Retinal scanning display

A retinal scanning display comprising:

• a light source part which is configured to radiate a laser beam having intensity corresponding to a drive signal which contains an image signal;
• a scanning part which is configured to scan the laser beam radiated from the light source part in two dimensional directions;
• a projection part which is configured, at image forming time, to project the laser beam which is radiated from the light source part and is scanned by the scanning part on a retina of an eye of a viewer thus projecting an image on the retina;
• a light detection part which is arranged at a position on which the laser beam which is radiated from the light source part and is scanned by the scanning part is incident at timing detection time for detecting scanning timing of the scanning part other than at the image forming time;
• and
• a light blocking part which is arranged between the scanning part and the viewer and is configured to block a laser beam which is scanned by the scanning part and advances toward the eye of the viewer at the timing detection time;
• and
• a control part which is configured to control the radiation of the laser beam from the light source part based on the detected timing of the laser beam by the light detection part, wherein
• the control part is configured to allow the light source part to radiate the laser beam at the timing detection time with intensity which exceeds a maximum value of intensity of the laser beam which is radiated from the light source part at the image forming time.