Newport Corporation | SL Series High-Stability Steel Gimbal Mounts

SL Series High-Stability Steel Gimbal Mounts

High-stability mount
Sizes for most popular optics
Convertible to right-handed and left-handed versions
Standard, differential, or locking drives

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DescriptionSpecifications Models Catalog PDF

SL Series Optical Mounts are true gimbal mounts for high-resolution azimuth and elevation adjustment of mirrors and beamsplitters. The fixed rotational axes intersect at the front surface of the optic, allowing simple, non-coupled rotation without translation. The gimbal design also greatly reduces beam wander and optical path-length changes. These mounts are designed for maximum clear aperture of the transmitted beam at a 45° incident angle.

SL Mounts are designed for a single nominal optical diameter for positive, “made-to-fit” three-point mounting inside the gimbal body. The nominal diameter of the optic corresponds to the numbers in the Model number, so that an SL50 mount accepts a 50 mm optic. The base plate can be mounted in two places which allows you to convert between right-hand and left-hand operation. SL Series Mounts are configured with a base plate and riser (if required) for a nominal 50 or 75 mm optical axis height. Riser blocks of 25 mm and 50 mm may be placed in any combination beneath the base plate to achieve any optical axis height (>75) which is a multiple of 25 mm. For continuously variable height adjustment we recommend the ECN-80 elevator base.

For general applications, BM Micrometer drives supply graduated settings for repeatable positioning. For ten times higher positioning sensitivity, specify BD Differential Micrometers. BHC Lockable Adjustment Screws lock the optic in position to prevent inadvertent misadjustment.

RH bases are ideal for fix height settings

SL mount on a UMR stage assembly

Related Products

ECN-80 Elevator Bases
RH Series Riser Bases

The ECN-80 is ideal for continuously variable height adjustment.

Specifications

Model	Optic Diameter (mm)	φ Clear Aperture (mm)	Average Optic Thickness⁽¹⁾ (mm)	Transmitted Beam (mm)	Reflected Beam (mm)	Angle Range, α (°)	Sensitivity⁽²⁾ (arc sec)
SL25.4	25.4	21	5	9	11.5	3	5.8
SL50	50	46	8	26	29.5	2	3.9
SL51	50.8	46	8	25	29.3	2	3.9
SL76.2	76.2	70.2	12.5	39	47	2	3.1
SL101.6	101.6	93	18	56	60	2	2.7

1) Optic thickness range 1-15 mm, SL101.6 range 14-20 mm
2) When using BM Micrometers

Maximum reflected and transmitted beam diameters for optics of typical thickness. The reflected beam diameter will not change with optic thickness, but the diameter of the transmitted beam is reduced when thicker optics are used.

	Model	Description
	ECN-80	Elevator Base, 60 mm Height Adjustment, Rotating Top Plate
	M-ECN-80	ECN Series Lab Jack, Rotating Column, 80mm Diameter, 100-160mm Range, Metric
	M-RH-25	Riser Base, 25 mm, Metric, SL Series Optical Mounts
	M-RH-50	Riser Base, 50 mm, Metric, SL Series Optical Mounts
	RH-25	Riser Base, 25 mm, SL Series Optical Mounts
	RH-50	Riser Base, 50 mm, SL Series Optical Mounts
	SL101.6BD	SL Series Gimbal Optical Mount, 101.6mm, 2 BD Micrometers, Knob
	SL101.6BHC	SL Series Gimbal Optical Mount, 101.6mm, 2 BHC Precision Screws, Hex
	SL101.6BM	SL Series Gimbal Optical Mount, 101.6mm, 2 BM Micrometers, Knob, ±2°
	SL101.6N	SL Series Gimbal Optical Mount, 101.6mm, No Actuators
	SL25.4BD	SL Series Gimbal Optical Mount, 25.4mm, 2 BD Micrometers, Knob
	SL25.4BHC	SL Series Gimbal Optical Mount, 25.4mm, 2 BHC Precision Screws, Hex
	SL25.4BM	SL Series Gimbal Optical Mount, 25.4mm, 2 BM Micrometers, Knob, ±3°
	SL25.4N	SL Series Gimbal Optical Mount, 25.4mm, No Actuators
	SL50BD	SL Series Gimbal Optical Mount, 50mm, 2 BD Micrometers, Knob
	SL50BM	SL Series Gimbal Optical Mount, 50mm, 2 BM Micrometers, Knob, ±2°
	SL50N	SL Series Gimbal Optical Mount, 50mm, No Actuators
	SL51BD	SL Series Gimbal Optical Mount, 51mm, 2 BD Micrometers, Knob
	SL51BHC	SL Series Gimbal Optical Mount, 51mm, 2 BHC Precision Screws, Hex
	SL51BM	SL Series Gimbal Optical Mount, 51mm, 2 BM Micrometers, Knob, ±2°
	SL51N	SL Series Gimbal Optical Mount, 51mm, No Actuators
	SL76.2BD	SL Series Gimbal Optical Mount, 76.2mm, 2 BD Micrometers, Knob
	SL76.2BHC	SL Series Gimbal Optical Mount, 76.2mm, 2 BHC Precision Screws, Hex
	SL76.2BM	SL Series Gimbal Optical Mount, 76.2mm, 2 BM Micrometers, Knob, ±2°
	SL76.2N	SL Series Gimbal Optical Mount, 76.2mm, No Actuators

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