Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Panasonic Intellectual Property Management Co., Ltd.

Shuichi Horiguchi

Yoshihiko Asai

Tomoyoshi Nakaigawa

Kanji Mutou

Yasuji Nakamura

Yuichiro Mori

Masahito Oka

Masafumi Mizuno

Gentarou Irisawa

A color separation prism includes a filter, a first prism, a second prism, and a third prism. The first prism allows incidence of light transmitted through the filter, and the first reflective film reflects a first color component of the visible light and a part of the invisible light, among the light beams incident on the first prism. The second prism emits the light reflected by a second reflective film, and the second reflective film reflects the second color component of the visible light and a part of the invisible light, among the light beams incident on the second prism. The third prism emits the light transmitted through the second reflective film. The first reflective film and the second reflective film allocate the invisible light and the visible light emitted from each prism so as to obtain approximately uniform amount of the light.

Color separation prism and imaging device

A variable focal lens which does not require a reduction of a zoom factor and eliminates an origin sensor is provided. A microcomputerfunctions as a focus adjustment section which controls a stepper motorto move a focusing ringfor a focus adjustment. The microcomputercauses the focusing ringto move by a first moving distance in a first moving direction toward one of a FAR side and a NEAR side, and then to move the focusing ringby a second moving distance in a second moving direction opposite to the first moving direction, and set the point where the focusing ring reaches after the movement in the second moving direction as a reference point for adjustment, and the microcomputercauses the focusing ringto move from the reference point for adjustment in the first moving direction within a range equal to or less than the second moving distance to carry out the focus adjustment. This configuration eliminates margins provided by software at ends of the movement range of the focusing ring

Variable focal lens and imaging apparatus

An eye image pickup apparatus includes an image pickup unit, a guide mirror, a range sensor, and an infrared illuminating section. The image pickup unit includes an objective lens, an image pickup element such as a CCD, a shooting section and a light guide section as a basic configuration, and the image pickup unit shoots an image of an eye of a person. The guide mirror guides a subject to a shooting position. The range sensor measures the distance between the image pickup apparatus and the subject. The infrared illuminating section illuminates the subject. Rough guidance of the user is made using the guide mirror and fine alignment is made by using a guiding visible light obtained from the light guide section.

Eye image pickup apparatus and entry/leave management system

Iris recognition camera

Growing community of inventors

Kanagawa, Japan

Shuichi Horiguchi