| 摘要 |
A projector lens system is provided. The projector lens system comprising, in order from a screen side thereof: a first negative lens that is made of resin and is convex on the screen side; a first positive lens that is made of glass and is biconvex; a stop; a cemented lens that has negative refractive power and is composed, in order from the screen side, of a second negative lens that is made of glass and a second positive lens that is made of glass; and a third positive lens that is made of resin, wherein a refractive index n1 of the first negative lens, a refractive index n2 of the first positive lens, a refractive index n32 of the second positive lens, and a refractive index n4 of the third positive lens satisfy the following conditions: 1.45≰n1≰1.60; 1.45≰n4≰1.60; 0.16≰n2−n1≰0.31; 0.16≰n32−n4≰0.31; 0.95≰n1/n4≰1.05; and 0.95≰n2/n32≰1.05. |
