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Image of Konica Minolta LM-1 Luminance Meter

Konica Minolta LM-1 Luminance Meter

Discontinued

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Luminance Meter

Product Info Related Products

Type	Reflex-viewing spot-reading automatic/manual luminance meter
Measuring method	Reflected light by silicon photo cell with 1° angle of acceptance
Viewing System	Focusing through-the-lens reflex type
Objective lens	85 mmf / 2.9
Angle of view	Circular 9° with central 1° marked circle
Magnification	2.96X focused at infinity
Focusing	1m (3.3 ft.) to infinity by objective single helicoid; eyepiece adjustable from 4.6 to ±2.7 diopters
Minimum measuring area	ø15 mm at 1m (ø2.4 mm with close-up lenses)
Response time	Automatic:	Approx. 3 sec. from 0.01 to 99900
	Manual:	Approx. 2 sec. from 001 to 999
	Analog:	90% within 0.4 sec.
Calibration	C.I.E. standard
Spectral-sensitivity error	Within ±2% or C.I.E. relative photopic luminosity curve
Accuracy	Within ±4% of C.I.E. standard, ±1 digit in last display position
Screen-flicker accuracy	within 1% of average luminance with projection cycle of more than 72 Hz and a duty of 70% (projector at 24 fps)
Influence of flare	Less than 1.5% from outside the 1°angle of acceptance
Analog output	Output voltage: 1v over full scale
Output impedance	10 k ohms

SKU: MINO-LM-1