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Lamp Life Calculator

Use this reference to help plan your maintenance and get the most from your lightsource. Works with any lightsource brand using EKE, DDL, or EJA Quartz Halogen lamps. Because FTI’s SOL-R™ models feature integral digital voltage display, the information can be put directly into the lightsource with ease and accuracy.

Reference a voltage value from the left column. The second column shows the resulting intensity and the last three columns show mean life in hours for each lamp type.

Lamp Life Reference Table (click to expand)

Lamp Life (hours)
Voltage %Intensity %DDLEKEEJA
10010050020040
9996.8456422645
9893.7463725551
9790.7172128858
9687.7581632665
9584.8692537074
9482.04105142084
9379.28119447896
9276.581360544109
9173.951551620124
9071.381770708142
8968.872024810162
8866.432318927185
8764.0426591064213
8661.7230551222244
8559.4535151406281
8457.2440521621324
8355.0946781871374
8252.9954102164433
8150.9562682507401
8048.9772762910582
7947.0384613385677
7845.1598593944789
7743.33115104604921
7641.551346553861077
7539.831578563141263
7438.151854374171483
7336.532183287331747
7234.9525762103052061
7133.4230470121882438
7031.9436124144502890
6930.542932171733435
6829.1151152204614092
6727.7661104244424888
6626.4673188292755855
6525.287904351627032
6423.98105879423528470
6322.81279045116210232
6221.661549786199112398
6120.561883707534815070
6019.52296979187918376
5918.4828102611241022482
5817.534501213800527601
5716.5542508117003234006
5615.6452567121026842054
5514.7665255626102252204
5413.9281328932531665063
5313.11101779340711781423
5212.341279175511670102334
5111.591614834645934129187
5010.882048000819200163840
Voltage %Intensity %DDLEKEEJA

If the Quartz Halogen lamp type you are using is not shown, download our Excel spreadsheet.

To set the lightsource for a predetermined lamp life, make a selection from the right hand column. The resulting intensity will be displayed, along with the required input voltage.

The matrix is calibrated to display results for 1% differences in intensity (up to 50% intensity). Therefore, when selecting a lamp life value, choose a value closest to the desired target. If you want to know what happens when the lamp receives more than full rated voltage, or you require more precise values, download our spreadsheet, or contact us.

Of course, this information can only be used as a guide, as many influencing factors affect lamp life. More information on lamps.

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