Instrumentation Bases

Convenient Solution for Optical Sensors
Large Base & Bottom Relief Cut Allow for Temporary,
Clamp-Free Positioning

IB3

Instrumentation Base

PMB3

Magnetic Base

Application Ideas

Ø1/2" Post Holders Mounted
on Instrumentation Bases
(Post Holders, Posts, and Power Sensors Sold Separately)

Related Items

Ø1/2" Post Holders

Power and Energy Meters

Other Magnetic Bases

Ø1/2" Posts

Instrument Shelves

Bases and Post Holder Kit

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Overview
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Features

Designed for Temporary Placement of Instruments or Optical Sensors in a Setup
Bottom-Located 1/4" (M6) Counterbore Enables Post Mounting

Thorlabs' instrumentation bases are designed to allow instruments or optical sensors, such as photodetectors, to be positioned temporarily into an optomechanical assembly. These bases essentially eliminate the need to securely fasten a base to an optical table. Additionally, the base provides a greater range of positional flexibility, as it does not require alignment with the standard hole pattern found on an optical table. After the mount is removed from a setup, the base can simply be placed elsewhere on the optical table or nearby shelf without requiring extra handling or storage precautions.

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Instrumentation Base

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Ø2.98" (75.7 mm) x 1/2" (12.7 mm)
Precision-Machined Aluminum with Bottom Relief Cut for Flat, Stable Mounting
Counterbored Mounting Hole Accepts 1/4"-20 (M6) Cap Screws

The IB3 Instrumentation Base provides a convenient means by which to temporarily position the optical head of an instrument into an optomechanical setup. The wide diameter and bottom relief cut provides excellent stability without the need to clamp the IB3 to the optical table.

Permanent Magnetic Base

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Ø2.63" (66.8 mm) x 3/8" (9.5 mm)
Ceramic Magnet in Base Provides Excellent Holding Force: 70 lbs (311 N)
Precision-Machined for Flat, Stable Mounting
Counterbored Mounting Hole Accepts 1/4"-20 (M6) Cap Screws

The PMB3 Base is a permanent magnetic version of our IB3 Instrumentation Base. The magnet is sufficiently strong to securely hold the base in place without clamping to an optical table. This base is only compatible with magnetic optical tables and breadboards. These are ideal for components which will temporarily be in a beam path, such as power meters.