Boots – shoes – and leggings
Patent
1994-01-12
1994-10-04
Smith, Jerry
Boots, shoes, and leggings
D16132, G06F 1546
Patent
active
053532317
ABSTRACT:
The present invention relates to a method of fabricating a reflection mirror formed by sticking together a plurality of mirror segments for use on a reflecting telescope or the like. The mirror segments are arranged so that the thermal deformation of the reflecting mirror is limited to the least possible extent. The method comprises steps of: setting a plurality of sample points on the mirror surface; developing a matrix connecting a coefficient of the thermal expansion (CTE) vector having the deviations of the respective CTEs of the mirror segments from the average CTEs obtained by averaging the CTEs of the mirror segments as components corresponding to the respective positions of the mirror segments with the displacements of the sample points; selecting a vector making the sum of squares of the displacements a minimum among those obtained by rearranging the components of the CTE vector; and arranging the mirror segments according to the positions of the components of the selected vector.
REFERENCES:
patent: 4287421 (1981-09-01), DeBaryshe et al.
patent: 4484798 (1984-11-01), Howden
patent: 4850708 (1989-07-01), Moore et al.
patent: 5085497 (1992-02-01), Um et al.
patent: 5096281 (1992-03-01), Windebank et al.
patent: 5168673 (1982-12-01), Nemir et al.
Krim et al., "Accommodating CTE Discontinuities in a ULE Mosaic Mirror", SPIE vol. 1236 Advanced Technology Optical Telescopes IV (1990), pp. 605-614.
Asari Kouki
Mikami Izumi
Sasaki Aki
Mitsubishi Denki & Kabushiki Kaisha
Smith Jerry
Tousi Cameron H.
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