Maxell, Ltd.

Takayuki Suginome

Osamu Nakayama

Masashi Yoshimura

Susumu Shibasaki

Yasushi Kato

Akira Inaba

Hiroyuki Hirama

Yusuke Baba

A lens unit that includes an optical element including at least a lens group in which a plurality of lenses are arranged along an optical axis; and a cylindrical lens barrel having an inner accommodation space for accommodating and holding the optical element, and the lens group includes a first lens located closest to the object side thereof; and a second lens adjacent to the first lens on the image side thereof, and optical elements and/or the optical element and the lens barrel are bonded to each other in an airtight state, such that an inter-lens space between the first lens and the second lens is sealed to the outside.

Lens unit and camera module

An improved lens unit can be used in an in-vehicle camera or the like, in a condition where a forefront lens is exposed to the outside for a long time. Here, the resin lens within the lens unit has an improved durability at a high temperature. The lens unit has a plurality of lenses arranged side by side with the optical axes thereof aligned with each other. The lenses include glass lens and resin lens. The lens closest to the object is a glass lens which is closest to the object side and is coated with an ultra-hard film. Resin lenses each have a high temperature resistant reflection preventing film. The lens is a combined lens in which a lens and a lens are bonded together, and is then covered with a high temperature resistant reflection preventing film after bonding.

Lens unit having glass lens and combined resin lens

Lens unit having glass lens, resin lenses, and reflection preventing film

Growing community of inventors

Otokuni-gun, Japan

Takayuki Suginome