Diameter (mm):

25.00 ±0.025

Effective Focal Length EFL (mm):

-25.00

N-SF11

f/#:

1.00

Numerical Aperture NA:

0.50

Coating:

NIR II (750-1550nm)

Type:

Double-Concave Lens

Wavelength Range (nm):

750 - 1550

Back Focal Length BFL (mm):

-25.69

Center Thickness CT (mm):

2.50

Center Thickness Tolerance (mm):

±0.10

Centering (arcmin):

Clear Aperture CA (mm):

24.00

Coating Specification:

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

Edge Thickness ET (mm):

6.05

Focal Length Specification Wavelength (nm):

587.6

Focal Length Tolerance (%):

±1.00

Radius R₁=-R₂ (mm):

-39.78

Surface Quality:

40-20

Typical Energy Density Limit:

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, MgF₂, VIS 0°, VIS-NIR, and NIR I

Double-Concave (DCV) Lenses have two inward curved surfaces and a negative focal length. They are used for image reduction and to spread light.

Title	Type	Stock Number	Price	Buy
25/25.4mm Diameter, T-Mount Thick Optic Mount	Fixed	#52-293	S$89.70 Qty 5+ S$79.65 Request Quote	3-5 days ×
25/25.4mm Diameter, C-Mount Thick Optic Mount	Fixed	#56-354	S$133.65 Qty 5+ S$118.50 Request Quote	3-5 days ×
25.0/25.4mm Optic Dia., X-Y Translating Optic Mount	Adjustable - Linear (XY)	#62-956	S$379.50 Qty 5+ S$360.60 Request Quote	3-5 days ×
25.0/25.4mm Optic Dia., X-Y-Z Translating Optic Mount	Adjustable - Linear (XYZ)	#62-959	S$744.00 Qty 5+ S$669.60 Request Quote	3-5 days ×
25.0mm Optic Dia., Optic Mount	Fixed	#64-560	S$66.00 Qty 10+ S$59.40 Request Quote	3-5 days ×
30mm Cage 25/25.4mm Diameter Thick Lens Mount	Fixed	#85-588	S$58.50 Request Quote	3-5 days ×
25.0/25.4mm Optic Dia., L-Slot Direct Mount	Fixed	#36-410	S$94.50 Request Quote	3-5 days ×
25.0/25.4mm Optic Dia., L-Slot and Rotation Direct Mount	Adjustable - Rotary	#36-411	S$136.50 Request Quote	3-5 days ×
25.0/25.4mm Optic Dia., Side Flange Direct Mount	Fixed	#36-414	S$94.50 Request Quote	3-5 days ×
25mm Thick Inner Pair Optic Mounts	Fixed	#11-054	S$91.50 Qty 5+ S$85.50 Request Quote	3-5 days ×
25.0/25.4mm Optic Dia., SM1 Thin Mount, M4	Fixed	#13-787	S$28.50 Qty 5+ S$27.15 Request Quote	3-5 days ×
25.0/25.4mm Optic Dia., SM1 Thin Mount, 8-32	Fixed	#13-788	S$28.50 Qty 5+ S$27.15 Request Quote	3-5 days ×
25.0/25.4mm Optic Dia., 5 Axes Optical Mount	Adjustable - Linear (XYZ) & Tip-Tilt	#13-776	S$1,036.50 Qty 5+ S$984.90 Request Quote	3-5 days ×

25mm Dia. x -25mm FL, NIR II, Inked, Double-Concave Lens

Regulatory Compliance

Product Family Description