eo_logo
 
Product added to cart
TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

25mm Dia. x -50mm FL, NIR I Coated, Double-Concave Lens

×
Stock #49-551 3-4 days
×
Other Coating Options
×
Quantity Selector - Use the plus and minus buttons to adjust the quantity. +
£39.74
Qty 1-9
£39.74
Qty 10+
£35.70
Volume Pricing
Request Quote
Prices shown are exclusive of VAT/local taxes
Product Downloads

Specifications

General

Type:
Double-Concave Lens

Physical & Mechanical Properties

Diameter (mm):
25.00 +0.0/-0.025
Bevel:
Protective bevel as needed
Center Thickness CT (mm):
2.50
Center Thickness Tolerance (mm):
±0.10
Centering (arcmin):
<1
Clear Aperture CA (mm):
24.00
Edge Thickness ET (mm):
5.40

Optical Properties

Effective Focal Length EFL (mm):
-50.00
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
f/#:
2.00
Numerical Aperture NA:
0.25
Coating:
NIR I (600-1050nm)
Wavelength Range (nm):
600 - 1050
Back Focal Length BFL (mm):
-50.82
Coating Specification:
Ravg ≤0.5% @ 600 - 1050nm
Focal Length Specification Wavelength (nm):
587.6
Focal Length Tolerance (%):
±1
Radius R1=-R2 (mm):
-52.10
Surface Quality:
40-20
Damage Threshold, By Design: Damage threshold for optical components varies by substrate material and coating. Click here to learn more about this specification.
7 J/cm2 @ 1064nm, 10ns
Power (P-V) @ 632.8nm:
1.5λ
Irregularity (P-V) @ 632.8nm:
λ/4

Regulatory Compliance

RoHS 2015:
Certificate of Conformance:
Reach 235:

Product Details

TECHSPEC® NIR I Coated Double-Concave (DCV) Lenses are designed to have two inward curved surfaces and a negative focal length similar to Plano-Concave (PCV) lenses. These lenses can be used for balancing aberrations created by other lenses within a system due to their negative spherical aberration. Double-Concave (DCV) lenses are commonly used in a variety of applications including image reduction, beam expansion and telescopes. TECHSPEC® NIR I Coated Double-Concave (DCV) Lenses offer optimal performance in the 600nm to 1050nm range.  These lenses are also available Uncoated, VIS-EXT, MgF2VIS 0°VIS-NIRNIR I, or with NIR II AR coating options.

Technical Information

Frequently Purchased Together

Compatible Mounts

Title  Type Compare Stock Number   Price  Buy
25.0/25.4mm Optic Dia., SM1 Thin Mount, M4 Fixed #13-787 £16.57
Request Quote
  • 3-4 days
    ×
25.0/25.4mm Optic Dia., SM1 Thin Mount, 8-32 Fixed #13-788 £16.57
Request Quote
  • 3-4 days
    ×
25.0mm Optic Dia., Optic Mount Fixed #64-560 £25.93
Request Quote
  • 3-4 days
    ×
30mm Cage 25/25.4mm Diameter Thick Lens Mount Fixed #85-588 £36.34
Request Quote
  • 3-4 days
    ×
25.0/25.4mm Optic Dia., L-Slot Direct Mount Fixed #36-410 £56.52
Request Quote
  • 3-4 days
    ×
25.0/25.4mm Optic Dia., Side Flange Direct Mount Fixed #36-414 £56.52
Request Quote
  • 3-4 days
    ×
25mm Thick Inner Pair Optic Mounts Fixed #11-054 £56.52
Request Quote
  • 3-4 days
    ×
25.0/25.4mm Optic Dia., L-Slot and Rotation Direct Mount Adjustable - Rotary #36-411 £80.75
Request Quote
  • 3-4 days
    ×
25/25.4mm Diameter, C-Mount Thick Optic Mount Fixed #56-354 £83.30
Request Quote
  • 3-4 days
    ×
25.0/25.4mm Optic Dia., X-Y Translating Optic Mount Adjustable - Linear (XY) #62-956 £219.30
Request Quote
  • 3-4 days
    ×
25.0/25.4mm Optic Dia., X-Y-Z Translating Optic Mount Adjustable - Linear (XYZ) #62-959 £429.25
Request Quote
  • 3-4 days
    ×
25.0/25.4mm Optic Dia., 5 Axes Optical Mount Adjustable - Linear (XYZ) & Tip-Tilt #13-776 £599.25
Request Quote
  • Contact Us
    ×