Patent ID: 8738320

Claim:
A light condensing lens comprising a plurality of lenses disposed side by side in a splitting direction of a view angle to condense incident light over a range corresponding to respective split portions of the view angle, the view angle being split in a direction orthogonal to an optical axis of the incident light, wherein: at least one of the plurality of lenses is disposed to be inclined in the splitting direction at a predetermined angle with respect to the optical axis; and when the predetermined angle at which the lens is inclined in the splitting direction is defined as θ L , the following conditional expressions (1) and (2) are met: if n is an odd number, θ L =( N −1)×(θ/ n ), and (1) if n is an even number, θ L =( N −½)×(θ/ n ), (2) where N is the number of the lens counted with reference to the optical axis, θ is the view angle in the splitting direction, and n is the number by which the view angle is split.