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Introduction
11
Directional lamps
For directional lamps, we will be focusing on useful lumens.Useful lumens is the amount of luminous flux within a
90º cone in the forward facing direction of the lamp. This will tell you the amount of ‘useful’ light emitted from a
directional light source.
ES50
Comparison Chart
Traditional
Wattage
PAR16/GU10
Halogen
LED
500
475
450
425
400
375
350
325
300
275
250
225
200
175
150
125
100
75
50
345lm
7W
430lm
7W
180lm
20W
580lm
35W
800lm
45W
540lm
35W Eco
300lm
20W Eco
150lm
16W Eco
575lm
8W
339lm
35W
635lm
50W
230lm
4.5W
345lm
5.5W
425lm
7W
305lm
6.5W
95lm
18W Eco
195lm
28W Eco
325lm
40W Eco
300lm
50W Eco
140lm
3.5W
60W
50W
40W
35W
25W
20W
20W
35W
40W
50W
60W
Useful
lumens
Useful
lumens
*Equivalences and measures based on EU regulations.
Traditional
Wattage
MR16
Halogen
LED
800
775
750
725
700
675
650
625
600
575
550
525
500
475
450
425
400
375
350
325
300
275
250
225
200
175
150