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E-35-997 50mm Dia. x 200mm EFL, UV-VIS Coated, Near UV Achromatic Lens

Fosco Connect Part No.: E-35997

  • $ 385.00 or

E-35997 50mm Dia. x 200mm EFL, UV-VIS Coated, Near UV Achromatic Lens

Product UV-VIS Coating Curve

Product Drawing


Diameter (mm): 50.00 +0.0/-0.025
Effective Focal Length EFL (mm): 200.00
Focal Length Tolerance (%): ±1
Back Focal Length BFL (mm): 192.01
Focal Length Specification Wavelength (nm): 405.00
Clear Aperture CA (mm): 49.0
Centering (arcmin): <1
Center Thickness CT 1 (mm): 10.00
Center Thickness CT 2 (mm): 4.50
Center Thickness Tolerance (mm): ±0.2
Radius R1 (mm): 105.89
Radius R2 (mm): -92.87
Radius R3 (mm): -334.00
Edge Thickness ET (mm): 10.57
N-FK5 / F2HT
Surface Quality: 40-20
f/#: 4
Numerical Aperture NA: 0.13
Coating: UV-VIS (345-700nm)
Coating Specification:
Ravg ≤1.5% @ 345 - 700nm

Power (P-V) @ 632.8nm: 1.5λ
Irregularity (P-V) @ 632.8nm: λ/4
Bevel: Protective bevel as needed
Type: Achromatic Lens
Wavelength Range (nm): 345 - 700

Product Family Description

  • Excellent Transmission in 345 – 700nm Range
  • Ideal for use with NUV LEDs and Mercury Lamps
  • Low-Cost, Cemented Design

Our TECHSPEC® NUV Achromatic Lenses are specifically designed to minimize the spot size for polychromatic illumination in the 345 – 700nm region. Ideal for use in fluorescence applications, as well as for simple focusing of common UV light sources, such as Mercury Arc Lamps, UV LEDs, and Tripled Nd:YAG lasers. Our TECHSPEC® Near UV Achromatic Lenses feature a simple cemented design, and are an excellent alternative to air-spaced doublets and triplets for the UV. Lenses feature >90% transmission at 360nm and provide >50% transmission at 334nm.



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