The mark consists of the stylized term "REALTIME" above the stylized term "OPTICAL" to the right of a design element consisting of a sphere enclosed within a U-shaped semicircle comprised of a curved band and four attached quadrilaterals, two on each side, all of which appears above the stylized phrase "ENHANCING VISUAL REALITY"; the color black appears in the term "TIME" and in the two center quadrilaterals in the U-shaped semicircle; the color white appears in the shading on the sphere, in the space between the top two quadrilaterals in the U-shaped semicircle, in the shading on the top ot the top two quadrilaterals in the U-shaped semicircle and in the background of the mark; the color dark blue appears in the top two quadrilaterals in the U-shaped semicircle and in the term "REAL"; the color light blue appears in the sphere; the color dark gray appears in the term "OPTICAL", in the phrase "ENHANCING VISUAL REALITY" and in the bottom of the curved band comprising the semicircle; the color light gray appears in the top of the curved band comprising the semicircle and in the shadow beneath the U-shaped semicircle.