Machine Vision

Today’s advanced Automatic Optical Inspection (AOI) platforms incorporate the latest high resolution cameras to detect and measure defects on surfaces from ranging from silicon wafers to champagne bottles. Integral to this process are illumination systems that provide highly homogenized and precisely controlled illumination angles. Luminit diffusers enable both of these attributes with minimal transmission loss (approximately 8%) for either line scan or backlight applications

Line scan applications typically require LED or fiberoptic lightlines with a high level of uniformity across the long axis. The use of Luminit’s asymmetrical diffusers (i.e. 30x5º) in this application have been proven to improve uniformity beyond 95% when the long axis is oriented in parallel with the wider angle axis of the diffuser. These diffusers are available in custom widths and any lengths up to 1500 feet.

Highly uniform backlights are required for inspection of transparent objects (i.e. bottles, LCD glass, etc) to detect imperfections or cracks. Luminit’s symmetrical diffusers are currently in use in such applications to homogenize the backlight (either edge lit or direct back lit), resulting in more repeatable and accurate dimensional measurement of the part under inspection. Circular diffusers are available in any size up to 60” diagonal.

Machine Vision Diffuser Applications include:

• Lightline
• Backlighting
• Co-axial Lighting
• Ring Lighting