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1. 发明申请

WO9935517A3 COMPACT ZOOM LENS WITH DIFFRACTIVE SURFACE AND ANTI-ALIASING FEATURE 审中-公开
标题翻译：具有差异表面和抗反射特征的紧凑型变焦镜头
公开(公告)号：WO9935517A3
公开(公告)日：1999-12-09
申请号：PCT/US9827098
申请日：1998-12-18
申请人： INTEL CORP , HASENAUER DAVID M , BROOME GARY G , KOCH DONALD G
发明人： HASENAUER DAVID M , BROOME GARY G , KOCH DONALD G
IPC分类号： G02B15/163 , G02B15/14 , G02B27/44
CPC分类号： G02B15/163
摘要： A compact zoom lens system (100) having four injection-molded singlet lens elements (102, 104, 106 and 108) is described. In one embodiment, the compact zoom lens system includes a lens carrier (132) and first and second lens elements (102 and 104) coupled to the lens carrier. One surface of the first or second lens elements having a diffractive optical surface disposed thereon to correct chromatic aberrations of light passing therethrough. The lens carrier moves the first and second lens elements axially to change a focal length of the lens system. Third and fourth lens elements are fixed on either side of the first and second lens elements. The lens carrier includes an aperture stop (142) placed proximate to the diffractive optical surface to correct chromatic aberrations over an entire range of focal lengths. The first lens element is made out of flint-like material while the other lens elements are made out of crown-like material. Moreover, the zoom lens system includes an anti-aliasing surface on one of the lens elements to control aliasing effects. A plurality of light suppression elements are provided to suppress stray light paths from scattering across a detector array of the zoom lens system.
摘要翻译：描述了具有四个注射成型单透镜元件（102,104,106和108）的紧凑型变焦透镜系统（100）。在一个实施例中，紧凑型变焦透镜系统包括透镜托架（132）和耦合到透镜托架的第一和第二透镜元件（102和104）。第一或第二透镜元件的一个表面具有设置在其上的衍射光学表面，以校正穿过其中的光的色差。透镜载体轴向移动第一和第二透镜元件以改变透镜系统的焦距。第三和第四透镜元件固定在第一和第二透镜元件的两侧。透镜载体包括靠近衍射光学表面设置的孔径光阑（142），以在整个焦距范围内校正色像差。第一透镜元件由火石状材料制成，而其它透镜元件由冠状材料制成。此外，变焦透镜系统包括在一个透镜元件上的抗锯齿表面以控制混叠效应。提供多个光抑制元件以抑制杂散光路径散射在变焦透镜系统的检测器阵列上。

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