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A Class 3R laser is considered safe if handled carefully, with restricted beam viewing. With a class 3R laser, the MPE can be exceeded, but with a low risk of injury. Visible continuous lasers in Class 3R are limited to 5 mW. For other wavelengths and for pulsed lasers, other limits apply.
Accordingly, near-eye display system 14 also includes waveguide 32, an optic configured to receive the display image and to shift the display image into the wearer's field of view. [0025] Waveguide 32 may be substantially transparent to external imagery received normal to its front surface 34.