Patent ID: 6924948

Claim:
A multifocal lens system for digital cameras comprising: a wide-angle lens which is placed in front of an image sensor having the center of the image sensor on the optic axis of the wide-angle lens so that the wide-angle lens can be focused on the image sensor; a telephoto lens which is placed alongside the wide-angle lens; a parallelogram prism which is made of glass, plastic or the like and is placed and movable from side to side at the rear of said lenses and through which the telephoto lens can be focused on the image sensor when said prism is placed in front of the sensor and at the rear of the wide-angle lens covering the sensing area of the image sensor and shutting the light through the wide-angle lens; and a means of moving the prism from the rear of the wide-angle lens not to let the prism cover the image sensing area of the image sensor and to let the wide-angle lens focus on the image sensor or moving the prism onto the image sensor and to the rear of the wide-angle lens so that the light through the wide-angle lens can be shut off and the telephoto lens can be focused on the image sensor through the prism.