Abstract

It is common practice to use some sort of lens system between the arc-spark stand and the spectrograph in spectrochemical analyses. In many instances the lens closest to the arc gap receives considerable spatter from the arc and gradually deteriorates. A metal shield, shown in Figure 1, limits the unobstructed path between the arc gap and the lens to the cone required by the optical arrangement. This reduces the number of spatter particles hitting the lens, especially the destructive heavy particles which require trajectories that are cut off by the shield. The device also aids in keeping dust off the lens.

Design of Cassegrain Light Shields

Andrew T. Young
Appl. Opt. 6(6) 1063-1067 (1967)

Dielectric shielded nanoscale patch laser resonators

Qian Ding, Amit Mizrahi, Yeshaiahu Fainman, and Vitaliy Lomakin
Opt. Lett. 36(10) 1812-1814 (2011)

Silicon optical modulator with shield coplanar waveguide electrodes

Xiaoguang Tu, Ka-Fai Chang, Tsung-Yang Liow, Junfeng Song, Xianshu Luo, Lianxi Jia, Qing Fang, Mingbin Yu, Guo-Qiang Lo, Po Dong, and Young-Kai Chen
Opt. Express 22(19) 23724-23731 (2014)

Metallic nanomesh for high-performance transparent electromagnetic shielding

Zhuocheng Liang, Zeyu Zhao, Mingbo Pu, Jun Luo, Xin Xie, Yanqing Wang, Yinghui Guo, Xiaoliang Ma, and Xiangang Luo
Opt. Mater. Express 10(3) 796-806 (2020)

Baffling and shielding system for a millimeter-wave balloonborne telescope

Massimo Gervasi, Paolo de Bernardis, Marco De Petris, Silvia Masi, and Giampaolo Pisano
Appl. Opt. 37(19) 4277-4283 (1998)