Patent ID: 8487233
Filing Date: 2013-07-16
Classification: G02B

Abstract:
1. Vision equipment, comprising: a translucent optical strip covering all or some of a visual field of a user of the equipment; and a device for projecting images onto the strip in at least one zone of the visual field of the user, called an image-projection zone, wherein the optical strip comprises a plurality of zones covered by a layer of photochromic material with a variable coefficient of light transmission, one of the plurality of zones covering at least the image-projection zone, the vision equipment further comprises a variable coefficient of light transmission controller including a photochromic reaction activator that activates at least one of the plurality of zones of the optical strip in order to control the variable coefficient of light transmission of a zone configured to receive status information and to control the variable coefficient of light transmission of each of the plurality of zones independently of one another as a function of the status information, and the photochromic reaction activator includes a plurality of ultra-violet light-emitting diodes arranged to control the variable coefficient of light transmission of the plurality of zones simultaneously and independently.