coma periodとは 意味・読み方・使い方

To provide a floating type optical pickup device, in which the generation of a coma aberration can be prevented even though it is used in a long period of time under the environment with large temperature change.例文帳に追加

温度変化の大きい環境で長時間用いても、コマ収差の発生を防ぐことができる浮上型光ピックアップ装置を提供することである。 - 特許庁

When determining that the detected temperature Th exceeds a specified temperature To (threshold), the control part switches a drive signal COM applied to the recording head from a first drive signal COMA for high-frequency minute vibration to a second drive signal COMB for low-frequency minute vibration, thereby making the recording head minutely vibrate at a low frequency during a rest period.例文帳に追加

また、検出温度Ｔｈが規定温度Ｔo（閾値）を超えたと判断すると、制御部は、記録ヘッドに印加する駆動信号ＣＯＭを、高周波微振動用の第１駆動信号ＣＯＭＡから低周波微振動用の第２駆動信号ＣＯＭＢへ切り換え、休止期間中は記録ヘッドを低周波微振動させる。 - 特許庁