| 摘要 |
PROBLEM TO BE SOLVED: To provide an eyepiece lens that gives a clear vision in an electronic viewfinder using a liquid crystal display element or the like.SOLUTION: The eyepiece lens is an electronic viewfinder using a liquid crystal display element or the like as display means, and is composed of, successively from the display element side, a first lens having a positive refractive power, a second lens having a negative refractive power, and a biconvex third lens, satisfying conditional expressions (1) 0.45<f1/f<1.3, (2) -0.52<f2/f<-0.3, and (3) 0.45<f3/f<0.75. In the expressions, f1 represents a focal length of the first lens, f2 represents a focal length of the second lens, f3 represents a focal length of the third lens, and f represents a focal length of the entire eyepiece lens system.SELECTED DRAWING: Figure 1 |
