Electronically Variable Optical Diffusers
Edmund Optics, Inc.
BARRINGTON, N.J., Nov. 12, 2012 — Edmund Optics has released fully tunable electronically variable optical diffusers.
They use a liquid crystal film to vary the degree of optical diffusivity from near-Lambertian to clear. The diffusion angle can be continuously adjusted using a control knob. Diffusion angles (FWHM) range from 1° in the clear state to 70° in the fully diffused state. The diffusers feature a spectral range of 400 to 1500 nm, a 25-mm aperture, transmission of 85% and a response time of 10 to 20 ms. With C-mount mounting threads, they are compatible with the company’s full range of C-mount components, facilitating integration with additional optics illumination and sensors.
Designed to replace a full lab of diffusers, they are suitable for research and prototyping. During the prototype phase, the user can tune to the diffuser needed for the given application and then purchase a diffuser with those specifications for the final OEM application. They feature a simple user interface.
The devices also are suited for biophotonics research, holography and neutral density filtering, and for optically characterizing materials and preventing oversaturation of detectors.