Prism Holder

[Features]
· Configured so that the optical axis height is at the center of the element when the element is 20 mm, and standardized at 25 mm from the bottom.
· Move the upper sliding part to fix the prism.
· Use the upper knob to fix without having to move the element.
· The F551-20 bottom plate features M4 tapped holes. Mount a rod to change to a rod type.
· F552-20 can be finely adjusted.
· The elements are positioned using the pins in the three locations.