60 mm f/1.25 M34

60 mm f/1.25 M34

Umicore’s GASIR® infrared lenses have been developed for an easy fit with a wide range of camera cores. Our catalog IR lenses provide a cost-effective solution for high-resolution thermal imaging and sensing applications.

This passively athermalized infrared lens is suitable for use with 12 µm and 17 µm XGA detectors or smaller. Its low distortion makes it well-suited for thermal imaging applications, while its fast f/number ensures high performance over the entire field of view.


Optical Properties

Product number (HEAR)


Product number (DLC)


Focal length

60 mm



Transmission (HEAR)

> 94%

Transmission (DLC)

> 87%

Focus range

7 m to infinity with refocus of 0.5 mm


8 - 12 µm

Mechanical properties

Weight (HEAR)

211 g

Weight (DLC)

211 g

Interface thread


Back focal length*

9.6 mm

Flange back distance*

18.3 mm

value applicable with 1 mm Ge window (not included)

Environmental properties

Operating temperature

-40°C to + 80°C

Questions about the product?


      Umicore uses certain monitoring and tracking technologies such as cookies. These technologies are used in order to maintain, provide and improve our services on an ongoing basis, and in order to provide our web visitors with a better experience.

      By clicking on the "Accept all" button you agree to the use of these cookies while using the website. For further information regarding how we use cookies and other tracking technologies, please see section 11 of our website privacy notice

          Necessary cookies are essential and help you navigate our website. This helps to support security and basic functionality and are necessary for the proper operation of our website, so if you block these cookies we cannot guarantee your use or the security during your visit.

          Cookies that help us to understand the behaviour of users of our website. This allows us to continuously improve our website to provide the best information in support of our project aims. These cookies also help us understand the effectiveness of our website. For instance these cookies tell us which pages visitors go to most often and if they get error messages from web pages.

          Cookies that deliver content to you based on your interests, which are assumed from your browsing history. Most Targeting Cookies track users via their IP address and, thus, may collect some Personal Data. Personal Data collected by Targeting Cookies may be shared with third parties, such as advertisers.