UPCOMING TRADE SHOWS/EXHIBITIONS
  • Optics & Photonics 2021
    August 1 - 5th, 2021
    San Diego Convention Center, CA
    Booth #537
  • SPIE - OPTIFAB
    October 18 - 21st, 2021
    Rochester Riverside Convention Center
    Rochester, NY
    Booth # TBD
  • BiOS / Photonics West
    March 22 - 27th, 2022
    Moscone Center, San Francisco CA
    BiOS Booth #8341
    Photonics West Booth #: 3341

VIS / NIR BEAMSPLITTERS

When using a beamsplitters in an optical system, it is critical that all light incident upon the coating be reflected (R) or transmitted (T) with minimal loss due to absorption. To meet this requirement, Andover's VIS / NIR beamsplitters are constructed of all dielectric materials that keep absorption to just 0.5 - 1.0%, depending on the R/T ratio. To minimize reflections, we add broadband antireflective coatings that meet or exceed the following environmental specifications. These beamsplitters are designed for use at 45° angle of incidence in randomly polarized light.

 

GENERAL SPECIFICATIONS

Substrate Material:                   Schott® BK-7

Thickness:                                3mm 0.5mm

Size Tolerance:                        +0.00/-0.25mm

Coating Quality:                       60/40 per MIL-C-48497 A

Surface Quality:                       80/50 per MIL-C-48497 A

Humidity and Abrasion:           Per MIL-C-48497 A

Max. Operating Temperature:  +100°C

Flatness:                                 4 wave per 25mm or better

Parallelism:                             30 arc seconds or better

Angle of Incidence:                 45° random polarization

Min. Clear Aperature:             85% of outside dimension

 

APPLICATIONS

  • Microscopy
  • Spectroscopy
  • Interferometry
  • Astronomy

BENEFITS

  • Hard-coated for maximum durability
  • R/T ratios from 80/20 to 30/70
  • High quality optical crown glass substrate