Lens (optics)
A lens is an optical device with perfect or approximate axial symmetry which transmits and refracts light, converging or diverging the beam. A simple lens is a lens consisting of a single optical element. A compound lens is an array of simple lenses (elements) with a common axis; the use of multiple elements allows more optical aberrations to be corrected than is possible with a single element. Manufactured lenses are typically made of glass or transparent plastic. Elements which refract electromagnetic radiation outside the visual spectrum are also called lenses: for instance, a microwave lens can be made from paraffin wax.
The archaic spelling lense is sometimes seen, but Merriam-Webster's medical dictionary is the only major dictionary that considers this to be correct.[1]
From Wikipedia, the free encyclopedia
美容室・美容院をお探しの方限定!全国2687店舗の中から地域やキーワードでお好みの美容院・美容室を探せますカラー・パーマ・縮毛矯正・エクステなどメニュー別特集やヘアスタイルカタログ、カットモデル募集情報も!
SEO対策 シンガポールドル 包茎 セルライト 米 販売 医者 結婚 ゴルフボール 社員 教育 足やせ パチンコ 必勝法