A new type of three-dimensional (3D) imaging laser radar is introduced. It uses streak tube as the receiver, which makes the radar have the peculiarities of high frame rate and wide range angle.

You also check for the valid Angle range when setting the value.

Always before I had attempted the impossible-trying to get the full range of tones, looking for an Angle where the bright scene outside could somehow be compressed into the camera's tonal range.