功能

• Holder for optical elements such as ND filters and color filters that need to be removed frequently during optical experiments.
• Filters with different thickness can be easily replaced.
• The small filter holder (FH-10) holds the filter between the body and the knob.
• Fix the holder, pull the knob to create a gap between the body and knob, and insert the filter into the gap.
• When the knob is released, the knob returns with a spring, and the filter is caught between the body and the knob.
• If you insert a thin filter into the FH-25 or FH-50, the filter will not be fixed and may rattle.
• By attaching the filter to the adapter (FAD), it can be secured to the filter holder (FH-25, FH-50) without rattling.
• Filter holders can be used with both round and square filters (although FH-10 can only be used with round filters).
• Since FH-25 and FH-50 can insert multiple filters at the same time, they can be used for fine brightness adjustment and transmission wavelength adjustment.
• A framed ND filter (MAN, MFND) with an adapter (FAD) attached to the ND filter of various transmittance is also available.
• * If a thin filter is installed on the FH-25 or FH-50, movement of the filter may cause the optical axis of the optical system to shift slightly.
• * For precise experiments, attach the filter to the adapter (FAD).
• * Since the FH-25 and FH-50 rods use special shaped rods, they cannot be replaced with standard rods (RO -**-**).