Blog - Acktar black coatings


Stray light – what is it, and what kinds of stray light exist?

What is stray light? Stray light is light which enters a system from outside the field of view and therefore is reflected from internal part surfaces of the system and eventually reaches the detector impacting signal to noise or image quality as the case may be. This is prevented by a combination of mechanical design and…
Read More
Black oxide vs acktar vacuum black coating

What is Black Oxide Coating and What Are The Benefits?

Black Oxide Coating - Definition and Process Black oxide is a material used for coating materials such as stainless steel, copper, and zinc, which are all considered ferrous materials. This coating is unique because it will give you the same results as other finishes, but it is cheaper to do and has distinctive advantages. Black oxide is…
Read More

SWIR Sensors

  What is Short-Wave Infra-Red (SWIR) and Electromagnetic Spectrum? Did you know we can only 0.0035% of the world around us?  The Electromagnetic Spectrum comprises of radio waves, microwaves, infrared waves, visible light, ultraviolet, x-rays and gamma rays. Scientists and physicists identified and developed ways to see and utilize the waves we don't see with our…
Read More
autonomous cars

Object Identification for Autonomous Cars

Autonomous vehicles are expected to result in fewer road casualties and more efficient traffic. But driver assistance systems also protect lives. For a safe function of the optical sensors– the basis of autonomous driving-, the stray light must be certainly suppressed as far as possible. With a lane departure warning system, it is theoretically possible to…
Read More
comparison of_ir absorber coating methods

Comparison of IR Absorber Coating Methods

Infrared radiation characterized by wavelengths ranging from 0.700 – 1050μm is no exception. Absorption and reflection of IR radiation on a specific surface can be altered with the help of coating. This article describes applications and characteristics of IR absorber coating in optical systems and a few other industries. A clear comparison has been made among…
Read More
how to increase surface_emissivit when it is essential

How to Increase Surface Emissivity & When It Is Essential?

We have always been fascinated by how engineering systems handle all sorts of critical environmental challenges. Whether it is NASA dealing with high temperatures (up to 1000 °C) caused due to friction between a space vehicle surface and atmosphere at a hypervelocity, or challenges in achieving accuracy of spectrometer, telescope or microscope, it is essential to…
Read More

Stray Light Reduction in Industrial Optics

Getting to know the principles of stray light reduction is key to getting accurate measurements while working with your optical device. Whether it’s a telescope, microscope, a chronograph or even a spectrometer. If you use any of these optical instruments for important measurements or tests, get prepared to find out how to reduce stray light. Why…
Read More

Black & White Thermal Control Coatings Comparison Experiment

ABSTRACT In space applications, thermal control, emissivity and absorptivity are critical factors to the optimum performance of space vehicles or satellites. Thermal control coatings (TCC) are designed to have specific radiative properties that are tailored for different specific missions. For example, for solar orbiters, a radiative surface coated with a white coating having low absorptance and…
Read More
cryogenic infrared calibration target

A Cryogenic Infrared Calibration Target

Description: In a recent assessment of the performance of different absorptive coatings as compact cryogenic infrared calibration targets, Acktar Fractal Black products exhibited lower diffuse and specular reflectance over a range of frequencies. E. J. Wollack,a) R. E. Kinzer, Jr., and S. A. Rinehart NASA Goddard Space Flight Center, Greenbelt, Maryland 20771, USA ABSTRACT Two variants…
Read More
low reflectance at extreme ultraviolet euv

Low reflectance at Extreme Ultraviolet (EUV)

EUV Reflectivity measurements on Acktar Sample Magic Black S. Doring, Dr. K. Mann Laser-Laboratorium G¨ottingen e.V. October 28, 2011 Measurement report *Download now: Low reflectance at Extreme Ultraviolet (EUV)-PDF Introduction Using the EUV source of LLG, reflectivity measurements have been conducted on Magic Black Sample (Ref. #333) at a center wavelength of 12.98nm. The measurement proce-…
Read More