IMAGING LENS

摘要

PROBLEM TO BE SOLVED: To provide an imaging lens which has wide viewing angle, in which aberration is excellently corrected in the wide wavelength range from a visible range to a near-infrared range and which is suitable for a camera for observation which is mounted on a satellite for instance and performs multi-band observation in the wide wavelength range. SOLUTION: The imaging lens comprises a first group G1, an aperture diaphragm St, a second group G2 and a third group G3 in order from an object side. The second group G2 includes a cemented lens comprising a positive meniscus lens L21 having a concave surface on the object side and a negative meniscus lens L22 having a concave surface on the object side. The third group G3 includes positive lenses L31 and L32 having an Abbe number of 80 or more and satisfies a conditional expression (1):¾f/f1¾<0.5, a conditional expression (2):¾f/f2¾<0.8, a conditional expression (3):0.8