亮度衰減 的英文怎麼說
中文拼音 [liàngdùshuāijiǎn]
亮度衰減
英文
brightness decay-
Completely improve the water - retaining function of eye cells, instantly repair dry and ageing skin, effectively regenerate ageing cells, promote lymph circulation, eliminate toxin, activate skin tissue, firm skin, relieve eye fatigue and keep skin clear, tender, remove fine lines and make eyes bright and charming
全面促進眼部細胞的鎖水能力，迅速滋潤修護缺水、衰老皮膚；有效修復老化細胞，促進淋巴循環，排除眼部聚積的毒素，活躍眼部肌膚組織的緊密度與時刻充滿彈性，減輕眼部疲勞，維持皮膚透明細致，消除眼部細紋，使您的雙眼閃亮迷人。Since, point lights have position also, the distance from the surface to the light also affects the intensity. this is known as distance attenuation
因為，點光源有位置，所有光到達表面的距離會影響到光照亮度。這讓我們了解到距離衰減。For example if you have an object 1cm thick and you set the attenuation distance to 1cm, it means half the energy of all light rays passing through it will be absorbed, so the light falling through it will be half as bright on the other side
如果你有一塊厚1厘米的玻璃，設置衰減距離為1厘米，則表示光透過玻璃後有一半被吸收了，或理解為光的亮度降為原來的一半。Two wedge interferometers are designed that the thickness of one is higher than the other. so when the incident coherent light through the interferometers can acquire two fringe patterns which having space shift, but the incident incoherent light only result in consistent intensity signal. through a differentiating amplifier, two signals subtract which can eliminate noise of background and result in higher contrast ratio fringe signals. this method largely improves the system and the ability of detection. the spacing of line fringes is a function of incident laser wavelength, by analyzing, we can extract the wavelength of incident laser. the optical unit analyzing and results also simulated with matlab
當背景光入射時，直接穿過干涉儀，僅發生強度的衰減，在兩個探測平面上產生幅度基本一致的灰度信號，通過差分放大器，相消為零，從而抑制了背景干擾。當激光信號入射，穿過干涉儀時受到調制，在探測平面上產生干涉條紋。通過所設計的存在平均厚度差的雙楔形干涉儀，兩路干涉條紋圖案出現相對移位：在兩個探測平面對應的位置上，一路出現亮紋，另一路出現暗紋。分享友人