Mitsubishi Electric Corporation

Mitsubishi Electric Cornoration

Yosuke Takagawa

Masahiro Kawai

Shumpei Kameyama

A distance measurement apparatus includes: a laser light source configured to emit emitted light to be applied to an object to be measured; a laser light source control circuit configured to control the laser light source; a MEMS mirror configured to two-dimensionally scan the object with the emitted light; a reflecting member configured to cover a part of a scan region, and reflect the emitted light; and a light detector configured to receive reflected light from the object to be measured and reflected light from the reflecting member, and output a received light signal. The laser light source control circuit sets, to a threshold value, an amount of the emitted light obtained when output of the light detector is saturated, and controls an amount of the emitted light such that the amount of the emitted light is less than the threshold value.

Distance measurement apparatus

To provide a laser distance measuring apparatus that can set the irradiation range of the laser beam to the front ground surface appropriately regardless of the inclination of the front ground surface. A laser distance measuring apparatus controls the scanning mechanism to performs two-dimensional scan which scan laser beam in an irradiation angle range of the right and left direction to the traveling direction of own vehicle and scans laser beam in an irradiation angle range of the up and down direction with respect to the traveling direction of own vehicle; detects a relative inclination information of the up and down direction of a ground surface in front of own vehicle with respect to a ground surface where own vehicle is located; and moves the irradiation angle range of the up and down direction to up side or down side according to the relative inclination information.

Growing community of inventors

Tokyo, Japan

Yosuke Takagawa