功能

• Thin metal foil with small holes or slits of 400 μm or less.
• It is used for special filters, laser diffraction experiments, and microscope magnification calibration.
• High roundness holes and high parallelism slits have been realized by precision etching.
• For YAG laser (1064 nm) and CO2 laser (10.6 μm), use high energy laser pinhole coated with high reflectivity gold on high heat conduction copper.
• Pinhole foil (or slit foil) is held in an aluminum frame so it can be easily handled.
• Iris aperture (IH) is available when any aperture larger than φ1mm is required.
• * If dust adheres to the pin hole, light may not pass through the hole.
• * If light does not pass through the hole, blow the area around the hole with an air blower.
• * Pinhole foil and slit foil are very thin and fragile.
• * Pressing it with your finger or poking it with a sharp object may tear the foil.
• * The holes can hardly be seen visually.
• * Please check using a high magnification microscope.
• * For the orientation of the fixed slit, check the position of the marking indicating the slit width.
• * Even pinholes for high-power lasers may be damaged if the pulsed laser is focused.
• * When using for high power laser or pulse laser, calculate the energy density of the laser spot and confirm that it does not exceed the damage threshold before use.