US Patent 11256103 Optical device and wearable display device

The present disclosure includes a display element configured to emit imaging light, a main circuit board and the like being a circuit board configured to process a video signal, a board holder being a circuit board holder configured to fix the main circuit board and the like, and a harness coupled to the main circuit board, and the board holder fixes an end portion of the main circuit board in a state where the end portion protrudes to an optical path upstream of the display element. As a result, a space for avoiding interference is provided on the optical path upstream of the display element, namely, on a back surface side of the display element, while suppressing an increase in size of the device toward a lateral side and the like.