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These IR alignment disks are ideally used as drop-in tools to simplify active alignment of IR and visible setups. A small Ø1.5 mm hole at the center enables beams to be aligned with the optical axis of our mounts or lens tubes. The active material on the VRC4D05 and VRC4D1 does not require charging and will emit light persistently when exposed to light in the 790 - 840 nm, 870 - 1070 nm, or 1500 - 1590 nm spectral regions. The active material on the VRC2D05 and VRC2D1 requires charging by visible light. When charged the disks will emit light when exposed to light in the 400 to 640 nm or 800 to 1700 nm spectral range.

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The VRC2SM1 IR viewing and alignment disk is a photosensitive disk made from a slow-fading phosphor that is designed to simplify the alignment of infrared beams. The alignment disk contains a target that clearly marks the optical axis of any SM1 (1.035"-40) threaded mount or lens tubes to which it is attached. The depth of the SM1 threading on the back side of the alignment disk is purposely kept short so that the user can quickly insert or remove the VRC2SM1 from the optical setup.

The VRC2RMS IR viewing and alignment disk is designed to simplify the alignment of infrared beams along the optical axis of an internally threaded RMS mount. The VRC2RMS has external RMS threads that allow it to be threaded into a mount designed for an RMS-threaded microscope objective lens. Both of these disks require charging in visible light.

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This frosted glass alignment disk is made from a 1500 grit Ground Glass Diffuser. The DG10-1500-H1 is Ø1" (Ø25.4 mm), and features a Ø1 mm (Ø0.04") hole drilled in the center for alignment purposes. The disk is ideal for use when viewing a beam exiting a lens tube as the beam can be seen through the ground glass. An example of this is shown in the image at the top right of this page. The disk is also available mounted in SM threaded cells in the section below.

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Our frosted glass alignment disks are also available mounted in SM threaded cells. The 1500 grit N-BK7 diffusers are excellent alignment targets for visible beams. An incident beam can be easily seen on either side of the disk and aligned to the Ø1 mm centering hole on the Ø1/2" and Ø1" versions or the Ø2 mm hole on the Ø2" version. The SM threaded mounts allow the alignment disks to be quickly inserted or removed from an optical system without the need of retaining rings and spanner wrenches to secure the disk within a system. Please see the section immediately above for unmounted frosted alignment disks.

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The SM05A7 and SM1A7 alignment disks provide useful aids for aligning visible beams to the center of optical mounts. To enable accurate alignment, the disks have clear markings with graduations on both the X and Y axes. The back of each alignment disk is threaded with our standard SM05 (0.535"-40) or SM1 (1.035"-40) thread, making the disk compatible with any of our Ø1/2" or Ø1" lens tubes or fixed lens mounts, respectively.

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• Quick and Easy Drop-In Visual Beam Alignment Tool
• Ø1 mm Through Hole
• For use with Ø1" and Ø2" Fixed Optics Mounts and Lens Tubes

These alignment tools can be quickly and easily dropped onto one of our fixed lens holder or lens tubes allowing the user to align a visible beam, using the Ø1 mm through hole in the center. Once the beam is aligned, the tool can be removed without disturbing the alignment. The plates feature eight 1 mm engraved concentric circles for optimal visual alignment of the beam when used with our Ø1" and Ø2" fixed optics mounts and lens tubes.

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Back View of VRC4CPT

• Quick, Drop-In Beam Alignment Tools
• Small Through Hole Aligned at Center of 16 mm, 30 mm, or 60 mm Cage Assemblies

These drop-in alignment plates are convenient tools for aligning visible beams in cage-based optical systems. They provide a Ø1 mm through hole at the exact center of the cage assembly (except for the CPA2, which contains a Ø5 mm through hole). For easy alignment, the through hole is surrounded by engraved rings.

The VRC4CPT Alignment Plate is specifically designed to align IR beams in a 30-mm-cage-based optical assembly. The front is identical to the CPA1 (shown to the left), and the back (shown to the right) includes a non-rotating IR-sensitive fluorescing alignment disk made of the same material used in our VRC4 Viewing Card. This disk has a centered Ø2 mm through hole, while the plate has a Ø1 mm centered through hole. See the table below for more information.

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ERCPS Cage Plate Stops snap onto cage rods without any disassembly of the cage system. Click to Enlarge

ERCPS Cage Rod Stops can mark the position of cage components.
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• Marks the Position of Cage Components
• Flexure Clamping Mechanism
• Sold in Packs of Four

ERCPS Cage Plate Stops mark the position of a cage plate, allowing it to be moved and repositioned in a cage system. These clamps are 0.14" thick and are compatible with Ø6 mm ER rods for 30 mm and 60 mm cage systems. Utilizing a flexure design, the clamps are secured in place using a 0.05" hex key. They can be easily clamped onto the middle of a cage rod without removing other components.

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Light from a HeNe Laser Passing Through a BHM1 Ruler

• Measure Beam Height on an Optical Table or Breadboard
• Two Neodymium Magnets Provide Holding Force
• Laser Engraved with 1/16" and 1.0 mm Graduations
• Twelve Holes for Beam Alignment Spaced at 1" and 25 mm Intervals
• Homogeneously Diffusive Anodized Coating

Our BHM1 Magnetic Ruler measures beam heights up to 6" (152.4 mm) on an optical table or breadboard. One side of the screen is laser engraved with 1/16" and 1.0 mm graduations for beam height measurement. Twelve Ø2.0 mm (Ø0.08") holes positioned next to the engraved numbers at 25.0 mm and 1.00" intervals allow the laser beam to pass through the ruler.

This measurement tool is constructed from bead-blasted aluminum to remove any sharp edges and then anodized to create a homogeneously diffusive surface. The compact size allows the tool to fit into small gaps between components, enabling easy integration into a laser setup. The base of each screen is fitted with a pair of neodymium magnets that hold the ruler to magnetic work surfaces and provide flexibility of movement when compared to an option that is bolted to the table.

Please note: Due to the presence of magnets, this ruler should not be used in the vicinity of pacemakers, credit cards, or other devices affected by magnetic fields.

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TPSM1 in a Beam Stabilization Setup

• Two Magnets on Underside Provide Holding Force
• Slotted Mounting Hole for Non-Magnetic Surfaces
• Laser Engraved with Target Grid
• Homogeneously Diffusive Anodized Coating
• Damage Threshold: >350 J/cm² (1064 nm, 20 ns, 20 Hz, Ø1.14 mm)
• Size: 7.87" x 2.95" (200.0 mm x 75.0 mm), Footprint: 2.95" x 1.38" (75.0 mm x 35.0 mm)

Our TPSM1(/M) Magnetic Laser Safety Screens are constructed from bead-blasted aluminum to remove any sharp edges, then anodized to create a homogeneously diffusive surface. One side of the screen is laser engraved with a 1/2" or 10 mm target grid for rough laser alignment, while the other side is blank to provide a complete beam blocking option. Their compact size allows them to fit into small gaps between your accessories, allowing easy integration into a laser setup. The base of each screen is fitted with a pair of powerful magnets that hold the screen to magnetic work surfaces and provide flexibility of movement. A through hole is also provided to allow the screen to be tightened down using a cap screw for more permanent placement or for use in non-magnetic applications.

Please note: Due to the presence of strong magnets, these laser screens should not be used in the vicinity of pacemakers, credit cards, or other devices affected by magnetic fields.