OPTICAL ENGINE, MANUFACTURING METHOD OF THE SAME AND PROJECTOR

• Main Authors: OSHIMA EIJI, SUZUKI AKIO, TAKAHASHI SHUICHI, OSAKA SATOSHI, ITO MITSUHIRO, TOMOTO KAZUTAKA
• Format: Patent
• Language: English; Japanese
• Published: 02.11.2015
• Subjects: ACCESSORIES THEREFOR; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES; APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM; CINEMATOGRAPHY; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; ELECTROGRAPHY; HOLOGRAPHY; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHOTOGRAPHY; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION

PROBLEM TO BE SOLVED: To provide an ultra-compact projector.SOLUTION: An optical engine 100 usable in a projector comprises: a housing; first, second and third laser diodes 101 to 103 that are juxtaposed directing a direction of an inside of the housing in one side and emit three-color laser light; a prism mirror 104 that causes a two-laser light from the first and second laser diodes 101 and 102 to be respectively reflected one time and to be further reflected with the two-laser light aligned with an optical axis of the third laser diode 103; an inclination mirror 106 that reflects a laser flux incident from the prism mirror 104 toward a bottom surface of the housing; a bottom surface mirror 107 that is provided in the bottom surface of the housing for reflecting reflection light from the inclination mirror 106 upwardly; and a drive mirror 109 that reflects the reflection light from the bottom surface mirror 107 as changing an angle in a perpendicular direction and horizontal direction. 【課題】超小型のプロジェクタを提供する。【解決手段】プロジェクタに利用できる光学エンジン１００であって、筐体と、筐体の一辺において、前記筐体の内部方向に向けて並べて配置され、３色のレーザ光を発射する第１、第２および第３レーザダイオード１０１〜１０３と、第１および第２レーザダイオード１０１、１０２からの２つのレーザ光を、それぞれ１度反射させ、前記第３レーザダイオード１０３の光軸に合わせてさらに反射させるプリズムミラー１０４と、プリズムミラー１０４から入射したレーザ光束を、前記筐体の底面に向けて反射する傾斜ミラー１０６と、傾斜ミラー１０６からの反射光を上方に反射するため、前記筐体の底面に設けられた底面ミラー１０７と、底面ミラー１０７からの反射光を、垂直方向および水平方向に角度を変えつつ反射する駆動ミラー１０９と、を備えた。【選択図】図１Ａ