| 摘要 |
A VEHICLE-MOUNTED CAMERA DEVICE (100, 101) THAT IS MOUNTED ON A VEHICLE AND CAPTURES A SURROUNDING IMAGE FROM WHICH LIGHTS ARE COLLECTED BY A LENS (1A), IN WHICH THE LENS IS SET SO AS TO HAVE THE SURFACE HAVING A CONTACT ANGLE LESS THAN OR EQUAL TO 100º, PREFERABLY LESS THAN OR EQUAL TO 60º SO THAT WATER ATTACHED ON THE SURFACE IS MADE INTO A FORM OF A FILM. FOR THIS REASON, THE SURFACE OF THE LENS HAS HIGH HYDROPHILICITY, AND IF WATER DROPLETS ARE ATTACHED WHEN IT IS RAINING, THE WATER DROPLETS EXTEND OVER THE SURFACE OF THE LENS TO FORM A WATER FILM. THUS, IF MUD OR OTHER ATTACHED MATTER IS ATTACHED ON THE SURFACE OF THE LENS, IT IS POSSIBLE TO REMOVE THE ATTACHED MATTER WITHOUT DELAY, AND IT IS POSSIBLE TO ALWAYS KEEP THE SURFACE OF THE LENS IN A CLEAN STATE. |
