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6.25mm Dia. x 7.5mm FL, VIS-NIR, Inked, Achromatic Lens

Name: 6.25mm Dia. x 7.5mm FL, VIS-NIR, Inked, Achromatic Lens
Brand: TECHSPEC
SKU: 49-948-INK
Price: S$128.10 SGD

Stock #49-948-INK 3 In Stock Other Coating Options

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S$128.10

Volume Pricing
Qty 1-5	S$128.10 each
Qty 6-25	S$102.90 each
Qty 26-49	S$96.60 each
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Specifications

General

Type:

Achromatic Lens

Physical & Mechanical Properties

Diameter (mm):

6.25 ±0.025

Clear Aperture CA (mm):

5.625

Centering (arcmin):

Center Thickness CT (mm):

6.00 ±0.10

Center Thickness CT 1 (mm):

5.00 ±0.05

Center Thickness CT 2 (mm):

1.00 ±0.05

Edge Thickness ET (mm):

4.61

Bevel:

Protective as needed

Optical Properties

Effective Focal Length EFL (mm):

7.50

Focal Length Tolerance (%):

±1

Back Focal Length BFL (mm):

4.45

Focal Length Specification Wavelength (nm):

587.6

Radius R₁ (mm):

5.60

Radius R₂ (mm):

-3.71

Radius R₃ (mm):

-11.34

N-BAF10 / N-SF57

Surface Quality:

40-20

f/#:

1.2

Numerical Aperture NA:

0.42

Coating:

VIS-NIR (400-1000nm)

Coating Specification:

R_abs ≤0.25% @ 880nm
R_avg ≤1.25% @ 400 - 870nm
R_avg ≤1.25% @ 890 - 1000nm

Power (P-V) @ 632.8nm:

1.5λ

Irregularity (P-V) @ 632.8nm:

λ/4

Wavelength Range (nm):

400 - 1000

Regulatory Compliance

RoHS 2015:

Compliant

Reach 209:

Compliant

Certificate of Conformance:

View

Need different specs or modifications?

Edmund Optics offers comprehensive custom manufacturing services for optical and imaging components tailored to your specific application requirements. Whether in the prototyping phase or preparing for full-scale production, we provide flexible solutions to meet your needs. Our experienced engineers are here to assist—from concept to completion.

Our capabilities include:

Custom dimensions, materials, coatings, and more
High-precision surface quality and flatness
Tight tolerances and complex geometries
Scalable production—from prototype to volume

Learn more about our custom manufacturing capabilities or submit an inquiry here.

Product Details

Designed for 0° Angle of Incidence
Less Than 0.25% Reflectance Per Surface @ 880nm
MgF₂ and VIS 0° Coated Achromats Also Available

TECHSPEC® VIS-NIR Coated Achromatic Lenses consist of two optical components cemented together to form an achromatic doublet. The doublet is computer optimized to correct for on-axis spherical and chromatic aberrations. TECHSPEC® VIS-NIR Coated Achromatic Lenses have visible/near-infrared broadband anti-reflection coating, which is specially optimized to yield maximum transmission (>99%) in the near-infrared. The achromatic lenses reduce reflection to less than 0.25 percent per surface at 880nm. Magnesium Fluoride coated and VIS 0° coated achromats are also available.