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    • 43. 发明授权
    • Lens apparatus for projection
    • 投影镜头设备
    • US06798584B2
    • 2004-09-28
    • US10327904
    • 2002-12-26
    • Susumu MatsumotoKumajiro SekineYasuhiro SekineYasaburou Ootaka
    • Susumu MatsumotoKumajiro SekineYasuhiro SekineYasaburou Ootaka
    • G02B900
    • G02B13/00
    • A lens apparatus for projection includes a plurality of lenses on an optical axis. A shading plate 11 for covering the peripheral portion of the lens to block off light entering the peripheral portion is provided as a single member on the optical axis with the lenses to omit an inking process. In addition, the shading plate 11 is integrally provided with a contrast compensating plate 13 for compensating a projected image, so that it is not required to provide any portions for supporting the contrast compensating plate 13. Moreover, a shading wall 23 for blocking off light leaking out of the peripheral portion of the lens is provided on the peripheral portion of the shading plate 11. Thus, it is possible to provide a lens apparatus for projection, which has a simple structure and which can be easily assembled to reduce the producing costs.
    • 用于投影的透镜装置包括在光轴上的多个透镜。 在透镜上设置用于覆盖透镜的周边部分以阻挡进入周边部分的光的遮光板11作为光轴上的单个部件,以省略墨迹处理。 此外,遮光板11一体地设置有用于补偿投影图像的对比度补偿板13,从而不需要提供用于支撑对比度补偿板13的任何部分。此外,遮光壁23用于遮挡光 在遮光板11的周边部分上设置有从透镜的周边部分漏出的透镜装置。因此,可以提供一种结构简单且易于组装以便降低生产成本的投影透镜装置 。
    • 44. 发明授权
    • Lens apparatus for projection
    • 投影镜头设备
    • US06552859B1
    • 2003-04-22
    • US09690808
    • 2000-10-18
    • Susumu MatsumotoKumajiro SekineYasuhiro SekineYasaburou Ootaka
    • Susumu MatsumotoKumajiro SekineYasuhiro SekineYasaburou Ootaka
    • G02B900
    • G02B13/00
    • A lens apparatus for projection includes a plurality of lenses on an optical axis. A shading plate 11 for covering the peripheral portion of the lens to block off light entering the peripheral portion is provided as a single member on the optical axis with the lenses to omit an inking process. In addition, the shading plate 11 is integrally provided with a contrast compensating plate 13 for compensating a projected image, so that it is not required to provide any portions for supporting the contrast compensating plate 13. Moreover, a shading wall 23 for blocking off light leaking out of the peripheral portion of the lens is provided on the peripheral portion of the shading plate 11. Thus, it is possible to provide a lens apparatus for projection, which has a simple structure and which can be easily assembled to reduce the producing costs.
    • 用于投影的透镜装置包括在光轴上的多个透镜。 在透镜上设置用于覆盖透镜的周边部分以阻挡进入周边部分的光的遮光板11作为光轴上的单个部件,以省略墨迹处理。 此外,遮光板11一体地设置有用于补偿投影图像的对比度补偿板13,从而不需要提供用于支撑对比度补偿板13的任何部分。此外,遮光壁23用于遮挡光 在遮光板11的周边部分上设置有从透镜的周边部分漏出的透镜装置。因此,可以提供一种结构简单且易于组装以便降低生产成本的投影透镜装置 。