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Optical Enclosure Accessories

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Optical Enclosure Accessories




  • Tapped or Counterbored Cubes for Corners and Joints
  • Hinge and Backstop for Esay-to-Use Lids
  • Cover Plate Protects Rail End

Features

  • Construction Cubes for Rigid Corners and Joints
  • Right-Angle Bracket Reinforces Corners
  • Black, Lightweight Panels Block Unwanted Light
  • Hinge for Constructing Lids that Smoothly Open and Close
  • Backstops Hold Lids Open
  • Cover Plate Hides Exposed Rail Ends


Alahram add-ons for 25 mm rail optical enclosures aid in building complex, elegant structures that are sturdy and easy to use. We offer construction cubes of either high-strength plastic or anodized aluminum for forming rail junctions of up to six rails and a bracket that reinforces right-angle connections. Our black construction board forms panels that block stray light and are easily cut to size, while our hinges and backstops help construct convenient enclosure openings.


Alahram accessories for assemblies made of 25 mm rails include corner cubes and brackets, T-Nuts, low-profile channel screws, breadboard mounting accessories, and rail joiners. In addition, we offer optical enclosures, enclosure accessories, and "do-it-yourself" tools like taps, tap guides, and drill guides for home-built XE25-based constructions.


Counterbored Construction Cube for 25 mm Rails

 

  • Holds up to Three Rails at Right Angles
  • One-Piece Aluminum Construction for Excellent Rigidity
  • Parallel and Perpendicular to Within 0.002" (0.05 mm)

The RM1G Construction Cube contains three 1/4" (M6) counterbores on adjacent faces. It can be connected to up to three rails by tightening our Low-Profile Channel Screws (sold at the bottom of this page) through the counterbores, as shown in the image to the right. Since it is machined from a single block of aluminum, it is ideal for constructions that need the highest available degree of sturdiness.

 

Quick Corner Cube for 25 mm Rails

 

  • Holds up to Three Rails at Right Angles
  • Made from High-Strength Reinforced Plastic

The dowels on the faces of an XE25W3 Quick Corner Cube are positioned to fit into the four alignment holes on the end of a 25 mm rail. After inserting the dowels, our Low-Profile Channel Screws (sold at the bottom of this page) are used to fasten the corner cube to the rail, as shown in the image to the right.

Although these corner cubes provide excellent results when building enclosures, they are not recommended in cases where rails are being used to support optomechanics. In these situations, please use the RM1F or RM1G Construction Cubes shown below or above, or consider the techniques shown in the Construction Methods tab.

 

Tapped Construction Cube for 25 mm Rails

 

  • Holds up to Six Rails at Right Angles
  • One-Piece Aluminum Construction for Excellent Rigidity
  • Parallel and Perpendicular to Within 0.002" (0.05 mm)

The RM1F(/M) Construction Cube contains a centered 1/4"-20 (M6) tapped hole on all six sides. It can be connected to up to six 25 mm rails by using setscrews. Since it is machined from a single block of aluminum, it is ideal for constructions that need the highest available degree of sturdiness.

Please note that since the rail end and the RM1F are internally threaded, significant effort is required to make the rail end flush with the faces of the cube. For connecting rails at a right angle, we recommend the RM1G Construction Cube, XE25W3 Corner Cube, or XE25A90 Right-Angle Bracket (all sold on this page), since these parts fasten to the rail end with a through hole.

 

Right-Angle Bracket for 25 mm Rails

 

  • Brace 25 mm Rail Corners or Mount Rails Vertically
  • One-Piece Aluminum Construction for Excellent Rigidity
  • Parallel and Perpendicular to Within 0.002" (0.05 mm)

The XE25A90 Right-Angle Bracket fastens to 25 mm rails by using a 1/4"-20 (M6) cap screw and a T-Nut (not included) with the through hole located on the bottom or the side.

These mounts are ideal for fastening our optical enclosures to an optical table or breadboard.

 

Black Hardboard and Posterboard

 

  • Blocks Stray or Unwanted Light
  • Easily Shaped with a Utility Knife
  • TB5: 1/16" (1.6 mm) Thick, Solid Cardboard Panel
  • TB4: 5 mm Thick, Plastic-Coated Cardboard Panel with Foam Core

Thorlabs' black panels are an essential component of light-tight enclosures. Our TB5 Black Posterboard is 1.6 mm thick and ships in packages of five 20" x 30" (50.8 cm x 76.2 cm) panels. Simply score the panel with a utility knife and bend to form a light-tight corner. In contrast, our TB4 Black Hardboard is 5 mm thick and ships in packages of three 24" x 24" (61.0 cm x 61.0 cm) panels. The increased thickness provides enhanced acoustic absorption, while the foam core (pictured to the right) helps it remain lightweight. This is the same hardboard used in our preconfigured optical enclosures.

 

Hinge and Lid Stop for 25 mm Rail Enclosures

 

  • Build Lids that Swing Open and Closed
  • Lid Stops Allow Hands-Free Operation in Confined Spaces
  • Installed using Rail Channels

The XE25H Hinge is a high-strength, molded plastic hinge that creates a cover that smoothly opens and closes. It is held in the rail channel by four low-profile channel screws and four T-Nuts (all included) that fasten with a 3 mm balldriver. Please note that the closed hinge leaves a gap between the two rails to which it is attached, resulting in an opening that is not light tight without further modification.

The XE25LS Lid Stop is an anodized aluminum backstop that limits the travel of a lid to a 120° arc, holding the lid open and allowing hands-free operation inside the enclosure. It is ideal for setups with limited space or other situations where a fully open lid is not desirable. The XE25LS attaches to the rail channel using a T-Nut (not included) and is packaged with a 1/4"-20 cap screw, an M6 cap screw, and a washer.

 

Cover Plate for 25 mm Rails

 

  • Hide Exposed Rail Ends
  • Beveled Corners Match Beveled Edges of 25 mm Rail

These 1 mm thick cover plates are designed to hide an exposed extrusion end. To maintain a minimal physical profile, we recommend the use of Low-Profile Channel Screws to hold the cover plate in place. These screws are sold below.

 

Low-Profile Channel Screws

 

  • Sold in Boxes of 100 Screws
  • SH25LP38: 1/4"-20 Threading, 1/8" Hex Head
  • SH6M10LP: M6 Threading, 4 mm Hex Head

Our Low-Profile Channel Screws have a reduced cap height relative to standard screws, permitting them to be used in tight spaces. In particular, they are recommended when neighboring screws are at a right angle and in close proximity, as in our XE25W3 Corner Cube or RM1G Construction Cube.

Shown to the right are a standard cap screw and a low-profile channel screw installed in an RM1G cube. The low-profile screw's shortened cap height prevents neighboring screws from interfering with each other.

 

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

contact us

Tel               +966 35823441
Fax               +966 35823441
Egypt Mobile  +2 0120 7577664
KSA Mobile     +966 545 991188
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