摘要:
An image pickup lens, comprises sequentially from an object side: an aperture stop, a first lens being a positive meniscus lens which has a convex surface at the object side and a concave surface at an image side opposite to the object side, and a second lens having a concave surface at the object side and an image side surface whose radius of curvature on an paraxial region is infinite or a negative value, wherein the first lens is the second lens and the image side surface of the second lens includes an aspheric surface to make a positive power strong toward a lens peripheral region, and wherein the image pickup lens is made to satisfy the following conditional formulas. 1.55
摘要:
An image pickup lens, comprises sequentially from an object side: an aperture stop, a first lens being a positive meniscus lens which has a convex surface at the object side and a concave surface at an image side opposite to the object side, and a second lens having a concave surface at the object side and an image side surface whose radius of curvature on an paraxial region is infinite or a negative value, wherein the first lens is the second lens and the image side surface of the second lens includes an aspheric surface to make a positive power strong toward a lens peripheral region, and wherein the image pickup lens is made to satisfy the following conditional formulas: 1.55
摘要:
An image pickup lens, comprises sequentially from an object side: an aperture stop, a first lens being a positive meniscus lens which has a convex surface at the object side and a concave surface at an image side opposite to the object side, and a second lens having a concave surface at the object side and an image side surface whose radius of curvature on an paraxial region is infinite or a negative value, wherein the first lens is the second lens and the image side surface of the second lens includes an aspheric surface to make a positive power strong toward a lens peripheral region, and wherein the image pickup lens is made to satisfy the following conditional formulas. 1.55
摘要:
An image pickup lens, comprises sequentially from an object side: an aperture stop, a first lens being a positive meniscus lens which has a convex surface at the object side and a concave surface at an image side opposite to the object side, and a second lens having a concave surface at the object side and an image side surface whose radius of curvature on an paraxial region is infinite or a negative value, wherein the first lens is the second lens and the image side surface of the second lens includes an aspheric surface to make a positive power strong toward a lens peripheral region, and wherein the image pickup lens is made to satisfy the following conditional formulas. 1.55
摘要:
An image pickup lens includes a first lens block with a positive power and a second lens block with a positive or negative power. The first lens block includes a first lens substrate, and lens portions 1a and 1b arranged on opposing surfaces of the first lens substrate. The lens portions 1a and 1b are different from the first lens substrate in at least one of a refractive index and an Abbe number. The second lens block includes a second lens substrate, and lens portions 2a and 2b arranged on opposing surfaces of the second lens substrate. The lens portions 2a and 2b are different from the second lens substrate in at least one of a refractive index and an Abbe number. The image pickup lens satisfies a condition relating to focal lengths of the lens portions 1a and 2b.
摘要:
An image capturing lens is disclosed, which is compact and capable of capturing an image at a wide angle though realizing low cost performance by enabling mass productions of wafer-scale lenses, and an image capturing device is disclosed, which uses this image capturing lens. For the purpose of attaining short focusing, a wide angle of view can be ensured by optimally disposing the power of a first lens block and the power of a second lens block so that a value of a conditional formula (1) becomes higher than a lower limit. Hereat, a wider angle can be attained by strengthening the positive power of the second lens block against the first lens block without increasing the overall length. While on the other hand, the value of the conditional formula (1) becomes lower than an upper limit, whereby the power of the second lens block is prevented from being excessively strengthened, the lens units of the second lens block can be configured with a small sag quantity, and moldability can be kept preferable, 0.9
摘要:
An image pickup lens includes: a first lens block with a positive power and a second lens block. The first lens block includes a first lens substrate, a lens portion 1a with a positive power, formed on an object-side surface of the first lens substrate, and a lens portion 1b with a negative power, formed on an image-side surface of the first lens substrate. The object-side surface of the lens portion 1a is a convex surface, and an image-side surface of the lens portion 1b is a concave surface. The second lens block includes a second lens substrate, and a lens portion 2a with a negative power, formed on an object-side surface of the second lens substrate. The object-side surface of the lens portion 2a is a concave surface. The image pickup lens satisfies the predetermined conditional expressions.
摘要:
An image pickup lens includes a first lens block with a positive refractive power, a second lens block with a negative refractive power, and an aperture stop. The first lens block includes a first lens substrate, and lens portions 1a and 1b arranged on the first lens substrate. The lens portions 1a and 1b are different from the first lens substrate in at least one of a refractive index and an Abbe number. The second lens block includes a second lens substrate, and lens portions 2a and 2b arranged on the second lens substrate. The lens portions 2a and 2b are different from the second lens substrate in at least one of a refractive index and an Abbe number. The image pickup lens satisfies predetermined conditions relating to a refractive index of the lens portion 2b, and composite thicknesses of the first lens block and the second lens block.
摘要:
An image pickup lens includes a first lens block with a positive refractive power, a second lens block with a negative refractive power, and an aperture stop. The first lens block includes a first lens substrate, and lens portions 1a and 1b arranged on the first lens substrate. The lens portions 1a and 1b are different from the first lens substrate in at least one of a refractive index and an Abbe number. The second lens block includes a second lens substrate, and lens portions 2a and 2b arranged on the second lens substrate. The lens portions 2a and 2b are different from the second lens substrate in at least one of a refractive index and an Abbe number. The image pickup lens satisfies predetermined conditions relating to a refractive index of the lens portion 2b, and composite thicknesses of the first lens block and the second lens block.
摘要:
Imaging lens comprises, in order from the object side, a first lens block having a convex and concave surfaces oriented toward the object and image side respectively, and having a positive power, and a second lens. An aperture stop can be located on the object side of the first lens block, a peripheral portion of the image side surface of the second lens has a positive power where: 0.62