Abstract: The present disclosure discloses an endoscopic plasma monochromatic light analysis system, belonging to the magnetically confined plasma field. The system consists of multiple sets of optical lens groups, a flexible optical fiber array, narrowband filters, dichroic mirrors, beam splitter mirrors, optical detectors, an indicating light source, and position adjustment motors. By rotating, the front-end reflecting mirror transmits plasma emission lights from different positions to a collecting lens such that the lights focus onto an optical fiber array end face. The flexible optical fiber array is used to extract plasma emission light from inside complex structures to a low-radiation area.

Abstract: This application relates to the technical field of card holder structures, and provide a single-card holder, an electronic device, a card holder recognition method, and a card holder assembly method. The single-card holder includes a card holder body and a filler. The single-card holder has an identifier region for forming an identifier. The card holder body includes a first slot and a second slot. The first slot is configured to mount a card member. The second slot is the same as or different from the first slot. The filler is filled in the second slot, and at least corresponds to part of the identifier region. The electronic device includes a card base and the single-card holder. The single-card holder matches the card base.

Abstract: This application relates to the technical field of card holder structures, and provide a single-card holder, an electronic device, a card holder recognition method, and a card holder assembly method The single-card holder includes a card holder body and a filler. The single-card holder has an identifier region for forming an identifier. The card holder body includes a first slot and a second slot. The first slot is configured to mount a card member. The second slot is the same as or different from the first slot. The filler is filled in the second slot, and at least corresponds to part of the identifier region. The electronic device includes a card base and the single-card holder. The single-card holder matches the card base.