亚洲综合另类一区二区三区,性做久久久久久久毛片,日本亚洲午夜福利视频,亚洲一区二区三区四区视频在线观看

撥號18861759551

你的位置:首頁 > 技術(shù)文章 > 了解中性密度濾鏡

技術(shù)文章

了解中性密度濾鏡

技術(shù)文章

Understanding Neutral Density Filters

Neutral Density (ND) filters are designed to reduce transmission evenly across a portion of a specific spectrum. ND filters are typically defined by their Optical Density (OD) which describes the amount of energy blocked by the filter. A high optical density value indicates very low transmission, and low optical density indicates high transmission (Equations 1 – 2). ND filters can be stacked to achieve a custom optical density. To calculate the final system OD, simply add the OD of each filter together.

 

 

Example 1: What is the transmission if OD 0.3 and OD 1.5 filters are stacked?

 

Example 2: How can I build a filter with 0.5% Transmission?

 

ODtotal of 2.3 could be created by stacking OD 0.3 + OD 2.0 or OD 1.0 + OD 1.3.

 

Types of Neutral Density Filters

There are two types of ND filters: reflective and absorptive. Reflective ND filters consist of thin film optical coatings, typically metallic, that have been applied to a glass substrate. The coating can be optimized for specific wavelength ranges such as UV-VIS or NIR. The thin film coating primarily reflects light back toward the source. Special care should be taken to ensure the reflected light does not interfere with the system setup. Absorptive ND filters utilize a glass substrate to absorb light by a specific percentage.

聯(lián)系我們

地址:江蘇省江陰市人民東路1091號1017室 傳真:0510-68836817 Email:sales@rympo.com
24小時(shí)在線客服,為您服務(wù)!

版權(quán)所有 © 2025 江陰韻翔光電技術(shù)有限公司 備案號:蘇ICP備16003332號-1 技術(shù)支持:化工儀器網(wǎng) 管理登陸 GoogleSitemap

在線咨詢
QQ客服
QQ:17041053
電話咨詢
0510-68836815
關(guān)注微信
大黑屌爆操日本女人| 国产一区二区三区免费观在线| 欧美黑屌操B内射冒白浆| 亚洲精品成人无码| 久久99国产中文| 女人18片毛片。| 看女生b免费视频| 欧美大鸡巴操大骚逼| 精品精品国产一区二区性色av| 99热这里只有精品亚洲| 中文字幕乱码一区二区三区麻豆| 野外日逼视频免费看| 狠狠五月激情综合去干网| 亚洲日韩不卡一区二区三区| 欧美日韩一区精品一区精品| 美女被插b在线观看| 狠狠色伊人亚洲综合成人| 成人 在线 欧美 日韩| 久久久久久久久黄片观看| 农村胖肥胖女人操逼视频| 亚洲av一区二区在线看| 国产一区二区三区免费观在线| 中文字幕在线观视频| 鸡巴插骚逼真舒服| 91孕妇精品一区二区三区| 日韩国产精品视频一区| 男人几把操女人嫩穴| 99久久国产综合精品女| 欧美丰满大屁股女人的逼被操视频| 国精品午夜福利视频导航| 美女最骚逼逼视频| 黑人大屌大战中国女| 操女人b直播软件| avtt天堂网先锋伦理| 日韩激情视频在线看免费| 女人182毛片a级毛片| 大鸡巴日小美女明星的BB| 在线免费观看一区| 日韩无码av三级片| 五月天婷婷一区二区三区久久| 非洲人粗大长硬配种视频|