Optical radar device for vehicles

Abstract

Abstract Translated from Japanese (57)【要約】 【課題】 この発明は、自車と先行車両との距離の長短 に拘わらず、先行車両を確実に検出できる車両用光レー ダ装置を得る。 【解決手段】 光路変換装置４０は送光レンズ１２とミ ラー１３ａとの間のレーザビームの光路に隣接して設け られ、光路変換部の位置を該レーザビームの光路から外 れた第１の位置と該レーザビームの光路を遮る第２の位 置とに選択的に切り替える。そして、光路変換部の位置 を切り替えることにより、送光ミラー１４で反射される 送光レーザビームの上下方向の所定のビーム角を有する 照射野が、光路変換部が第１の位置に保持されている時 の第１の照射野と、光路変換部が第２の位置に保持され ている時の第１の照射野から上下方向の一側にシフトし た第２の照射野とに選択的に切り替えられる。 (57) Abstract: The present invention provides a vehicular optical radar device that can reliably detect a preceding vehicle regardless of the length of the distance between the host vehicle and the preceding vehicle. SOLUTION: An optical path changing device 40 is provided adjacent to an optical path of a laser beam between a light transmitting lens 12 and a mirror 13a, and a position of an optical path changing unit is set to a first position deviated from the optical path of the laser beam. And selectively switching to a second position that blocks the optical path of the laser beam. By switching the position of the optical path conversion unit, the irradiation field having a predetermined vertical beam angle of the transmitted laser beam reflected by the light transmitting mirror 14 is held at the first position by the optical path conversion unit. And selectively switching between the first irradiation field when the optical path conversion unit is held at the second position and the second irradiation field shifted to one side in the up-down direction from the first irradiation field when the optical path conversion unit is held at the second position. Can be

Inventors

• 👤 Koji Katayama
• 👤 紘二 片山

Bibliographic Details