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    COMPACT, LIGHTWEIGHT, ENERGY EFFICIENT, LOW NOISE SHUTTER MECHANISM
    1.
    发明申请
    COMPACT, LIGHTWEIGHT, ENERGY EFFICIENT, LOW NOISE SHUTTER MECHANISM 审中-公开
    紧凑，轻便，节能，低噪音的快门机构

    公开(公告)号：US20120207466A1

    公开(公告)日：2012-08-16

    申请号：US13346772

    申请日：2012-01-10

    申请人： Kevin L. Timpel ,  David A. Richards

    发明人： Kevin L. Timpel ,  David A. Richards

    IPC分类号： G03B9/08

    CPC分类号： G03B9/10

    摘要： A robust, compact, lightweight, low energy, low cost, and low noise mechanical mechanism suitable for military and other demanding applications includes a Geneva drive that transitions a camera shutter or other element between two positions and locks the shutter or other element in place between transitions, thereby isolating the remainder of the mechanism from shutter vibrations and torques. Accordingly, the mechanism controlling the Geneva drive need not be especially robust even for military applications, and can be similar in size, weight, energy consumption, and noise to a conventional shutter mechanism. The driving mechanism can include a rotary actuator or a linear actuator with a rack gear. In various embodiments the driving mechanism includes a piezomotor. In certain embodiments, the starting and ending positions of the mechanism are determined by sensors, and in some embodiments the starting and ending positions are adjustable.

    摘要翻译： 适用于军事和其他苛刻应用的坚固，紧凑，轻便，低能耗，低噪音的机械机构包括一个日内瓦驱动器，它将相机快门或其他元件在两个位置之间转换，并将快门或其他元件锁定在 从而将机构的其余部分与快门振动和转矩隔离。 因此，即使对于军事应用，控制日内瓦驱动的机构也不是特别强大，并且在尺寸，重量，能量消耗和噪声方面与常规的快门机构相似。 驱动机构可以包括旋转致动器或具有齿条的线性致动器。 在各种实施例中，驱动机构包括压电电动机。 在某些实施例中，机构的起始和终止位置由传感器确定，并且在一些实施例中，起始位置和结束位置是可调节的。

    Glass mold material for precision glass molding
    2.
    发明授权
    Glass mold material for precision glass molding 失效
    玻璃模具材料用于精密玻璃成型

    公开(公告)号：US06363747B1

    公开(公告)日：2002-04-02

    申请号：US09570564

    申请日：2000-05-12

    申请人： Michael K. Budinski ,  John C. Pulver ,  Jayson J. Nelson ,  Eugene G. Hill ,  David A. Richards

    发明人： Michael K. Budinski ,  John C. Pulver ,  Jayson J. Nelson ,  Eugene G. Hill ,  David A. Richards

    IPC分类号： C03B1100

    CPC分类号： C03C3/062 ,  C03B11/08 ,  C03B40/02 ,  C03B2215/48 ,  C03B2215/50 ,  C03B2215/72 ,  C03C3/0745 ,  C03C3/12 ,  C03C3/145

    摘要： A method for making working mold tools for use in a compression molding process for molding optical glass elements from high temperature glasses having Tg's in the range of from about 400° C. to about 850° C. An yttria aluminosilicate glass is fabricated by traditional melting and casting processes to thereby make an amorphous base material having a minimum apparent viscosity of 1015 poise at the temperature at which the optical glass elements are to be molded. A mold preform is made from the base material. A first surface figure for the optical element to be molded with the working mold tool is defined. A second surface figure for a master mold tool and a third surface figure for the working mold tool are computed based upon the first surface figure and the coefficients of thermal expansion of the optical element, the master mold tool, and the working mold tool, the temperature at which the working mold tool is molded, and the temperature at which the optical element is to be molded. A master mold tool is then ground and polished to achieve the second surface figure. The working mold tool is then molded from the mold preform using the master mold tool.

    摘要翻译： 制造用于压缩成型工艺的工作模具的方法，用于从Tg为约400℃至约850℃的高温玻璃成型光学玻璃元件。氧化钇铝硅酸盐玻璃通过传统熔化 和铸造工艺，从而在光学玻璃元件将被模制的温度下形成具有1015泊的最小表观粘度的非晶基材。 模具预成型件由基材制成。 定义了用工作模具工具模制的光学元件的第一表面图形。 基于第一表面图形和光学元件，主模具和工作模具的热膨胀系数来计算主模具的第二表面图形和用于工作模具工具的第三表面图形， 加工模具的成型温度以及光学元件的成型温度。 然后将主模具工具研磨和抛光以实现第二表面图形。 然后使用主模具工具从模具预制件模制工作模具。

    Method for fabricating glass preforms for molding optical surfaces in glass elements
    3.
    发明授权
    Method for fabricating glass preforms for molding optical surfaces in glass elements 失效
    制造用于模制玻璃元件中的光学表面的玻璃预制件的方法

    公开(公告)号：US06260387B1

    公开(公告)日：2001-07-17

    申请号：US09087073

    申请日：1998-05-29

    申请人： David A. Richards

    发明人： David A. Richards

    IPC分类号： C03B900

    CPC分类号： C03B23/049 ,  C03B15/14

    摘要： A method for making preforms for use in a glass lens molding process and molding lenses is disclosed. A glass rod is formed preferably by dipping a bob into a homogeneous melt of a predetermined optical glass, maintaining the temperature of the homogeneous melt at least the melt temperature and producing a rod of glass from the homogeneous melt, allowing the rod of glass to cool and solidify, and then cutting the rod of glass into predetermined lengths. By withdrawing the bob at a predetermined pull rate the rod of glass can be produced with a predetermined diameter. Using a constant pull rate, the rod of glass will be cylindrical in shape and can be cut into a series of individual cylindrical preforms. The preforms can be inserted into a compression molding apparatus for the forming of a glass optical element therewith. The orientation of the preform is such that the cut planar surfaces of the preform are parallel to the direction of compression of the molding process. The preforms formed by the process exhibit both good surface quality and good internal quality. Orientation of the preform with the cut surfaces parallel to the direction of compression in the final compression molding operation ensures that the optical quality surface of the preform formed by surface tension will be the optical surface of the lens formed therewith and the cut or sawed surfaces of the preform will make up the periphery of the final lens.

    摘要翻译： 公开了一种制造用于玻璃透镜成型工艺和成型镜片的预制件的方法。 玻璃棒优选地通过将鲍勃浸入预定的光学玻璃的均匀熔体中，将均匀熔体的温度保持在至少熔融温度并由均匀的熔体产生玻璃棒，使玻璃棒冷却 并固化，然后将玻璃棒切割成预定长度。 通过以预定的拉伸速率取出摆锤，可以以预定的直径制造玻璃棒。 使用恒定的拉伸速率，玻璃棒将是圆柱形的，并且可以被切割成一系列单独的圆柱形预制件。 预成型件可以插入到用于与其形成玻璃光学元件的压缩成型设备中。 预成型件的取向使得预成型件的切割的平坦表面平行于模制过程的压缩方向。 由该方法形成的预成型件表现出良好的表面质量和良好的内部质量。 在最终压缩成型操作中，具有与压缩方向平行的切割面的预成型件的取向确保由表面张力形成的预成型体的光学质量表面将是与其形成的透镜的光学表面，并且切割或锯切的表面 预成型件将构成最终镜片的周边。

    Process for generating precision polished non-plannar aspherical surfaces
    5.
    发明授权
    Process for generating precision polished non-plannar aspherical surfaces 失效
    用于产生精密抛光非平面非球面的工艺

    公开(公告)号：US06036873A

    公开(公告)日：2000-03-14

    申请号：US978717

    申请日：1997-11-26

    申请人： David A. Richards

    发明人： David A. Richards

    IPC分类号： C03B11/08 ,  B29D11/00

    CPC分类号： B29D11/00432

    摘要： A method for precision polishing non-planar, aspherical surfaces in substrates having variations in figure which are within an order of about ten wavelengths (10 .lambda.) is performed by coating the non-planar, aspherical surface with a thin, uniform layer of material, single-point-diamond turning the layer to achieve a layer surface with an excellent surface figure, and etching the layer surface down into the substrate to completely remove the layer thereby transferring the excellent surface figure to the substrate.

    摘要翻译： 通过用薄均匀的材料层涂覆非平面的非球面来进行在非常平面的非球面表面的非平面的非球面表面的非平面的非球面表面的精细抛光的方法，该非平面的非球面表面具有大约十个波长（10λ） 单点金刚石转动层以实现具有优异表面图形的层表面，并且将层表面向下蚀刻到衬底中以完全去除该层，从而将优异的表面图形转印到衬底。

    Method for precision polishing non-planar, aspherical surfaces
    6.
    发明授权
    Method for precision polishing non-planar, aspherical surfaces 失效
    非平面非球面精密抛光方法

    公开(公告)号：US5855966A

    公开(公告)日：1999-01-05

    申请号：US979513

    申请日：1997-11-26

    申请人： David A. Richards

    发明人： David A. Richards

    IPC分类号： B24D18/00 ,  B29C33/56 ,  B29D11/00 ,  C03B9/48 ,  C03B11/08 ,  C03C15/00 ,  C03C19/00 ,  C23C14/02 ,  C23C14/18 ,  C23C14/58

    CPC分类号： C23C14/5806 ,  B29C33/56 ,  B29D11/00432 ,  C03B11/08 ,  C03B9/48 ,  C03C15/00 ,  C03C19/00 ,  C23C14/028 ,  C23C14/18 ,  C23C14/5873 ,  B29L2011/00 ,  B29L2017/003

    摘要： A method for precison polishing non-planar, aspherical surfaces in substrates, particularly surfaces of molding tool substrates for molding optical surfaces therewith, which is accomplished by coating the non-planar, aspherical surface with a layer of material having a melt temperature which is less than a temperature at which the substrate will distort, heating the layer of material coated on the non-planar, aspherical surface to at least the melt temperature thereby flowing the layer of material to yield a surface tension smooth surface superimposed over the non-planar, aspherical surface, and etching the surface tension smooth surface down into the substrate to completely remove the layer.

    摘要翻译： 一种用于在衬底中，特别是用于模制光学表面的模制工具衬底的特别表面的非平面非球面表面的精细抛光的方法，其通过用熔体温度较低的材料层涂覆非平面非球面表面来实现 比衬底将变形的温度加热涂覆在非平面非球面上的材料层至少熔融温度，从而使材料层流动，从而产生叠加在非平面非球面上的表面张力光滑表面， 非球面，并将表面张力平滑的表面向下蚀刻到基底中以完全去除该层。

    Product for molding glass lenses having difficult shapes
    7.
    发明授权
    Product for molding glass lenses having difficult shapes 失效
    用于成型具有困难形状的玻璃透镜的产品

    公开(公告)号：US5762676A

    公开(公告)日：1998-06-09

    申请号：US639584

    申请日：1996-04-29

    申请人： David A. Richards ,  John C. Pulver

    发明人： David A. Richards ,  John C. Pulver

    IPC分类号： C03B11/08 ,  C03B21/00 ,  C03B40/00

    CPC分类号： C03B11/086 ,  C03B2215/11 ,  C03B2215/12 ,  C03B2215/20 ,  C03B2215/22 ,  C03B2215/47

    摘要： An improved tool is provided for pressing glass into a precision optical element having a strong concave surface. The tool is selected from ceramic and metal materials having coefficients of thermal expansion greater than the coefficient of the pressed glass. Preferred tools include a base material selected from Invar, steel and alumina with a surface layer selected from alumina, zirconia, chromium oxide and chromium carbide, having a finished thickness in the range between ten to two thousand angstroms.

    摘要翻译： 提供了一种改进的工具，用于将玻璃压入具有强凹表面的精密光学元件中。 该工具选自具有大于压制玻璃系数的热膨胀系数的陶瓷和金属材料。 优选的工具包括选自殷钢，钢和矾土的基材，具有选自氧化铝，氧化锆，氧化铬和碳化铬的表面层，其最终厚度在10至2千埃的范围内。

    Parallel catadioptric optical element
    8.
    发明授权
    Parallel catadioptric optical element 失效
    平行反射折射光学元件

    公开(公告)号：US5042928A

    公开(公告)日：1991-08-27

    申请号：US482100

    申请日：1990-02-20

    申请人： David A. Richards

    发明人： David A. Richards

    IPC分类号： G02B17/08 ,  G02B21/02

    CPC分类号： G02B17/086 ,  G02B17/0808 ,  G02B21/02

    摘要： A single hybrid optical element combines reflective and refractive imaging. The optical unit utilizes a dual-reflector outer annulus zone and a refractive inner zone to achieve a high numerical aperture. This system is particularly suitable for, but not limited to, microscope objectives or for digital data storage applications.

    摘要翻译： 单个混合光学元件结合了反射和折射成像。 光学单元利用双反射器外环带和折射内区实现高数值孔径。 该系统特别适用于但不限于显微镜目标或数字数据存储应用。

    Product and process for molding glass lenses
    10.
    发明授权
    Product and process for molding glass lenses 失效
    用于成型玻璃镜片的产品和工艺

    公开(公告)号：US5843200A

    公开(公告)日：1998-12-01

    申请号：US639674

    申请日：1996-04-29

    申请人： David A. Richards

    发明人： David A. Richards

    IPC分类号： C03B11/08 ,  C03B23/00

    CPC分类号： C03B11/08 ,  C03B2215/48 ,  C03B2215/49 ,  Y10T428/24942

    摘要： A glass preform, including a core glass adversely affected by interaction with a molding tool, is provided with a thin surface layer of glass components that are inert to the tool and have an index of refraction that matches the core glass. More specifically, the thin layer comprises glass components having respective indexes of refraction above and below the core index of refraction, in an amorphous mixture that matches the core index. According to certain features, the core glass is flint glass including greater than five percent by weight of titania, and the glass components include mixtures of silica or indium and tin oxide applied in a layer having a thickness between one hundred and one thousand angstroms. Other features of the invention provide a method for making the glass preform and a method for molding a precision optical element using the preform.

    摘要翻译： 包括不利于与模制工具的相互作用影响的芯玻璃的玻璃预制件设置有对工具是惰性的且具有与芯玻璃相匹配的折射率的玻璃部件的薄表面层。 更具体地说，薄层包括玻璃组分，其玻璃组分具有与核心折射率相匹配的无定形混合物的折射率高于和低于折射率折射率的折射率。 根据某些特征，芯玻璃是包含大于百分之五重量百分比的二氧化钛的火石玻璃，玻璃组分包括二氧化硅或铟的混合物以及施加在厚度在一千到一千埃之间的层中的氧化锡。 本发明的其他特征提供了制造玻璃预制件的方法和使用该预成型件成型精密光学元件的方法。