A practical laser fit
- Custom outer profiles, datums, mounting features, and aperture locations
- Prototype iterations, qualification lots, and multiple part variants
- Thin metal apertures with drawing-defined edge and inspection requirements
Custom Pinhole Apertures
Laser-machined metal pinhole apertures for spatial filtering, optical alignment, imaging, and instrument development. We make the opening around your specified diameter, material, thickness, mounting interface, edge condition, and inspection requirements.
- Single pinholes, arrays, and mixed aperture patterns
- Opening location and surrounding geometry made to drawing
- Prototype, validation lots, and repeat production
Process fit
When Laser Machining Is the Right Fit
Laser processing is useful when you need a custom profile, drawing revision, pinhole array, or a prototype-to-repeat-production path without a dedicated hard tool.
When another process may be better
- Sub-feature requirements beyond the practical laser process window
- Extreme aspect-ratio openings or patterns formed directly on optical substrates
- Stable ultra-high-volume designs where specialist tooling may be more economical
Start with the critical details
What to Specify for a Pinhole Aperture
The opening is only one part of the component. Defining its location, material, thickness, and edge condition together makes the part easier to manufacture and inspect for the real optical assembly.
Opening diameter
Share the target opening and the tolerance that matters to the optical function.
Position and centering
Define the pinhole location from the outside profile, mounting holes, holder, or another drawing datum.
Material and thickness
Choose the substrate with the required opacity, stiffness, heat behavior, and surrounding environment in mind.
Edge and surface condition
Identify the aperture direction, acceptable burr or taper condition, and any low-reflectance surface requirement.
We manufacture the specified aperture component. System-level transmission, diffraction, stray-light suppression, and alignment performance should be validated in the finished optical assembly.
Opening quality
Control Edge, Taper, and Surface Condition
Optical components are sensitive to the physical edge around the opening. The material, thickness, process, and desired surface condition should be reviewed together.
- Edge and burr condition. Define what is acceptable at the aperture edge, especially where scatter or assembly handling is a concern.
- Taper and direction. Identify whether the aperture is used from one side or both, and whether the effective opening needs to be defined from a particular face.
- Low-reflectance surface needs. Share any blackening or stray-light requirement before the material and process route are selected.
- Flatness and handling. Thin parts need the right fixturing, packaging, and inspection approach to remain practical in the next assembly step.
Material selection
Choose the Material and Thickness
The substrate has to work with the optical path and the surrounding mechanical environment. We review material and thickness with the opening geometry instead of treating them as separate choices.
Stainless Steel
A practical material for many optical apertures where a durable, opaque metal part and a stable outer profile are needed.
Copper and Specified Metals
Useful when thermal behavior, conductivity, a particular surface treatment, or a specified optical assembly material matters.
Thin Foil and Custom Thicknesses
The material thickness is reviewed with the opening, edge condition, flatness need, and how the part will be mounted.
Applications
Where Pinhole Apertures Are Used
Custom pinhole components are designed around the light-control, location, and mounting requirements of the complete instrument.
Laser Spatial Filtering
Pinhole openings that support beam cleanup and controlled light passage in laboratory and production laser systems.
Imaging and Microscopy
Field stops, confocal apertures, and light-control features for imaging, measurement, and optical test assemblies.
Beam Profiling and Alignment
Reference apertures for optical alignment, beam conditioning, calibration fixtures, and instrument development.
Sensors and Scientific Instruments
Custom light-control components for detectors, spectrometers, photonics hardware, and compact optical modules.
Inspection
Inspect the Features That Matter to Your Assembly
Inspection is agreed around the critical opening and the way the part locates in your system—not a generic checklist detached from the drawing.
Opening size
Check the aperture dimension against the agreed specification.
Feature location
Verify the pinhole position from the drawing datums or surrounding mounting features.
Edge condition
Review the requested burr, taper, recast, and cleanliness condition for the intended optical path.
Part interface
Confirm outer profile, material, thickness, and mounting features before repeat production.
Answers
Pinhole Aperture FAQs
How small can a pinhole aperture be?
The practical minimum depends on the material, thickness, aspect ratio, required edge condition, and inspection method. Send the target opening and drawing so we can review the appropriate process rather than quoting a universal minimum.
Can you make a pinhole to fit our holder?
Yes. Include the holder, carrier, mounting holes, outer profile, and the datum from which the pinhole must be located. We will review the part as an assembly interface, not only as an isolated hole.
Can you control taper through the aperture?
If taper or directionality matters, identify the entrance side, exit side, effective opening, and acceptance requirement in the drawing. The achievable result depends on material and thickness.
Can you make pinhole arrays or mixed aperture patterns?
Yes. We can review repeated pinhole patterns, variable diameters, and combinations of pinholes with slits or other laser-cut optical features.
Can you provide blackened or low-reflectance surfaces?
Specify the optical-side finish and stray-light requirement. We will review a suitable material and finishing route with the geometry; the final optical performance should be validated in the complete system.
When is laser machining not the best process?
Very small sub-feature requirements, extreme aspect ratios, or features made directly on an optical substrate may be better suited to lithography, electroforming, or another specialist process. We will flag that during review.
Custom pinhole apertures
Start Your Pinhole Aperture Project
Send your opening, material, thickness, location, edge requirement, and quantity. We will review the part against the needs of your optical assembly.