Patent ID: 8237796
Filing Date: 2012-08-07
Classification: B60R,H04N

Abstract:
1. A monitor used in an automobile, comprising: an image sensing module secured on the automobile, the image sensing module including a lens module and an image sensor, the image sensor secured on an emitting light path of the lens module; a visual field adjustor, the visual field adjustor including a prism and two reflectors, the prism made from transparent materials and movably installed in an incident light path of the lens module; the prism including a trapeziform bottom, a first side, a second side, a third side and a fourth side; the first side being parallel to the second side, the area of the first side being larger than the area of the second side, the third side and the fourth side both intersecting with the first side and the second side, and the third side and the fourth side both forming an angle of 60 degrees to the first side; the two reflectors respectively installed on the third side and the fourth side; and a display electronically connected with the image sensor and mounted to the automobile; wherein when the automobile reverses, the image sensing module cooperates with the visual field adjustor to capture optical image signals, and the display uses the optical image signals to create an image and displays the image; wherein when the prism moves to a first place where the third side is located in an incident light path of the lens module, optical image signals in a first range are reflected into the visual field of the lens module by the reflector on the third side and are received by the lens module; when the prism moves to a second place where the second side is located in the incident light path of the lens module, optical image signals in a second range travel through the first side and the second side and are received by the lens module; and when the prism moves to a third place where the fourth side is located in the incident light path of the lens module, optical image signals in a third range are reflected into the visual field of the lens module by the reflector on the fourth side and received by the lens module.