My Account
- Log In
  
  New to Edmund Optics^®? Register.
0
Cart

TECHSPEC^® components are designed, specified, or manufactured by Edmund Optics. Learn More

6mm Dia. x -12mm FL, NIR II, Inked, Double-Concave Lens

Name: 6mm Dia. x -12mm FL, NIR II, Inked, Double-Concave Lens
Brand: TECHSPEC
SKU: 68-007-INK
Price: ₹4,220

Stock #68-007-INK 17 to 22 D=days Other Coating Options

- +

₹4,220

Qty 1-9
₹4,220

Qty 10+
₹3,806

Volume Pricing
Request Quote

+ Add to Saved List
Create an account or log in to access saved list

Compare

Get Product Downloads

Specifications
Learn More
Accessories
Technical Information
Resources
Related Products
Compatible Mounts
Imaging Lens Selector

Diameter (mm):

6.00 ±0.025

Effective Focal Length EFL (mm):

-12.00

N-BK7

f/#:

2.00

Numerical Aperture NA:

0.25

Coating:

NIR II (750-1550nm)

Type:

Double-Concave Lens

Wavelength Range (nm):

750 - 1550

Back Focal Length BFL (mm):

-12.33

Center Thickness CT (mm):

1.00

Center Thickness Tolerance (mm):

±0.05

Centering (arcmin):

Clear Aperture CA (mm):

5.40

Coating Specification:

R_abs ≤1.5% @ 750 - 800nm
R_abs ≤1.0% @ 800 - 1550nm
R_avg ≤0.7% @ 750 - 1550nm

Edge Thickness ET (mm):

1.59

Focal Length Specification Wavelength (nm):

587.6

Focal Length Tolerance (%):

±1.00

Radius R₁=-R₂ (mm):

-12.57

Surface Quality:

40-20

8 J/cm² @ 1064nm, 10ns

Power (P-V) @ 632.8nm:

1.5λ

Irregularity (P-V) @ 632.8nm:

λ/4

Regulatory Compliance

RoHS:

Compliant

Certificate of Conformance:

View

Product Family Description

AR Coated to Provide <0.7% Reflectance per Surface for 750 - 1550nm
Double-Concave Lenses Have Two Inward Curved Surfaces and a Negative Focal Length
Used for Image Reduction and to Spread Light
Various Coating Options: Uncoated, VIS-EXT, MgF₂, VIS 0°, VIS-NIR, and NIR I

TECHSPEC® NIR II 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 II Coated Double-Concave (DCV) Lenses offer optimal performance in the 750nm to 1550nm range. These lenses are also available in Uncoated, VIS-EXT, MgF₂, VIS 0°, VIS-NIR, or with NIR I AR coating options.