Light guides for backlighting

• New generation TGV seat marker
  

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
  

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.