Accessories and extensions for the main bracket FOF1

The objective lens mounting frame allows for the installation of five objective lenses in a self-assembled microscopic system, facilitating the construction of systems that require switching between multiple high and low magnification objective lenses. The housing and threads of the objective lens mounting frame are made of copper, with a stainless steel backplate at the top. The combination of a spring plate and a hard stainless steel ball, along with the positioning grooves on the housing, forms a precise positioning mechanism. This positioning mechanism can secure the objective lens, ensuring an objective lens switching positioning accuracy of ≤±50 μm and a single-hole bidirectional repeatability of ≤30 μm. It ensures that the optical components in the system are aligned with the optical axis both vertically and horizontally. The five objective lens mounting threads at the lower end of the FOF1 are RMS threads. The upper end of the objective lens mounting frame features a D1T male dovetail, which can be mounted onto a manual focusing stage using a DMAS mounting arm (sold separately).