SM Series Angled Optic Mounts

3° or 10° Angled Mounts Reduce Etalon Effects on Plano-Plano Optics
Eliminate Back Reflections
Ø1/2", Ø1", & Ø2" Mounts Available

SM1L03T

Ø1" Optic Mount with
10° Angle

SM1L03T3

SM1L20

SMR1

LM1XY

SM2L03T

Ø2" Optic Mount with
10° Angle

SM05L03T3

Ø1/2" Optic Mount with 3° Angle

An SM1L03T3 mount is attached to a Ø1" lens tube in line with a translation mount which centers the next optic on the displaced beam.

Application Idea

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OVERVIEW

Features

Mount Ø1/2", Ø1", or Ø2" Optics at 3° or 10° Angle
Reduce Back Reflections and Etalon Effects in Plano-Plano Optics
SM05 (0.535"-40), SM1 (1.035"-40), or SM2 (2.035"-40) Threaded
Retaining Ring and Locking Nut Included

These Angled Optic Mounts are designed to minimize back reflections occurring from a Ø1/2", Ø1", or Ø2" optical window by mounting it at a fixed 3° or 10° angle. These mounting angles also help reduce the etalon effects present in optics with parallel surfaces. The SM threading on the rear side allows the mounts to be easily coupled to our Ø1/2", Ø1", or Ø2" lens tubes. Using our thread adapters, the mounts can also be added to a Ø1.5" or Ø3" lens tube setup.

The etalon effect occurs when the front and back surfaces of a window or filter create Fresnel reflections that interfere with the original beam. Tilting a window with an angled optic mount reduces the etalon effect, and the output from the window or filter contains less interference, giving a smoother, more accurate baseline of the source.

Since the beam exiting the angled window is displaced as a function of the thickness of the window and its material, Thorlabs recommends using the angled optic mount together with an XY Translating Mount such as the LM05XY, LM1XY, or LM2XY to align the subsequent optic.

Hide SM05 Series Angled Mounts

SM05 Series Angled Mounts

Mount Ø1/2" Optics at a 3° or 10° Angle
Reduce Back Reflections and Etalon Effects in Plano-Plano Optics
SM05 (0.535"-40) Threaded
SM05RR Retaining Ring and SM05NT1 Locking Nut Included

These low-profile angled optic mounts are designed to minimize back reflections and reduce etalon effects occurring from Ø1/2" optical windows by mounting them at a fixed 3° or 10° angle. The SM05 (0.535"-40) threading on the rear side allows the mounts to be easily coupled to our Ø1/2" lens tubes. The SM05L03T3 and SM05L03TA mounts accommodate optics up to 6 mm and 3 mm thick, respectively, making them compatible with many of our flat windows.

Since the beam exiting the angled window is displaced as a function of the thickness of the window and its material, Thorlabs recommends using the angled optic mounts together with an XY Translating Mount such as the LM05XY in order to align subsequent optics to the displaced beam.

Item #	Optic Diameter	Angle	Max Optic Thickness	Clear Aperture	Included Retaining Ring	Included Locking Nut	Suggested Spanner Wrench
SM05L03T3	Ø1/2"	3°	0.24" (6.0 mm)	Ø0.40" (Ø10.2 mm)	SM05RR	SM05NT1	SPW603 for Retaining Ring and SPW502 for Locking Nut
SM05L03TA	Ø1/2"	10°	0.12" (3.0 mm)	Ø0.36" (Ø9.2 mm)	SM05RR	SM05NT1	SPW603 for Retaining Ring and SPW502 for Locking Nut

Part Number	Description	Price	Availability
SM05L03T3	Customer Inspired! SM05 Series 3° Angled Optic Mount	$38.81	Today
SM05L03TA	Customer Inspired! SM05 Series 10° Angled Optic Mount	$38.81	Today

Hide SM1 Series Angled Mounts

SM1 Series Angled Mounts

Mount Ø1" Optics at a 3° or 10° Angle
Reduce Back Reflections and Etalon Effects in Plano-Plano Optics
SM1 (1.035"-40) Threaded
SM1RR Retaining Ring and SM1NT1 Locking Nut Included

These low-profile angled optic mounts are designed to minimize back reflections and reduce etalon effects occurring from Ø1" optical windows by mounting them at a fixed 3° or 10° angle. The SM1 (1.035"-40) threading on the rear side allows the mounts to be easily coupled to our Ø1" lens tubes. These mounts accommodate optics up to 6 mm thick, making them compatible with many of our flat windows.

Since the beam exiting the angled window is displaced as a function of the thickness of the window and its material, Thorlabs recommends using the angled optic mount together with an XY Translating Mount such as the LM1XY in order to align subsequent optics to the displaced beam.

Item #	Optic Diameter	Angle	Max Optic Thickness	Clear Aperture	Included Retaining Ring	Included Locking Nut	Suggested Spanner Wrench
SM1L03T3	Ø1"	3°	0.24" (6.0 mm)	Ø0.87" (Ø22.0 mm)	SM1RR	SM1NT1	SPW602 for Retaining Ring and SPW502 for Locking Nut
SM1L03T	Ø1"	10°	0.24" (6.0 mm)	Ø0.78" (Ø19.8 mm)	SM1RR	SM1NT1	SPW602 for Retaining Ring and SPW502 for Locking Nut

Part Number	Description	Price	Availability
SM1L03T3	Customer Inspired! SM1 Series 3° Angled Optic Mount	$58.21	Today
SM1L03T	SM1 Series 10° Angled Optic Mount	$58.21	Lead Time

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SM2 Series Angled Mounts

Mount Ø2" Optics at a 3° or 10° Angle
Reduce Back Reflections and Etalon Effects in Plano-Plano Optics
SM2 (2.035"-40) Threaded
SM2RR Retaining Ring and SM2NT1 Locking Nut Included

These low-profile angled optic mounts are designed to minimize back reflections and reduce etalon effects occurring from Ø2" optical windows by mounting them at a fixed 3° or 10° angle. The SM2 (2.035"-40) threading on the rear side allows the mounts to be easily coupled to our Ø2" lens tubes. These mounts accommodate optics up to 12 mm thick, making them compatible with many of our flat windows.

Since the beam exiting the angled window is displaced as a function of the thickness of the window and its material, Thorlabs recommends using the angled optic mount together with an XY Translating Mount such as the LM2XY in order to align subsequent optics to the displaced beam.

Item #	Optic Diameter	Angle	Max Optic Thickness	Clear Aperture	Included Retaining Ring	Included Locking Nut	Suggested Spanner Wrench
SM2L03T3	Ø2"	3°	0.47" (12.0 mm)	Ø1.83" (Ø46.6 mm)	SM2RR	SM2NT1	SPW604 for Retaining Ring and SPW503 for Locking Nut
SM2L03T	Ø2"	10°	0.47" (12.0 mm)	Ø1.66" (Ø42.2 mm)	SM2RR	SM2NT1	SPW604 for Retaining Ring and SPW503 for Locking Nut

Part Number	Description	Price	Availability
SM2L03T3	Customer Inspired! SM2 Series 3° Angled Optic Mount	$87.32	Today
SM2L03T	Customer Inspired! SM2 Series 10° Angled Optic Mount	$87.32	Today