Pioneer Corporation

National Center for Child Health and Development

Toshio Chiba

Hiroshi Yokota

Yoshiyuki Okuda

Hiromasa Yamashita

The object lensand the ocular lensare disposed in the lens barrel unitand the relay lens systemis disposed therebetween. The image sensoris disposed in the camera unitand the coaxial illumination unitis disposed therearound. The focus position shift memberis disposed at the image formation position Lin the lens barrel unit. The light from the coaxial illumination unitis imaged at the image formation position Land is shifted to a position Lby the focus position shift member. Since the position Lpositions at a position closer than a focus position, light through the object lensdiffuses to illuminate the object

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Tokyo, Japan

Toshio Chiba