Name: 9.0mm Dia. x -9 FL, YAG-BBAR, Plano-Concave Lens
Brand: TECHSPEC
SKU: 21-306
Price: €41,75

9.0mm Dia. x -9 FL, YAG-BBAR, Plano-Concave Lens

Diameter (mm):

9.00

Effective Focal Length EFL (mm):

-9.00

N-SF11

f/#:

1.00

Numerical Aperture NA:

0.50

Coating:

YAG-BBAR (500-1100nm)

Type:

Plano-Concave Lens

Wavelength Range (nm):

500 - 1100

Back Focal Length BFL (mm):

-10.21

Bevel:

Protective bevel as needed

Center Thickness CT (mm):

2.25 ±0.05

Centering (arcmin):

Clear Aperture CA (mm):

8.1

Coating Specification:

R_abs <0.25% @ 532nm
R_abs <0.25% @ 1064nm
R_avg <1.0% @ 500 - 1100nm

Edge Thickness ET (mm):

3.63

Focal Length Specification Wavelength (nm):

587.6

Focal Length Tolerance (%):

±1

Radius R₁ (mm):

-7.07

Surface Quality:

40-20

Typical Energy Density Limit:

5 J/cm² @ 532nm, 10ns

Power (P-V) @ 632.8nm:

1.5λ

Irregularity (P-V) @ 632.8nm:

λ/4

Regulatory Compliance

RoHS 2015:

Compliant

Reach 224:

Compliant

Certificate of Conformance:

View

Product Family Description

Negative Focal Lengths for Beam Expansion or Light Projection Applications
Optimized for R<0.25% at both 532nm and 1064nm
AR Coated to Provide <1.0% Reflectance per Surface for 500 - 1100nm
Various Coating Options: Uncoated, MgF₂, VIS 0°, VIS-NIR, NIR I, NIR II, and 1064nm V-Coat

TECHSPEC® YAG-BBAR Coated Plano-Concave (PCV) Lenses consist of one flat surface and one inward curved surface. This shape factor of lens results in a negative focal length. Plano-Concave (PCV) lenses are commonly used in a variety of applications including image reduction, beam expansion and telescopes. TECHSPEC® YAG-BBAR Coated Plano-Concave (PCV) Lenses feature less than 0.25% reflection at common Nd:YAG laser wavelengths of 532nm and 1064nm.