A wide viewing angle optical apparatus is disclosed, wherein two wide viewing angle optical lenses are combined in left and right ends of goggles. Each of the wide viewing angle optical lenses is a cylinder being narrow in the front and wide in the back, and having outer and inner lateral surfaces. A first free form surface and a second free form surface for correcting aberration are respectively formed on the outer lateral surface and the inner lateral surface of each wide viewing angle optical lens, such that an optical path of an incident light projecting from an outer side and diagonal back of each wide viewing angle optical lens toward the first free form surface would pass through the second free form surface for being projected onto the pupil of a wide viewing angle optical apparatus wearers eye. According to the abovementioned structure, the present invention can refract light so as to allow the wearer to see scenes in a wider angle, thereby achieving the object of safety with a wide viewing angle.一種廣視角光學裝置,是在護目鏡的左、右兩端結合兩廣視角光學鏡片,廣視角光學鏡片其中各廣視角光學鏡片是前窄後寬的柱體並具有內、外兩側面,在各廣視角光學鏡片的外側面與內側面分別形成修正像差的一第一自由曲面與一第二自由曲面,使得由各廣視角光學鏡片的外側與斜向後方朝第一自由曲面入射光線的光路穿過第二自由曲面後投射在廣視角光學裝置配戴者的瞳孔處;本發明藉由前述構造,能將光線折射而使配戴者可看到更廣角度之景象,以達到廣視角之安全目的。10‧‧‧護目鏡11‧‧‧廣視野投射區域20‧‧‧廣視角光學鏡片21‧‧‧第一自由曲面22‧‧‧第二自由曲面23‧‧‧前端
