公开(公告)号：US5808804A

公开(公告)日：1998-09-15

申请号：US715028

申请日：1996-09-17

Applicant: Jacob Moskovich

Inventor： Jacob Moskovich

IPC: G02B13/18 ,  G02B9/62 ,  G02B13/16 ,  G02B13/24 ,  G09F9/00 ,  H04N5/74 ,  H04N9/31 ,  G02B3/00

CPC classification number: G02B9/62 ,  G02B13/16 ,  H04N5/74

Abstract: Six-component projection lens systems for use in projection televisions are provided. From the screen side, the systems preferably have a + - +++ - configuration. The use of a second lens element having a negative power results in improved sagittal modulation transfer functions (MTFs) at large field locations. The negative second lens element can be made of a low dispersion material, such as styrene, so as to provide partial correction of axial color.

Abstract translation: 提供了用于投影电视的六组分投影透镜系统。 从屏幕侧，系统优选具有+ - +++配置。 使用具有负功率的第二透镜元件导致在大场位置处改善矢状调制传递函数（MTF）。 负的第二透镜元件可以由诸如苯乙烯的低分散材料制成，以便提供轴向颜色的部分校正。

公开(公告)号：US5677797A

公开(公告)日：1997-10-14

申请号：US192328

申请日：1994-02-04

Applicant: Ellis I. Betensky

Inventor： Ellis I. Betensky

IPC: G02B13/18 ,  G02B27/00 ,  G02B27/01 ,  G02B3/02 ,  G02B9/00

CPC classification number: G02B13/18 ,  G02B27/0025 ,  G02B27/0172 ,  G02B2027/011

Abstract: A method for producing a lens system is provided in which an exact field curvature (EFC) value is determined for at least one principal ray, the EFC value being given by: EFC=-.SIGMA.(n'-n)c/nn' the summation being taken over the surfaces of the system, and for each of the surfaces, n is the index of refraction on the object side of the surface, n' is the index of refraction on the image side of the surface, and c is the curvature of the surface at the intersection of the surface with the principal ray, c being positive if the center of curvature is on the image side of the surface.

Abstract translation: 提供一种用于制造透镜系统的方法，其中为至少一个主光线确定精确的场曲率（EFC）值，EFC值由下式给出：EFC = -SEGMA（n'-n）c / nn'the 并且对于每个表面，n是表面的物体侧的折射率，n'是表面的像侧上的折射率，c是 表面与主光线的交点处的曲面曲率，如果曲率中心在表面的像侧，则为正。

公开(公告)号：US4963007A

公开(公告)日：1990-10-16

申请号：US403139

申请日：1989-09-05

Applicant: Jacob Moskovich

Inventor： Jacob Moskovich

IPC: G02B9/12 ,  G02B13/18

CPC classification number: G02B9/12 ,  G02B13/18

Abstract: A projection lens in which a lens unit which may comprise one or two elements is closely coupled at the object end of the lens to a cathode ray tube. At the image end is a lens unit of overall weak optical power which comprises from the image end a first positive element followed by a closely spaced negative element of substantially higher dispersion. Intermediate the object side lens unit and the image side lens unit is a lens unit of substantial optical power supplying substantially all of the positive optical power of the lens. Closely spaced to this power lens unit on the object side is a negative lens element of high dispersion. This negative lens element may be considered to be part of the power lens unit. The negative lens elements have weak optical power at the axis of the lens but are of generally increasing negative optical power from the optical axis to the clear apertures of the negative lens elements to contribute to proper color correction of the lens, particularly axial chromatic aberration adjacent the full aperture. The intermediate positive power lens unit may comprise one or two positive elements depending upon the application and the manner in which the power is to be distributed to minimize aberrations. A lens embodying the invention is capable of maintaining a high image quality over a large range of magnifications by moving the first and second lens units form the image end in predetermined differential relationship.

Abstract translation: 其中可以包括一个或两个元件的透镜单元在透镜的目标端处紧密耦合到阴极射线管的投影透镜。 在图像端是整体弱光焦度的透镜单元，其包括从图像端第一正元素后跟紧密间隔的基本上更高色散的负元件。 中间物镜侧透镜单元和像侧透镜单元是实质上提供基本上所有透镜的正光焦度的光功率的透镜单元。 与物体侧的该功率透镜单元紧密隔开的是高分散性的负透镜元件。 该负透镜元件可以被认为是功率透镜单元的一部分。 负透镜元件在透镜的轴线处具有弱的光焦度，但是从光轴到负透镜元件的透明孔径通常增加负的光学功率，以有助于镜片的适当的颜色校正，特别是相邻的轴向色差 全光圈。 中间正功率透镜单元可以包括一个或两个正元件，这取决于应用和功率的分布方式以最小化像差。 体现本发明的透镜能够通过以预定的差分关系移动第一和第二透镜单元形成图像端，从而在大范围的放大率下保持高的图像质量。

公开(公告)号：US4526442A

公开(公告)日：1985-07-02

申请号：US280785

申请日：1981-07-06

Applicant: Ellis I. Betensky

Inventor： Ellis I. Betensky

IPC: G02B9/16 ,  G02B13/16 ,  G02B13/18 ,  G02B9/12 ,  G02B27/18

CPC classification number: G02B9/16 ,  G02B13/16 ,  G02B13/18

Abstract: A compact projection lens for a cathode ray tube comprises from the image end, a first group of positive power which corrects aperture dependent aberrations, a second positive group and a third group which corrects for field curvature and distortion. A mirror is inserted between the first and second groups to fold the optical axis.

Abstract translation: 用于阴极射线管的紧凑型投影透镜包括从图像端，校正孔径依赖像差的第一组正功率，校正场曲率和失真的第二正组和第三组。 在第一组和第二组之间插入反射镜以折叠光轴。

公开(公告)号：US4163604A

公开(公告)日：1979-08-07

申请号：US864018

申请日：1977-12-23

Applicant: Ellis I. Betensky

Inventor： Ellis I. Betensky

IPC: G02B13/16 ,  G02B13/18 ,  G02B9/14

CPC classification number: G02B13/18 ,  G02B13/16

Abstract: A three element lens particularly adapted to project an image appearing on a cathode ray tube.

Abstract translation: 特别适用于投影出现在阴极射线管上的图像的三元件透镜。

公开(公告)号：US6097551A

公开(公告)日：2000-08-01

申请号：US308798

申请日：1999-05-25

Applicant: Melvyn H. Kreitzer

Inventor： Melvyn H. Kreitzer

IPC: G02B9/04 ,  G02B9/10 ,  G02B13/04 ,  G02B13/18 ,  G02B27/00

CPC classification number: G02B27/0037 ,  G02B13/04 ,  G02B27/4211 ,  G02B9/04 ,  G02B9/10

Abstract: A lens system for an electronic system has two lenses. The first lens (S1/S2) has a negative power, and the second lens (S4/S5 or S5/S6) has a positive power and is spaced from the first lens (S1/S2) by a distance of at least a quarter of the focal length of the lens system. In one embodiment (FIG. 3), the second lens (S4/S5) is a refractive-diffractive hybrid lens; in which case both the first and the second lenses (S1/S2 and S4/S5) can be composed of acrylic, and can have only spherical and conic surfaces. In other embodiments (FIG. 1, 2, 4), the first lens (S1/S2) has a higher dispersion than the than the second lens (S4/S5 or S5/S6); for example, the first lens (S1/S2) is composed of styrene, and the second lens (S4/S5 or S5/S6) is composed of acrylic. In this case, the first lens (S1/S2) can have a spherical surface and a general aspherical surface, and the second lens (S5/S6) can have conic surfaces (FIG. 1, 2); or both of the first and second lenses (S1/S2 and S4/S5) can have a spherical surface, and a conic surface (FIG. 4).

Abstract translation: PCT No.PCT / US97 / 20144 Sec。 371日期1999年5月25日 102（e）日期1999年5月25日PCT提交1997年11月12日PCT公布。 第WO98 / 23988号公报 日期1998年6月4日电子系统的镜头系统有两个镜头。 第一透镜（S1 / S2）具有负电力，第二透镜（S4 / S5或S5 / S6）具有正功率并且与第一透镜（S1 / S2）间隔至少四分之一的距离 的镜头系统的焦距。 在一个实施例（图3）中，第二透镜（S4 / S5）是折射衍射混合透镜; 在这种情况下，第一和第二透镜（S1 / S2和S4 / S5）都可以由丙烯酸制成，并且可以仅具有球面和圆锥面。 在其他实施例中（图1，图2，图4），第一透镜（S1 / S2）的色散比第二透镜高（S4 / S5或S5 / S6）。 例如，第一透镜（S1 / S2）由苯乙烯构成，第二透镜（S4 / S5或S5 / S6）由丙烯酸构成。 在这种情况下，第一透镜（S1 / S2）可以具有球面和一般的非球面，第二透镜（S5 / S6）可以具有圆锥面（图1,2）。 或者第一和第二透镜（S1 / S2和S4 / S5）都可以具有球形表面和圆锥面（图4）。

公开(公告)号：US5900989A

公开(公告)日：1999-05-04

申请号：US908118

申请日：1997-08-11

Applicant: Melvyn H. Kreitzer

Inventor： Melvyn H. Kreitzer

IPC: G02B13/18 ,  G02B13/16 ,  G02B15/14 ,  G02B15/16 ,  G02B27/18 ,  H04N5/74

CPC classification number: G02B15/16 ,  G02B13/16 ,  G02B15/161 ,  H04N5/74 ,  H04N5/7441

Abstract: Projection lenses for use with pixelized panels, e.g., LCD panels, are provided. The lenses have a large focus range, e.g., a focus range of greater than 0.05 and in many cases greater than 0.1, and a limited (mini) zoom range, e.g., a zoom range of less than 15% (.+-.7.5% from the center of the range). By limiting the zoom range, complex lens structures involving large numbers of lens elements are avoided. In particular, the lenses employ at most one additional lens element and in many cases no additional lens elements compared to non-zooming lenses having a similar focus range.

Abstract translation: 提供了用于像素化面板（例如LCD面板）的投影透镜。 镜头具有大的对焦范围，例如，大于0.05的焦距范围，并且在许多情况下大于0.1的焦距范围，以及有限的（迷你）变焦范围，例如小于15％的变焦范围（+/- 7.5％ 从范围的中心）。 通过限制变焦范围，避免了涉及大量透镜元件的复杂透镜结构。 特别地，透镜最多使用一个附加透镜元件，并且在许多情况下，与具有相似焦距范围的非变焦透镜相比，没有额外的透镜元件。

公开(公告)号：US5900987A

公开(公告)日：1999-05-04

申请号：US22700

申请日：1998-02-12

Applicant: Melvyn H. Kreitzer

Inventor： Melvyn H. Kreitzer

IPC: G02B15/177 ,  G02B15/14

CPC classification number: G02B15/161 ,  G02B15/177

Abstract: A zoom projection lens for use with LCD or DMD panels is provided. The lens has two units U1 and U2, which are moved relative to one another for zooming. The first unit has a negative power and includes at least three lens elements L1, L2, and L3, where L1 is composed of plastic and has two aspherical surfaces, L2 has a positive power and is composed of a flint material, and L3 has a negative power and is composed of a crown material. The second unit has two subunits U2.sub.S1 and U2.sub.S2, each of which has a positive power, with the power of U2.sub.S2 being greater than the power of U2.sub.S1. At its minimum effective focal length f.sub.min, the projection lens has a back focal length to focal length ratio greater than one, the ratio being achieved by arranging the first unit, the second unit, and the subunits of the second unit so that:D.sub.12 /f.sub.min >1.0,D.sub.S1S2 /f.sub.min >1.0,andD.sub.12 /D.sub.S1S2 >1.0,where D.sub.12 is the axial distance between the first and second lens units evaluated at f.sub.min and D.sub.S1S2 is the axial distance between the first and second subunits of the second lens unit.

Abstract translation: 提供与LCD或DMD面板一起使用的变焦投影透镜。 透镜具有两个单元U1和U2，它们相对于彼此移动以进行变焦。 第一单元具有负功率，并且包括至少三个透镜元件L1，L2和L3，其中L1由塑料构成并且具有两个非球面，L2具有正的功率并且由燧石材料构成，并且L3具有 负功率由冠材料组成。 第二单元具有两个子单元U2S1和U2S2，每个子单元具有正功率，U2S2的功率大于U2S1的功率。 在其最小有效焦距fmin处，投影透镜的后焦距与焦距比大于1，该比率通过布置第二单元的第一单元，第二单元和子单元来实现，使得：D12 / fmin> 1.0，DS1S2 / fmin> 1.0和D12 / DS1S2> 1.0，其中D12是在fmin处评估的第一和第二透镜单元之间的轴向距离，DS1S2是第二透镜单元的第一和第二子单元之间的轴向距离 。

公开(公告)号：US4707084A

公开(公告)日：1987-11-17

申请号：US652062

申请日：1984-09-19

Applicant: Ellis I. Betensky

Inventor： Ellis I. Betensky

IPC: G02B13/16 ,  G02B13/18 ,  G02B9/34

CPC classification number: G02B9/34 ,  G02B13/16 ,  G02B13/18

Abstract: A projection lens for a cathode ray tube display which comprises from the image end a first lens unit of relatively weak optical power serving primarily to correct aperture dependent aberrations, a second lens unit of strong positive power permitting decreased equivalent focal length and resulting wide field angle, and a third lens unit having a strongly concave image side surface and serving to correct the Petzval curvature of the surfaces of the other lens units. The second lens unit comprises two elements of overall biconvex shape separated by an air gap. The facing surfaces of the two elements of the second lens unit are of relatively weak optical power and at least one of the surfaces of the two elements of the second lens unit is aspheric to contribute to the corrections provided by said second lens unit.

Abstract translation: 一种用于阴极射线管显示器的投影透镜，其包括从图像端起主要用于校正孔径相关像差的相对较弱光学功率的第一透镜单元，具有强正功率的第二透镜单元允许减小等效焦距并导致宽场角 以及第三透镜单元，其具有强凹面的图像侧表面，并且用于校正其他透镜单元的表面的彼得兹瓦尔曲率。 第二透镜单元包括由气隙隔开的整体双凸形状的两个元件。 第二透镜单元的两个元件的相对表面具有相对较弱的光学功率，并且第二透镜单元的两个元件的至少一个表面是非球面的，以有助于由所述第二透镜单元提供的校正。

公开(公告)号：US5969876A

公开(公告)日：1999-10-19

申请号：US246346

申请日：1999-02-08

Applicant: Melvyn H. Kreitzer ,  Jacob Moskovich

Inventor： Melvyn H. Kreitzer ,  Jacob Moskovich

IPC: G02B9/12 ,  G02B13/16 ,  G02B13/18 ,  G02B13/24 ,  H04N5/74 ,  H04N9/31 ,  G02B3/00 ,  G02B15/14

CPC classification number: G02B13/04 ,  G02B13/18 ,  G02B9/12

Abstract: A projection lens for use with LCD or DMD panels is provided. The lens has three lens units, the first unit having a negative power and at least one plastic lens element having two aspheric surfaces, a second lens unit having a negative power or a weak positive power and at least one color correcting doublet, and a third lens unit having a positive power and an aspheric surface either on a glass element or on a weak plastic element. The projection lens has a back focal length to focal length ratio of at least 3.0, the ratio being achieved by arranging the first, second, and third lens units so that:D.sub.12 /f.sub.0 >1.0,D.sub.23 /f.sub.0 >0.7,and1.5

Abstract translation: 提供了一种用于LCD或DMD面板的投影镜头。 透镜具有三个透镜单元，第一单元具有负光焦度和至少一个具有两个非球面的塑料透镜元件，具有负光焦度或弱正光焦度的第二透镜单元和至少一个色彩校正双曲面，以及第三透镜单元 在玻璃元件或弱塑料元件上具有正功率和非球面的透镜单元。 投影透镜的后焦距与焦距比至少为3.0，该比率通过布置第一，第二和第三透镜单元来实现，使得：D12 / f0> 1.0，D23 / f0> 0.7和1.5 <（D12 + D23 + BFL）/ BFL <4.0其中：f0是第一，第二和第三透镜单元的组合的有效焦距; BFL是第一，第二和第三透镜单元的组合的后焦距; D12是第一和第二透镜单元之间的距离; 并且D23是第二和第三透镜单元之间的距离。