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Kinematic Bases

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Kinematic Bases




  • Square and Circular Magnetic Retention Bases
  • Precision Ball and V-Groove Design for High Repeatability
  • Magnetic Mounting Seats for Aluminum Breadboards
  • Indexing Mounts with 22.5° or 24° Increments

Features

  • Insert and Remove Components with High Repeatability
  • Ball and V-Groove Design for Precise Alignment
  • Rare Earth Magnets Couple Top and Bottom Base Plates
  • Top and Bottom Plates Available Individually or as Complete Unit

Kinematic bases are an excellent method for mounting elements that need to be inserted and removed from the optical path with a high degree of repeatability. Our ball and V-groove design allows the top plate to be kinematically positioned on the base plate with a high degree of precision. The two plates of the kinematic base are held together using pairs of rare-earth magnets.

Selection Guide

Item #SizeAngular
Tolerancea
Description
KB1X1 (KB25/M) 1" x 1" (25 mm x 25 mm) 30 µrad Square Base with Central Mounting Hole
KB3X3 (KB75/M) 3" x 3" (75 mm x 75 mm) N/Ab Square Base with a Central 1/4"-20 (M6) Through Hole
and Nine 1/4"-20 (M6) Tapped Holes
SB1(/M) Ø1.7" (Ø43 mm) 1 µrad Circular Base with Central Mounting Hole and Lever
for Easy Removal
KBS98 N/A N/Ab Mounting Seats for Repeatable, Precision
Breadboard Positioning
NXF1F(/M) Ø1.3" (Ø33 mm) 10 µrad Circular Indexing (15 Positions) Kinematic Base
with Central Mounting Hole
NX1N(/M) Ø1.3" (Ø33 mm) 10 µrad Circular Indexing (16 Positions) Kinematic Base
with Ø1" Optic Mount
  • Repeatability of the positioning of the top plate of the kinematic base if it is removed and then replaced.
  • Angular Tolerance lacks meaning if the optic is not mounted on (near) the central axis of the top plate. Due to their numerous mounting options, angular tolerance is not given for the KB3X3 and KBS98 kinematic mounts. The ball and V-groove design of the KB3X3 and the KBS98 are of the same high-quality as used in the KB1X1 and SB1.

 

Kinematic Base: 1" x 1" (25 mm x 25 mm)

 

  • 30 µrad Angular Repeatability
  • 30 µm Lateral Repeatability
  • Ball and V-Groove Design Allows High-Precision Positioning
  • Top and Bottom Plates Available Individually or as Complete Unit

The top mounting plate and bottom base plate of the KB1X1 kinematic base are magnetically coupled using two pairs of high-strength magnets. The top plate of the base can be inserted and removed with high repeatability. The center-located #8 (M4) through hole on the top and bottom plate is counterbored for a caphead screw and allows the bottom plate to be attached to a TR Series post. As an alternative, the KBT1X1T top plate is offered with four 8-32 holes (see image in overview). With the use of an AE8E25E (AE4M6M) adapter, the base can be secured to a 1/4"-20 (M6) tapped optical table. For information about testing done on the repeatability of the KB1X1 and other kinematic bases, please see the Repeatability tab.

 

Kinematic Base: 3" x 3" (75 mm x 75 mm)

 

  • 30 µm Lateral Repeatability
  • Ball and V-Groove Design Allows High-Precision Positioning
  • Top and Bottom Plates Available Individually or as Complete Unit

The top mounting plate and bottom base plate of the KB3X3 kinematic base are magnetically coupled using two pairs of high-strength magnets. With a ball and V-groove design, the top plate can be inserted and removed with high repeatability. The top plate has a central 1/4"-20 (M6) through hole that can be used to attach a post holder, while an array of nine 1/4"-20 (M6) tapped holes on the top plate provide the same mounting functionality as an optical breadboard. The first image to the right shows a mirror mounted in a POLARIS-K05 Mirror Mount on the KB3X3. The second image to the right shows the separated top and bottom plates of the KB3X3. For information about testing done on the repeatability of the KB3X3 and other kinematic bases, please see the Repeatability tab.

 

Round Kinematic Base: Ø1.70" (Ø43.2 mm)

 

  • 1 µrad Repeatability
  • On/Off Switch to Connect/Disconnect Plates
  • Centered 1/4"-20 (M6) Mounting Hole for the SB1T(/M) Top Plate
  • Centered 8-32 (M4) Mounting Hole for the SB1T8(SB1T4/M) Top Plate
  • Top and Bottom Plates Available Individually or as Complete Unit

The top plate of this compact kinematic base can be easily removed and replaced with an ON/OFF switch that interrupts the magnetic force coupling the plates of the base. With a ball and V-groove design, the top plate will automatically reposition to an exact location with a repeatability of 1 µrad. The bottom plate has a centered 1/4"-20 (M6) through hole counterbored for a caphead screw that allows the base to be mounted to an optical table. Alternatively, CL6 table clamps can be used in the groove of the bottom plate to fix the base in an arbitrary position on an optical table, as shown in the photo to the right. For information about testing done on the repeatability of the SB1 and other kinematic bases, please see the Repeatability tab.

 

Kinematic Breadboard Seats

 

  • Converts Any Breadboard into Kinematic Platform
  • Top and Bottom Plate Sets Available Individually or as Complete Unit

The KBS98 kinematic seats can be used to convert any breadboard into a kinematic platform that can be removed and replaced with a high degree of accuracy. The KBS98 consists of six plates. Three of the plates, which are referred to as the bottom set, have V-groove slots and should be mounted on the stationary optical table or breadboard. The other three plates, which are referred to as the top set, have an inset ball that will sit in the V-groove of the bottom plate.

The top plates should be attached to the optical breadboard that is being taken out of and put back into an optical setup. The seats should be arranged in a triangular pattern near the corners/edge of the optical breadboard with the V-grooves in the bottom plates aligned so that the three axes defined by the V-grooves intersect at a common point. Proper positioning of the plates is necessary in order to maximize the stability of the optical breadboard.

 

Indexing Mounting Base

 

Features
  • 10 µrad Repeatability
  • Indexes to 15 Positions
  • 8-32 (M4) Center Tapped Hole
Applications
  • Precise Switching of Shared Laser Systems
  • Directing Optical Systems to Multiple Test Instruments
  • Easy Exchange of Optical Components

 

 

 

 

The NX1F is a 15-position indexing kinematic base that is ideal for redirecting a laser to multiple targets on an optical table. Each indexed position is labeled, and the top plate returns to any given position with a repeatability of 10 µrad. Three 8-32 (M4) tapped mounting holes in the bottom plate can be used to secure the NX1F to a TR series post. The bottom plate can be secured to a 1/4"-20 (M6) tapped optical table or breadboard with the use of an AP8E25E (AP6M4M) adapter. For information about testing done on the repeatability of the NX1F and other kinematic bases, please see the Repeatability tab.

 

Indexing Mount for Ø1" Optics

 

  • Indexed with 16 Positions at 22.5° Increments
  • Holds Ø1" Optics up to 7 mm (0.27") Thick
  • Three 8-32 (M4) Mounting Holes in Bottom Plate
  • Easy, Repeatable Exchange of Optical Components

The NX1N(/M) indexing mount for Ø1" optics features 16 indexed positions every 22.5° allowing the optic to be held at both 45° and 90°. The angular positions are engraved on the base plate for fast alignment. The top plate returns to any given position, indicated with an engraved witness line, with a repeatability of better than 10 µrad. This mount is ideal for redirecting a laser to multiple targets on an optical table, as well as for precise switching of shared laser systems.

The included SM1 (1.035"-40) retaining ring (SM1RR) secures the optic against the front lip of the mount. This indexing mount can hold optics that are no greater than 7 mm (0.27") thick. Neodymium iron magnets couple the top and bottom plates while stainless steel ball bearings and V-grooves provide the 16 indexing positions. Three 8-32 (M4) tapped mounting holes in the bottom plate allow the mount to be secured to a Ø1/2" post. A small through hole, located directly under the 90° engraving on the bottom plate, accepts a 5/64" (2.00 mm) ball driver to help provide enough torque when attaching the mount to the post.

Please Note: The top plate of this indexing mount is not compatible with the NX1F(/M) 15-position, indexing mounting base (sold separately).

ABOUT US

Our Mission is to accelerate the advancement of optical technology for precision measurements and their applications from the table tops of research laboratories to standard use in communication and high technology industries. Our aim is to serve our customers. Our hope is to create a place for highly skilled people in an open environment

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