輪帯回折板の英語

材質が異なる複数の回折格子１１，２１を積層した回折光学素子３において、該複数の回折格子１１，２１のうち少なくとも１つの回折格子は、輪帯状の複数の格子部を基板面に形成して構成されており、その中心輪帯２０１の格子部は、その周囲の周辺輪帯の格子部に比べて基板面からの格子高さが高いことを特徴とすること。例文帳に追加

In a diffraction optical element 3 made by stacking a plurality of diffraction gratings 11, 21 having different material, at least one diffraction grating of the plurality of diffraction gratings 11, 21 is constituted such that a plurality of zonal grating parts are formed on the base plate surface, wherein the grating part of the center zone 201 has a grating height from the base plate surface higher than the grating part of a peripheral zone on the circumference. - 特許庁

又、前記光学素子を平行平板（ＯＥ）とすれば、回折輪帯Ｒを形成する面が光軸に直交した平面となることから、対物レンズに回折構造を形成した場合に比べ、入射する光束におけるケラレの量を減らすことが出来、光情報記録媒体に集光される光束の光量を増大させることが出来る。例文帳に追加

In the case that the optical element is made into a parallel flat plate (OE), a surface on which a diffraction orbicular zone R is formed becomes a plane orthogonal to an optical axis, which reduces the number of vignetting in luminous flux, and increases the light quantity of the luminous flux condensed by the optical information recording medium compared to the case that the diffraction structure is formed in the objective lens. - 特許庁