Difference between revisions of "DIY microscopy"
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== DIY microscopy == | == DIY microscopy == | ||
| + | |||
| + | '''Introduction''' | ||
[[File:diy_microscope_steps.jpg|300px]] | [[File:diy_microscope_steps.jpg|300px]] | ||
| − | To use a simple usb webcam as a microscope, | + | To use a simple usb webcam as a microscope, only a few modifications are needed. |
| − | + | 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). | |
[[File:amoebae_dark.gif|frame|left|dark-field image sequence (4 sec) of an amoebae recorded on a modified webcam]] | [[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|right|bright-field image sequence (4 sec) of an amoebae recorded on a modified webcam]] | [[File:amoebae_bright.gif|frame|right|bright-field image sequence (4 sec) of an amoebae recorded on a modified webcam]] | ||
| + | |||
| + | '''Instructions''' | ||
| + | |||
| + | ''Step1:'' | ||
| + | |||
| + | '''more about microscopy''' | ||
Revision as of 01:59, 2 June 2009
DIY microscopy
Introduction
To use a simple usb webcam as a microscope, only a few modifications are needed.
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).
dark-field image sequence (4 sec) of an amoebae recorded on a modified webcam
bright-field image sequence (4 sec) of an amoebae recorded on a modified webcam
Instructions
Step1:
more about microscopy
