Delta Optical Thin Film

Delta Optical Thin Film will be showing its range of Circular Variable Filters - interference narrow bandpass filters deposited on circular substrates. Film thickness, and therefore the wavelength of peak transmittance varies linearly and continuously with angular position on the segment. They are ideally suited as monochromators in compact, non-dispersive spectrometers or with supercontinuum lasers, providing medium spectral resolution, or when information is desired at several specific wavelengths in the relevant spectral range.

Delta Optical Thin Film will be at booth 804 and BiOS booth 8804 exhibiting its custom continuously variable bandpass filters (CVBPFs) for mid-size and full-frame CCD/CMOS sensors. These filters offer very high transmission and are fully blocked in the light-sensitive wavelength range of silicon-based detectors. The combination of CVBPFs with silicon detectors enables the design of very compact, robust and affordable hyperspectral imaging detectors that offer several advantages and benefits over conventional approaches.

At its booth Delta Optical Thin Film will be showing its range of custom continuously variable bandpass filters (CVBPFs) for mid-size and full-frame CCD/CMOS detectors. These filters offer very high transmission and are fully blocked in the light-sensitive wavelength range of silicon-based detectors.

A new Laser Attenuator has been developed, which utilises an ultra-hard coated, Laser Optical Multilayer Attenuator (LOMA) filter from Delta Optical Thin Film.

The laser attenuator enables computer-controlled attenuation of a monochromatic light source from 1 to 99 per cent within the wavelength region of ~ 550-1,000 nm. It provides the user with safe, repeatable, and real-time control over the attenuation by combining the LOMA filter with a linear drive, controlled electronics, and dedicated software.