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    • 82. 发明授权
    • Focus detecting device and method of making same
    • 焦点检测装置及其制作方法
    • US4878078A
    • 1989-10-31
    • US190171
    • 1988-05-04
    • Takeshi KoyamaKeiji OhtakaYasuo Suda
    • Takeshi KoyamaKeiji OhtakaYasuo Suda
    • G02B7/34
    • G02B7/346
    • In a focus detecting device having a secondary image unit disposed rearwardly of the predetermined imaging plane of an objective lens, a plurality of pairs of object images based on light fluxes passing through different portions of the pupil of the objective lens are formed on a photoelectric conversion element array disposed rearwardly of the secondary imaging unit. The focus of the objective lens is detected from the amount of relative deviation between the object images formed on the photoelectric conversion element array. The secondary imaging unit includes at least two members, a first member having a first pair of lens-acting surfaces and a second pair of lens-acting surfaces on one end thereof, and a second member having a first pair of prism surfaces and a second pair of prism surfaces which differ in refractive power from each other. The second member being fixed to the first member after being rotatively adjusted relative to the first member.
    • 在具有设置在物镜的预定成像平面的后方的二次图像单元的焦点检测装置中,基于通过物镜的光瞳的不同部分的光束的多对物体图像形成在光电转换 元件阵列设置在次级成像单元的后方。 从形成在光电转换元件阵列上的物体图像之间的相对偏离量来检测物镜的焦点。 二次成像单元包括至少两个构件,第一构件,其具有第一对透镜作用表面和在其一个端部上的第二对透镜作用表面,以及具有第一对棱镜表面的第二构件和第二构件 折射力彼此不同的一对棱镜表面。 所述第二构件在相对于所述第一构件旋转调整之后被固定到所述第一构件。
    • 89. 发明授权
    • Acid anhydride ester and composition thereof, and heat-curable resin composition and cured product thereof
    • 酸酐酯及其组合物,以及热固性树脂组合物及其固化物
    • US08034962B2
    • 2011-10-11
    • US11835609
    • 2007-08-08
    • Tomohiro SugawaraTakeshi KoyamaAtsushi OkoshiTakashi SatoShuichi Ueno
    • Tomohiro SugawaraTakeshi KoyamaAtsushi OkoshiTakashi SatoShuichi Ueno
    • C07D407/04C08G65/48
    • C07D307/89B33Y70/00
    • The present invention provides an acid anhydride ester obtained by esterifying cyclohexane-1,2,4-tricarboxylic acid-1,2-anhydride and a composition of the ester, and a heat-curable resin composition and a cured product of the composition. _Provided is an epoxy resin composition using the acid anhydride ester as a curing agent for an epoxy resin, the epoxy resin composition having, for example, the following properties (1), (2), and (3): (1) the epoxy resin composition has a low viscosity at room temperature, so the components of the composition can be favorably blended with each other, (2) the acid anhydride ester has a low vapor pressure at curing temperature, so no evaporation loss occurs after curing, and the intended design of blend is capable, and (3) a cured product to be made from the composition is colorless and transparent, and changes its color to a small extent even when the product is irradiated with light or heated for a long time period. The composition is suitably used as, for example, an encapsulant for a photoelectric conversion element such as a blue LED or a white LED, a molded article, a coating, or an adhesive.
    • 本发明提供通过酯化环己烷-1,2,4-三羧酸-1,1-酐和酯的组合物得到的酸酐酯,以及热固性树脂组合物和该组合物的固化物。 提供使用酸酐酯作为环氧树脂固化剂的环氧树脂组合物,该环氧树脂组合物具有例如以下性质(1),(2)和(3):(1)环氧树脂 树脂组合物在室温下的粘度低,因此可以有利地将组合物的组分相互混合,(2)酸酐在固化温度下蒸气压低,固化后不会发生蒸发损失, 共混物的预期设计是能够的,并且(3)由该组合物制成的固化产物是无色透明的,并且即使当产品被光照射或长时间加热时也将它的颜色变化很小。 该组合物适合用作例如蓝色LED或白色LED的光电转换元件的密封剂,成型品,涂层或粘合剂。