Difference between revisions of "DIY microscopy"
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− | [[File:amoebae_dark.gif]] | + | == DIY microscopy == |
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+ | [[File:diy_microscope_steps.jpg|300px]] | ||
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+ | To use a simple usb webcam as a microscope, afew modifications are needed which are described in detail on the [[diy_microscopy]] page. | ||
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+ | in short, a small hack to the optics of a standard webcam with an adjustable focus-lens, allows to create video data, with a magnification of around 100 to 400x (depending on the model) at a working distance of a few mm. the highest magnifications can be achieved by inverting (putting upside down) the lens. addition of good lighting by the use of leds allows to create images using a bright-field method (shine through the stuff) or dark field method (look at the reflections and scattering). | ||
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+ | [[File:amoebae_dark.gif|frame|left|dark-field image sequence (4 sec) of an amoebae recorded on a modified webcam]] | ||
+ | [[File:amoebae_bright.gif|frame|left|bright-field image sequence (4 sec) of an amoebae recorded on a modified webcam]] |
Revision as of 01:50, 2 June 2009
DIY microscopy
To use a simple usb webcam as a microscope, afew modifications are needed which are described in detail on the diy_microscopy page.
in short, a small hack to the optics of a standard webcam with an adjustable focus-lens, allows to create video data, with a magnification of around 100 to 400x (depending on the model) at a working distance of a few mm. the highest magnifications can be achieved by inverting (putting upside down) the lens. addition of good lighting by the use of leds allows to create images using a bright-field method (shine through the stuff) or dark field method (look at the reflections and scattering).