Beamsplitter

A beamsplitter, often called a half-mirror, is an optical window with a semi-transparent coating which divides a beam into two or more separate beams. Beamsplitter coatings are constructed with metal or dielectric layers on one surface to yield specific transmission/reflection characteristics. The second surface is coated with an anti-reflective coating to reduce ghost images.

LARGE FORMAT BEAMSPLITTER

We produce and stock large format beamsplitter glass readily available for fabrication. These mirrors are typically used in teleprompters and displays. This beamsplitter coating is constructed of all dielectric layers. The coating is non-absorbing, meaning all light that is not transmitted is reflected. The second surface is coated with a broadband anti-reflective coating to reduce ghost images.

60% Transmission / 40% reflection
Average Reflection% 40%+/-5%, 425nm-700nm
Average Transmission 60%, minus absorption loss
Substrate: Regular Soda-lime Glass or Low Iron Soda-lime Glass
Thickness: Both .090” and .125” available
Safety Seamed edges
Side 1 – Dielectric Reflective Coating
Side 2 – Anti-Reflective Coating to reduce ghost images
Designed to optimize performance at 45 degree AOI, un-polarized light

70% Transmission / 30% reflection
Average Reflection% 30%+/-5%, 425nm-700nm
Average Transmission 70%, minus absorption loss
Substrate: Regular Soda-lime Glass or Low Iron Soda-lime Glass
Thickness: Both .090” and .125” available
Safety Seamed edges
Side 1 – Dielectric Reflective Coating
Side 2 – Anti-Reflective Coating to reduce ghost images
Designed to optimize performance at 45 degree AOI, un-polarized light

CUSTOM PRECISION BEAMSPLITTER

Our custom precision beamsplitter coatings can be produced on glass and plastic optics through the use of metal or dielectric coating designs. The coatings can be customized to meet your specific Reflection/Transmission ratio, angle of incidence and wavelength requirements. Many standard beamsplitter designs are available such as 50R/50T, 60R/40T, and 70R/30T. Below are examples of some of the custom beamsplitter coatings we have produced:

Typical Applications:

• Teleprompters
  
• Vision Systems
  
• Electronic Displays
• Instrumentation
• POP Displays
• Flight Simulators

JNS Glass and Coatings is not limited to any specifications or spectral curves shown on our website. 
Please let us help you design the coating or select the glass that is right for your application! 
Fabrication tolerances and spectral tolerances all conform to the specifications to be agreed upon by JNS Glass and Coatings and the customer.