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XY Translation Mounts for 30 mm Cage Systems


  • Mount Ø1/2" or Ø1" Optics
  • Compatible with Our Lens Tubes
  • Mounts with ±0.25 mm, ±1.0 mm, or ±2.5 mm of X and Y Adjustment

ST1XY-S

Mount with 5 mm X and Y Travel for Ø1" Optics

CP1XY

Stainless Steel Flexure Mount for Ø1/2" Optics

SPT1

Slip Plate Positioner for Ø1" Optics

CXY1Q

Quick-Release Mount for Ø1" Optics

Application Idea

ST1XY-D and SM1ZM Zoom Housing for a Confocal Microscope Detector (See the Application Tab for More Details)

Micrometer
Drive

Related Items

Alternative Size Options
16 mm Cage XY Translators
30 mm Cage XY Translators
60 mm Cage XY Translators

Features

For Ø1/2" or Ø1" optical components mounted in a 30 mm cage system, Thorlabs offers several options for XY adjustment (orthogonal to the mechanical axis of the cage system). For experimental setups requiring fine adjustment, consider using our CP1XY Flexure Adjustment Plate, CXY1 Cage Mount, or CXY1Q Cage Mount with Quick-Release Plate. Our ST1XY Translation Mounts offer up to ±2.5 mm of XY translation controlled by either 100 TPI adjuster screws, micrometer drives, or differential drives. In cases where coarse adjustment is sufficient, the SPT1 and SPT1T Slip Plate Mounts provide ±1 mm of manual XY adjustment.

Cage System Compatibility: Thorlabs offers 16 mm, 30 mm, and 60 mm cage systems designed primarily for Ø1/2", Ø1" ,and Ø2" optical components, respectively. The parts on this page are compatible with our 30 mm cage system and utilize Ø6 mm ER cage rods.

#Product DescriptionQty.Photo
(Click to Enlarge)
1 DFM - Kinematic
Dichroic Filter Cube
1 Dichroic Cage Cube
2 Microscopy Filters 1 Set Microscopy Filters
3 SM1B3 - Lens Tube Bellows 1 Bellows
4 SM1ZM - Non-Rotating
SM1 Zoom Housing
1 Zoom Housing
5 Focusing Lens Inside
Zoom Housing
1 Focusing Lens
6 ST1XY-D - XY Translator
with Differential Drives
1 XY Translator
7 Precision Pinhole Between
XY Translator and Photodetector
1 Precision Pinhole
8 Photodetector
SM1-Compatible Photodetector
1 Photodetector

ST1XY XY Translation Mounts - Optic Alignment in a Confocal Microscope Detection Module

Thorlabs' ST1XY-A, ST1XY-S, and ST1XY-D XY Translation Mounts are useful when precise alignment of optics is necessary. In the following example of a partial confocal microscope, a light-tight connection is created between a DFM Dichroic Filter Cube (denoted by 1 in the image below) containing a Microscopy Filter Set (2) and an APD120A2 Photodetector (8). A lens (5) located inside the SM1ZM High-Precision Zoom Housing (4) focuses the beam onto a precision pinhole (7) located just before the avalanche photodetector's detector element. The SM1ZM zoom housing is mounted directly onto the ST1XY-D XY Translation Mount with Differential Adjusters (6), creating a compact XYZ mount. SM1 Lens Tubes and the SM1B3 Lens Tube Bellows (3) allow for a light-tight connection without inhibiting the free movement of the XYZ mount.

Components used in the configuration pictured below are listed in the table to the right. These parts, along with SM1 Lens Tubes and 1" Post Assemblies, are sold separately.

Basic Square Cage Plate
An example of the standard cage
plate measurements determining
cage system compatibility.

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 to right). 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. All locking setscrews used in these cage plates are standard 4-40 setscrews, which use a 0.05" hex key.

Standard Threads

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.

Standard Cage System Measurements
Cage System 16 mm 30 mm 60 mm
Thread Series SM05 SM1 SM2
Rod to Rod Spacing 16 mm (0.63") 30 mm (1.18") 60 mm (2.36")
Total Length 25 mm (0.98") 41 mm (1.60") 71.1 mm (2.8")
Cage Components
Cage Rods 16 mm These rods are used to connect cage plates, optic mounts, and other components in the cage system. The SR Series Cage Rods are compatible with our 16 mm cage systems, while the 30 mm and 60 mm cage systems use ER Series Cage Rods.
30 mm
60 mm
Cage Plates 16 mm These serve as the basic building blocks for a cage system. They may have SM-threaded central bores, smooth bores sized for industry standard optics or to accommodate the outer profile of our SM Series Lens Tubes, or specialized bores for other components such as our FiberPorts.
30 mm
60 mm
Optic Mounts 16 mm Thorlabs offers fixed, kinematic, rotation, and translation mounts specifically designed for our Cage Systems.
30 mm
60 mm
Cage Cubes 16 mm These cubes are useful for housing larger optical components, such as prisms or mirrors, or optics that need to sit at an angle to the beam path, such as beamsplitters. Our cage cubes are available empty or with pre-mounted optics.
30 mm
60 mm
Post and Breadboard Mounts and Adapters Mounting options for cage systems can be found on our Cage System Construction pages. Cage Systems can be mounted either parallel or perpendicular to the table surface.
Size Adapters Cage System Size Adapters can be used to integrate components from different cage system and threading standards.
Specialized Components Thorlabs also produces specialized cage components, such as Filter Wheels, a HeNe Laser Mount, and a FiberPort Cage Plate Adapter, allowing a wide range of our products to be integrated into cage-mounted optical systems. Explore our Cage Systems Visual Navigation Guide to see the full range of Thorlabs' cage components.
Click the Support Documentation icon document icon or Part Number below to view the available support documentation
Part NumberProduct Description
CP1XY Support Documentation CP1XY:30 mm Cage XY Flexure Adjustment Plate
CPA1 Support Documentation CPA1:30 mm Cage System Alignment Plate with Ø1 mm Hole
CPA2 Support Documentation CPA2:30 mm Cage System Alignment Plate with Ø5 mm Hole
CXY1 Support Documentation CXY1:30 mm Cage System, XY Translating Lens Mount for Ø1" Optics
CXY1Q Support Documentation CXY1Q:30 mm Cage System, XY Translating Mount for Ø1" Optics with Quick Release Plate
CXY1QF Support Documentation CXY1QF:Quick-Release Plate for the CXY1Q Translation Mount
SPT1 Support Documentation SPT1:Coarse ±1 mm XY Slip Plate Positioner, 30 mm Cage Compatible
SPT1/M Support Documentation SPT1/M:Coarse ±1 mm XY Slip Plate Positioner, 30 mm Cage Compatible, Metric
SPT1T Support Documentation SPT1T:Coarse ±1 mm XY Thick Slip Plate Positioner with 2 SM1RR Retaining Rings, 30 mm Cage Compatible
SPT1T/M Support Documentation SPT1T/M:Coarse ±1 mm XY Thick Slip Plate Positioner with 2 SM1RR Retaining Rings, 30 mm Cage Compatible, Metric
Part NumberProduct Description
ST1CP Support Documentation ST1CP:Cover Plate with Clearance Holes
ST1XY-A Support Documentation ST1XY-A:XY Translator with 100 TPI Drives
ST1XY-A/M Support Documentation ST1XY-A/M:XY Translator with 100 TPI Drives, Metric
ST1XY-D Support Documentation ST1XY-D:XY Translator with Differential Drives
ST1XY-D/M Support Documentation ST1XY-D/M:XY Translator with Differential Drives, Metric
ST1XY-S Support Documentation ST1XY-S:XY Translator with Micrometer Drives
ST1XY-S/M Support Documentation ST1XY-S/M:XY Translator with Micrometer Drives, Metric
VRC4CPT Support Documentation VRC4CPT:30 mm Cage System Alignment Plate with IR Disk
VRC6CPT Support Documentation VRC6CPT:30 mm Cage System Alignment Plate with Mid-IR Disk

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Posted Comments:
Poster:paulinio91
Posted Date:2015-03-30 16:04:49.71
Hi, will ST1XY be work without damage with connected via tube SM1L03 cube C4W (and to C4W connected 2 translators, 2 lenses). What a maximum load of ST1XY translator? Looking like this: ST1XY with lens in tube | fixed ST1XY-SM1L03-(C4W with B3CR) | ST1XY with lens in tube
Poster:cdaly
Posted Date:2014-03-05 11:48:52.0
Response from Chris at Thorlabs: Thank you for you feedback. Yes, it is possible for the ST1XY series of translators, but it must be done during assembly. We have quoted this with Z806 actuators before. I will contact you directly about this.
Poster:hugh.simons
Posted Date:2014-03-03 07:35:05.96
Hi, Is it possible for any of the 30mm (or even 16mm) cage-mount XY stages to be motorized? Thanks, Hugh
Poster:jlow
Posted Date:2012-08-17 12:16:00.0
Response from Jeremy at Thorlabs: Thank you for pointing this out to us. We will fix the solid model files for this part shortly.
Poster:
Posted Date:2012-08-17 09:43:41.0
Hi The CAD (STEP) download for the CP1XY appears to be missing an adjustment knob on one axis. The PDF file shows the knob. Thanks for making these avialable.
Poster:bdada
Posted Date:2012-04-26 19:30:00.0
Response from Buki at Thorlabs to rjaculbia: The ST1XY has three 8-32 (M4) tapped holes on the bottom surface to allow direct mounting on our TR Series Posts. The TR post can be placed in a post holder which is secured to the table with a post holder base like the BA2. Please use the link below to review our selection of our 1/2" post assembly products: http://thorlabs.com/navigation.cfm?Guide_ID=52 If you want to mount the ST1XY closer to the optical table, please consider using the MA2 adapter instead of the BA2 (threads are not directly compatible). The MA2 has #8-32 mounting holes for the ST1XY and a center clearance hole for 1/4"-20 threads. Another alternative is to mount the MA2 adapter on our 1.5" diameter P series posts. Please use the link below to see a picture of the ST1XY in our KT110 fiber launch system to see this configuration. http://thorlabs.com/thorProduct.cfm?partNumber=KT110 There are just a few options for you to consider. Please contact TechSupport@thorlabs.com if you have any questions.
Poster:
Posted Date:2012-04-26 09:28:29.0
Hi, If I want to mount the ST1XY on an optical table, what are my options? Can I screw the ST1XY on a BA2 and mount the BA2 on the table or is there a better way? Thanks. rjaculbia
Poster:tcohen
Posted Date:2012-04-19 13:50:00.0
Response from Tim at Thorlabs: Retrofitting the ST1XY-S to have the differential drives is possible, but will include more than simply switching out one for the other. I will contact you with the parts, tools and information needed to make this alteration.
Poster:doron.azoury
Posted Date:2012-04-18 10:14:10.0
Hi, We have ST1XY-S. Is it possible to replace only the drivers, to differential driver (thorlabs model DM22),as in ST1XY-D? Thank you.
Poster:bdada
Posted Date:2012-01-12 19:42:00.0
Response from Buki at Thorlabs: Thank you for participating in our feedback forum and for your product suggestion on how to increase the mounting options for the ST1XY translation mounts. We would like to learn more about where the placement of the additional threaded holes would be beneficial to you but we do not have your contact information. Please contact TechSupport@thorlabs.com to discuss this further.
Poster:
Posted Date:2012-01-12 14:32:46.0
Can you please put a second M4&M6 thread on both sides of ST1XY products? This would be very helpful to mount them when an optical table is crowded. Thanks
Poster:Thorlabs
Posted Date:2010-07-14 10:09:09.0
Response from Javier at Thorlabs to day: thank you for your feedback. You can certainly mount any of the ST1XY-*/M mounts onto the PT1/M translation stage. The mounting threads on the metric ST1XY mount are M4, while the PT1/M features M6 threads, so you can use the AP6M4M external M4 to external M6 thread adapter (http://www.thorlabs.com/NewGroupPage9.cfm?ObjectGroup_ID=1745). If height adjustment is needed, you can use our metric posts and post holders.
Poster:day
Posted Date:2010-07-14 12:19:06.0
Can the ST1/M be mounted on the PT1/M to create an XYZ lens mount? (I would like finer resolution in the Z direction than the 50TPI of the SM1ZM). Which adapter would I need for this? Thanks
Poster:apalmentieri
Posted Date:2010-01-05 09:22:05.0
A response from Adam at Thorlabs to amy peng: I am sorry for the delayed resonse. Thank you for the suggestion that we had a version of the HPT1 designed for the 60mm cage system. We are currently looking to add this to our design plan. While we do not have this readily available, we hope to add to our wide variety of products soon.
Poster:amypeng
Posted Date:2009-12-02 07:07:18.0
Can you make equivalent of this product but for 60mm cage mounts?
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XY Flexure Translation Mount, 30 mm Cage Compatible

  • Flexure Design for Maximum Stability
  • Stainless Steel Construction
  • SM05 (0.535"-40) Compatible
  • 0.5 mm Range in X and Y Directions
  • Resolution: 200 µm/rev

The CP1XY offers ±0.25 mm of XY travel manipulated by M2.5 x 0.20 fine pitch adjusters. The stainless steel flexure design provides excellent long-term stability and is ideal for fiber coupling applications or experiments that use spatial filters or pinholes, which require fine positioning. The 0.35" (40.64 mm) long center bore is tapped through with an SM05 (0.535"-40) thread to allow the integration of our extensive SM05-threaded family of products. We recommend using two SM05RR retaining rings (sold separately) to secure an optic in the bore. The stainless steel adjustment plate is vacuum compatible to 10-5 Torr.

Item #TravelDriveOptic MountingER Cage Rod Connection
CP1XY ±0.01" (0.25 mm) M2.5 x 0.20 Fine Pitch Adjusters SM05 (0.535"-40) Thread 4 Through Holes with Side-Located Locking Screws
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
CP1XY Support Documentation
CP1XY30 mm Cage XY Flexure Adjustment Plate
$365.40
3-5 Days

30 mm Cage XY Translator for Ø1" Optics

CXY1 in 30 mm Cage System
Click to Enlarge

CXY1 and SM1 Lens Tube
Mounted in a 30 mm Cage System
  • Accepts Ø1.00" (Ø25.4 mm) Optics up to 0.39" (10.0 mm) Thick
  • ±1 mm Travel in X and Y via 3/16"-100 Adjusters
  • Compatible with 30 mm Cage Systems
  • SM1 (1.035"-40) Threading for Compatibility with Our Extensive Line of SM1 Lens Tubes

The CXY1 XY Translator provides ±1 mm of travel perpendicular to the optical axis of a 30 mm cage system. This translation is actuated by two 3/16"-100 adjusters, which are lockable via a 0.035" hex key. The movable carriage is internally SM1 (1.035"-40) threaded and directly accepts Ø1" optics up to 0.39" (10.0 mm) thick when secured using the included SM1RR retaining ring. The fixed back side is also threaded to allow SM1 lens tubes to be attached. The center carriage has been designed to offer pure X and Y translation. The mount features engraved vertical and horizontal tick marks to use as an alignment aid for the mounting carriage.

The translation mount also features four through holes for use with our ER cage rods. Each cage rod is secured with one side-located 4-40 locking setscrew using a 0.05" (1.3 mm) hex key.

Item #TravelDriveOptic MountingER Cage Rod Connection
CXY1 ±1 mm 100 Threads per Inch (TPI) Adjusters SM1 (1.035"-40) Thread Through Holes with Side-Located Locking Screws
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
CXY1 Support Documentation
CXY130 mm Cage System, XY Translating Lens Mount for Ø1" Optics
$169.05
Today

30 mm Cage XY Translator for Ø1" Optics with Quick-Release Mounting Carriage

CXY1Q in 30 mm Cage System
Click to Enlarge

CXY1Q Mounted in a 30 mm
Cage System
Engraved circles indicate the correct orientation of the quick-release carriage. A white space for writing in the name of optic is located on the side of the CXY1QF.
  • Accepts Ø1.00" (Ø25.4 mm) Optics
  • ±1 mm Travel in X and Y via 3/16"-100 Adjusters
  • Magnetically Coupled, Quick-Release Mounting Carriage (Extra Carriages Sold Separately)
  • Compatible with 30 mm Cage Systems
  • SM1 (1.035"-40) Threading for Compatibility with Our Extensive Line of SM1 Lens Tubes

The CXY1Q XY Translation Mount is similar to the CXY1 mount sold above, but features a quick-release mounting carriage for easy exchange of components within a 30 mm Cage System. This mount provides ±1 mm of travel perpendicular to the optical axis of a 30 mm cage system. This translation is actuated by two 3/16"-100 lockable adjusters. The movable center carriage and magnetically coupled mounting carriage are internally SM1 (1.035"-40) threaded and directly accept Ø1" optics up to 0.39" (10.0 mm) and 0.20" (5.0 mm) thick, respectively, when secured using the included SM1RR retaining ring. The fixed back side is also threaded to allow SM1 lens tubes to be attached. The center carriage has been designed to offer pure X and Y translation.

The mount features engraved vertical and horizontal tick marks to use as an alignment aid for the movable carriage. A dot is engraved on both pieces of the mount to indicate the correct orientation of the quick-release carriage. Aligning the dots ensures the quick-release carriage is properly secured. The quick-release carriage also features a dedicated white space for denoting the optic that has been mounted within it (see the photo to the right). This allows for easy identification if more than one carriage is being used in a setup, as extra CXY1QF quick-release carriages can be purchased separately.

The translation mount also features four through holes for use with our ER cage rods. Each cage rod is secured with one side-located 4-40 locking setscrew using a 0.05" (1.3 mm) hex key.

To remove the quick-release carriage from the mount when in a closed cage system, detach the carriage, rotate it 90°, and then take it out of the system. There must be at least 1.60" (40.6 mm) separating the edge of the quick-release carriage and the next component in the system to provide enough clearance during removal.

Item #TravelDriveOptic MountingTorque Applied to CXY1QFER Cage Rod Connection
CXY1Q ±1 mm 100 Threads per Inch (TPI) Adjusters SM1 (1.035"-40) Thread 0.58 in-lb (0.0655 N•m)a Through Holes with Side-Located Locking Screws
  • Torque is relative to the plane of the magnets. We do not recommend using a lens tube longer than 3" with this mount.
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
CXY1Q Support Documentation
CXY1Q30 mm Cage System, XY Translating Mount for Ø1" Optics with Quick Release Plate
$225.00
Today
CXY1QF Support Documentation
CXY1QFQuick-Release Plate for the CXY1Q Translation Mount
$35.00
Today

5 mm Travel XY Translation Mounts

ST1XY-D(/M) Operation

The ST1XY translation mounts offer ±2.5 mm of travel provided by one of three drive types: adjuster screw, micrometer, or differential drive. They utilize hardened tool steel components on all moving parts to ensure long-term, drift-free operation. The ST1XY is designed to connect with our extensive line of Ø1" SM1 Lens Tubes as well as our 30 mm cage assemblies to offer great flexibility when building optical systems.

The translating SM1-threaded carriage accepts optics up to 0.48" (12.2 mm) thick when using two SM1RR retaining rings (included). A stationary internal SM1 thread with 0.14" (3.5 mm) depth is present on the other side of the mount that allows for coupling to stationary SM1 Lens Tubes.

Three 8-32 (M4) tapped holes are provided on the bottom surface to allow direct mounting on our Ø1/2" Posts.

Item #TravelDrive
Type
Drive MechanismOptic
Mounting
Post
Mounting
ER Cage Rod
Connection
ST1XY-A(/M) ±2.5 mm 100 TPI 0.01" (0.25 mm) per Revolution and 100 Threads per Inch Adjusters
(Locking Set Screw on Each Adjuster Uses 0.035" Hex Key)
SM1
(1.035"-40)
Thread
Three 8-32 (M4)
Tapped Holes on
Bottom Surface
4-40 Tapped Holes
or Counterbored
Mounting Using ST1CP
ST1XY-S(/M) Micrometer 0.5 mm per Revolution and 10 µm per Graduation Micrometer Screws
ST1XY-D(/M) Differential 0.4 mm per Revolution Coarse and 25 µm per Revolution
Fine Control with 0.5 µm per Graduation Differential Micrometers
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
ST1XY-A Support Documentation
ST1XY-AXY Translator with 100 TPI Drives
$328.76
Today
ST1XY-S Support Documentation
ST1XY-SXY Translator with Micrometer Drives
$361.83
Today
ST1XY-D Support Documentation
ST1XY-DXY Translator with Differential Drives
$467.78
Today
+1 Qty Docs Part Number - Metric Price Available / Ships
ST1XY-A/M Support Documentation
ST1XY-A/MXY Translator with 100 TPI Drives, Metric
$328.76
Today
ST1XY-S/M Support Documentation
ST1XY-S/MXY Translator with Micrometer Drives, Metric
$361.83
Today
ST1XY-D/M Support Documentation
ST1XY-D/MXY Translator with Differential Drives, Metric
$467.78
Today

Cover Plate with Clearance Holes

  • Designed Specifically for Use with the ST1XY Series of XY Translators (Featured Above)
  • Connect Two Internally Threaded Cage Components with ER Rods
  • SM1 (1.035"-40) Threaded Through Hole
  • Four 4-40 Screws Included

The ST1CP is a bolt-on adapter designed specifically for use with the ST1XY-series of XY translators. Like our ERSCA adapter, this plate can be used to connect two internally threaded cage components with ER rods. First thread the four included 4-40 screws through the ST1CP through hole and into the internally bored side of the ER rod (as shown in the figure to the left). Then, remove the back plate on an ST1XY stage and secure this adapter plate in its place using the four outer 2-56 counterbored through-holes. Once attached, this adapter plate keeps the cage and any SM1-threaded component attached to the adapter plate stationary, while enabling an optic inside the ST1XY stage to move relative to these fixed components.

Alternatively, this adapter can also be attached to the front side (i.e., the side without the removable mount) of an ST1XY stage using the included 4-40 screws. In this case, the front side of the ST1XY stage will no longer be cage compatible (although the back side still is). However, the advantage of this configuration is that two SM1-compatible components can be attached to the ST1XY stage (one on each side) and an optic inside the stage can be moved relative to these fixed components.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
ST1CP Support Documentation
ST1CPCover Plate with Clearance Holes
$28.97
Today

XY Slip Plate Positioners, 30 mm Cage Compatible

SPT1T Slip Plate BackClick to Enlarge
The two locking screws can also be threaded through counterbores in the back plate of the SPT1T (shown here) or SPT1.
  • ±0.04" (±1 mm) of Adjustment in Both X and Y Directions
  • Center-Located SM1 (1.035"-40) Threaded Hole in Front Slip Plate and Smooth Bore in Fixed Back Plate
  • Position Front Plate by Hand and Lock in Place by Tightening Locking Screws with 5/64" (2 mm) Hex Key
  • Secure Back Plate to 4 Cage Rods via Side-Located Setscrews or to a Ø1/2" Post via 8-32 (M4) Tap

The SPT1(/M) and SPT1T(/M) Slip Plate Positioners are designed to provide coarse XY positioning of optical components within our 30 mm Cage Assembly System. This design provides for manual adjustment only and is best utilized in conjunction with an alignment laser to monitor centricity. The front plate can be locked into position against the fixed plate via two locking screws, which can be threaded from either the front or back side of the mount.

The SPT1(/M) accomodates Ø1" optics up to 0.08" (2.0 mm) thick, while the thicker front plate on the SPT1T(/M) can hold Ø1" optics up to 0.34" (8.6 mm) thick. Unmounted optics can be secured with SM1RR Retaining Rings, two of which are included with the SPT1T(/M). The center-located SM1 (1.035"-40) tapped through hole also directly accepts externally SM1-threaded components.

Item #TravelSlip Plate ThicknessMaximum Optic ThicknessOptic MountingPost MountingER Cage Rod Attachment
SPT1(/M)±0.04" (±1 mm)0.23" (5.8 mm)0.08" (2.0 mm)SM1 (1.035"-40) Thread8-32 (M4) Tap
on Bottom Surface
4 Through Holes with
Side-Located Locking Screws
SPT1T(/M)0.50" (12.7 mm)0.34" (8.6 mm)
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
SPT1 Support Documentation
SPT1Coarse ±1 mm XY Slip Plate Positioner, 30 mm Cage Compatible
$60.18
Today
SPT1T Support Documentation
SPT1TCustomer Inspired!Coarse ±1 mm XY Thick Slip Plate Positioner with 2 SM1RR Retaining Rings, 30 mm Cage Compatible
$70.38
Today
+1 Qty Docs Part Number - Metric Price Available / Ships
SPT1/M Support Documentation
SPT1/MCoarse ±1 mm XY Slip Plate Positioner, 30 mm Cage Compatible, Metric
$60.18
Today
SPT1T/M Support Documentation
SPT1T/MCustomer Inspired!Coarse ±1 mm XY Thick Slip Plate Positioner with 2 SM1RR Retaining Rings, 30 mm Cage Compatible, Metric
$70.38
Today

Alignment Plates for 30 mm Cage Systems

VRC4CPT
Back View of VRC4CPT
  • Quick, Drop-In Beam Alignment Tool
  • Small Through Hole Aligned at Center of 30 mm Cage Assembly

The CPA1 and CPA2 Alignment Plates are convenient tools for aligning cage-based optical systems. These drop-in plates feature a small through hole at the exact center of the 30 mm cage assembly that is used for aligning visible beams. For easy alignment, the through hole is surrounded by engraved rings, which indicate Ø4 mm, Ø7 mm, Ø10 mm, and Ø13 mm. The CPA1 provides a Ø1 mm through hole, while the CPA2 provides a Ø5 mm through hole.

The VRC4CPT and VRC6CPT Alignment Plates are specifically designed to align IR or MIR beams in a cage-based optical assembly. Both plates are identical to the CPA1 (shown to the left) on the front. The back (shown to the right) of the VRC4CPT includes a Ø1/2" (Ø12.7 mm), non-rotating IR-sensitive fluorescing alignment disk made of the same material used in our VRC4 Viewing Card. Alternatively, the back of the VRC6CPT includes a Ø0.39" (Ø10.0 mm), non-rotating MIR liquid crystal alignment disk made of the same material used in our VRC6 Viewing Card, which has been tested with laser sources of wavelengths ranging from 1.5 µm to 13.2 µm. The VRC4CPT plate has a Ø1.5 mm hole centered on the plate's Ø1 mm hole, and the VRC6CPT has a Ø2.0 mm hole centered on the plate's Ø1 mm hole. 

Item #Wavelength RangeEmission BandMinimum Detectable Power DensityActive Region DiameterAlignment Features
VRC4CPT 790 to 840 nm, 870 to 1070 nm,
1500 to 1590 nm
~520 to 580 nm N/A 1/2" (12.7 mm) Ø1 mm Hole in Plate
Ø1.5 mm Hole in Disk Center
VRC6CPT 1500 to >13,200 nm N/A 0.3 W/cm2 @ 1550 nm  0.39" (10.0 mm) Ø1 mm Hole in Plate
Ø2.0 mm Hole in Disk Center
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
CPA1 Support Documentation
CPA130 mm Cage System Alignment Plate with Ø1 mm Hole
$12.24
Today
CPA2 Support Documentation
CPA230 mm Cage System Alignment Plate with Ø5 mm Hole
$12.24
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VRC4CPT Support Documentation
VRC4CPT30 mm Cage System Alignment Plate with IR Disk
$29.50
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VRC6CPT Support Documentation
VRC6CPTCustomer Inspired!30 mm Cage System Alignment Plate with Mid-IR Disk
$36.10
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