Rays Optics Inc.

Chen-Yi Tsai

Chen-Cheng Lee

Kuo-Hsiang Hung

Meng-Wei Lin

Shin-Jen Wang

Yu-Chia Lu

Chih-Ling Lin

A lens including a filter, an aperture stop, and a lens set sequentially arranged along a first direction is provided. The filter includes a central region and a peripheral region. The central region has a first light transmission band for a wavelength range of a visible light and a second light transmission band for a wavelength range of an infrared light. The peripheral region surrounds the central region. The peripheral region has a third light transmission band for the wavelength range of the infrared light and is substantially opaque to the visible light, and an area of one portion of the central region surrounded by the peripheral region is tapered toward the first direction.

Lens

A lens including a lens barrel and five lens elements is provided. A relation between the amount of field curvature variation Saof a system caused by a thickness tolerance of a lens element in the lens and an amount of field curvature variation Saof the system caused by a change of a gap between the lens element and an adjacent lens element thereof is described as follows. Sais twice or less of Sa. Saand Saare both positive values or both negative values to render a better field curvature performance of the lens. A manufacturing method of the lens is also provided.

Lens and manufacturing method thereof

Growing community of inventors

Hsinchu County, Taiwan

Chen-Yi Tsai