Product Design: Compact Optical Probe

I need a full 3-D model for a handheld, tube-like optical probe that measures surface colour by reflectance. The device places a white LED at roughly 45 ° to a 1 × 1.5 cm test area, keeps a camera looking… (Budget: $15 – $25 USD, Jobs: 3D CAD, 3D Design, 3D Modelling, 3D Rendering, AutoCAD, Blender, Product Design, Solidworks)