DISTANCE MEASUREMENT LIGHT SOURCE AND ENDOSCOPE

Title:

DISTANCE MEASUREMENT LIGHT SOURCE AND ENDOSCOPE

Document Type and Number:

WIPO Patent Application WO/2017/212700

Kind Code:

A1

Abstract:

[Problem] To measure longer distances more accurately at the time of distance measurement employing the interference of light. [Solution] The disclosed distance measurement light source comprises at least: an n-type cladding layer and a p-type cladding layer each formed of a predetermined semiconductor; and an active layer that is located between the n-type cladding layer and the p-type cladding layer, and in which at least a partial region functions as an optical waveguide and light having a predetermined wavelength is emitted from one end surface of the active layer. In the optical waveguide, at the light emission end surface of the active layer, the direction in which the light travels in the optical waveguide is inclined at a predetermined angle with respect to the normal direction of the emission end surface.

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Inventors:

YOSHIDA HIROSHI (JP)
FUJITA GORO (JP)
TANAKA KENJI (JP)

Application Number:

PCT/JP2017/007661

Publication Date:

December 14, 2017

Filing Date:

February 28, 2017

Export Citation:

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Assignee:

SONY CORP (JP)

International Classes:

G01B11/00; A61B1/00; A61B1/06; G01B9/02; H01L33/14; H01S5/22

Foreign References:

JP2009283736A	2009-12-03
JP2012134327A	2012-07-12
JP2013181790A	2013-09-12
JP2010179042A	2010-08-19
US6118803A	2000-09-12

Attorney, Agent or Firm:

KAMEYA, Yoshiaki et al. (JP)

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