To obtain an excellent image by a wide angle imaging lens which is constituted to be compact and inexpensive.
The wide angle imaging lens includes, in order from an object side, a first lens L1 that is a negative meniscus turning its convex surface to the object side, a second lens L2 that is a negative lens turning its concave surface to an image side and having at least one aspherical surface, a third lens L3 that is a positive lens turning its convex surface to the object side and having at least one aspherical surface, and a fourth lens L4 turning its convex surface to the image side and having at least one aspherical surface. When a focal length of the first lens L1 is defined as f1 and a focal length of the second lens L2 is defined as f2, they satisfy a conditional expression (1): 7.0
JP2007279548A | ||||
JP2007025499A | ||||
JP2006259704A |
Go Sakuma