A novel dual field of view optical system with dual image was presented, the design methods of this system, the operational principle of beamsplitter and the optical wedge are discussed respectively.

An attractive golden rust in color, this "dual" dog is popular in both the field and the show ring due to his power and drive while hunting and his trainability in the home.

This article introduces a new design in an ARM_based embedded system. The system is applied to the dual channel portable device in the field of vibration analyzing.