Modified Standard Services
Coating
Edmund Optics offers extensive coating capabilities for optical components operating throughout the ultraviolet, visible, and infrared spectra. Coatings can be applied to uncoated substrates such as lenses, windows, or prism faces to modify performance characteristics or to create specialized optical components including beamsplitters and optical filters.
Available Coatings:
- Standard Anti-Reflection and High Reflection Coatings can be applied to uncoated substrates such as lenses, windows, prism faces.
- Broadband or Laser Line Designs available covering UV, Visible, and Infrared Wavelengths
- Additional coating types such as Transparent-Conductive Indium-Tin Oxide (ITO) or High Laser Damage Threshold Coatings also available.
Example: Plate Beamsplitters
Create a custom plate beamsplitter that has been designed to meet your application needs by selecting one of our stock plate beamsplitters and quickly modifying dimension, wavelength range, and splitting ratio.
Standard Plate Beamsplitters | Substrate | Wavelength Range | R/T Ratios |
Visible and NIR Plate Beamsplitters | N-BK7 | 400 - 700nm, 700 - 1100nm | 20/80, 30/70, 40/60, 50/50, 60/40, 70/30, 80/20 |
Plate Beamsplitters | Float Glass | 400 - 700nm | 25/75, 30/70, 40/60, 50/50, 70/30, 75/25 |
UV Plate Beamsplitters | UV Fused Silica | 250 - 450nm | 30/70, 50/50, 70/30 |
Example: Cube Beamsplitters
Using uncoated right angle prisms from stock, Edmund Optics can quickly assemble custom cube beamsplitters in sizes ranging from 5 to 75mm. Customized splitting ratios and wavelength ranges available.
Standard Cube Beamsplitters | Substrate | Wavelength Range | R/T Ratios |
Broadband Non-Polarizing Cube Beamsplitters | N-BK7 | 430 - 670nm, 720 - 1080nm, 1100 - 1620nm | 50/50 |
Broadband Polarizing Cube Beamsplitters | N-SF11 | 420 - 680nm, 700 - 1100nm | Reflect S / Transmit P |
Laser Line Polarizing Cube Beamsplitters | N-BK7 | 488nm, 532nm, 780nm, 850nm, 980nm, 1064nm | Reflect S / Transmit P |
Standard Cube Beamsplitters | N-BK7 | 400 - 700nm | 30/70, 50/50, 70/30 |
Example: Optical Filters
Need a customized filter? We can quickly and easily apply precision filter coatings to uncoated substrates. Bandpass Filters, Notch Filters, Dichroic and Edge Filters, Color Substrate Filters, and Neutral Density Filters can be modified to meet specific dimensional or performance requirements.
Filter Type | Wavelength Range | Measured Optical Density |
Single Substrate Bandpass Filters | 300nm - 2.0µm | ≥4, ≥6 |
Traditional Bandpass Filters | 193nm - 10.6µm | ≥3, ≥4 |
Notch Filters | 355nm - 1.064µm | ≥2, ≥4 |
Shortpass Filters | 400nm - 1.2µm | ≥2, ≥4 |
Dichroic Filters | 400nm - 1.2µm | N/A |
Colored Glass Bandpass Filters | 285nm - 1000nm | N/A |
Neutral Density Filters | UV, VIS, NIR, IR | 0.1 - 4.0 |
Filter Coating Capabilities | Typical Specifications/Tolerances | |
Dimensions (Diameter or Square) | 2-100nm | |
Substrates | All Glass Types | |
Spectral Range | 193nm - 14µm | |
Edge Steepness (T50% to OD > 4) | <0.5% | |
Spectral Edge Tolerance | <1% Deviation, <0.2% Special Cases | |
Neutral Density Tolerance | OD ±5% | |
Center Wavelength | ±1nm | |
Bandwidth | 1nm - Broadband | |
Transmission | >95%, Typical | |
Reflection | 0.1 - 99.5% | |
Polarization (S:P) | 10,000:1 | |
Laser Damage Threshold | Up to 20 J/cm² @ 20 ns Pulses | |
Durability | MIL-STD-810F, Section 507.4, MIL-C-48497A, Section 3.4.1 |
Quick Modifications to Component Dimensions
Customize lenses, mirrors, windows, beamsplitters, polarizers, and prisms in 2-3 weeks!
Diameter Reduction
Need an optic of a specific size? We can quickly and easily reduce the outer diameter of our off-the-shelf optics to meet your exact requirement.
Application Examples:
- Exact/precision fit an optic to your lens barrel
- Match filter diameters to your unique system
Typical Tolerances | |
Starting Part Size | 6 – 400mm |
Minimum Finished Diameter | 3.5mm |
Diameter Tolerance | ± 0.1mm |
Clear Aperture | 80% |
Beam Deviation | 3 - 5 arcmin |
Bevel Angle Tolerance | 45° ±15° |
Edge Chips | = 0.50mm |
Surface Quality | 80-50 |
Truncation
For design applications requiring a unique shape, a truncated lens, window, or mirror may be the best option. A truncation occurs when one or more straight cuts are applied to a round optic.
Application Examples:
- Remove excess material in weight-sensitive applications
- Custom mounting and fixturing
Typical Specifications | |
Starting Part Size | 5 – 300mm |
Minimum Finished Size | 3.0mm |
Maximum Thickness | 30mm |
Truncation Width Tolerance | ± 0.1mm |
Beam Deviation | 3 - 5 arcmin |
Bevel Angle Tolerance | 45° ±15° |
Edge Chips | = 0.50mm |
Surface Quality | 80-50 |
Linear Cut to Size
Need a custom sized or shaped optic? We can cut any optic to meet your needs. For thin, flat optics, we offer an economical and easily repeatable scribe and break process. For thicker optics, our expert team may use precision saw cuts to create the desired geometry. A linear cut to size is not limited to only flat optics; the process can also be applied to optics with curved surfaces. For instance, a PCX lens can be modified from having a circular diameter to having a square outer edge.
Application Examples:
- Remove excess material in weight-sensitive applications
- Custom mounting and fixturing
- Custom viewing windows
Typical Specifications | |
Starting Part Size | 5 – 300mm |
Minimum Finished Size | 3mm |
Maximum Thickness | 30mm |
Truncation Width Tolerance | ± 0.1mm |
Bevel Angle Tolerance | 45° ±15° |
Edge Chips | = 0.50mm |
Surface Quality | 80-50 |
Edge Blackening
Is stray light interfering with your system’s performance? Stray light is energy outside of the clear aperture of an optical system that scatters off of the edges of an optical or mechanical component and reaches the sensor in the form of noise. Because stray light contributes noise rather than signal, stray light is a common limiting factor in overall performance of multi-element systems. To minimize stray light, we can edge blacken an optic using an RoHS compliant, solvent-resistant ink and improve overall light throughput.
Application Examples:
- Improving image quality in imaging systems
- Maximizing light throughput in optical systems
Typical Specifications | |
Starting Part Size | 3 – 250mm |
Minimum Finished Diameter | +0.1mm added |
Clear Aperture | unchanged |
Core Drilling
Need to make dimensional adjustments to a filter? We can use a core drill to separate the filter substrate from the mount while retaining optical performance in the filter's central aperture. Once removed from the mount, the optic can be further modified with diameter reduction, truncation, or edge blackening.
Application Examples:
- Creating a custom diameter for a filter
- Filter mount removal
Typical Specifications | |
Starting Part Size | 6.5 – 50mm |
Minimum Finished Diameter | 3.0mm |
Diameter Tolerances | ± 0.5mm or better |
Clear Aperture | 80% |
Through-Hole
In certain specialty applications, a through-hole in an optic may be required. We can drill through-holes to help simplify the optic mounting process or to enable compatibility with specific application requirements.
Application Examples:
- Primary mirror of a reflective telescope
- Combining laser beams
- Custom mounting holes
Engraving
Need a specific marking, engraving, or serialization to help monitor and track prototype assemblies throughout the development process, brand components, or ease identification? We can help.
Application Examples:
- Apply a logo to the anodized aluminum barrel of an assembly
- Two nearly identical lenses being dropped into a lens tube? Engrave the edge with letters or numbers to indicate their order when assembling
- Create component position indicators along the surface of a breadboard
- Add a fiducial mark to a set of polarizers to indicate the direction of linear polarization
Quick Modifications to Optical Surfaces
Surface Improvement
When you need performance beyond what a standard off-the-shelf component provides, Edmund Optics offers an advanced surface finishing process to optimize the performance of your optical system. Our engineers have successfully demonstrated the ability to improve optical surfaces to better than λ/10 irregularity (at 632.8nm).
Application Examples:
- Improve imaging lens surfaces to potentially improve image quality
- Reduce surface irregularity of a lens for use in a high power laser system

Modification Service | Starting Part Size (range) | Surface Flatness (at 632.8mm) | Clear Aperture |
Surface Improvement | 15 - 60mm | λ/10 or better | Central 80% diameter |
Sphere to Asphere
A single aspheric lens can often outperform several spherical elements, particularly in fast optical systems (low f/#). Edmund Optics is pleased to offer this service to convert our spherical singlets to customized aspheric lenses by modifying one of our over 150 different stock PCX lens designs. Whether you have an aspheric lens already designed or only a preliminary setup, our engineers will work with you to help specify the right aspheres for your application. Learn more about using PCX lenses to create aspheres here.
Application Examples:
- Reduce lead time and cost by modifying a stock PCX lens rather than submitting a fully custom request
- Simplify imaging system prototyping by only producing the number of aspheres that you require
Modification Service | Starting Part Size (range) | Typical Surface Figure | Clear Aperture |
PCX to Asphere Conversion | 15 - 60mm | 1µm (P-V) | Central 80% diameter |
Sorting or Inspection
Do you know that Edmund Optics offers state-of-the-art metrology services to test and measure almost every specification found on our products? Whether you require an accurate interferometric measurement of an individual optical component or a spectrophotometric trace plotting transmittance versus wavelength, we are here to help. Require traceability for your application? Serialization and engraving services are also available.

Measurement Type | Equipment | Size Range | Measurement Limit |
Outer Diameter | Micrometer | 1 - 125mm | ±0.01mm |
Center Thickness | Drop Indicator | 0.1 - 50mm | ±0.01mm |
Lens Centering | Lens Scope | 5 - 75mm | within 2 arcsec, up to 500mm FL |
Interferogram* (Including Optical Flat Re-Certification) |
Interferometer | 5 - 100mm | λ/10 P-V @632nm |
Prism Interferogram* | Interferometer | 5 - 100mm | λ/10 P-V @632nm |
Cube Beamsplitter* | Interferometer | 5 - 100mm | λ/10 P-V @632.8nm |
Reflection Coating Scan | Spectrophotometer | 10 - 150mm | 175 - 3300nm, up to OD5, 0° to 65° AOI |
Transmission Coating Scan | Spectrophotometer | 10 - 150mm | 175 - 3300nm, up to OD5, 0° to 40° AOI |
Surface Roughness | Non-Contact White Light Interferometer | 1 - 150mm | 1 Å |
Additional Services
Mounting
Using a standard optical mount? Let us save you time and money by ensuring your optical element is properly mounted for quick and easy integration into your optical system. Choose from any of our 450 unique optical component mounts and we’ll secure either a stock or customized optic to meet your requirements. For example, select one of our S-, C- and T- Mounts designed for 3 – 40mm diameter lenses. We’ll mount the lens for you and you’ll quickly receive a customized lens assembly. It’s that simple! Looking for more complex optical assemblies? Contact us today to discuss your custom assembly needs.
Application Examples:
- Safely secure components
- Ease the integration of optical components into existing systems
- Reduce optic handling to minimize risk of component damage
Kitting
Need to purchase multiple components for your system? To make things easier for you, we can create a custom bill of materials so that you only have to purchase a single stock number rather than each individual part. Better yet, the custom bill of materials ensures that all products are delivered together.
Application Examples:
- Lens assembly components
- Fluorescence filter sets
- Instrument bill of component materials
Custom Packaging
Have specific packaging requirements? Let us help. Our team can ensure that your products are packed and delivered based on your specific requirements.
Application Examples:
- Barcode labeling
- Add your company name, part number, or other indentification
- Custom containers
Serialization
If you have traceability concerns, we can engrave or serialize parts according to your requirements.
Inspection Reports
By request, our metrology team can provide inspection reports that document the exact performance of your optic. For more information on our metrology services, please visit the Metrology section of our modified standard services.
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