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Purchasing Advisor for Diaphragms

Find all you need for professionally buying diaphragms: an interactive tool with a comprehensive and trustworthy directory of suppliers and expert guidance for a structured decision process with scientific and technical background information.

Top-level product category: icon optical components and devices

More general product categories: optical apertures

Optical diaphragms are thin devices with a central aperture that may be circular or non-circular, and fixed or adjustable. They are used to control the amount of light passing through an optical system and are commonly found in photography and various scientific instruments.

Interactive Purchase Decision Tool

Purchasing high-value photonics products is a substantial responsibility. Using a structured decision-making process and high quality supplier data helps a lot:

See also:

How Responsible Purchase Decisions for Expensive Goods Like Lasers Are Done Explanations on this purchasing tool

Go through the process:

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 diaphragms beam shapers

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 purchase.

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 diaphragms. 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 diaphragms. 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:

4. Document the decision process

It is essential to document your purchasing process, not only its result (chosen supplier):

  • You will find it easier next time.
  • If something goes wrong, you can defend your decision by showing that you properly considered all important aspects. Or you see what needs to be done better next time.

Our interactive tool makes it easy: Fill out the form, and in the end print it to a PDF. Note that the document will show all sections (including those not currently shown on the screen), while omitting some irrelevant details such as the page navigation.

Suppliers for Diaphragms

4 suppliers for diaphragms are listed in the RP Photonics Buyer's Guide, out of which two present their product descriptions and images. Both manufacturers and distributors can be registered.

Suppliers with Advertising Package

presenting their product descriptions

Let the light be always with you!

Geola Digital Ltd.
Naugarduko 41
LT-03227 Vilnius
Lithuania
Profile page  Website  
diaphragms

The MID14-24 is precise motorized iris diaphragm, which is adjustable either mechanically or on a PC with an intuitive graphical user interface. Our unique design has aluminum blades forming a square diaphragm, always remaining centered to an internal SM1–threaded hole during size tuning. The adjustment step size is ≈10 µm.

The square Iris diaphragm is also designed to be compatible for either stand-alone (MID14-24) or 60 mm standard (for example Thorlabs) Cage System (MID14-24C).

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)!

diaphragms

Knight Optical have an extensive range of iris diaphragms with steel leaves and housed in blackened brass body. Our catalogue diaphragms are available with a minimum aperture of 0.6 mm up to a maximum 225 mm aperture. Custom diaphragms are also available upon request.

Product-specific web page

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Other Suppliers

Kvant Lasers s.r.o.
Slovakia
STANDA Ltd.
Lithuania

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.