which are arranged in this sequence from an object side to an image side. The first junction type compound lens comprises a first lens L1, a second lens L2 and a third lens L3 arranged in this sequence from the object side to the image side, the second junction type compound lens comprises a fourth lens L4, a fifth lens L5 and a sixth lens L6 arranged in this sequence from the object side to the image side, and the third junction type compound lens comprises a seventh lens L7, an eighth lens L8 and a ninth lens L9 arranged in this sequence from the object side to the image side.

Abstract: An imaging lens of which various aberrations are corrected well, optical length is short, and back focus is sufficiently secured, is provided. The imaging lens is formed of a first lens L1, an aperture stop S, a second lens L2 and a third lens L3, arranged in this sequence from the object side to the image side. The first lens L1 is a meniscus lens having a positive refractive power, of which convex surface faces the object side, the second lens L2 is a meniscus lens having a positive or negative refractive power, of which convex surface faces the image side, and the third lens L3 is a meniscus lens having a negative refractive power, of which convex surface faces the object side. The Abbe number ? of the second lens L2 is a value in a 50.0 to 60.0 range.

Abstract: An imaging lens of which various aberrations are corrected well, optical length is short, and back focus is sufficiently secured, is provided. The imaging lens is formed of a first lens L1, an aperture stop S, a second lens L2 and a third lens L3, arranged in this sequence from the object side to the image side. The first lens L1 is a meniscus lens having a positive refractive power, of which convex surface faces the object side, the second lens L2 is a meniscus lens having a positive or negative refractive power, of which convex surface faces the image side, and the third lens L3 is a meniscus lens having a negative refractive power, of which convex surface faces the object side. The Abbe number ? of the second lens L2 is a value in a 50.0 to 60.0 range.

Abstract: The present invention is an imaging lens of which optical performance does not deteriorate even in a high temperature environment, various aberrations are well corrected, optical length is short, and back focus is sufficiently secured, the imaging lens comprising a first junction type compound lens, an aperture stop S, a second junction type compound lens, and a third junction type compound lens, which are arranged in this sequence from an object side to an image side. The first junction type compound lens comprises a first lens L1, a second lens L2 and a third lens L3 arranged in this sequence from the object side to the image side, the second junction type compound lens comprises a fourth lens L4, a fifth lens L5 and a sixth lens L6 arranged in this sequence from the object side to the image side, and the third junction type compound lens comprises a seventh lens L7, an eighth lens L8 and a ninth lens L9 arranged in this sequence from the object side to the image side.

Abstract: An imaging lens of which optical performance does not deteriorate even in a high temperature environment, various aberrations are well corrected, optical length is short, and back focus is sufficiently secured. This imaging lens comprises a first junction type compound lens 14, an aperture diaphragm S, a second junction type compound lens 16, and a third junction type compound lens 18, wherein the first junction type compound lens, the aperture diaphragm, the second junction type compound lens, and the third junction type compound lens are arranged in this sequence from an object side to an image side.

Abstract: A pickup lens is provided with various aberrations corrected satisfactorily, with a short optical length, and with a sufficient back focus secured. The configuration comprises an aperture diaphragm S1, first lens L1, second lens L2, and third lens L3, and is configured by arranging, in order from the object side to the image side, the aperture diaphragm, first lens, second lens, and third lens. The first lens is a lens having positive refractive power, in a meniscus shape with the convex surface on the object side. The second lens is a lens having negative refractive power, in a meniscus shape with the convex surface on the image side. The third lens is a lens having negative refractive power, in a meniscus shape with the convex surface on the object side. Both of the surfaces of the first lens are aspherical, both of the surfaces of the second lens are aspherical, and both of the surfaces of the third lens are aspherical.

Abstract: In a thin image capture lens feeding device, wear of constituent members does not readily occur, even when an operation of switching between a normal image capture mode and a macro image capture mode is repeated. By rotating a lens retention housing 80 relative to a holder 70, the lens retention housing is caused to move back and forth, and an image capture lens incorporated into the lens retention housing can be fed out. This back-and-forth motion is performed by means of a cam mechanism. The holder, in sliding coupling with the lens retention housing, holds the lens retention housing. Between a pressing cover 10 and the holder are enclosed a spacer 20, micro-coil spring set 130, and lens retention housing; by coupling the pressing cover and the holder by means of claw portions, an integrated image capture lens feeding device is assembled.

Abstract: In an imaging lens of the present invention, various types of aberration are corrected favorably, the optical length is short, and a sufficient back focus is secured. The imaging lens comprises an aperture diaphragm S1, a first lens L1, a second lens L2, and a third lens L3, and is constituted such that the aperture diaphragm, first lens, second lens, and third lens are arranged in succession from the object side toward the image side. The first lens has a positive refractive power and convex surfaces facing the object side and the image side. The second lens has a negative refractive power, a meniscus shape, and a convex surface facing the image side. The third lens L3 has a positive refractive power and convex surfaces facing the object side and the image side. Both surfaces of the first lens, both surfaces of the second lens, and both surfaces of the third lens L3 are aspherical.

Abstract: In an imaging lens of the present invention, aberration is satisfactorily corrected, the optical length is short, and sufficient back focus is secured. The imaging lens of the present invention is constituted by arranging a first lens L1, an aperture diaphragm S1, a second lens L2, and a third lens L3 in succession from the object side to the image side.

Abstract: The present invention is an imaging lens in which various aberrations are favorably corrected, the optical length is short, and a sufficient back focus is secured. The imaging lens is constituted by arranging a first lens L1, an aperture diaphragm S1, a second lens L2, and a third lens L3 in succession from the object side to the image side. The first lens L1 is a lens having a positive refractive power and a meniscus shape in which the convex surface faces the object side, the second lens L2 is a lens having a negative refractive power and a meniscus shape in which the convex surface faces the image side, and the third lens L3 is a lens in which the convex surface faces the object side.

Abstract: The present invention relates to an imaging lens with an F-number in the range 2.0 to 4.0, configured from only two lenses, with a short lens optical length, and with sufficiently high image contrast so that sharp images are obtained. The imaging lens is configured by positioning, in order from an object side to an image side, an aperture diaphragm, a first lens, a second diaphragm, and a second lens, satisfying the following conditions. The first lens and second lens are both meniscus-shaped with convex surface facing the object side, and have positive refractive power. 0.3<f1/f2<1.0 ??(1) 0.4<bf/f<0.5 ??(2) 1.0<d/f<1.3 ??(3) 0.12<D2/f<0.30 ??(4) 2.0<Fno<4.

Abstract: The present invention is an imaging lens in which various aberrations are satisfactorily corrected, the optical length is short, and a sufficient back focus is secured. The imaging lens is constituted by arranging a first lens L1, an aperture diaphragm S1, a second lens L2, and a third lens L3 in succession from the object side to the image side, and thus satisfies the following conditions. 0.40<r1/r2<0.65??(1) 0.08<D2/f<0.1??(2) 0.2<D3/f<0.3??(3) 1.0<d/f<1.5??(4) 0.4<bf/f<0.

Abstract: In an imaging lens of the present invention, aberration is satisfactorily corrected, the optical length is short, and a sufficient back focus is secured. The imaging lens of the present invention is constituted by arranging a first lens L1, an aperture diaphragm S1, a second lens L2, and a third lens L3 in succession from the object side to the image side, and thus satisfies the following conditions. 0.24<r1/r2<0.34??(1) 0.08<D2/f<0.1??(2) 0.24<D3/f<0.29??(3) 1.0<d/f<1.

Abstract: A lens for image pickup is provided in which various aberrations are corrected satisfactorily, the optical length is at maximum approximately 6 mm, and moreover a sufficient back focus is secured. This lens for image pickup comprises a first lens, an aperture diaphragm, and a second lens, positioned in this order from the object side toward the image side. The first lens is a resin lens with a meniscus shape, with the convex surface facing the object side, and having positive refractive power. The second lens is a resin lens with a meniscus shape, with the convex surface facing the image side, and having positive refractive power.