I Collimating a fibre-coupled LED light source

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A user seeks simulation software to visualize the collimation process of a fibre-coupled LED light source using an achromatic doublet lens. They understand that positioning the lens at its focal length will collimate the light. Suggestions include using online tools for visualization, particularly for ray optics, which are suitable unless working with mid-infrared LEDs. The discussion emphasizes the importance of clarity on the intended outcomes of the simulation. Overall, the conversation revolves around finding effective tools for visualizing optical processes.
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Summary:: I have a fibre coupled LED light and an achromatic doublet lens, I know by placing the collimating lens at a distance equal to the focal length of the lens, the light will get collimated. But is the a simulation software available where I can input the parameters I can so as to visualize the process.

I have a fibre coupled LED light and an achromatic doublet lens, I know by placing the collimating lens at a distance equal to the focal length of the lens, the light will get collimated. But is the a simulation software available where I can input the parameters I can so as to visualize the process.
 
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Can you be more specific? What are you hoping to get out of the simulation? If it's just a visualization aid, then there are online tools that can help you. Unless your LED is in the mid infrared, ray optics should be fine.
 
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