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Z-Axis Translation Mounts
Cage-Compatible Z-Axis Translation Mount
Post-Mountable Z-Axis Translation Mount
The SM1Z is Part of the KT310
Thorlabs offers two Z-axis translation mounts that provide precise positioning of optical components along the optical axis. These mounts accept Ø1" (25.4 mm) optics directly or optics mounted inside lens tubes with external SM1 (1.035"-40) threading.
The SM1Z has four through holes for compatibility with our 30 mm cage systems. In contrast, the SM1ZP(/M) has 8-32 (M4) taps on the side and 8-32 (M4) and 1/4"-20 (M6) taps on the bottom, allowing it to be post mounted on any Ø1/2" or Ø1" post.
Cage System Overview
The Cage Assembly System provides a convenient way to construct large optomechanical systems with an established line of precision-machined building blocks designed for high flexibility and accurate alignment.
16 mm, 30 mm, and 60 mm Cage System Standards
Thorlabs offers three standards defined by the center-to-center spacing of the cage assembly rods (see image below). The 16 mm cage, 30 mm cage, and 60 mm cage standards are designed to accomodate Ø1/2", Ø1", and Ø2" optics, respectively. Specialized cage plates that allow smaller optics to be directly inserted into our larger cage systems are also available.
The flexibility of our Cage Assembly System stems from well-defined mounting and thread standards designed to directly interface with a wide range of specialized products. The three most prevalent thread standards are our SM05 Series (0.535"-40 thread), SM1 Series (1.035"-40 thread), and SM2 Series (2.035"-40 thread), all of which were defined to house the industry's most common optic sizes. Essential building blocks, such as our popular lens tubes, directly interface to these standards.
An example of the standard cage plate measurements determining cage system compatibility.
Thorlabs' SM1Z Translation Mount offers repeatable Z-Axis travel within a 30 mm cage system. It includes two SM1RR retaining rings for holding a Ø1" (25.4 mm) optic up to 0.28" (7.1 mm) thick. This allows for compensation of focusing errors in applications such as fiber alignment or spatial filtering within a cage system, as shown in the image to the right, or for applications that require fine adjustment along the optical axis.
The lens carriage is internally SM1 (1.035"-40) threaded and is translated using the precision micrometer actuator, which is graduated in 1 µm increments. The micrometer can be actuated using the knurled knob or a 5/64" (2 mm) hex key. Coarse movement is achieved by sliding the SM1Z along the rods of a 30 mm cage assembly. Once positioned, four 4-40 setscrews apply locking force to the cage rods, firmly holding the mount in place. The threaded carriage allows for thicker optics to be mounted to the SM1ZP using our SM1 lens tubes.
Additionally, the SM1Z mount is a component of the KT310 Spatial Filter System, as shown in the photo to the right. In this application, the SM1Z is used to hold an aspheric lens that focuses laser light into a pinhole.
For cage assemblies requiring a longer translation range along the optical axis, Thorlabs offers the CT1 stage capable of a full 1/2" (13 mm) of travel.
Thorlabs' SM1ZP(/M) Translation Mount offers repeatable, flexure-actuated, Z-axis travel. It includes two SM1RR retaining rings for holding a Ø1" (25.4 mm) optic up to 0.28" (7.1 mm) thick. This allows for compensation of focusing errors in applications such as fiber alignment or spatial filtering.
The lens carriage is internally SM1 (1.035"-40) threaded and is translated using the precision micrometer actuator, which is graduated in 1 µm increments. The micrometer can be actuated using the knurled knob or a 5/64" (2 mm) hex key. This threaded carriage allows for thicker optics to be mounted to the SM1ZP using our SM1 lens tubes, as shown in the image to the right. When mounted from the bottom, the center of the lens carriage is 2.00" (50.0 mm for SM1ZP/M) from the top of the post, while when mounted on its side, it is 0.68" (17.1 mm) from the top of the post.