STRAHLUNGSDETEKTOR

摘要

PCT No. PCT/GB95/01902 Sec. 371 Date Apr. 10, 1997 Sec. 102(e) Date Apr. 10, 1997 PCT Filed Aug. 11, 1995 PCT Pub. No. WO96/05487 PCT Pub. Date Feb. 22, 1996An ultra violet radiation detector comprises a slice of silica (10) having an entrance slit (18) from which radiation diverges to a curved reflective face (20, 22) which reflects it to a planar diffraction grating (28) as a convergent beam. The grating focuses a required spectral order on an array of UV detectors (24). Usually the first order spectrum is focused. The detector may be hand held.