IR illumination module for MEMS-based eye tracking

An iris recognition illumination system comprising:

• a red, green, blue (RGB) laser device that is associated with at least a first collimating optic and that generates RGB laser light;
• an infrared (IR) illumination device that is associated with a second collimating optic and that generates IR light, the IR illumination device being positioned at a fixed position relative to the RGB laser device on the iris recognition illumination system;
• a display module assembly (DMA) that includes a microelectromechanical scanning (MEMS) mirror system, wherein the DMA optically combines the IR light generated by the IR illumination device with the RGB laser light generated by the RGB laser device to generate combined light, and wherein the combined light is directed towards an iris of a user's eye via a waveguide;
• and
• one or more photodetector(s) that are configured to detect reflected light that is reflected off of the user's iris as a result of the combined light being directed towards the user's iris via the waveguide, wherein the one or more photodetector(s) include at least an IR detector configured to detect reflected IR light included in the reflected light, the reflected IR light being usable by the iris recognition illumination system to perform iris recognition.

An iris recognition illumination system comprising:

• a red, green, blue (RGB) laser device that is associated with at least a first collimating optic and that generates RGB laser light;
• an infrared (IR) illumination device that is associated with a second collimating optic and that generates IR light, the IR illumination device being positioned at a fixed position relative to the RGB laser device on the iris recognition illumination system, wherein a focal length of the IR light is different than a focal length of the RGB laser light;
• a display module assembly (DMA) that includes a microelectromechanical scanning (MEMS) mirror system, wherein the DMA optically combines the IR light generated by the IR illumination device with the RGB laser light generated by the RGB laser device to generate combined light, and wherein the combined light is directed towards an iris of a user's eye via a waveguide;
• and
• one or more photodetector(s) that are configured to detect reflected light that is reflected off of the user's iris as a result of the combined light being directed towards the user's iris via the waveguide, wherein the one or more photodetector(s) include at least an IR detector configured to detect reflected IR light included in the reflected light, the reflected IR light being usable by the iris recognition illumination system to perform iris recognition.