IMPROVEMENT OF THE COLOURFUL UNIFORMITY BY THREE DIFFERENT MEDIUMS OF THE PACKAGING LENS IN THE WHITE LIGHT LED (PO18, 492-498)

IMPROVEMENT OF THE COLOURFUL UNIFORMITY BY THREE DIFFERENT MEDIUMS OF THE PACKAGING LENS IN THE WHITE LIGHT LED (PO18, 492-498)

Click here to purchase
In this study, the optical design of the packaging lens which has achromatic ability is proposed in the white light LED. In order to protect the LED chip and reduce colour dispersion, the LED chip is bonded on a rectangular reflective cup and embedded in a packaging lens which is composed by three different mediums. The shapes of the interfaces between the mediums are designed accord to the refractive indices of the medium. In order to comprehend the order of the colour dispersion, the range of colour dispersion (RCD) at specific normalized intensity is analysed. According to the analysing results, the design of the achromatic packaging lens can reduce the colour dispersion obviously. In the case of the reflective cup has no reflectivity, the RCD value at zero normalized intensity even achieves one degrees. However, while the reflective cup causes the increasing in RCD value, a considerable improvement still can be achieved by the design of the free-form reflective cup.

Product Details

Published:
05/01/2018
Number of Pages:
7
File Size:
1 file , 1.3 MB

You may also like

CIE ISO 23539:2023

CIE ISO 23539:2023

Photometry - The CIE system of physical photometrystandard by Commission Internationale de L'Eclairage, 2023

CIE 251:2023

CIE 251:2023

LED Reference Spectrum for Photometer Calibrationstandard by Commission Internationale de L'Eclairage, 01/01/2023

CIE x049-P13

CIE x049-P13

IMPACT OF SAMPLING RATE ON FLICKER METRIC CALCULATIONSConference Proceeding by Commission Internationale de L'Eclairage, 10/01/2022

CIE x049-P08

CIE x049-P08

FIELD MEASUREMENT OF TLM QUANTITIES IN LIGHTING SCENARIOSConference Proceeding by Commission Internationale de L'Eclairage, 10/01/2022

Back to Top