Custom Diffractive Optical Element Diffuser
Coligh manufacture and custom diffractive diffusers. Diffractive Optical Element Diffuser is a precision-engineered beam homogenization element which transform laser light into a uniform and well-defined intensity distribution
Diffractive Optical Element Diffusers Discription
Diffractive diffusers are also often called DOE diffusers, laser homogenizers, laser diffusers, or beam homogenizers. Coligh specializes in the production and customization of diffractive optical element diffusers. Our diffractive diffusers are specifically designed to provide solutions for laser beam shaping, precisely controlling the divergence angle and energy distribution of the emitted light. Through the fabricated diffraction structure, the laser beam can be transformed into uniform, controllable spots of square, circular, rectangular, or linear shapes. These diffraction diffusers are commonly used in laser processing, 3D sensing, medical equipment, and LiDAR applications.
In addition to producing standard diffusers, we also offer flexible customization services, providing in-depth technical support for clients seeking to eliminate speckle problems, improve spot uniformity, and enhance light field control.
Diffractive Optical Element Diffusers Product Features
As a professional manufacturer of diffuser diffractive optical elements, we are committed to providing customers with superior beam homogenizers.
- Beyond conventional circular, square, rectangular, and linear patterns, we can achieve virtually any spot distribution shape, including multifocal or custom patterns.
- We offer complete customization based on your laser or LED specifications, including wavelength, divergence angle, target spot size, field of view, diffraction efficiency, and window efficiency.
- Multiple substrate materials are available for selection, covering fused silica, optical glass, and polymers to accommodate varying power levels, wavelengths, and environmental requirements.
- We provide coating services spanning the ultraviolet to infrared spectrum up to 30,000 nm.
Diffractive Beam Homogenizer Shapes We Offer
Coligh Diffractive Optical Element Diffusers Custom Capability
| Laser Mode | Single-mode laser and multi-mode laser |
|---|---|
| Operating Wavelength | 200-2000nm |
| Diffusion Angle | Custom (1D, 2D, asymmetric) |
| Output Beam Shape | Circular, Square, Line, Elliptical, or Custom patterns |
| Homogenizing Efficiency | 65%-85% or custom |
| Uniformity | ±5% to ±15% (typical) or custom |
| Optical Efficiency | 80% – 95% or custom |
| Incident Angle | Designed for defined F-number ranges |
| Polarization Dependence | Polarization-independent, Defined polarization |
| Laser Power | mW to kW |
| Substrate Materials | Fused Silica, Optical glass, Polymer |
| Thin Film Coating | AR Protective Coating @200-30000nm |
Diffractive Optical Element Diffusers Application
- 3D Camera TOF Module
When combined with a miniature laser, the diffractive diffuser and diffractive beamsplitter can scatter the laser into numerous uniformly distributed speckles while splitting it into linearly aligned beams of consistent brightness. This high-density, highly uniform structured light pattern provides more reliable feature points for algorithm processing. Furthermore, monolithic DOEs can replace complex projection lens assemblies in applications like smartphone Face ID, robotic vacuum cleaners, and LiDAR systems. - AR/VR & Automotive Lighting
Diffractive Diffuser DOEs transform laser beams into uniform, even light fields. In AR/VR applications, they function as eye-tracking diffuser plates; in automotive headlights, they create sharp cut-off lines between bright and dark zones. - Laser Material Processing
In applications like laser welding, laser annealing, and laser surface treatment, diffractive diffusers convert incident Gaussian beams into square or linear flat-top spots with uniformly distributed energy. This enhances processing quality and improves efficiency.
