Article of headwear providing supplemental wide angle peripheral vision

In an article of headwear providing supplemental wide angle peripheral vision, wherein the user's eye has a normal viewing axis, the combination of a device and means for clamping the device on the article of headwear, the device including a body disposed in front of the user's face and arranged substantially horizontally between the nose bridge and temple of the user, means for adjusting the device relative to the user, the body including respective end portions including a first end portion disposed substantially adjacent to the user's nose bridge but offset vertically with respect to the normal viewing axis of the user's eye, a reflective means carried by the first end portion of the body, so that the user's eye may shift vertically up or down away from the normal viewing axis to look at the reflective means, the reflective means being disposed in a plane which is angled with respect to the line of sight of the user's eye in looking at the reflective means, thereby establishing an optical path alternatively of the normal viewing axis, the body further having a second end portion remote from the first end portion thereof, a divergent lens means carried by the second end portion of the body, optical transmission means in the optical path between the divergent lens means and the reflective means, and a converging lens means carried by the body and arranged between the user's eye and the divergent lens means.