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Optical design

As for USB/AUX lens mounted on automotives, we would like to introduce the case of our optical designs.
With the result of simulation, we can offer not only optical design for light-guide and lens but also make suggestions about mounting shapes for cases, luminosity of LED, selection for chromaticity, mounting position of LED.

Development case 1

Lens for power window switches

Illuminate 7 switches with only one LED as a light source
Oshino Lamps clears the high demand mission。

The space is extremely limited around the power window switches in an automotive. This application requires that the sections that need to be illuminated are separated over other parts and the each lighting area of the lens is small.
Also, parts of the switches are push buttons that stay at high or low position, and maintaining the same amount of lighting was required. We solved this challenge by designing an additional lens that can move high and low with the push button, and using the light indirectly by reflecting the light source from the base lens.
Because of this clever solution, we made it possible to reduce the number of parts used, and the number of assembly processes. Furthermore, because only one LED is used to illuminate the multiple areas, this eliminates the variations of colors.

Connects multiple lighting areas with one lens and reduce the number of LEDs used.

Development case 2

USB/AUX lens

USB/AUX lenses

AUX products

AUX diffuser lens

AUX diffuser lens

AUX light guide

AUX light guide

USB products

USB diffuser lens

USB diffuser lens

USB light guide

USB light guide

Simulation

Oshino Lamps Ltd. uses “Optis Works” which is an optical simulation software.This enables us to perform ray-trace, luminance distribution and analysis. After the simulation, the most appropriate form of light guide is created.

Image for the simulation : Ray-trace

Image for the simulation : Ray-trace/AUX

AUX

Image for the simulation : Ray-trace/USB

USB

Analyzed image for luminance distribution after simulation

Analyzed image for luminance distribution after simulation/AUX

AUX

Analyzed image for luminance distribution after simulation/USB

USB

Measured image for luminance distribution of products

Measured image for luminance distribution of products/AUX

AUX

Measured image for luminance distribution of products/USB

USB

Oshino Lamps Ltd. develops various types of optical products by utilizing optical and color-tuning techniques we build for the development of automotive SMLs.