Difference between revisions of "DIY microscopy"

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[[File:webcamhack_step1.jpg|left|300px|Step1: get a standard webcam, make sure u got the right drivers for your OS]]
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[[File:webcamhack_step2.jpg|left|300px|Step2: break it open. of course take care not to destroy anything]]
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==== Magnification and Field of View ====
 
==== Magnification and Field of View ====

Revision as of 11:16, 6 June 2009

DIY microscopy

Introduction

To use a simple usb webcam as a microscope, only a few modifications are needed.

Diy microscope steps.jpg

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

Movie recorded with modified webcams: Hackteria in Berlin

Instructions

Step1:

Step1: get a standard webcam, make sure u got the right drivers for your OS

Step2

Step2: break it open. of course take care not to destroy anything

Magnification and Field of View

See: fieldofview for more details.

after completing the hack with the lenses, the magnification can be increased upto a field of view of 0.7 mm.

InversedMagnification.jpg Nematode.jpg

more about microscopy