| 光电测量产品 >> 光谱系统 >> 高光学密度透射系统 | |
 |
|
Whether a measurement be of a source, a filter etc, the spectral accuracy is dependant on the wavelength calibration, the optical setup, the rejection of higher diffraction orders and the stray light performance of the monochromator. The latter aspect is of particular When a monochromator is set to a given wavelength, λ, stray light is defined as that light which reaches the detector in addition to the contribution of the source at λ. Stray light originates in that light in the monochromator which is scattered from the optics due to dirt and dust, and that scattered from structures within the device, such as mirror supports etc, and reaching the exit port. Good design minimises this effect, yet this is not sufficient in many applications where the stray light component is large with respect to that to be measured. To reduce the effect of stray light upon a system, one may cascade two or more monochromators together, thereby re-selecting the desired wavelength, further dispersing the light, and on the way reducing the stray light measured; into the first monochromator enters the entire spectrum |
|
光源 真空紫外光谱仪 订制光谱仪 软X射线光谱仪 拉曼光谱仪 红外\紫外激光观察仪 夜视仪器 HPLC荧光光度计 CCD相机 动态光散射 高速摄影照相机 光纤光谱仪 海洋系列光谱仪 光谱系统 原子力显微镜 探测器 滤光片 红外光谱仪 单色仪 光栅 照度计 光信号电子学仪器 工业内窥镜 薄膜测量 PC示波器 数字记录仪 远红外太赫兹光谱仪 太阳光模拟器 袖珍数码显微镜相机 压电陶瓷 紫外线固化机 紫外反射镜 滤光片测量仪 电动位移台/电控位移台 纳米位移台 光电探测器 均匀光源
