Title:
LIMITED AREA REFLECTION TYPE OPTICAL SENSOR, AND ELECTRONIC DEVICE
Document Type and Number:
Japanese Patent JP2018124285
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a limited area reflection type optical sensor and electronic device that can highly accurately detect such an object in which a distance to a surface to be measured varies by broadening a detection range in far and near directions, and are simply configured.SOLUTION: A lens for emerging light 12A is provided in an optical path of emerging light L1, and a lens for reflection light 22 is provided in an optical path of reflection light L2. The lens for emerging light 12A is provided with: a first curvature surface 12ba that has a first curvature on a side opposite a light reception unit side; and a second curvature surface 12bb that has a second curvature smaller than the first curvature on the light reception unit side relative to the first curvature surface 12ba. The lens for reflection light 22 is provided with: a fourth curvature surface 22ba that has a fourth curvature on a side opposite a light emitting unit side; and a fifth curvature surface 22bb that has a fifth curvature smaller than the fourth curvature on the light emitting unit side relative to the fourth curvature surface 22ba.SELECTED DRAWING: Figure 1
Inventors:
MUROTA KATSUYUKI
TAISHI YOSHITAKA
HOSOKAWA HAYAMI
SUGIMOTO MASA
TAISHI YOSHITAKA
HOSOKAWA HAYAMI
SUGIMOTO MASA
Application Number:
JP2018042112A
Publication Date:
August 09, 2018
Filing Date:
March 08, 2018
Export Citation:
Assignee:
OMRON TATEISI ELECTRONICS CO
International Classes:
G01S7/481; G01J1/02; G01V8/12; H01H35/00
Domestic Patent References:
| JPS60155144U | 1985-10-16 | |||
| JPS5992372A | 1984-05-28 | |||
| JP2007221491A | 2007-08-30 | |||
| JPH02306513A | 1990-12-19 | |||
| JPH02114414A | 1990-04-26 |
Foreign References:
| EP1408343A1 | 2004-04-14 |
Attorney, Agent or Firm:
Nao Murakami