Sensing Components

Diffusers (Time-of-Flight and Flood Illuminators)

Diffractive Optical Elements

Diffusers are used to homogenize light and expand a narrower source beam into a broader range of angles. Often diffusers are designed to have more optical power at larger deflection angles in order to produce uniform field of illumination on a flat backdrop.

Finisar works with OEM customers to provide unique optical solutions based on Finisar diffractive optics. Contact diffractiveoptics [at] finisar.com for more details.

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Key Features

Designed for good transmissivity and uniformity
Uniform illumination, even in the corners
Designed to reduce speckle noise
Customizable design of power vs deflection angle
Stock designs are optimized for Finisar VCSEL arrays
Micron-thick active layer
Etched directly into robust fused silica substrate and chemically inert dielectrics, no organics or polymers
Wafer-scale mass production
Withstand temperatures up to 500°C
High power handling up to 125 GW/cm2
Excellent long-term reliability

Applications

Illuminators for Time-of-Flight 3D sensing (cell phones, consume electronics, autonomous vehicles)
Flood illuminators for 2D sensing
High power beam homogenizer (laser machining)

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Diffusers (Time-of-Flight and Flood Illuminators) Product Brief