Otsuka Electronics Co., Ltd.

Yoshihiko Nishida

Yoshi Enami

Hiroyuki Sano

Nobuyuki Inoue

To provide a luminous body measurement apparatus capable of being easily downsized, with which luminance of a luminous body can be measured in a wide range on a measurement sphere. The luminous body measurement apparatus is configured to pivot a first arm and a second arm in a non-inverted posture to obtain luminance data of a sample at a plurality of image pickup positions in a first region of the measurement sphere, and is configured to pivot the first arm and the second arm in an inverted posture to obtain luminance data of the sample at a plurality of image pickup positions in a second region adjacent to the first region, the non-inverted posture being a posture under which a supporting portion is located on one side of an axis as viewed from a holding portion, the inverted posture being a posture under which the supporting portion is located on another side of the axis as viewed from the holding portion.

Luminous body measurement apparatus and luminous body measurement method comprising a control unit to pivot a first and a second arm to hold an image pickup device in plural postures

An optical characteristics measuring method for measuring optical characteristics of a subject, the optical characteristics measuring method including: a step of acquiring one or more captured images including the subject, using an image capturing apparatus that is located at a predetermined distance from the subject, and is configured to be displaceable relative to the subject, while maintaining the predetermined distance; and a step of creating, based on the one or more captured images thus acquired, a virtual image including the subject and acquired from one or more analysis points each located at a position other than a position on a plane that includes the trajectory of the image capturing apparatus.

Optical characteristics measuring method and optical characteristics measuring system

A light distribution characteristic measurement apparatus includes an imaging unit disposed at a predetermined distance from a light source, a movement mechanism that successively changes a positional relation of the imaging unit with respect to the light source, while keeping the distance between the light source and the imaging unit, and a processing module that calculates the light distribution characteristic of the light source. The processing module obtains a plurality of image data taken under a first imaging condition and a plurality of image data taken under a second imaging condition different from the first condition, and determines corrected image information corresponding to a relative position of interest, from first image information corresponding to the relative position of interest included in the image data taken under the first condition and second image information corresponding to the relative position of interest included in the image data taken under the second condition.

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Hirakata, Japan

Yoshihiko Nishida