Optical lens assembly

Abstract

An optical lens assembly is adapted to a projection lens. The optical lens assembly is used to generate multiple light beams from multiple lights emitted by a multiple light source generating unit. A direction toward the multiple light source generating unit is a light input side, and an opposite side is a light output side. The optical lens assembly includes a first to a sixth lens elements in sequence along an optical axis from the light output side to the light input side, and each of the first to the sixth lens elements includes a light output surface facing the light output side and a light input surface facing the light input side. The first lens element has negative refractive power, the fourth lens element has negative refractive power, a periphery region of​the light output surface of the fifth lens element is a concave surface, and a periphery region of ​​the light input surface of the sixth lens element is a convex surface. A lens elements of the optical lens assembly only have the above six lens elements, and the projection lens and the optical lens assembly respectively satisfy a conditional expression as follows: EDmax / EDmin≦2.100；V1+V2+V3≦140.