Optical Lenses

HOYA's optical lenses and optical glass are used widely in products such as cameras and video camcorders. HOYA’s optical lenses can be categorized into two basic types: polished glass lenses (spherical lenses) and molded glass lenses (aspherical lenses).
HOYA’s aspherical lenses are formed at high temperatures in metal molds from molten optical glass. HOYA makes full use of its proprietary technologies and long years of experience in their production—from glass formation to lens molding. Because of their sophisticated shapes, aspherical lenses offer excellent correction for aberrations, making it possible to shorten focal distances and reduce the number of lens elements.
This contributes to higher functionality for optical devices like digital cameras, as well as to the smaller size and lower weight of such devices.

HOYA Corporation USA site 

Small-size lenses

HOYA produces DVD/CD-compatible hybrid lenses, blu-ray pickup lenses and plastic lens units for digital cameras. Blu-ray objective lens uses ultra-high-precision molds and shaping technology to achieve stable performance even from a plastic lens.

Opto Device Division site 

Lens Units for Digital Cameras

HOYA produces optical lens units for digital cameras under Pentax brand, and is supplying custom-specified lenses to digital camera manufacturers and their ODM and OEM partners both worldwide. In particular, our patented sliding lens system has contributed greatly to reducing the size of compact digital cameras with high-zoom lenses.