Title:
OBSERVATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2011/136382
Kind Code:
A1
Abstract:
Disclosed is an observation device which can acquire a phase image of a moving object at high speed and high accuracy even when using a photodetector in which the readout speed per pixel is low. An observation device (1) is provided with a light supply unit (10), a first modulator (20), a second modulator (30), a lens (40), a beam splitter (41), a photodetector (46), and a computation unit (50). The lens (40) inputs scattered light generated by a moving object (2) and generates a Fourier transform of the object (2). The photodetector (46) outputs data at each time point about each position in a u-direction, said data showing the sum of a v-direction of data which changes temporally at a frequency corresponding to the Doppler shift amount of the light which reaches each position of a light receiving surface across the lens (40). The computation unit (50) acquires an image of the subject (2) on the basis of the output of the photodetector (46).
Inventors:
IWAI Hidenao (1126-1 Ichino-cho, Higashi-ku, Hamamatsu-sh, Shizuoka 58, 〒4358558, JP)
岩井 秀直 (〒58 静岡県浜松市東区市野町１１２６番地の１ 浜松ホトニクス株式会社内 Shizuoka, 〒4358558, JP)
岩井 秀直 (〒58 静岡県浜松市東区市野町１１２６番地の１ 浜松ホトニクス株式会社内 Shizuoka, 〒4358558, JP)
Application Number:
JP2011/060562
Publication Date:
November 03, 2011
Filing Date:
May 02, 2011
Export Citation:
Assignee:
HAMAMATSU PHOTONICS K.K. (1126-1, Ichino-cho Higashi-ku, Hamamatsu-sh, Shizuoka 58, 〒4358558, JP)
浜松ホトニクス株式会社 (〒58 静岡県浜松市東区市野町１１２６番地の１ Shizuoka, 〒4358558, JP)
IWAI Hidenao (1126-1 Ichino-cho, Higashi-ku, Hamamatsu-sh, Shizuoka 58, 〒4358558, JP)
浜松ホトニクス株式会社 (〒58 静岡県浜松市東区市野町１１２６番地の１ Shizuoka, 〒4358558, JP)
IWAI Hidenao (1126-1 Ichino-cho, Higashi-ku, Hamamatsu-sh, Shizuoka 58, 〒4358558, JP)
International Classes:
G02B27/52; G01J9/02; G01N21/45
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (SOEI PATENT AND LAW FIRM, Marunouchi MY PLAZA 9th fl. 1-1, Marunouchi 2-chome, Chiyoda-k, Tokyo 05, 〒1000005, JP)
Claims: