Abstract: An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens sequentially disposed in numerical order along an optical axis of the optical imaging system from an object side of the optical imaging system toward an imaging plane of the optical imaging system, wherein the optical imaging system satisfies 0.5<L12345TRavg/L7TR<0.9, where L12345TRavg is an average value of overall outer diameters of the first to fifth lenses, L7TR is an overall outer diameter of the seventh lens, and L12345TRavg and L7TR are expressed in a same unit of measurement.

Abstract: An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens sequentially disposed in numerical order along an optical axis of the optical imaging system from an object side of the optical imaging system toward an imaging plane of the optical imaging system; and a spacer disposed between the sixth and seventh lenses, wherein the optical imaging system satisfies 0.5<S6d/f<1.4, where S6d is an inner diameter of the spacer, f is an overall focal length of the optical imaging system, and S6d and f are expressed in a same unit of measurement.

Abstract: The present disclosure relates to a cleaning liquid composition and a cleaning method using the same. A polishing slurry composition according to an embodiment of the present disclosure includes: a chelating agent containing an organic salt; and an anionic surfactant.

Abstract: A transparent braces design method and an apparatus therefor are disclosed. A transparent braces design method and an apparatus therefor, according to one embodiment, predict the influence of adjacent teeth, which can occur when teeth move, when predicting, before treatment, the result of orthodontic treatment using transparent braces, and apply the prediction to a treatment plan, and thus can improve treatment efficiency.

Abstract: A composition for dissolving abrasive particles, and a cleaning method using the composition are provided. The composition includes a sulfur-containing organic acid, a fluorine ion-containing compound, and a solvent, and a turbidity change rate (%) measured at 60° C. for 15 minutes may be in a range of ?80 to ?99.

Abstract: The present disclosure relates to a cleaning liquid composition and a cleaning method using the same. A polishing slurry composition according to an embodiment of the present disclosure includes: a chelating agent containing an organic salt; and an anionic surfactant.

Abstract: Disclosed is an electronic device and a control method therefor. The electronic device may include a housing, a processor disposed in the housing, and at least one memory disposed in the housing, connected to the processor, and storing instructions that, when executed by the processor, cause the processor to: detect connection of a plurality of displays to the processor; determine connection types of the plurality of connected displays; display a first screen according to a first mode when all of the plurality of connected displays are internal displays that are exposed via at least a part of the housing; and display a second screen according to a second mode when some of the plurality of connected displays are internal displays and the remaining displays are external displays connected to the electronic device via an interface, a part of which is exposed via the housing.

Abstract: Disclosed is an electronic device and a control method therefor. The electronic device may include a housing, a processor disposed in the housing, and at least one memory disposed in the housing, connected to the processor, and storing instructions that, when executed by the processor, cause the processor to: detect connection of a plurality of displays to the processor; determine connection types of the plurality of connected displays; display a first screen according to a first mode when all of the plurality of connected displays are internal displays that are exposed via at least a part of the housing; and display a second screen according to a second mode when some of the plurality of connected displays are internal displays and the remaining displays are external displays connected to the electronic device via an interface, a part of which is exposed via the housing.