attachable spectroscope to an auxiliary CCD or CMOS camera as detector for gem identification

摘要

The present invention includes a spectroscope for gem identification and a fixing device to connect the spectroscope and an auxiliary image sensor. The functional compartments of the spectroscope concerning the present invention include a tube, an incident window, a slit, lens, a newly designed grism, and an exit window; there are two different kind of fixing device designed to fulfill its purpose, one is a clamp, the other is a shell.