Abstract: A hand-held fluorescence microscope is disclosed, including: a partial-spectrum light source, a first filtering device, a second filtering device, and an image sensor arranged inside a housing of the hand-held fluorescence microscope. The partial-spectrum light source generates a first light beam. The first filtering device filters the first light beam to provide a second light beam. The second filtering device filters a fluorescence generated by a specimen after receiving the second light beam to provide a fourth light beam. The image sensor receives the fourth light beam to generate fluorescence images. One end of the housing is provided with a light mask for surrounding the specimen to avoid external light from being entering the image sensor. The light path of the second light beam projecting to the specimen does not overlap with the light path of the fluorescence radiating from the specimen to the second filtering device.

Abstract: A computer program product capable of enabling a computer to perform a digital image analyzing operation, wherein the digital image analyzing operation comprises: receiving settings of a plurality of lines corresponding to one or more image edges of a digital image; and identifying a plurality of intersections of the plurality of lines and the one or more image edges of the digital image.

Abstract: A digital imaging apparatus is disclosed including: a light source module; an image synchronization signal generator for generating an image synchronization signal; and a light source controller, coupled with the light source module and the image synchronization signal generator, for generating a light source control signal having a frequency corresponding to the image synchronization signal and synchronized with the image synchronization signal to control the light output of the light source module.

Abstract: An objective lens for a microscope has a casing, a telescopic tube assembly and a cap. The casing is tubular and has a through hole and a window. The telescopic tube assembly has an outer tube, an inner tube and an objective lens. The outer tube is mounted rotatably in the casing and has an inner thread and an annular knob aligned with the window. The inner tube mounted rotatably and moveably in the outer tube. The objective lens is mounted in the inner tube. The cap is mounted on the casing and has two guides mounted between the casing and the cap and slidably engaging the inner tube so the inner tube can move along the guides. The magnification and focal length of the microscope changes when the inner tube with the objective lens moves in the outer tube.