英语词汇“optical centre”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

optical centre n. the point on the optical axis of a lens where all rays passing through it remain unrefracted.

ΚΠ

1801 Philos. Trans. (Royal Soc.) 91 41 The optical centre will be therefore..about one-tenth of an inch from the anterior surface: hence we have 22 hundredths, for the distance of the centre from the cornea.

1847 A. Smee Vision in Health & Dis. iii. 37 The adjustment of the exact centre of the glass to the optical centres is so important in practice, that I have contrived an instrument to measure the width accurately between these centres.

1989 Encycl. Brit. XXVII. 140/2 In the eyes of animals active during the day.., the lens is smaller; as a result, the optical centre is closer to the front of the eye.

单词	optical centre
释义	> as lemmas optical centre optical centre n. the point on the optical axis of a lens where all rays passing through it remain unrefracted. ΚΠ 1801 Philos. Trans. (Royal Soc.) 91 41 The optical centre will be therefore..about one-tenth of an inch from the anterior surface: hence we have 22 hundredths, for the distance of the centre from the cornea. 1847 A. Smee Vision in Health & Dis. iii. 37 The adjustment of the exact centre of the glass to the optical centres is so important in practice, that I have contrived an instrument to measure the width accurately between these centres. 1989 Encycl. Brit. XXVII. 140/2 In the eyes of animals active during the day.., the lens is smaller; as a result, the optical centre is closer to the front of the eye. extracted from opticaladj.n. < as lemmas
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> as lemmas