摘要:
Provided is an advanced grid structure manufactured by a lamination step of laminating a first tape prepreg group, a second tape prepreg group, and a third tape prepreg group repeatedly in the stated order on a forming die, in which grooves in a lattice shape are formed in three directions, so as to provide crossing regions in which two tape prepreg groups overlap each other, and a heating forming step of forming a laminate by heating under pressure. In the lamination step, the first tape prepreg group, the second tape prepreg group, and the third tape prepreg group are respectively laminated as one layer in crossing regions so that a tape width is maintained, and laminated in non-crossing regions in a state of being folded as two layers in a width direction thereof.
摘要:
An optical mirror comprising: a mirror body having a reflective surface; a waffle structure that is connected to a surface opposite to the reflective surface of the mirror body, the waffle structure comprising partition walls, wherein at least one of the partition walls includes a heat generation part; and a power supply part configured to supply power to the heat generation part, wherein the partition walls and the mirror body are made of a same material.
摘要:
Provided is an advanced grid structure having high strength and low thermal expansion characteristics. The advanced grid structure includes: a first grid side group extending in the same direction as a first tape prepreg group and constituting a side of a grid group; a second grid side group extending in the same direction as a second tape prepreg group and constituting a side of the grid group; and a third grid side group extending in the same direction as a third tape prepreg group and constituting a side of the grid group, in which: a structure ratio of the advanced grid structure is larger than 0 and 0.107 or less, the structure ratio being obtained by dividing a grid side width by an interval between a center point of a region where the second grid side group and the third grid side group cross each other and a center of a region which is closest to the region where the second grid side group and the third grid side group cross each other, and where the second grid side group and the third grid side group cross each other; and the carbon fibers have a tensile modulus of elasticity of 280 GPa or more and 330 GPa or less.
摘要:
An advanced grid structure has high strength and low thermal expansion, and includes first, second, and third tape prepreg groups each including a plurality of tape prepregs. Each tape prepreg includes carbon fibers that are aligned in a first, second, or third direction and that form respective first, second, and third grid sides. A plurality of each the first, second, and third grid sides are spaced apart at equal intervals in the respective first, second, or third direction to form respective first, second, and third grid side groups. A structure ratio of the advanced grid structure is larger than 0 and 0.107 or less, 0.053 or less, or 0.040 or less. A thermal expansion coefficient of the advanced grid structure is −0.9 ppm/K or more and 0.9 ppm/K or less. The carbon fibers have a tensile modulus of elasticity of 280 GPa or more and 330 GPa or less.