2016•Electronic Science and TechnologyRequires access

Design and Application of LED Collimating Lens Based on TIR

Wang Wei-we

Abstract

A design method for collimating LED lens with free surface is introduced and a practical collimating lens with the method based on TIR( Total Internal Reflection) is designed by approximating for the final 3D model successfully. The maximum diameter of the lens is 1 mm with a height of 2 mm. Computer simulation with the lens matched with CREE-XPE shows an efficiency of 84. 8% and a K value of 125. 8 cd / lm. With the lens applied to35 W searchlight,a spot of a diameter of 8 m results with the spot center illumination up to 60 lux 100 m away3. 2°. Tests on the fabricated collimation lens show a beam angle of. The lens is used in the actual searchlights.

About this research paper

What this paper is about

Why it matters

A significance statement is not available in the OpenAlex record.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

Key concepts: Collimated light, Lens (geology), Optics, Simple lens, Total internal reflection, Materials science, Reflection (computer programming), Focal length