The Inner Workings of CD/DVD Drives

John C. Bean - WeCanFigureThisOut.org

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TECHNOLOGY

This podcast is drawn from the "Virtual Lab" of WeCanFigureThisOut.org. This Virtual Lab uses 3D virtual reality animations to explain electronics, microelectronics and nanotechnology. This podcast explains the miniaturized optical and mechanical components that make CD and DVD drive work. This includes a description of the clever systems that automaticaly focus and center the laser on the data tracks of the disk.

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This podcast is drawn from the "Virtual Lab" of WeCanFigureThisOut.org. This Virtual Lab uses 3D virtual reality animations to explain electronics, microelectronics and nanotechnology. This podcast explains the miniaturized optical and mechanical components that make CD and DVD drive work. This includes a description of the clever systems that automaticaly focus and center the laser on the data tracks of the disk.

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John C. Bean - WeCanFigureThisOut.org
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2K
Episodes

26
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The Inner Workings of CD/DVD Drives

The Inner Workings of CD/DVD Drives

A motor pulls the tray in and out

A rail and gear push a cam that lifts the motor, driving its spindle through the disk

All of the scenes together

And then there is the mechanism that moves the optical read/write head . . .

And this all fits inside a half cubic centimeter!

As the disk moves, the astigmatic beam changes shape on the new detector.

But disks are not flat . . . so things get complicated.

But most CD/DVDs use a more complicated scheme.

About

Information

The Inner Workings of CD/DVD Drives

Episodes

A motor pulls the tray in and out

A rail and gear push a cam that lifts the motor, driving its spindle through the disk

All of the scenes together

And then there is the mechanism that moves the optical read/write head . . .

And this all fits inside a half cubic centimeter!

As the disk moves, the astigmatic beam changes shape on the new detector.

But disks are not flat . . . so things get complicated.

But most CD/DVDs use a more complicated scheme.

About

Information