装在物镜的后焦平面处,它分为两部分,一是通过直射光的部分,为半透明的环状,叫共轭面;另一是通过衍射光的部分,叫“补偿面”。
相差显微镜的关键部件是环形光阑(annular diaphragm)和环形相板(annular phase plate)环形光阑位于聚光器或光源上,使透过聚光器的光线形成空心光锥,聚焦到标本上;环形相板位于物镜上,相板上有环形区,制成凹槽或凸...
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一架显微镜一般都带了一套这样的具有不同的吸性的相板。
Generally a microscope will come with an assortment of these phase plates having different absorptions.
大约在一年之前,我在一个找客户身上尝试过同样的创意。目的是为了演讲会做一个大的相板。
About a year ago, I tried a similar idea with portrait clients - the goal was to create an enlarged contact sheet from the session as the objective.
尽管商业化的太阳能电池业务可以追溯到50年以前,但是太阳能板在成本的考量上依旧无法与生物能源相竞争。
Although the commercial solar-cell business dates back almost 50 years, solar panels still cannot compete with fossil fuels when it comes to generating electricity relatively cheaply.
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