When the radius of an emitter picture is set as H and the maximum inclination of a light beam passing through the center of the emitter picture is set as U, the light source device whose H sinU is reduced by the correction lens 23 is provided. 発光体像の半径をH、発光体像の中心を通る光線の最大傾斜角をUとすると、補正レンズ23によりH sinUの小さい光源装置を提供できる。 - 特許庁
When the sine condition unsatisfied-amount in such a case is defined as SC=h1/sinU-f, sine condition unsatisfied-amounts at the ray height h1 in an effective diameter are independently designed for the use of the DVD and the CD, the balance of the off-axis coma aberrations for the use of the both disks, as a result, is realized. かかる場合における正弦条件不満足量をSC=h_1/sinU−fと定義した場合に、有効径内の光線高さh_1における正弦条件不満足量をDVDCDの使用時でそれぞれ振り分け設計を行うことで、結果として双方のディスク使用時における軸外コマ収差バランスを取る。 - 特許庁