Ill. Admin. Code tit. 32, pt. 315, tbl. E

Current through Register Vol. 48, No. 49, December 6, 2024

Table E - Measurement Apertures for Classification

Spectral Region (µm)						Duration (s)		Aperture Diameter (mm)
0.180 to 0.302						10-9 to 0.25		1.0
						0.25 to 3 x 104		3.5
0.302 to 2.8						10-9 to 3 x 104		50.0
2.8 to 102						10-9 to 0.3		1.0
						0.3 to 10		1.5 t3/8
						10 to 3 x 104		3.5
102 to 103						10-9 to 3 x 104		11.0
NOTES:	1.	These apertures are used for the measurement of optical power or energy for purposes of laser classification
2.	When the laser output is intended to be viewed with optics (excluding ordinary eyeglasses) or the laser safety officer determines that there is reasonable probability of accidental viewing with optics, a 50 mm aperture is used if the following conditions are met.
		A)	Viewing with optics presents a more severe hazard than unaided viewing.
		B)	The viewing time is sufficient to constitute a hazard.
3.	Under normal conditions these exposure durations would not be used for classification (see ANSI Z136.1 (Table 9)).
4.	For purposes of this Section 315.Table E, the following abbreviations or symbols are used:
				µm	=		micrometers
				s	=		seconds
				mm	=		millimeters
				ts	=		time in seconds

Ill. Admin. Code tit. 32, pt. 315, tbl. E