IES LM-79 "Mesures électriques et photométriques des produits d'éclairage à semi-conduc...
Quantité : 100 Prix : Contact me
As the development of LED technology continues to grow and diversify, the need for consistent and standardized testing procedures for LED has become more prevalent than ever. SHNEZHEN Southern LCS Compliance Testing Laboratory Ltd. is an NIST NVLAP Accredited testing for LM-79 (NVLAP Lab Code: 600167-0).
LCS Testing Laboratory has made strides to stay current with the new testing standard LM-79 set forth by the IESNA (Illuminating Engineering Society of North America). In addition, "IN-SITU" testing is now a priority when testing our LED light systems for more reliable results.
IES LM-79 "Electrical and Photometric Measurements of Solid-State Lighting Products"
Approved method describing procedures and precautions in performing reproducible measurements of LEDs:
- Total luminous flux
- Electrical powers
- Luminous Intensity distribution
- Efficacy (lm/watt)
- Chromaticity
LM-79 Scope
Applies to LED-based products incorporating control electronics and heat sinks, that is, those devices that require only AC mains power or a DC voltage power supply to operate.
Absolute Photometry Basis
- LM-79 requires complete luminaire testing
- Traditionally, photometric evaluation of lighting products is based on separate tests for lamps and luminaires ("relative")
- For SSL products, LED lamps typically cannot be separated from their luminaire because of heat effects ("absolute")
Relative vs. Absolute Photometry
- Relative testing – Lamps of interest and luminaire (with reference lamp) are measured separately. Then the actual light distribution and intensity of the complete luminaire of interest is derived by normalization of the test data
- Absolute testing – The actual light distribution and intensity of the luminaire of interest is measured directly from the complete luminaire.

Personne à contacter : Liz Cheung, +13 1 29 20 65 15
Bonne affaire : acheter au vendeur
Nous vous invitons à lire nos conditions générales d'utilisations. Vous pouvez aussi vous rendre sur nos FAQ et consulter notre page d'informations sur les risques liés à la contrefaçon.
|
Cette page concerne les importateurs et exportateurs de IES LM-79 "Mesures électriques et photométriques des produits d'éclairage à semi-conduc... Rechercher dans la catégorie : Biens d'équipement Rechercher dans la catégorie : photometriques, semi, mesures, produits, eclairage, conduc, electriques |
Thursday 11 September 2014
Biomooi Intl. Co. Ltd. is the most professional eyelash salon and beauty supplier located in Taiwan. We are comprised by dermatology experts from the U.S and Europe with years of experience. Now we provide various lash products and services of eyelash extension, eyelash extension adhesive/glue...
S&J
- 407 - Taichung , Taiwan
- 886437038989
Saturday 28 April 2007
Quantité : Mimimum 20 - Prix : USD $21 per Carton
I would like to introduce myself as manufacturer/exporter of process food products as Alphonso Mango Pulp/Slices,Pineapple slices , Guava Pulp, Banana pulp. Please back to me with details if anybody wants to buy from us. ThanksLocalisation : D-1 KALPANAMATI HSG SOC, NEAR AUNDH SWIMMING POOL...
LAB EXPORTS
- labexports
- 411007 - PUNE
- 91 9881122723
Thursday 18 October 2012
Quantité : 1 - Prix : 1,00 €
Indo-Nippon Medical Trading Co is proud to be the exclusive distributor of all Vitrification products by Cryo Tech Lab in India.Cryo Tech India will be now be involved in the field of human in vitro fertilization.Cryo Tech India has developed vitrification for cryopreservation products...
Indo-Nippon Medical Trading Co
- 400050 - Mumbai
- 91 22 61996500
Paiement sécurisé




