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    • 2. 发明授权
    • Optical element and optical system having the same
    • 光学元件和光学系统具有相同的功能
    • US06890081B2
    • 2005-05-10
    • US10391609
    • 2003-03-20
    • Toshihiro SunagaHiroaki HoshiTakeshi Akiyama
    • Toshihiro SunagaHiroaki HoshiTakeshi Akiyama
    • G02B17/00G02B17/08G02B5/10
    • G02B17/086G02B17/0848
    • An optical element formed from a transparent optical material includes two refraction surfaces, a first reflection surface group having a plurality of internal reflection surfaces arrayed in a predetermined direction, a second reflection surface group opposing the first reflection surface group and having at least one internal reflection surface and two side surfaces opposing each other in parallel to the predetermined direction. Light incident from one of the refraction surfaces is alternately reflected by the internal reflection surfaces of the first reflection surface group and the internal reflection surface of the second reflection surface group and guided to the other refraction surface. The width of at least one of the plurality of internal reflection surfaces of the first reflection surface group and at least one internal reflection surface of the second reflection surface group in a direction in which the two side surfaces oppose each other is smaller than the distance between the two side surfaces in the direction in which the side surfaces oppose each other.
    • 由透明光学材料形成的光学元件包括两个折射面,具有沿预定方向排列的多个内反射面的第一反射面组,与第一反射面组相对的第二反射面组,具有至少一个内反射 表面和与预定方向平行的彼此相对的两个侧表面。 从一个折射面入射的光由第一反射面组的内反射面和第二反射面组的内反射面交替反射,并被引导到另一折射面。 第一反射面组的多个内反射面和第二反射面组的至少一个内反射面的两个侧面相对的方向的宽度小于 所述两个侧面在所述侧面彼此相对的方向上。
    • 9. 发明授权
    • Optical element and optical system having the same
    • 光学元件和光学系统具有相同的功能
    • US06637899B2
    • 2003-10-28
    • US09405130
    • 1999-09-24
    • Toshihiro SunagaHiroaki HoshiTakeshi Akiyama
    • Toshihiro SunagaHiroaki HoshiTakeshi Akiyama
    • G02B510
    • G02B17/086G02B17/0848
    • An optical element formed from a transparent optical material includes two refraction surfaces, a first reflection surface group having a plurality of internal reflection surfaces arrayed in a predetermined direction, a second reflection surface group opposing the first reflection surface group and having at least one internal reflection surface and two side surfaces opposing each other in parallel to the predetermined direction. Light incident from one of the refraction surfaces is alternately reflected by the internal reflection surfaces of the first reflection surface group and the internal reflection surface of the second reflection surface group and guided to the other refraction surface. The width of at least one of the plurality of internal reflection surfaces of the first reflection surface group and at least one internal reflection surface of the second reflection surface group in a direction in which the two side surfaces oppose each other is smaller than the distance between the two side surfaces in the direction in which the side surfaces oppose each other.
    • 由透明光学材料形成的光学元件包括两个折射面,具有沿预定方向排列的多个内部反射面的第一反射面组,与第一反射面组相对的第二反射面组,具有至少一个内反射 表面和与预定方向平行的彼此相对的两个侧表面。 从一个折射面入射的光由第一反射面组的内反射面和第二反射面组的内反射面交替反射,并被引导到另一折射面。 第一反射面组的多个内反射面和第二反射面组的至少一个内反射面的两个侧面相对的方向的宽度小于 所述两个侧面在所述侧面彼此相对的方向上。