Asahi Glass Company, Limited

Kazuaki Shimizu

Tetsuo Miyake

Ken Uemura

Yasunari Saito

Yukiko Nagashima

Takao Kurita

Masaru Mori

A method of measuring a distortion of a transmitting beam, characterized in that a transmitting beam is emitted from a beam generator and projected onto a screen as a bright spot, the bright spot is scanned over a surface of the screen, and a distortion of the transmitting beam is measured on the basis of a distance between a first location of the bright spot on the screen at a first time when the transmitting beam is incident on a beam receiving device in a specified incident direction upon transmitting through a measured body, and a second location of the bright spot on the screen at a second time when the transmitting beam is incident on the beam receiving device in the specified incident direction upon not transmitting through the measured body. A surface shape of a three-dimensional object may also be measured on the basis of a distance between a first location of the bright spot on the screen at a first time when the transmitting beam is incident on a beam receiving device in a specified incident direction upon being reflected from a surface of a three-dimensional measured body, and a second location of the bright spot on the screen at a second time when the transmitting beam is incident on the beam receiving device in the specified incident direction upon being reflected from a surface of a reference body. The present invention provides measurements having improved accuracy for objects of any size irrespective of the resolution of the beam receiving device.

Method and device for measuring distortion of a transmitting beam or a

An image of a person who has taken off his/her spectacles is taken on a video camera; then video signals for the image of the person are A/D-converted and stored into a video memory device as the digital signals; thereafter display signals are produced by synthesizing data for the image of the person and data for the spectacles frame as stored in the video memory device; and finally a state of the person with the spectacles frame being put on his/her face is displayed on a display device to thereby match the spectacles with the person.

Method for eyewear simulation and a device for its practice

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Yokohama, Japan

Kazuaki Shimizu