| abstract |
There is provided an optical component that can be instantaneously confirmed that there is no eccentricity, even when it has a fine structure such as a Fresnel lens. The optical component of the present invention is an optical component having an optical portion and a peripheral portion thereof, and a recognition mark capable of recognizing eccentricity, expressed by irregularities, is provided at positions where surfaces of the peripheral portion are substantially symmetrical to each other. Have It is preferable that the two recognition marks are similar to each other, and that one of them has a size of 10 to 90% of the other. |