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公开(公告)号：US06791629B2
公开(公告)日：2004-09-14
申请号：US09811732
申请日：2001-03-19
Applicant: Jacob Moskovich , Michael B. Larson , Richard J. Wessling
Inventor： Jacob Moskovich , Michael B. Larson , Richard J. Wessling
IPC: H04N931
Abstract: Projection lens systems for use with cathode ray tube (CRT) projection televisions are provided which have positive first lens units (U1) and negative second lens units (U2) where the negative second lens units are customized in terms of at least one optical property for at least two of the colors of light produced by the CRTs with which the units are used. The at least one optical property is not spectral transmission, although the second lens units can also be customized for spectral transmission. As illustrated in FIGS. 1B-1F and FIGS. 8B-8F, such customization of a non-transmissive property provides an effective and cost effective approach for improving the color performance of CRT projection lens systems. Constructions for the positive first lens unit which improve image contrast and reduce manufacturing costs are also provided.
Abstract translation: 提供了用于阴极射线管（CRT）投影电视机的投影透镜系统，其具有正的第一透镜单元（U1）和负的第二透镜单元（U2），其中负的第二透镜单元根据至少一个光学性质被定制 由使用该单元的CRT产生的至少两种颜色的光。 至少一个光学特性不是光谱传输，尽管第二透镜单元也可以被定制用于光谱传输。 如图1和2所示。 1B-1F， 如图8B-8F所示，非透射性质的定制为CRT投影透镜系统的彩色性能提供了一种有效和经济有效的方法。 还提供了改善图像对比度并降低制造成本的正面第一透镜单元的结构。
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公开(公告)号：US07019793B2
公开(公告)日：2006-03-28
申请号：US10910186
申请日：2004-08-03
Applicant: Jacob Moskovich , Michael B. Larson , Richard J. Wessling
Inventor： Jacob Moskovich , Michael B. Larson , Richard J. Wessling
Abstract: Projection lens systems for use with cathode ray tube (CRT) projection televisions are provided which have positive first lens units (U1) and negative second lens units (U2) where the negative second lens units are customized in terms of at least one optical property for at least two of the colors of light produced by the CRTs with which the units are used. The at least one optical property is not spectral transmission, although the second lens units can also be customized for spectral transmission. As illustrated in FIGS. 1B–1F and FIGS. 8B–8F, such customization of a non-transmissive property provides an effective and cost effective approach for improving the color performance of CRT projection lens systems. Constructions for the positive first lens unit which improve image contrast and reduce manufacturing costs are also provided.
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公开(公告)号：US5055922A
公开(公告)日：1991-10-08
申请号：US490050
申请日：1990-03-07
Applicant: Richard J. Wessling
Inventor： Richard J. Wessling
Abstract: Disclosed is an improved color projection TV lens system which provides reduced chromatic aberration and improved chromaticity. These improvements are achieved by incorporating a light absorbing material into at least one lens in the system wherein the lens has a substantially uniform thickness.
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公开(公告)号：US07133084B2
公开(公告)日：2006-11-07
申请号：US11315725
申请日：2005-12-22
Applicant: Jacob Moskovich , Michael B. Larson , Richard J. Wessling
Inventor： Jacob Moskovich , Michael B. Larson , Richard J. Wessling
Abstract: Projection lens systems for use with cathode ray tube (CRT) projection televisions are provided which have positive first lens units (U1) and negative second lens units (U2) where the negative second lens units are customized in terms of at least one optical property for at least two of the colors of light produced by the CRTs with which the units are used. The at least one optical property is not spectral transmission, although the second lens units can also be customized for spectral transmission. As illustrated in FIGS. 1B–1F and FIGS. 8B–8F, such customization of a non-transmissive property provides an effective and cost effective approach for improving the color performance of CRT projection lens systems. Constructions for the positive first lens unit which improve image contrast and reduce manufacturing costs are also provided.
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