Features

Place Multiple Optics in Series
For Use in an SM1 Lens Tube
Inner Diameter: Ø0.91"
Made out of Brass or Plastic (Acetate)

These Ø1" optic spacers are used to separate optics within an SM1 lens tube. The drawing above shows a spacer between two plano-convex lenses. In this drawing two SM1 retaining rings hold the optics and spacer grouping together. As an alternative to using a plastic retaining ring, a spacer may be used to prevent direct contact between an anodized aluminum retaining ring and the optic's surface.

Our brass spacers are also ideal for securing thin round optics into optic mounts that use setscrews, such as our FMP1 Fixed Optical Mount. They provide a rigid, wide surface against which the setscrew can be tightened without causing damage to the optic.

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Posted Comments:

Poster: ronny

Posted Date: 2013-03-04 11:18:39.59

What about the same spacers for SM2 ???

Poster: cdaly

Posted Date: 2013-03-06 18:35:00.0

Response from Chris at Thorlabs: Thank you for using our web feedback. At the moment we do not offer version of these spacers for our SM2 series of lens tubes, though there have been some internal discussion about possibly of introducing them. I will log your request within our forums to help support this idea. Thank you very much for your input.

Poster:

Posted Date: 2013-02-21 21:21:08.187

Sometimes it would be useful to make small adjustments to the length of a tube. Some .5mm thick shims with an ID of 1.04" and an OD of 1.2" could come in very handy.

Poster: cdaly

Posted Date: 2013-02-27 16:27:00.0

Response from Chris at Thorlabs: Thank you for using our feedback tool. Typically, for an application which requires a variable length lens tube, we would recommend using either the SM1V05 or SM1V10, which can be threaded into another lens tube. The overall length of the two tubes can then be adjusted by threading this in or out by a given amount. When the appropriate length is obtained, the locking nut would then be tightened down against the first lens tube, securing the length.

Poster: sharrell

Posted Date: 2012-01-23 14:34:00.0

A Reply from Sean at Thorlabs: Thank you for your feedback! We have added the inner diameter of the spacers, Ø0.91", as a bullet on the overview tab. If you have any further questions or suggestions, please don't hesitate to leave additional feedback or email techsupport@thorabs.com.

Poster:

Posted Date: 2012-01-22 16:44:21.0

Would be nice to have the inner diameter on the Overview tab.

Poster: bdada

Posted Date: 2011-04-12 17:39:00.0

Response from Buki at Thorlabs to Johannes: Thank you for notifying us of an inaccuracy on our website caused by a rounding error. The correct thickness specification is 0.015" and our ESD and Web drawings will be changed to reflect this.

Poster: johannes.piel

Posted Date: 2011-04-12 16:00:22.0

the presentations says: 0.015" (0,4mm), but the drawing (autocad.pdf) says 0,02" (0.3mm). But 0.015"=0.381mm and 0.02"=0.508mm. Something is wrong here...

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Ø1" Optic Spacer

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