ILLUMINATION DEVICE FOR INSPECTION

WIPO Patent Application WO/2001/098760

A1

An illumination device for inspection by which a line-shaped light having a sharp outline can be obtained with a simple structure. The illumination device for inspection comprises a plurality of light emitting diodes (2) whose optical axes (2A) are arranged on one approximately straight line, a convex cylindrical lens (4) which focuses light emitted from the respective light emitting diodes (2) and converts them into a long and thin line-shaped light, a concave cyllndrical Lens (5) which converts the light supplied from the convex cylindrical lens (4) into an approximately parallel light, and a light shielding means (6) which cuts off light incident onto the outer circumferential surface of the convex cylindrical lens (4) or light emitted from the outer circumferential surface of the convex cylindrical lens (4).

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Yoneda, Kenji (462-1, Umeyacho Karasumanishiiru Mushakojidor, Kamigyo-ku Kyoto-shi Kyoto, 602-0933, JP)

PCT/JP2001/005157

December 27, 2001

June 15, 2001

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CCS INC. (374 Okakuencho, Shimodachiuri-agaru Karasumadori Kamigyo-ku Kyoto-shi, Kyoto, 602-8011, JP)
Yoneda, Kenji (462-1, Umeyacho Karasumanishiiru Mushakojidor, Kamigyo-ku Kyoto-shi Kyoto, 602-0933, JP)

G01B11/00; G01D5/26; G01N21/88; G02B3/06; G02B19/00; G02B27/00; (IPC1-7): G01N21/84; G01B11/24; G02B27/00

Yanagino, Takao (Noskmard building, 15-5 Miyahara 1-chome Yodogawa-ku Osaka-shi, Osaka, 532-0003, JP)

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