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Precision Apertures
We manufacture high-precision electroformed foil and chrome-on-glass pinholes and slits for demanding optical applications.
Our metal foil apertures are produced using advanced electroforming techniques, delivering exceptional edge definition and outstanding straightness or roundness — critical characteristics for precise beam shaping and minimising unwanted light scatter.
Our chrome-on-glass products are fabricated using vacuum-deposited chrome and photolithographic masking processes, enabling the production of finer features and more complex aperture patterns.
Electroforming provides superior dimensional accuracy, sharp edge quality, and repeatability, making it ideal for high-performance optical systems.
A significant part of our business involves the manufacture of custom apertures for applications including spectrometers, collimators, MTF testing systems, augmented reality devices, space telescopes, and many other advanced optical instruments. We welcome bespoke enquiries — please send us your specifications.
Download our Precision Apertures brochure for full details.
You can also explore our dedicated apertures website and online shop at www.graticulesapertures.com
| Id | Code | Description | Options | Price | Quantity | Basket | Details |
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| 1 | 04D00982 | LW25 25μm x 5mm Rectangular Slit Unmounted | £156.09 |
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| 2 | 04D00983 | LW50 50μm x 5mm Rectangular Slit Unmounted | £133.15 |
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| 3 | 04D00984 | LW100 100μm x 7.5mm Rectangular Slit Unmounted | £133.15 |
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| 4 | 04D00985 | LW250 250μm x 7.5mm Rectangular Slit Unmounted | £133.15 |
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| 5 | 04D00986 | LW500 500μm x 7.5mm Rectangular Slit Unmounted | £133.15 |
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| 6 | 04D00987 | LW1000 1000μm x 7.5mm Rectangular Slit Unmounted | £133.15 |
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| 7 | LG5 | LG5 5μm x 10mm Rectangular Slit on Glass | £171.25 |
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| 8 | 04D00980 | LW5 5μm x 3mm Rectangular Slit Unmounted | £168.80 |
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| 9 | LG10 | LG10 10μm x 10mm Rectangular Slit on Glass | £171.25 |
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| 10 | 04D00981 | LW10 10μm x 3mm Rectangular Slit Unmounted | £156.09 |
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| 11 | LG25 | LG25 25μm x 10mm Rectangular Slit on Glass | £171.25 |
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| 12 | LG100 | LG100 100μm Rectangular Slit on Glass | £171.25 |
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| 13 | LG200 | LG200 200μm Rectangular Slit on Glass | £171.25 |
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| 14 | C100 | C100 100μm Circular Aperture | £87.28 |
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| 15 | C1 | C1 1μm Circular Aperture | £144.60 |
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| 16 | L2 | L2 2μm x 1mm Rectangular Slit | £168.80 |
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| 17 | C2 | C2 2μm Circular Aperture | £135.71 |
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| 18 | L5 | L5 5μm x 1mm Rectangular Slit | £156.09 |
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| 19 | C5 | C5 5μm Circular Aperture | £135.71 |
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| 20 | L10 | L10 10μm x 1.5mm Rectangular Slit | £137.13 |
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| 21 | CG05 | CG05 Chrome on Glass Pinhole, 5um diameter | £171.25 |
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| 22 | C10 | C10 10μm Circular Aperture | £120.62 |
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| 23 | L25 | L25 25μm x 1.5mm Rectangular Slit | £120.62 |
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| 24 | CG10 | CG10 Chrome on Glass Pinhole, 10um diameter | £171.25 |
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| 25 | C25 | C25 25μm Circular Aperture | £98.75 |
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| 26 | L50 | L50 50μm x 2mm Rectangular Slit | £120.62 |
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| 27 | CG20 | CG20 Chrome on Glass Pinhole, 20um diameter | £171.25 |
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| 28 | C50 | C50 50μm Circular Aperture | £98.75 |
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| 29 | L100 | L100 100μm x 2mm Rectangular Slit | £120.62 |
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| 30 | CG25 | CG25, 25um Chrome on Glass Pinhole | £171.25 |
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| 31 | C250 | C250 250μm Circular Aperture | £87.28 |
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| 32 | L250 | L250 250μm x 2mm Rectangular Slit | £120.62 |
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| 33 | CG40 | CG40, Chrome on Glass Pinhole, 40um | £171.25 |
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| 34 | C1000 | C1000 1mm Circular Aperture | £87.28 |
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| 35 | CG50 | CG50, 50um Chrome on Glass Pinhole | £171.25 |
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| 36 | CG100 | CG100, 100um Chrome on Glass Pinhole | £171.25 |
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| 37 | CG200 | CG200, 200um Chrome on Glass Pinhole | £171.25 |
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| 38 | CG250 | CG250, 250um Chrome on Glass Pinhole | £171.25 |
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| 39 | CG500 | CG500, 500um Chrome on Glass Pinhole | £171.25 |
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| 40 | CG1000 | CG1000, 1.0mm Chrome on Glass Pinhole | £171.25 |
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| 41 | CG2000 | CG2000, 2.0mm Chrome on Glass Pinhole | £171.25 |
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