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Light guides for backlighting

  • New generation TGV seat marker

 

light guide

Embedded seat marker backlighting on a new generation TGV. Significant contrast between on/off state. Integrates into a restrictive mechanical environment.

 

Gaggione produced the optical and mechanical design of the solution, recommended and integrated a holographic diffuser (diffusion angle 60°). We supply a complete function.

 

Uniformity (Emin: Emax): 50%. We designed and built a two-cavity tool (right and left).

 

  • Backlit remote control

 

light guide

LCD screen backlighting. Our optical engineers produced the optical design and submitted a machined prototype.

 

After validation of the final result, our mechanical workshop produced an optical structure composed of micro prisms of varying heights (120 to 500 µm).
Uniformity (Emin: Emax): 85%. No visible hot spot.

 

This part is injection moulded in optical quality PMMA using a 4-cavity mould.

 

Micro prism roughness is 20 ηm.

 

Optics