Whiteboard

Welcome to the leddev whiteboard page! This is where I will be sticking up all sorts of odds and ends related to LEDs and LED modules. You never know whats going to be here. Cool LED models, LED pictures, illustrations, tutorials, etc… Whatever really doesn’t work into a blog post, you will find here. Hopefully this will become a valued resource to my readers or at least an interesting page to visit from time to time. We’ll see.

Freebies

Here’s a free download for you. Its a cool technical illustration I did showing the various parts of a typical high-power LED module. The images was done for the web so it is only 72dpi but it is a large 2000 x 1171 pixels. Just click on the image which will load it on a separate page. Once there, right-click the image and chose “Save Image As…” to save it on your computer locally. You may use it as you see fit. It would be greatly appreciated if you gave a credit and/or a link back to this blog. Enjoy! 8)

2000 x 1171, 494 kb

This is a high-resolution (300 dpi) pencil sketch-style illustration of a typical dual-chip surface mount (SMT) LED package with a clear lens. This is a very common LED that you might find in an MP3 player or cell phone. I am not sure what you might do with this illustration but feel free to download it free. See instructions above.

2000 x 1239, 972 kb

Engineering Class

Here’s a case study (uggh!Pardon the pun) in the works:

Our engineering department and myself would be very interested to get any feedback you might have on tackling the issue of shelf lighting (i.e. under shelf lighting) for product illumination on low-clearance shelves in a display case. The problem is this particular customer wants uniform or near uniform illumination of the top and front face of the product from shelf to shelf when the clearance between shelves is about 10 inches or so. They currently use and are not happy with fluorescent lighting which have a short life cycle in a heated environment and cannot be adjusted for color-temp or dimmed etc… so they want to switch to LEDs. When your product is so close to the lights, what is the best way to spread the illumination across the top and front face? Have any of you done something similar? We have our own thougts on this but would love to get your’s.

Here is a 3D Sketchup render (click to shoot over to my Architectural Lighting blog for a quick article about Sketchup and the Kerkythea Renderer) of the type of case (typical, not exact) this would be employed in:

Click thumnail to view full size image

..and here is the exact same Sketchup 3D model and scene rendered in Kerkythea:

Click thumbnail to view full size image