Molded part and optical device using the molded part

摘要

A molded part prepared by a mold transfer method using a die, including a surface which includes a slope, wherein a direction of a normal line of the slope is different from a die releasing direction; and a pattern which is formed on the surface and which includes grooves located on a portion of the slope so as to extend along the slope in the slanting direction of the slope. An optical element, which has an anti reflection function, including the molded part mentioned above, wherein the interval between two adjacent grooves is not greater than the wavelength of light irradiating the optical element. An optical device including a light source configured to emit light; and the optical element mentioned above which processes the light emitted by the light source.

主权项

1. A molded part prepared by a mold transfer method using a die, comprising:
a surface which includes a slope, a direction of a normal line of the slope being different from a die releasing direction, and the surface including a reference point at which the normal line direction is substantially identical to the die releasing direction; and a pattern which is formed on the surface and which includes grooves located on at least a portion of the slope so as to extend along the slope in a slanting direction of the slope, the grooves including grooves linearly-extending in a radial direction from the reference point or a vicinity of the reference point toward the slanting direction of the slope, and the grooves including intervening grooves between the linearly-extending grooves spaced apart from the reference point or the vicinity of the reference point, at least one of the intervening grooves including an intersection such that no groove extends from the intersection toward the reference point or the vicinity of the reference point, each of the grooves having a width not greater than an interval between two adjacent grooves, and the width being substantially equal to the interval between the two adjacent grooves.