Patent ID: 7382410

Claim:
A portable telephone comprising: a phototaking optical system; a two-dimensional image pickup element for receiving an object image formed by said phototaking optical system; a two-dimensional display element for displaying said object image in the form of an image to be viewed; and a magnifying optical system for guiding said image to a viewer's eyeball, wherein: said magnifying optical system includes a first reflecting surface for turning back an optical path between said two-dimensional display element and said viewer's eyeball to achieve compactness, said first reflecting surface being formed by a curved surface having an image-magnifying action, and the following conditions are satisfied: f<20 (mm) L<15 (mm), where f is a focal length of the magnifying optical system and L is a diagonal length of the two-dimensional display element, said portable telephone comprises a telephone unit and a unit separate from said telephone unit, said separate unit being connected to said telephone unit via a connector and having said two-dimensional display element and said magnifying optical system disposed therein.