Abstract

Proper design and manufacturing of glass molded lenses need to be performed in several steps. The whole process from customer requirements to f nal functional product is shown on two examples - a lens for street light and a lens for spot light with narrow lighting angle.

Highlights

  • Glass lenses are nowadays used for lighting and medical applications as well as in solar business or imaging systems

  • The whole process from customer requirements to f nal functional product is shown on two examples - a lens for street light and a lens for spot light with narrow lighting angle

  • This work shows measurement of light distribution for street light lens in a dark room using goniometer and measurement of light intensity for spot lens f xed on an optical bench

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Summary

Introduction

Glass lenses are nowadays used for lighting and medical applications as well as in solar business or imaging systems. Several companies in street lighting business offer lamps with one high power LED and properly designed glass lens. This is a new branch of lamps compared to older types, where many low power LEDs were used in a combination with plastic lenses. Another limitation for plastic lenses is their size and mass, which cannot exceed certain limit As it will be shown later in the article, size of optics and size of light source are closely linked. Different behavior of light is required in mine lamps or pocket lamps In these cases, the lighting angle needs to be very small. Last section points out the most important conclusions, see sec. 5 for more details

Customer requirements
Lens design
Production of prototypes
Experimental evaluation screws for positioning and tilt
Findings
Cree Cree Luminus

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