Process for preparing dihalovinylcyclopropanecarboxylic acids
    3.
    发明授权
    Process for preparing dihalovinylcyclopropanecarboxylic acids 失效
    二卤乙烯基环丙烷羧酸的制备方法

    公开(公告)号:US4500733A

    公开(公告)日:1985-02-19

    申请号:US466182

    申请日:1983-02-14

    CPC分类号: A01N53/00

    摘要: A cyclopropanecarboxylic acid of the formula ##STR1## is prepared by the reaction of a compound of the formula ##STR2## with an alkali metal hydroxide or alkaline earth metal hydroxide in an ether type solvent. R.sup.1, R.sup.2, and R.sup.4 each independently is hydrogen or a hydrocarbon residue, R.sup.3 is hydrogen or lower alkyl, X is halogen, and A is --CH.sub.2 --CX, 3 or --CH.dbd.CX.sub.2.

    摘要翻译: 通过式(Ia)化合物与碱金属氢氧化物或碱土金属氢氧化物在醚类溶剂中的反应来制备式“IMAGE”的环丙烷羧酸。 R1,R2和R4各自独立地是氢或烃残基,R3是氢或低级烷基,X是卤素,A是-CH2-CX3或-CH = CX2。

    LIGHT SCANNING DEVICE
    7.
    发明申请
    LIGHT SCANNING DEVICE 失效
    光扫描装置

    公开(公告)号:US20060023283A1

    公开(公告)日:2006-02-02

    申请号:US11190921

    申请日:2005-07-28

    IPC分类号: G02B26/08

    CPC分类号: G02B26/123 G02B26/126

    摘要: A first fθ lens is arranged to form an inclination angle α1 to a main scanning plane. A second fθ lens is arranged to form an inclination angle α2. In order to determine the inclination angles α1 and α2, curvature amounts of scanning lines generated on a scanned surface are measured when the fθ lenses are independently inclined one at a time at a minute angle. Change rates K1 and K2 are obtained from the measured curvature amounts and the minute angles. The inclination angles α1 and α2 are determined such that |K1 α1+K2 α2| is no more than a certain value.

    摘要翻译: 第一透镜被配置成与主扫描面形成倾斜角α1。 第二个透镜被配置成形成倾斜角α2。 为了确定倾斜角α1和α2,当透镜独立地以一个微小的角度一次倾斜时,测量在扫描表面上产生的扫描线的曲率量。 从测量的曲率量和微小角度获得变化率K 1和K 2。 倾斜角α1和α2被确定为使得| K 1α1 + K 2α2 | 只不过是一定的价值。