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Color Matching through Optical Coating: Visualizing an Example Cut-on Filter

Posted by The VisiMax Team on Aug 10, 2017 9:14:00 AM

The performance of a cut-on optical filter is typically presented using the plot of the percentage transmission at each specified wavelength. The figure below demonstrates the combination of light that would be transmitted through a cut-on filter with the stopband and pass­band in the visible range. The red, green and blue curves are color matching functions designed to quantify the way the human eye perceives color. When the transmitted spectrum is combined with color matching functions, we can see that the light transmitted through the filter will appear to be orange colored.

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Topics: Optical Filters, Color Matching

Environmental Durability Testing on Optical Coatings Glass for the Display Industry

Posted by The VisiMax Team on Jul 30, 2017 9:10:00 AM

Environmental durability testing is essential for optical coatings prone to degrading due to exposure to humidity, temperature changes, abrasion and exposure to chemicals. To ensure the durability of optical coatings, testing should be conducted to simulate maximum exposure to these variables. In the display industry, humidity and temperature are particularly relevant because the light from bulbs used in certain devices can create extremely high temperatures after prolonged usage. Any coatings used on optical components, regardless of the substrate, must withstand these conditions to avoid interfering with lens performance, and ultimately the performance of the entire product.

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Topics: Anti-Reflection Coatings, Optical Coating Durability

Common Uses of Optical Filters: An Example of LED Emission and Color Perception

Posted by The VisiMax Team on Jul 13, 2017 8:50:00 AM

A light source, whether natural or man-made, typically emits a broad spectrum of wavelengths, including ultraviolet and infrared. In some applications, this full spectrum is acceptable or even desired. In others, however, it may be necessary to limit the wavelengths passing from the light source. This is where optical filters come in.

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Topics: Optical Coating, Optical Filters

Ongoing Optical Coating Education: VisiMax's Annual Training Day Focuses on Safety and Performance

Posted by The VisiMax Team on Jun 23, 2017 10:09:00 AM

Every year, VisiMax Technologies holds a "Training Day" for all employees. Though the company's expert staff has thorough experience, the company recognizes the value of continued optical coating education.  Chris Murphy, VisiMax Vice President, explains why the company takes the time to devote 100% of a day to training on processes, equipment, and safety.

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Topics: Optical Coating, Business Development

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