Rowland circle gratings
Rowland circle gratings represent the basic form of imaging concave gratings. In the Rowland circle configuration the entrance slit, grating and detector are located on a circle, the diameter of which equals the radius of the grating substrate.
This configuration ensures that the imaging of the entrance slit is free from defocusing as well as primary coma and displays only minimal spherical aberrations. Although pronounced astigmatism is present, the resulting elongation of the slit images does not significantly reduce the resolving power.
The grating structure of a Rowland circle grating, projected onto the plane surface tangent to the vertex, consists of equidistant straight grooves.
罗兰圆光栅
罗兰圆是物理学家罗兰(Henry A. Rowland) 在 1880
年代初期所发现。罗兰发现，若将缝光源和凹面光栅放置在半径等于凹面光栅曲率半径的圆周上，且该圆与光栅中点G相切，则由凹面光栅形成的光谱呈在这个圆周上，因为是罗兰*先发现，因此该圆称为罗兰圆。
基本解释
Rowland circle
在凹球面反射镜面上刻划一系列等间距的平行线条构成的反射光栅。它具有分光能力和聚光能力。罗兰发现，若将缝光源和凹面光栅放置在半径等于凹面光栅曲率半径的圆周上，且该圆与光栅中点G相切，则由凹面光栅形成的光谱呈在这个圆周上，该圆称为罗兰圆。
- 温馨提示：为规避购买风险，建议您在购买前务必确认供应商资质与产品质量。
- 免责申明：以上内容为注册会员自行发布，若信息的真实性、合法性存在争议，平台将会监督协助处理，欢迎举报
