▪ US Patent No. 9,060,405 (Korea Electrotechnology Research Institute)
발명의 명칭: Apparatus for controlling the operation of an LED, and method for controlling drive current thereof
대표도면:
대표독립항:
1. An apparatus for controlling the operation of LEDs using an AC power source, comprising: a first LED array configured to have a first side connected to an output side of the AC power source; a second LED array configured to have a first side connected to an input side of the AC power source; a rectification unit configured to have an input side connected between the output side of the AC power source and the first side of the first LED array, between the input side of the AC power source and the first side of the second LED array, to a second side of the first LED array, and to a second side of the second LED array; and an operation control unit configured to have an input side connected to an output side of the rectification unit and an output side connected to the input side of the rectification unit and to control a plurality of input currents output from the rectification unit and then received through the input side of the operation control unit so that the plurality of input currents is selectively output to the second side of the first LED array and the second side of the second LED array.
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▪ US Patent No. 9,075,239 (Woo Jun Kim)
발명의 명칭: Optical system for forming optical path of oblique angle and method thereof
대표도면:
대표독립항:
1. An optical system capable of observing an object at different angles or positions without movement of an object and an observer, comprising: a first sub-system forming a first light path from a first point to a second point; and a second sub-system forming a second light path from the second point to a third point, wherein the first sub-system is configurable such that the light from the first point traveling at a first polar angle with respect to a fixed axis, which is defined by a perpendicular line between the first point to the second point, is transmitted to the second point at a second polar angle, wherein the second sub-system is configured to adjust a length of the second light path in response to a change in a length of the first light path in the first sub-system such that a combined length of the first light path and second light path remains constant, wherein the first sub-system includes a first lens for forming collimated light rays from the light entering the first sub-system from the first point, the first lens being configurable in a tilted orientation with respect to the fixed axis so that the light from the first point passing through the first lens travels in the first polar angle with respect to the fixed axis, wherein the optical system is configured as a microscope to observe the object in such a way that the light from the object sequentially passes through the first lens, the first sub-system, the second sub-system and a second lens, in which the first lens is an objective that is capable of being tilted within a predetermined range of polar angles relative to the fixed axis and rotatably positioned about the fixed axis in a predetermined azimuth angle.
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▪ US Design Patent No. D741,807 (Joinset Co, Ltd.)
디자인 명칭: Electrical contact terminal
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