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Step 4Setting the optic
The principle is to experiment the setting of your optic depending on the magnifying lens you have found. Take your light source and fix it firmly. Install a transparent object and try to project it at the distance you think your clock will be installed. You will find the distance you need from the screen to the lens in the final setup.
Be careful, your image will be inverted, so you will also need to reverse the LCD screen bottom-up and left to right.
Chose a light bulb that will cover the full width of the screen at the chosen distance. This could be a problem with some much focused light.
After finding the right distance, install the LCD screen and lens on supports to maintain them. I built an adjustable rail to be able to modify the focus depending on the distance to the wall to have a clear image. Of course you can build a more advance version of the optic, with a zoom but I am not an expert.
Be careful, your image will be inverted, so you will also need to reverse the LCD screen bottom-up and left to right.
Chose a light bulb that will cover the full width of the screen at the chosen distance. This could be a problem with some much focused light.
After finding the right distance, install the LCD screen and lens on supports to maintain them. I built an adjustable rail to be able to modify the focus depending on the distance to the wall to have a clear image. Of course you can build a more advance version of the optic, with a zoom but I am not an expert.
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