Abstract: An aperture module is provided. The aperture module includes a plurality of blades configured to interlock with each other to form a through-hole, a rotator on which the plurality of blades are disposed, a first base on which the rotator is disposed, a second base connected to the first base, and a driving unit disposed on the second base and configured to provide a driving force to move the rotator in a direction that intersects an optical axis direction. The first base is configured to move in an optical axis direction with respect to the second base.

Abstract: A timing cover for an engine includes a plurality of dome-shaped embossed portions formed at positions of the timing cover that are most susceptible to vibration, based on an analysis of vibration modes of the timing cover.

Abstract: Disclosed herein is a variable lamination manufacturing process and apparatus. The method comprises the step of coating strip-shaped material with an adhesive while the strip-shaped material is fed. Thereafter, the strip-shaped material being fed is cut into material pieces of a variable width, variable inclinations and a variable length in accordance with the three-dimensional computer aided design data of a three-dimensional product using a linear heat source. The cut material pieces are stacked on a moving table to be positioned in the corresponding positions of the three-dimensional product. Finally, the stacked cut material pieces are pushed to bond one piece to anther.

Abstract: To enhance accuracy of the size and the shape of manufactures, and to shorten the time of operation, there is provided a method for manufacturing a 3D model comprising steps of designing the 3D model and collecting shape data of the 3D model slicing the 3D model into several layers in height, dividing each of the layers into several sublayers so that a sublayer is formed by depositing a material at once, depositing a material in accordance with shape data in relation to a sublayer divided from one layer of the 3D model, and deciding whether the one layer of the 3D model has been completed. The method is conducted using computer-aided design and computer aided manufacturing system including a variable deposition manufacturing apparatus.

Abstract: Disclosed herein is a variable lamination manufacturing process and apparatus. The method comprises the step of coating strip-shaped material with an adhesive while the strip-shaped material is fed. Thereafter, the strip-shaped material being fed is cut into material pieces of a variable width, variable inclinations and a variable length in accordance with the three-dimensional computer aided design data of a three-dimensional product using a linear heat source. The cut material pieces are stacked on a moving table to be positioned in the corresponding positions of the three-dimensional product. Finally, the stacked cut material pieces are pushed to bond one piece to anther.