30 mm Cage to Ø1/2" Post Adapters

Integrate Ø1/2" Post-Mounted Components into a 30 mm Cage System
Available with 10 or 20 mm Spacing Between Post and Cage Plate
30 mm Cage Plate Front Face with SM1-Threaded Port

Application Idea

CPTS20 Adapter Used to Integrate a
DLM1 Rotation Mount on a Ø1/2" Post
into a 30 mm Cage System

Back

CPTS20

20 mm
Offset

CPTS10

10 mm Offset

Front

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Overview
Cage Overview
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Features

Mounts Ø1/2" Post and Components in a 30 mm Cage System
Double-Bored Hole and Locking Thumbscrew Securely Locks Post in Position
CP33 Cage-Plate-Style Front Face with SM1-Threaded Through-Hole

Thorlabs' 30 mm cage to Ø1/2" post adapters allow the integration of our post-mounted components into our 30 mm cage system. The front face of this clamp is similar to the CP33(/M ) cage plate and accommodates our Ø6 mm ER cage rods, which are secured using M4 x 0.7 side-located locking setscrews [5/64" (2 mm) hex]. The center-located SM1 (1.035"-40) threaded bore, which is compatible with our popular Ø1" lens tubes, directly accepts a Ø1" optic up to 0.19" (4.8 mm) thick. Two SM1RR retaining rings are included. For additional information on our cage system, please refer to the Cage Overview tab.

The tail stock of this adapter has a double-bored through-hole and a spring-loaded thumbscrew that provides three-point contact for Ø1/2" posts for secure placement. Two versions are available, providing either 10 mm [Item # CPTS10(/M)] or 20 mm [Item # CPTS20(/M)] separation between the post center and the back of the cage plate.

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.

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.

An example of the standard cage plate measurements determining cage system compatibility.

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.

Posted Comments:

paul.treadwell (posted 2014-06-25 10:55:28.943)

This product would be very useful to me IF the cage interface was ~10mm higher than it currently is (i.e. centreline at ~48.7mm instead of 38.7mm). I want to mount a 1" kinematic mirror mount on a post using a KCP1/M centering plate but this combination will make the centre of my 1" mirror 5.2mm above the centreline of the cage system. Would a special version of the CPTR20 be possible please? I would require 12 off.

jlow (posted 2014-07-14 12:50:18.0)

Response from Jeremy at Thorlabs: We can make this as a custom for you. We will get in touch with you for a quote.

View All »Matching Part Numbers

30 mm Cage to Ø1/2" Post Adapters

Features

Cage System Overview

16 mm, 30 mm, and 60 mm Cage System Standards

Standard Threads

30 mm Cage to Ø1/2" Post Adapters