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TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

25mm Dia -0.25λ Aberration, Spherical Aberration Plate

Spherical Aberration Compensation Plates

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Stock #66-756 10 to 12 days
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₹41,810
Qty 1+
₹41,810
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Specifications

General

Type:
Specialty Window

Physical & Mechanical Properties

Bevel:
Protective as needed
Clear Aperture (%):
>85
Clear Aperture CA (mm):
21.25
Diameter (mm):
25.00 +0.00/-0.25
Thickness (mm):
4.00 ±0.20
Edges:
Fine Ground
Knoop Hardness (kg/mm2):
610
Parallelism (arcmin):
<1
Poisson's Ratio:
0.206
Young's Modulus (GPa):
82

Optical Properties

Aberration:
-0.25λ ±λ/16 @ 587nm
Abbe Number (vd):
64.17
Coating:
Uncoated
Index of Refraction (nd):
1.516
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Surface Quality:
60-40
Wavelength Range (nm):
350 - 2200

Material Properties

Coefficient of Thermal Expansion CTE (10-6/°C):
7.1 (-30 to +70°C)
8.3 (+20 to +300°C)
Density (g/cm3):
2.51

Regulatory Compliance

RoHS:
Certificate of Conformance:

Product Details

  • Precision N-BK7 Substrate
  • Optimized for Use in Collimated Light with Small Fields of View
  • Transmitted Wave Front Accurate to λ/16

Many optical systems experience some level of spherical aberrations which result in a loss of image quality and overall system performance. Our line of TECHSPEC® Spherical Aberration Compensation Plates are designed to compensate and correct known amounts of spherical aberration at the specified wavelengths. The aberration plates should be used in collimated space and placed near a pupil. They are excellent for correcting spherical aberrations in systems that have small fields of view.

Spherical Aberration Compensation Plates can be combined to induce the desired amount of compensatory spherical aberration. Negative sign plates create over corrected spherical aberration. Positive plates create under corrected spherical aberration.

Note: The arrow on the spherical aberration compensation plates points in the direction of light travel.

Technical Information

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.

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