光学显微镜的使用[凯普生物仪器网论坛] u8e.com

光学显微镜基本知识

光学显微镜的使用规程
（一）实验时要把显微镜放在座前桌面上稍偏左的位置，镜座应距桌沿 6～7 cm左右。
（二）打开光源开关，调节光强到合适大小。
（三）转动物镜转换器，使低倍镜头正对载物台上的通光孔。先把镜头调节至距载物台1～2cm左右处，然后用左眼注视目镜内，接着调节聚光器的高度，把孔径光阑调至最大，使光线通过聚光器入射到镜筒内，这时视野内呈明亮的状态。
（四）将所要观察的玻片放在载物台上，使玻片中被观察的部分位于通光孔的正中央，然后用标本夹夹好载玻片。
（五）先用低倍镜观察（物镜10X、目镜10x）。观察之前，先转动粗动调焦手轮，使载物台上升，物镜逐渐接近玻片。需要注意，不能使物镜触及玻片，以防镜头将玻片压碎。然后，左眼注视目镜内，同时右眼不要闭合（要养成睁开双眼用显微镜进行观察的习惯，以便在观察的同时能用右眼看着绘图），并转动粗动调焦手轮，使载物台慢慢下降，不久即可看到玻片中材料的放大物像。
（六）如果在视野内看到的物像不符合实验要求（物像偏离视野），可慢慢调节载物台移动手柄。调节时应注意玻片移动的方向与视野中看到的物像移动的方向正好相反。如果物像不甚清晰，可以调节微动调焦手轮，直至物像清晰为止。
（七）如果进一步使用高倍物镜观察，应在转换高倍物镜之前，把物像中需要放大观察的部分移至视野中央（将低倍物镜转换成高倍物镜观察时，视野中的物像范围缩小了很多）。一般具有正常功能的显微镜，低倍物镜和高倍物镜基本齐焦，在用低倍物镜观察清晰时，换高倍物镜应可以见到物像，但物像不一定很清晰，可以转动微动调焦手轮进行调节。
（八）在转换高倍物镜并且看清物像之后，可以根据需要调节孔径光阑的大小或聚光器的高低，使光线符合要求（一般将低倍物镜换成高倍物镜观察时，视野要稍变暗一些，所以需要调节光线强弱）。
（九）观察完毕，应先将物镜镜头从通光孔处移开，然后将孔径光阑调至最大，再将载物台缓缓落下，并检查零件有无损伤（特别要注意检查物镜是否沾水沾油，如沾了水或油要用镜头纸擦净），检查处理完毕后即可装箱。

In my personal louis vuitton opinion, things happen for replica handbags their own reasons. Counterfeiting handbags goods may never be fully stopped. There are gucci handbags thousands of customers are gucci wallets willing to buy them as long as they are not in chanel handbags such a strong desire to pursue exactly louis vuitton handbags the same quality. O the side of the LVMH, it is chanel wallets also reasonable for them to fight against wholesale handbags items, for they might ruin its high reputation louis vuitton walletsand destroy its flourishing business.

To realize your replica handbags dream actually is not a louis vuitton difficult thing. Even fake handbags if you don't have enough money for gucci handbags a full rate Louis Vuitton Bag, there gucci wallets are items on sales. Our online chanel handbags store is a good choice for you. It can chanel wallets not only help you save money, but also satisfy your needs louis vuitton handbags at the same time. Pay much attention to the sales information; you can easily louis vuitton wallets buy the one you like. Since the product resource is very rich, I am very sure you wholesale handbags can find your favorite one. Want to be a fashionable girl? Then stop hesitating.

Luckily,Swiss replica watches come in the market and meet fake watches the mass market and the rolex watches needs of many common people. They offer a very good chance for replica rolex those average people with a limited budget for the wholesale watches chance to experience the luxury ladies watches that the original watch boasts.As a prominent watch brand fake breitling in the whole world of fake tag heuer making, the brand will surely and fake cartier continually present to the world with many more fake omega excellent watches to its watch lovers and collectors.

回复标题：
上传附件：

	签名：不显示显示

主题：光学显微镜的使用

光学显微镜的使用