Abstract: The present invention relates to a dark-field inspection device, and more particularly, to a dark-field inspection device capable of varying a wavelength of illumination light, selectively receiving a wavelength of scattered light, and adjusting an irradiation area of the illumination light.

Abstract: Disclosed is an MCIA (message communication interface assembly) battery, easily installable in the MCIA, for realizing lightness, slimness, and overall compactness of the PDA. The MCIA battery comprises a battery body (13) for supplying power; a combiner (9) attachably and removably combined with the slot-type MCIA (3) attachable to/removable from the PDA 1; and hinges (19 and 21) and a link (17) for connecting the battery body (13) with the combiner (9). The hinges and the link rotate the battery body and the combiner to closely attach the battery body to the PDA, and accordingly, the present invention provides an easy installation of the battery in the slot-type MCIA and fully realizes lightness, slimness, and overall compactness that the PDA pursues.