会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 67. 发明申请
    • ZOOM LENS SYSTEM HAVING IMAGING AND NON-IMAGING RANGES
    • 具有或不具有图像投影的变焦镜头系统
    • WO99018467A1
    • 1999-04-15
    • PCT/US1998/019982
    • 1998-09-24
    • G02B15/167F21S8/00F21S10/00G02B9/36G02B15/17F21P5/00
    • G02B15/173F21W2131/406G02B9/36
    • A project zoom les system is used in imaging and non-imaging modes for entertainment and architectural illumination, providing 8:1 zoom ratio in an imaging mode and 20:1 zoom ratio in a non-imaging mode. When coupled with a variable aperture iris, beam size control is obtained with 120:1 ratio. The lens system comprises four lens groups: a first group having a positive refractive power, a second group having a negative refractive power, a third group having a negative refractive power, and a fourth group having a positive refractive power. In the imaging mode, the third group is adjusted axially to vary magnification while the second group is adjusted axially to focus on the object. In the non-imaging mode, the second and third groups are brought into close proximity with each other and adjusted axially as a unit to vary magnification. The fourth group remains fixed and the first group can be adjusted axially to focus the image at different throw lengths.
    • 根据本发明,以图像投影模式和非图像投影模式的变焦透镜投影系统被用于照明表示或体系结构的目的,该系统使得有可能 在图像投影模式下获得8:1的放大率,在非图像投影模式下放大率为20:1。 当我们将这个缩放与可变孔径光圈耦合时,我们可以获得比例约为120/1的光束尺寸。 该目标系统包括四个透镜组:具有正折射率的第一组,具有负折射率的第二组,具有负折射率的第三组和具有正折射率的第四组。 在图像投影模式下,第三组沿轴向设置以改变放大倍率,而第二组沿轴向设置以聚焦在物体上。 在非图像投影模式中,第二组和第三组彼此靠近且轴向调整以作为变化放大的单位。 第四组保持固定,第一组可以轴向调整,以根据不同的投影长度聚焦在图像上。