Pro Lite Technology

UV Integrating Spheres

Light: the fuel of life


Labsphere offers a series of integrating sphere assemblies featuring magnesium fluoride over aluminum (MgF-Al) coating process. The DUV Series Integrating Spheres are available in 2 inch, 4 inch, and 6 inch diameter spheres with a choice of three (3) or four (4) ports. Each sphere assembly includes a baffle, SMA Adapter, TO5 Detector Adapter, and Port Plugs coated with our new MgF-Al deep UV coating.
The sphere assemblies are provided with M4 or M6 (or 1/4-20) center mount plates for easy mounting to an optical bench. A selection of optional mounting posts and bases are available.


Aluminum has a high intrinsic reflectance value in the UV region above 100 nm. The protective overcoat of magnesium fluoride helps protect the aluminum and optimizes its reflectivity. Our new MgF-Al coating is quickly becoming an industry and national laboratory choice of coating for applications in the UV wavelength regions. The coating is efficient for applications covering the 100 to 400 nm range and is more stable than PTFE materials in that region. Our deep UV coating provides three major advantages for use in the 100 to 400 nm region:
  • Non-fluorescence
  • Damage Resistance
  • High Stability
The coating has a reflectance of >90% over the wavelength region from 1000 to 2500 nm, and may also be used effectively for many VIS and NIR applications.
Labsphere provides detailed information on the care and handling of the DUV spheres to help extend their lifetime and to ensure you get accurate, repeatable measurement results.

  • High Stability for UV Applications Ranging from 100 to 400 nm
  • No Fluorescence
  • >90% Reflectance from 1000 to 2500nm
  • High Power Damage Threshold
  • Suitable for UV Laser Work
  • Vacuum Compatible


  • Semiconductor Metrology
  • Laser Power Measurement
  • UV Calibration Transfer Instrument


Sphere Size: (inches) 2 4 4 6 6 6
Sphere Size: (cm) 5.08 5.08 10.2 10.2 15.2 15.2
Interior Coating:  MgF-Al  MgF-Al  MgF-Al  MgF-Al  MgF-Al  MgF-Al
Port Locations:  0,90 NP  0,90,270, NP  0,90 NP  0,90,270, NP  0,90 NP  0,90,270, NP
Port Size: (inches) 0.5 0.5 1 1 1.5 1.5
Port Size: (cm) 1.27 1.27 2.54 2.54 3.81 3.81
Baffle Placement:  *
# Port Plugs Included:  1 2 1 2 1 2
Port Plug #1 - Size: (inches) PP-050-UV  PP-050-UV  PP-100-UV  PP-100-UV  PP-150-UV  PP-150-UV
SMA Adapter:  SMA-050-UV  SMA-100-UV  SMA-100-UV  SMA-150-UV  SMA-150-UV