REVERSE PRISM TYPE OPTICAL DEVICE

摘要

The present invention relates to a reverse prism optical device and, more specifically, to a reverse prism optical device having improved reliability and durability. The reverse prism optical device comprises: a damage preventing protection sheet including a non-smoothing pattern of a random cross-section shape; and a reverse prism sheet which is formed on the upper part of the damage preventing protection sheet and includes multiple prism patterns protruding toward the damage preventing protection sheet. The damage preventing protection sheet is able to remove damage due to a contact between a light guide plate and the reverse prism sheet and to solve the problem of making a scratch on the light guide plate of an optical device or damaging a peak of the prism sheet due to assembly or press in use.