Till Liepmann
 (posted 2020-09-17 16:30:03.693)
Lens mount needs instructions on proper installation of lens. Use of this mount resulted in increased costs and difficulty due to the lens being loose as a result of off center initial lens position. Ring retainer tightened, but it's not possible to tell if lens is centered due to the ring covering from view the lens edge and mount barrel. Retaining ring contacts lens and tightens normally, but the lens isn't centered. Further, in this situation, thermal cycling can cause the lens to come loose and is not loose in cell. Need written procedure to avoid this problem. This is particularly true with achromats, since the radii of curvature of the lens surfaces are larger than a singlet lens of the same focal length,
llamb
 (posted 2020-09-19 09:20:57.0)
Hello Till, thank you for your feedback. I have reached out to you directly to gather more information and troubleshoot, so we can consider these suggestions further as well.
user
 (posted 2018-08-25 19:04:05.513)
It would be really useful if you offered your lens mounts with consistent beam heights that are multiples/fractions of 25 mm/1 inch to match standard heights. It would make it so much easier to use them with 1 inch fixed height posts (which we use almost exclusively for ease of alignment, stability and vibration damping) without height adapters. Even if you useand often you end up a few 100 um off the desired height.
This point is more a general observation I have made on many Thorlabs products during my almost 9 years working with optics and optomechanics. It also applies to other optomechanical components like cage mounts, rotation mounts etc.
Many competitors do offer these, the main reason to stay with Thorlabs (and adapters) for non-adjustable optomechanics are short turnover times. I know many colleagues in many research groups who are wondering exactly the same thing.
llamb
 (posted 2018-08-27 11:27:39.0)
Thank you for your feedback. Many of our standard LMR- series mounts have been released over the course of several years, accounting for some incongruous beam heights with their designs. We are looking into ways to resolve this issue, possibly by using height spacers to put lens mounts at regular beam height intervals. Our newer MLH- Mini-Series lens mounts do account for this design idea and feature a consistent 10 mm beam height.
sergei.kuhn
 (posted 2018-06-19 15:03:34.007)
Do you offer this product in a vacuum compatible version (up to 10^-6 mbar)?
YLohia
 (posted 2018-06-19 10:17:41.0)
Hello, thank you for contacting Thorlabs. Please reach out to your local Thorlabs Tech Support team (Europe@thorlabs.com / +49 (0) 8131-5956-2) for a quote for an unanodized version of the mount you want from this page.
It would be very useful if the fixed lens mounts had a marking on the outside indicating the vertical position of the optic axis. In other words, something to measure the height of the center of the optic off of the table.
llamb
 (posted 2018-04-25 03:38:27.0)
Thank you for your feedback! I will post this idea to our internal product forum.
segreto
 (posted 2017-10-10 12:06:19.457)
For calibration purposes I would like to
precisely know the clear area of adapters
like LMRA8 and LMRA9.
Which is the accuracy on the indicated clear aperture diameter?
Do you have any aperture (7-8 mm diam.) with NIST traceable measurement of the clear area?
tfrisch
 (posted 2017-10-11 02:56:50.0)
Hello, thank you for contacting Thorlabs. None of these mounts have any NIST traceable documentation on the inner diameter aperture, so I would not treat them as a precision aperture. I will reach out to you directly about custom precision apertures, however.
Tyler
 (posted 2009-03-12 10:55:02.0)
A response from Tyler at Thorlabs to stevenbearden: Thank you for telling us that we are on the right track to providing you the information you need to choose the correct products. If in the future you have any suggestions on how to further improve the presentation of the products or have additional input on a presentation feature that you like, please let us know.
stevenbearden
 (posted 2009-03-11 19:09:18.0)
Just a note to thank you for a wonderful website. I am helping a small company design an enclosure that will utilize some THORLAB hardware inside. I have never visited a site for dimensional information and found what I needed as fast and easy (and accurately!) as I did today on yours. Great job to those that did the work, and of course those that saw the need from within your company. I will promote the use of your products in future designs. Keep up the great work, we (out here) DO appreciate it!
Sincerely,
Steven Bearden