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The VisiMax Team

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Meet Jim Johnson, Production Manager

Posted by The VisiMax Team on Jun 28, 2018 10:31:52 AM

In his spare time, Jim enjoys playing classic rock and country on acoustic guitar along with his two children, both of whom compose their own music. His daughter is a classical violinist and his son is a songwriter.

As one of the newest VisiMax team members, what excites you most about joining the team?

I’m happy to be a part of a high-tech company with complicated machines and a complex optical coating process. Not many people in the world can do what we do.

In my role as Production Manager, I’ll use my specialties in Six Sigma Lean Manufacturing to further reduce lead times and consistently improve on-time delivery. Our role in production is more than just making quality coatings and filters. It’s critically tied to service and improving the entire experience for our customers and supply chain partners.

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Topics: Optical Coating, Vacuum Coating, Capabilities

Anti-Reflective Coatings and Beamsplitters - A Synergetic Relationship

Posted by The VisiMax Team on May 31, 2018 8:17:10 AM

Development of high performance optical systems frequently requires the use of an interferometer to detect imperfections and ensure high precision performance.  Most interferometers rely on beamsplitters as do other optical applications such as aeronautical and automotive heads up displays. However, an uncoated beamsplitter will often allow stray light to be reflected in addition to the beam reflecting off of the primary surface. To achieve the desired level of performance, beamsplitters are often used in conjunction with anti-reflective coatings to not only split a beam of light into two, but also to enhance the beamsplitter’s efficiency and prevent ghost reflections caused by stray light.

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Topics: Anti-Reflection Coatings, Optical Coating

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: Business Development, Optical Coating

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