Optical Filters FAQs

Here we have provided comprehensive lists of commonly asked questions regarding our Semrock optical filters and related applications. This information is designed to support your inquiries, but if you don’t find the answers you are looking for we encourage you to contact us for further assistance.

Please use the sort buttons in the left navigation to navigate between questions and answers that are specific to Optical Imaging Systems, Fluidics, Cameras, Microfluidics, our Webstore, and Engineering Partnership.


How to custom size a filter?

IDEX Health & Science offers custom sizing of most Semrock brand catalog filters right on our website. Whether you need an unhoused / unmounted round or rectangular filter, or the filter mounted into one of our standard-size aluminum housings, use our custom sizing tool to calculate the price for the quantity you require and part number and add it to your cart to purchase.

Simply input your required dimensions:

  • Whole millimeter sizes between 10 to 40 mm for round parts are available using the customer part builder. In addition, you can choose 12.5, 12.7, 21.8, 23.3, 25.4, 50 and 50.8mm. IDEX Health & Science also carries standard-size aluminum housings for the following dimensions: 12.5mm, 25mm, 25mm Sutter Threaded Rings, 32mm, and 50mm.
  • For rectangular part, it is ranging from 5mm to 55mm. Please note that the maximum ratio of dimensions for custom parts is 5:1.

Each filter which is available for custom sizing lists the dimensional range which can be accommodated for that filter on the product page. The substrate thickness and tolerance will be the same as for the standard size part for the filter of interest, simply click on the Specifications tab for details.

Need to have that 31.4mm unmounted diameter? We can accommodate that as well, please fill out the custom request form and we will get back to you as soon as possible. Our inside sales team will quote the lead time with your order acknowledgement (typically four weeks).

optical filters custom sizing tool screenshot