Name: 25mm Dia. x 250mm FL, VIS-NIR Coated, UV Double-Convex Lens
Brand: TECHSPEC
SKU: 63-845
Price: C$219.63

25mm Dia. x 250mm FL, VIS-NIR Coated, UV Double-Convex Lens

UV Fused Silica Double-Convex (DCX) Lenses

Stock #63-845 In Stock Other Coating Options

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C$219.63

Qty 1-5
C$219.63

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C$175.11

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Specifications

General

Type:

Double-Convex Lens

Physical & Mechanical Properties

Diameter (mm):

25.00 +0.0/-0.025

Centering (arcmin):

Bevel:

Protective bevel as needed

Center Thickness CT (mm):

3.21 ±0.10

Edge Thickness ET (mm):

2.53

Clear Aperture CA (mm):

24.00

Optical Properties

Back Focal Length BFL (mm):

248.90

Effective Focal Length EFL (mm):

250.00

Coating:

VIS-NIR (400-1000nm)

Coating Specification:

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

Fused Silica (Corning 7980)

Surface Quality:

40-20

Power (P-V) @ 632.8nm:

1.5λ

Irregularity (P-V) @ 632.8nm:

λ/4

Radius R₁=-R₂ (mm):

228.73

f/#:

10.00

Focal Length Specification Wavelength (nm):

587.6

Focal Length Tolerance (%):

±1

Numerical Aperture NA:

0.05

Wavelength Range (nm):

400 - 1000

5 J/cm² @ 532nm, 10ns

Regulatory Compliance

RoHS 2015:

Compliant

Certificate of Conformance:

View

Reach 235:

Compliant

Product Details

Ideal for Imaging Applications
Minimize Aberrations Including Spherical and Coma
Precision Fused Silica Substrate

TECHSPEC® UV Fused Silica Double-Convex (DCX) Lenses, also referred to as bi-convex lenses, have two positive, symmetrical faces with equal radii on both sides. These lenses are generally recommended for finite imaging applications with a conjugate ratio (ratio between object distance and image distance) between 0.2 and 5. At a conjugate ratio of 1, aberrations such as spherical aberration, chromatic aberration, coma, and distortion are minimized or canceled due to the symmetric lens design. TECHSPEC® UV Fused Silica Double-Convex (DCX) Lenses have a precision fused silica substrate. These lenses are available uncoated or with UV-AR, UV-VIS, VIS-EXT, VIS-NIR, VIS 0°, NIR I, or NIR II coatings.

Technical Information

UV FS Transmission Curve

FUSED SILICA
	Typical transmission of a 3mm thick, uncoated fused silica window across the UV - NIR spectra. Click Here to Download Data
	Typical transmission of a 3mm thick fused silica window with MgF2 (400-700nm) coating at 0° AOI. The blue shaded region indicates the coating design wavelengh range, with the following specification: R_avg ≤ 1.75% @ 400 - 700nm (N-BK7) Data outside this range is not guaranteed and is for reference only. Click Here to Download Data
	Typical transmission of a 3mm thick fused silica window with UV-AR (250-425nm) coating at 0° AOI. The blue shaded region indicates the coating design wavelengh range, with the following specification: R_abs ≤ 1.0% @ 250 - 425nm R_avg ≤ 0.75% @ 250 - 425nm R_avg ≤ 0.5% @ 370 - 420nm Data outside this range is not guaranteed and is for reference only. Click Here to Download Data
	Typical transmission of a 3mm thick fused silica window with UV-VIS (250-700nm) coating at 0° AOI. The blue shaded region indicates the coating design wavelengh range, with the following specification: R_abs ≤ 1.0% @ 350 - 450nm R_avg ≤ 1.5% @ 250 - 700nm Data outside this range is not guaranteed and is for reference only. Click Here to Download Data
	Typical transmission of a 3mm thick fused silica window with VIS-EXT (350-700nm) coating at 0° AOI. The blue shaded region indicates the coating design wavelengh range, with the following specification: R_avg≤ 0.5% @ 350 - 700nm Data outside this range is not guaranteed and is for reference only. Click Here to Download Data
	Typical transmission of a 3mm thick fused silica window with VIS-NIR (400-1000nm) coating at 0° AOI. The blue shaded region indicates the coating design wavelengh range, with the following specification: R_abs≤ 0.25% @ 880nm R_avg≤ 1.25% @ 400 - 870nm R_avg≤ 1.25% @ 890 - 1000nm Data outside this range is not guaranteed and is for reference only. Click Here to Download Data
	Typical transmission of a 3mm thick fused silica window with VIS 0° (425-675nm) coating at 0° AOI. The blue shaded region indicates the coating design wavelengh range, with the following specification: R_avg≤ 0.4% @ 425 - 675nm Data outside this range is not guaranteed and is for reference only. Click Here to Download Data
	Typical transmission of a 3mm thick fused silica window with YAG-BBAR (500-1100nm) coating at 0° AOI. The blue shaded region indicates the coating design wavelengh range, with the following specification: R_abs ≤ 0.25% @ 532nm R_abs ≤ 0.25% @ 1064nm R_avg≤ 1.0% @ 500 - 1100nm Data outside this range is not guaranteed and is for reference only. Click Here to Download Data
	Typical transmission of a 3mm thick fused silica window with NIR I (600 - 1050nm) coating at 0° AOI. The blue shaded region indicates the coating design wavelengh range, with the following specification: R_avg≤ 0.5% @ 600 - 1050nm Data outside this range is not guaranteed and is for reference only. Click Here to Download Data
	Typical transmission of a 3mm thick fused silica window with NIR II (750 - 1550nm) coating at 0° AOI. The blue shaded region indicates the coating design wavelengh range, with the following specification: R_abs ≤ 1.5% @ 750 - 800nm R_abs ≤ 1.0% @ 800 - 1550nm R_avg≤ 0.7% @ 750 - 1550nm Data outside this range is not guaranteed and is for reference only. Click Here to Download Data

Accessories

Coating Curves

Custom

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.