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90mm EFL MgF2 Coated, UV-NIR Corrected Triplet

Effective Focal Length EFL (mm):
90.00
Focal Length Tolerance (%):
±1.5 @ 248nm
Back Focal Length BFL (mm):
84.76
Back Focal Length BFL from Housing (mm):
81.9
Clear Aperture CA (mm):
22.5
Substrate:
CaF2 / Fused Silica / CaF2
Surface Quality:
60-40
f/#:
4.00
Numerical Aperture NA:
0.13
Coating:
MgF2 (193-1000nm)
Coating Specification:
MgF2 @ 600nm
Effective Focal Length EFL @ 248nm (mm):
90.00
Housing Diameter (mm):
30.00 ±0.05
Housing Length (mm):
20.50 ±0.05
Type:
Achromatic Triplet Lens
Wavelength Range (nm):
193 - 1000
RoHS:

Product Family Description

  • Calcium Fluoride and UV Fused Silica Elements
  • Broadband Color-Corrected Design from 193nm to 1000nm
  • Ideal for Fluorescence and Spectroscopy Applications

Designed with broadband applications in mind, our UV-to-NIR corrected lenses provide a consistent focal length (see chromatic shift information below) for wavelengths ranging from 193nm to 1000nm. Manufactured with premier grades of Calcium Fluoride and Fused Silica, these infinite-conjugate triplets are perfect for imaging applications utilizing a wide spectrum of wavelengths. Typical uses include fluorescence research in which the emitted light is in the visible and near infrared regions of the spectrum or in dual-pass systems in which the same lens is used to illuminate the excitation material as well as collect the emissions from it. Elements are uncoated and mounted in a 30mm diameter aluminum housing. Antireflection coatings available, however a minimum order quantity will apply.

Full prescription information available.

Technical Information

 
Effective Focal Length EFL193 - 400nm400 - 1000nm193 - 1000nm
Chromatic ShiftRMS Spot SizeChromatic ShiftRMS Spot SizeChromatic ShiftRMS Spot Size
36mm1.8mm240μm0.4mm214μm2.2mm268μm
45mm1.1mm88μm0.3mm69μm1.3mm95μm
90mm2.0mm64μm0.6mm38μm2.5mm69μm
135mm1.6mm49μm0.6mm31μm2.1mm51μm
180mm1.4mm46μm0.6mm28μm1.9mm45μm

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