Luminit Light Shaping Diffuser Product Image

Light Shaping Diffusers

Homogenising and shaping light with the highest transmission.

Supplier: Luminit

Technology type: Light Shaping Diffusers

Holographic light shaping diffusers (LSD) from Luminit offer excellent optical transmission between 300nm and 1500nm. Depending on the angle. LSD's achieve between 85 % and 92 % transmission. The low backscatter of the diffuser structure is anti-reflective and uses the light that would otherwise be lost in a Fresnel lens.

A standard piece of polycarbonate substrate is 89 % transmissive. Thanks to the special light shaping structure, the transmission is improved to 92%. The adjacent curve shows the transmission efficiency of a 10° diffusers, measured at the following wavelengths: 532nm – 90 %, 632nm - 90%, 850nm - 89%, 980nm - 89%, 1064nm - 89%, 1550nm - 88% (UV transmitting diffusers are also available).

Available angles: LSD's shape, control and distribute light precisely. The circular angles of our diffusers range from 0.5° to 100°, the elliptical angles are available from 1° to 60° in the narrow and from 10° to 80° FWHM (full width at half maximum) in the wide orientation.

Uses and application areas: "Hotspots" and uneven light distribution are common problems with various light sources. The Light Shaping Diffusers provide uniform light in critical applications such as LCD backlights, LED displays, machine vision, automotive lighting, and displays.

Light shaping diffuser applications

  • LED lighting
  • The backlight of LCD's
  • LED displays
  • Projection systems
  • Scoreboards and signs
  • Image processing/ inspection systems
  • Cell phones and tablets
  • Illumination for microscopy
  • Illumination for fibre optics
  • Medical instruments

What's in this range?

All the variants in the range and a comparison of what they offer

Light shaping diffuser specifications

Angle range (FWHM)

Circular: 0,5° to 100°

Elliptical: minor: 1° to 60°; major: 10° to 80°

Transmission efficiency

Circular: 0,2° to 20° ≥ 90%; 20° to 80° ≥ 85%

Elliptical: ≥ 85%

Angle tolerance (based on a 10" x 10" area)

< 1°: ± 0.5°

> 1° - < 10°: ± 1°

> 10°: ± 10%

Transmission spectral range

400nm to 1500nm

Temperature range

-30°C to 80°C @ 240 hours

Humidity

> 95% ± 5 % RH @ 24 hours

Refractive index

PC = 1,586; PE = 1,51; AC = 1,494; Epoxidharz = 1,50

UV resistance

UVA/UVB (900 Kjm^2)

PE: Δa = -2,3; Δb = -4,42

P1: Δa = -2,98; Δb = 10,27

P3: Δa = 1,90; Δb = 3,98

Luminit light shaping diffusers

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