Electronic viewfinder

摘要

An electronic viewfinder is configured to magnify an image and provide adjustable diopter for different observers. The electronic viewfinder includes an aperture stop, a lens group totally with positive power, and a display. The components in the electronic viewfinder are arranged sequentially between the observer and the image. The lens group is utilized to enlarge the image, and the lens group includes a first lens with positive power and a second lens with negative power. The display is for showing the image. A first planar lens is disposed between the aperture stop and the lens group. A second planar lens may be disposed between the lens group and the display. A polarizer may be arranged between the second planar lens and the lens group.

主权项

1. An electronic viewfinder having a first planar lens and a display positioned between an observing side and an image side, and the electronic viewfinder comprises:
a lens group with positive power from the observing side to the image side comprising at least a first lens with positive power and a second lens with negative power; and a polarizer, wherein the polarizer is disposed between the display and the lens group; wherein the electronic viewfinder follows the condition of 250/EFL≧15, wherein EFL is a focal length of the lens group.