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9mm Dia. x -12mm FL, MgF₂ Coated, Double-Concave Lens

Name: 9mm Dia. x -12mm FL, MgF 2 Coated, Double-Concave Lens
Brand: TECHSPEC
SKU: 48-936
Price: ₹3,002

Stock #48-936 10 to 12 days Other Coating Options

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₹3,002

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₹3,002

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₹2,697

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Specifications
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Diameter (mm):

9.00 +0.0/-0.025

Effective Focal Length EFL (mm):

-12.00

N-SF11

f/#:

1.33

Numerical Aperture NA:

0.38

Coating:

MgF₂ (400-700nm)

Type:

Double-Concave Lens

Wavelength Range (nm):

400 - 700

Back Focal Length BFL (mm):

-12.41

Bevel:

Protective bevel as needed

Center Thickness CT (mm):

1.50

Center Thickness Tolerance (mm):

±0.05

Centering (arcmin):

Clear Aperture CA (mm):

8.1

Coating Specification:

R_avg ≤1.75% @ 400 - 700nm

Edge Thickness ET (mm):

2.43

Focal Length Specification Wavelength (nm):

587.6

Focal Length Tolerance (%):

±1

Radius R₁=-R₂ (mm):

-19.16

Surface Quality:

40-20

10 J/cm² @ 532nm, 10ns

Power (P-V) @ 632.8nm:

1.5λ

Irregularity (P-V) @ 632.8nm:

λ/4

Regulatory Compliance

RoHS 2015:

Compliant

Certificate of Conformance:

View

Reach 235:

Compliant

Product Family Description

AR Coated to Provide <1.75% Reflectance per Surface for 400 - 700nm
Designed for 0° Angle of Incidence
Various Coating Options: Uncoated, VIS-EXT, VIS 0°, VIS-NIR, NIR I, and NIR II

TECHSPEC® MgF₂ 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® MgF₂ Coated Double-Concave (DCV) Lenses are ideal for broadband applications. These lenses are also available in Uncoated, VIS-EXT, VIS 0°, VIS-NIR, NIR I, or with NIR II AR coating options.