Peter Schwarcz - Academia.edu (original) (raw)
Related Authors
Università degli Studi "La Sapienza" di Roma
Uploads
Papers by Peter Schwarcz
PROCEEDINGS OF the 29th Quadrennial Session of the CIE, Jun 24, 2019
The expected useful lifetime of professional LED luminaires has been extended tremendously due to... more The expected useful lifetime of professional LED luminaires has been extended tremendously due to LED technology arriving in a mature stage. On the other hand, there is a market pressure to claim longer and longer useful lifetime, sometimes without knowing the limitations of methods of prediction used and/or having real benefit for the end-users. The paper will review the limitations of predictions and gives proposals how to improve the confidence level. The author also will evaluate whether extreme long useful lifetime claimed by manufacturers have a real benefit for the end-users. There are proposals, how better luminous flux maintenance can be turned to real benefit the lighting installation by modification of metrics.
PROCEEDINGS OF the 29th Quadrennial Session of the CIE, Jun 24, 2019
The expected useful lifetime of professional LED luminaires has been extended tremendously due to... more The expected useful lifetime of professional LED luminaires has been extended tremendously due to LED technology arriving in a mature stage. On the other hand, there is a market pressure to claim longer and longer useful lifetime, sometimes without knowing the limitations of methods of prediction used and/or having real benefit for the end-users. The paper will review the limitations of predictions and gives proposals how to improve the confidence level. The author also will evaluate whether extreme long useful lifetime claimed by manufacturers have a real benefit for the end-users. There are proposals, how better luminous flux maintenance can be turned to real benefit the lighting installation by modification of metrics.