Title:
【発明の名称】画像計測装置
Document Type and Number:
Japanese Patent JP2879003
Kind Code:
B2
Abstract:
An image measuring apparatus for measuring an image of a tooth or gum applies the radiation of a laser beam to permit extremely quick, reliable, safe detection of dental caries and other dental pathological conditions. The low incident power of the laser radiation would not cause damage or pain to the tissue, such as the tooth or gum. The image measuring apparatus is equipped with a light source which emits light having at least a wavelength in a range of 500 nm or more to less than 600 nm; it uses the light emitted from the light source to obtain 2-dimensional images or computed tomographic images of a tooth or gum from the light, which has been transmitted through the tooth or gum, by using an optical heterodyne detection method.
Inventors:
BARASHIGAMANI DEBARAJI
KOBAYASHI MASAKI
TAKEDA MOTOHIRO
USA CHIKASHI
ISHIHATA HIROSHI
HORIUCHI HIROSHI
INABA FUMIO
KOBAYASHI MASAKI
TAKEDA MOTOHIRO
USA CHIKASHI
ISHIHATA HIROSHI
HORIUCHI HIROSHI
INABA FUMIO
Application Number:
JP29844795A
Publication Date:
April 05, 1999
Filing Date:
November 16, 1995
Export Citation:
Assignee:
SEITAI HIKARI JOHO KENKYUSHO KK
International Classes:
G01B11/00; A61B5/00; A61B10/00; A61C19/04; G01N21/17; G01N21/27; G02F2/00; G06T1/00; H01S5/06; (IPC1-7): G01N21/27; A61B10/00; A61C19/04
Domestic Patent References:
| JP3111737A | ||||
| JP527844A | ||||
| JP6129984A | ||||
| JP75101A | ||||
| JP970404A |
Other References:
Ｊ．Ｏｐｔ．Ｔｅｃｈｎｏｌ．６２（８）（１９９５）ｐ５１６−５２１（Ｆｉｇ．７）
Attorney, Agent or Firm:
Masaki Yamada (1 person outside)