FIELD-OF-VIEW MONITORING DEVICE FOR MOVING BODY

摘要

PROBLEM TO BE SOLVED: To realize miniaturization and to adjust or intercept entering light quantity in accordance with the light quantity of a sunbeam. SOLUTION: This field-of-view monitoring device is to monitor the field of view of a moving body. The device is equipped with a video acquiring means 30 fetching the video of the field of view of the moving body, and an electrochromic device 40 adjusting the light quantity of the sunbeam entering the means 30 by changing applied voltage in accordance with the light quantity of the sunbeam when the sunbeam enters the optical system of the means 30.