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Aluminum Protective Screens
Centered Through Hole for
24" x 12"
12" x 12"
11.81" x 2.95"
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Aluminum Screen Mounted to an
Thorlabs' Aluminum Protective Screens prevent stray or unwanted light from entering or exiting an experimental setup. The aluminum is treated prior to anodization to create a homogeneously diffusive surface that is superior to textured surfaces, which scatter light unevenly. These screens are available with flat and curved surfaces. The curved screens are particularly useful for shielding laser beams that might be reflected upwards. For applications that require laser alignment and beam blocking, we offer flat screens that feature an imperial or metric laser-engraved target grid on one side and powerful magnets in the base for flexibility when positioning the screen on magnetic surfaces.
These screens are not intended to serve as permanent beam dumps. For such applications, Thorlabs offers a comprehensive family of beam traps and beam blocks.
The laser optical density and barrier threshold of the material and coating used to manufacture the products featured here were tested at various wavelengths in accordance with EN 12254 and ANSI Z136.7. The results are tabulated below:
Thorlabs' Aluminum Protective Screens prevent stray or unwanted light from entering or exiting an experimental setup. The aluminum is bead blasted prior to anodization to create a homogeneously diffusive surface. With walls just 0.08" (2 mm) thick and bases that are 0.79" (20 mm) wide, these compact, lightweight screens are easily integrated into a laser setup.
The base of each screen contains several slotted mounting holes for 1/4"-20 (M6) cap screws that are each 2" (50.8 mm) long, providing flexible mounting options. The TPS4 additionally contains a centered through hole designed for 8-32 or M4 cap screws, allowing the TPS4 to be mounted to a post. Joiner plates (sold separately below) allow the straight laser safety screens to be joined together to form a continuous barrier.
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TPS5 and TPS6 Joined to Form a
These Joiner Plates allow our straight laser safety screens to be joined together to form a continuous barrier or complete enclosure around an experiment; please refer to the table to the right for compatible screens. Flat and 90° corner plates are available.
Both joiners comprise of a front and back plate that fit in front of and behind the screens to be joined. The joiner plates overlap the screens by about 1/4" (6 mm) on each side. The plates are then bolted together using the two black 1/4"-20 (M6) cap head screws supplied to sandwich the screens between the plates.
The plates are manufactured from anodized aluminum to maintain laser safety across the joint. Please note that these joiner plates cannot be used with the curved protective screens detailed below.
Relative to the straight protective screens sold above, Thorlabs' Curved Protective Aluminum Screens offer additional blackout and shielding for stray laser beams that might be reflected upwards. The aluminum is bead blasted prior to anodization to create a homogeneously diffusive surface. With walls just 0.08" (2 mm) thick and bases that are 0.79" (20 mm) wide, these compact, lightweight screens are easily integrated into a laser setup.
The base of each screen contains several slotted mounting holes for 1/4"-20 (M6) cap screws that are each 2" (50.8 mm) long, providing flexible mounting options. Additionally, the TPS8 contains a centered through hole designed for an 8-32 or M4 cap screw, allowing the TPS8 to be mounted to a post.
Click to Enlarge
TPSM1 in a Beam Stabilization Setup
Our Magnetic Laser Safety Screens are laser engraved on one side with a 1/2" (10 mm for metric versions) target grid for rough laser alignment, while the other side is blank to provide a complete beam blocking option. The base of the screen is fitted with a pair of 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. The compact size of the screen allows it to fit into small gaps between your accessories, enabling easy integration into a laser setup. This screen is constructed from bead-blasted aluminum to remove any sharp edges, which is then anodized to create a homogeneously diffusive surface.
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.