This is a mount for the Sharp GP2Y0A41SK0F or Sharp GP2Y0A21YK Infrared Sensor. This is useful if you want to mount your sensor inside of something, instead of on the outside.
I've provided a variety of vector formats. One of them should work with your laser cutter / software.
There's a blog post with more info: http://rasterweb.net/raster/2014/11/19/ir-proximity-sensor-mount/
Use a laser cutter and 3mm (or 1/4") material. Wood or acrylic should work. You'll need to glue it together.