TECHNICAL DEPT. Lenses Test Report Via Monfalcone 41 20092 Cinisello Balsamo (Milano) - Italy Tel. +39 0266013695 - Fax +39 0266013500 MODEL NO: PLJT50 - PLJT51 SUBJECT: LED 1-3-5W - Lens-diffuser Coupling - Output Luminous Intensity Measurement PLJT50 - PLJT51 * * * High diffusion No vibration problems Color: White Milk Typical applications are * * * * Architectural lighting Step-marker Signalling All the applications where power diffused lighting signalling is requested. DESCRIPTION: Verification of Luminous Intensity in coupling conditions between Khatod lenses and 1W White LEDs. REPORT: PLJT50 - PLJT51 is a special lens whose visual capacity achieves 170 on horizontal plane by creating a side view effect. PLJT50 - PLJT51 diffuses the Power LED light as a real diffuser and not as a simple dot of light. The lens gives the light a full side view effect with a great light uniformity. The following measurements have been takes by using a standard white power LEDs at 0,5 m - 1 m - 2 m distance. MEASURED DATA: Column 1 shows p/n of the Lenses, column 2 shows Luminous Intensity detected measuring LEDs without lens, column 3 shows Luminous Intensity detected on LEDs coupled with lens, column 4 shows the difference (X*) between col. 2 and col. 3 Lens Diffuser PLJT50 - PLJT51 Lux from 0,5 Mt (ftc from 0,5 Mt) Lux from 1 Mt (ftc from 1 Mt) Lux from 2 Mt (ftc from 2 Mt) Lux (ftc) 42,6 (3,93 ftc) 10,5 (0,97 ftc) 2,7 (0,25 ftc) Test carried out after 5 min. of operation of the LED to 350 mA ~ , local power source GOSSEN KONSTANTER mod 3226-K118 Measurements carried out with Luxometer mod LUX-1337 of ISO-TEC and MINOLTA mod LS - 150 * X is the value of the measurement of the LED brightness at 1 meter distance, without optic devices applied to the LED. www.khatod.com technical@khatod.com Page 1 01/07/2008 TECHNICAL DEPT. Lenses Test Report The diagram shows the performance of Khatod lenses Height Spectrum Distribution 330 320 340 350 0 0 Lux 10 20 5 2,7 Lux at 2 Meters 30 40 310 10,5 Lux at 1 Meters 50 300 60 25 290 70 280 30 Viewing 80 45 270 90 260 100 250 42,6 Lux at 0,5 Meter Floor 110 240 120 230 220 210 130 200 190 2 Meters 180 1 Meter 170 160 140 150 0,5 Meter Some photos Test conditions: Test current: 350 mA / LED Room Luminous Intensity :0 Lumen Room Temperature: 33 C LED temperature after 10 min. : ~ 49 C Differeces between PLJT50 -PLJT51: PLJT50 www.khatod.com PLJT51 technical@khatod.com Page 2 01/07/2008 TECHNICAL DEPT. Lenses Test Report Drawing. www.khatod.com technical@khatod.com Page 3 01/07/2008 TECHNICAL DEPT. Lenses Test Report Drawing. www.khatod.com technical@khatod.com Page 4 01/07/2008 TECHNICAL DEPT. Lenses Test Report Lens characteristics Parameter Symbol Rating Unit Lens Material PC -- -- Holder Material -- -- -- Operating Temperature Topr -40 to +120 C Storage Temperature Tstg -40 to +120 C Average transmittance in visible spectrum (400 - 700nm) >90% as measured by using 3mm thick Optical Grade PC LED characteristics *Value is valid for any 1-3-5W lambertian LED. Notes: Please note that flow lines and weld lines on the external surfaces of the lenses are acceptable if the optical performance of the lens is within the specification described in the section "OPTICAL CHARACTERISTICS" - Should you require further information, please contact Khatod for advice. - All lens testing must be subject to identical conditions as Khatod test condition. - Published by Khatod optoelectronic srl - All the data contained in this document are the proprety of Khatod optoelectronic srl and may change without notice. KHATOD LENS Use And Maintenance * DO NOT HANDLE OR INSTALL LENSES WITHOUT WEARING GLOVES, SKIN OILS MAY DAMAGE LENS OR LIGHT TRANSMISSION * CLEAN LENSES WITH MILD SOAP AND WATER AND A SOFT CLOTH * DO NOT USE ANY COMMERCIAL CLEANING SOLVENTS ON THE LENSES Khatod SRL, Milan, Italy, manufactures lenses for LEDs. Any other use of the lens shall void our liability and warranty. The lenses are an inert component to be used in the manufacture of various products. Our warranty and liability are limited only to the manufacture of the lens. You may not modify, copy, distribute reproduce, license or alter the lens and related materials of Khatod SRL. Khatod SRL does not warrant against damages or defects arising out of the use or misuse of the products; against defects or damage arising from improper installation, or against defects in the product or in its components. No warranty of any kind, expressed or implied, is made regarding the safety of the products. The entire risk as to the quality or performance of the product is with the buyer. In no event shall Khatod SRL or Khatod USA be liable for any direct, indirect, punitive, incidental, special, consequential damages, or any damages whatsoever arising out of or connected with the use or misuse of the product. Khatod SRL shall not have any obligation with respect to the product or any part thereof, whether based on contract, tort, strict liability or otherwise. Buyer assumes all risks and liability from use of the product. The laws of Milan, Italy govern this product warranty and liability and you hereby consent to the exclusive jurisdiction and venue of courts in Milan, Italy in all disputes arising out of or relating to the use of this product. www.khatod.com technical@khatod.com Page 5 01/07/2008