公开(公告)号：US20040090624A1

公开(公告)日：2004-05-13

申请号：US10703665

申请日：2003-11-10

Applicant: SHIMADZU CORPORATION

Inventor： Kazumi Yokota ,  Tomoki Sasayama

IPC: G01J003/28

CPC classification number: G01J3/06 ,  G01J3/28

Abstract: In a spectrophotometer, the following formula is stored in advance as a correction formula of a rotation angle in a correction formula storing portion; nullnullnullnullnullAnullsin (C1nullnullnullnulla)nullBnullsin (C2nullnullnullnullb)nullnullc, wherein C1, C2 represent coefficients theoretically determined in advance by a structure of a reduction mechanism, and A, B, nulla, nullb, nullc are coefficients specific to the reduction device which are calculated based on measurement results of a plurality of bright line spectrums through fittings by a coefficient determining portion. In case a sample is measured actually, when a desired wavelength is set, a rotation angle correcting portion corrects a rotation angle null corresponding to the desired wavelength to calculate nullnull by applying the above-stated correction formula, and then, controls a motor so that a diffraction grid is rotated by the angle nullnull.

Abstract translation: 在分光光度计中，预先存储以下公式作为校正公式存储部中的旋转角度的校正公式; θ'= theta + A.sin（C1.theta + thetaa）+ B.sin（C2.theta + thetab）+ thetac，其中C1，C2表示理论上由减少机构的结构确定的系数，A， B，θa，thetab，thetac是通过系数确定部分通过配件的多个亮线谱的测量结果计算的减小装置特有的系数。 在实际测量样品的情况下，当设置期望波长时，旋转角度校正部分通过应用上述校正公式校正对应于期望波长的旋转角度θ来计算θ'，然后控制马达 衍射栅格旋转角度θ'。