Buyer's Guide … the one with the Encyclopedia!

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Buying Optical Apertures

Top-level product category: icon optical components and devices

More specific product categories: diaphragms, pinholes, slits

Various types of optical apertures are required for optical devices like monochromators, sensors, imagers, mode cleaners, and lasers. Examples include optical slits, pinholes, irises, and diaphragms.

Making Good Purchase Decisions

As the most professional photonics purchasing portal, RP Photonics helps you to not only to find all relevant suppliers (not limited to our advertisers), but also to make good purchasing decisions.

NEW: Structured Decision Process

Purchasing involves a lot of responsibility. We recommend that you apply best practice by using the following structured process: Go through the following expandable sections, complete the form and finally come to a purchase decision. You can then print that to a PDF for documenting the process.

Our article on best practices for purchasing and another one explaining this tool give you valuable insights.

1. Understand the technical background

It is important to sufficiently understand the technology before buying.

Use the comprehensive learning resources of RP Photonics:

encyclopedia article optical apertures mode cleaners

If you need personal help, contact RP Photonics to get technical consultancy.

2. Define your requirements

It is essential to fully understand and clearly define your requirements before you buy.

We recommend that you develop a list of clear specifications according to your specific needs, against which you can later check the suitability of found product offers:

To help you, we have already listed some aspects we recommend you consider when buying optical apertures. Of course, there may be other aspects that are relevant to your specific case.

This list is for your own preparation, and can later (possibly in modified form) be used for quotation requests to suppliers.

Otherwise, you will need to talk to your technical colleagues.

If you cannot sufficiently clarify your requirements, you may want to get technical consultancy from RP Photonics.

You find these buttons in the supplier list below or under "3. Find suitable suppliers".

3. Find suitable suppliers

We suggest three steps:

  • Below, you can find our list of suppliers for optical apertures. Use the checkboxes to mark possibly suitable suppliers.
  • The selected suppliers will appear below this list, along with your list of specifications. You can then indicate which specifications they meet according to your research. (You should finalize your specifications before doing this.)
  • Based on the results, you can finally choose a supplier that is hopefully a good enough fit.

Selected suppliers:

(none so far)

Decision

The most suitable supplier you found:

Comments, e.g. reasons for your choice, or things which still need to be checked:

Suppliers for Optical Apertures

16 suppliers for optical apertures are listed in the RP Photonics Buyer's Guide, out of which 2 present their product descriptions. Both manufacturers and distributors can be registered.

Suppliers with Advertising Package

presenting their product descriptions

We like it black

ACM Coatings GmbH (subsidiary of Acktar Ltd.)
Jakobsring 3
06618 Naumburg (Saale)
Germany
Profile page  Website  

See us at LASER World of Photonics 2025 in Munich, June 24–27 (booth B1.229)!

optical apertures

Acktar blackened pinholes, air slits etc. are ideal for light aperture applications where back reflections from light sources are a concern. These optical apertures feature stainless steel substrates coated with Acktar Black™ coating, which is a super black, low reflectance coating used in wavelengths from the extreme ultraviolet (EUV) to the short-wave infrared (SWIR). This wide-band coating is stable in temperatures up to 380 °C and has no particulation from use. Acktar Blackened optical apertures can be coated on both sides, including the slit edges if needed, and are available unmounted or mounted for increased mechanical stability.

Product-specific web page

Bringing quality into focus

Knight Optical (USA) LLC
1130 Ten Rod Road
Suite D102
North Kingstown
Rhode Island 02852
United States
Profile page  Website  

See the company profile page for additional contact information.

See us at LASER World of Photonics 2025 in Munich, June 24–27 (booth A3.533)!

optical apertures

Offering excellent control over beam shape and size, Knight Optical's apertures are available in two grades: standard and precision. Choose from a comprehensive stock range or customise your apertures to meet the exact needs of your project. Our series of apertures comprises pinholes, slits and iris diaphragms in sprung steel leaves or stainless steel leaves.

Product-specific web page

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Other Suppliers

CASIX Inc.
China
Profile page  Website  
DIY-Optics GmbH
Switzerland
Profile page  Website  
Ealing Catalog
United States
FISBA AG
Switzerland
Profile page  Website  
Mikrop AG
Switzerland
Newport Corporation
United States
Ocean Opto Co., Ltd
China
Optico AG
Switzerland
Profile page  Website  
OptoSigma
United States
OWIS GmbH
Germany
Profile page  Website  
Schneider Kreuznach
Germany
STANDA Ltd.
Lithuania
Tian Cheng Optic Co., Ltd.
China
Vision Lasertechnik für Forschung und Industrie GmbH
Germany

If any displayed information is incorrect (e.g., a listed supplier does not offer such products) or legally problematic, please notify RP Photonics so that the problem can be solved.



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