Optical measuring device, assembling device of mounting substrate, and assembling method for mounting substrate

Patent metadata

Field	Value
Publication number	US-2022342161-A1
Application number	US-202217719447-A
Country	US
Kind code	A1
Filing date	Apr 13, 2022
Priority date	Apr 21, 2021
Publication date	Oct 27, 2022
Grant date	—

Abstract

An optical measuring device includes: a laser light source that emits first light having a first wavelength; an image capturing unit that emits second light having a second wavelength different from the first wavelength; a separating unit that receives the first light and the second light to direct the first light and the second light toward an object to be measured, and receives reflected light from the object to be measured to separate the reflected light into first reflected light based on the first light and second reflected light based on the second light; a light receiving element that receives the first reflected light separated by the separating unit; and a calculating unit that calculates a yawing angle and a pitching angle of the object to be measured based on a light receiving result of the light receiving element, in which the image capturing unit captures an image of the object to be measured by receiving the second reflected light separated by the separating unit, and the calculating unit calculates a rolling angle of the object to be measured based on an image capturing result acquired by the image capturing unit.

First claim

What is claimed is:

1 . An optical measuring device comprising:
a laser light source configured to emit first light having a first wavelength; an image capturing unit configured to emit second light having a second wavelength different from the first wavelength; a separating unit configured to receive the first light and the second light to direct the first light and the second light toward an object to be measured, and receive reflected light from the object to be measured to separate the reflected light into first reflected light based on the first light and second reflected light based on the second light; a light receiving element configured to receive the first reflected light separated by the separating unit; and a calculating unit configured to calculate a yawing angle and a pitching angle of the object to be measured based on a light receiving result of the light receiving element, wherein the image capturing unit captures an image of the object to be measured by receiving the second reflected light separated by the separating unit, and the calculating unit calculates a rolling angle of the object to be measured based on an image capturing result acquired by the image capturing unit.

2 . The optical measuring device according to claim 1 ,
wherein the image capturing unit generates an image in which the object to be measured and an object different from the object to be measured are displayed, and the calculating unit calculates the rolling angle of the object to be measured with respect to the object based on the image.

3 . The optical measuring device according to claim 1 , further comprising:
a lens configured to collect the first light and the second light passing through the separating unit on the object to be measured, and guide the reflected light including the first reflected light and the second reflected light to the separating unit.

4 . The optical measuring device according to claim 1 ,
wherein the separating unit is a dichroic mirror that changes a traveling direction of one of the first light and the second light and does not change a traveling direction of another one of the first light and the second light.

5 . The optical measuring device according to claim 1 , further comprising:
a polarization separating unit configured to transmit the first light emitted from the laser light source; and a wave plate configured to change a polarization direction of the first light passing through the polarization separating unit and a polarization direction of the first reflected light, wherein the polarization separating unit changes a traveling direction of one of the first light and the first reflected light passing through the wave plate, and the light receiving element receives the first reflected light passing through the polarization separating unit.

6 . An assembling device of a mounting substrate, comprising:
a laser light source configured to emit first light having a first wavelength; an image capturing unit configured to emit second light having a second wavelength different from the first wavelength; a separating unit configured to receive the first light and the second light to direct the first light and the second light toward an optical fiber array, and receive reflected light from the optical fiber array to separate the reflected light into first reflected light based on the first light and second reflected light based on the second light; a light receiving element configured to receive the first reflected light separated by the separating unit; a calculating unit configured to calculate a yawing angle and a pitching angle of the optical fiber array based on a light receiving result of the light receiving element; an adjusting device configured to adjust an attitude of the optical fiber array with respect to a substrate based on a calculation result acquired by the calculating unit; and a fixing device configured to fix the optical fiber array to the substrate, wherein the image capturing unit captures an image of the optical fiber array by receiving the second reflected light separated by the separating unit, and the calculating unit calculates a rolling angle of the optical fiber array based on an image capturing result acquired by the image capturing unit.

7 . The assembling device of a mounting substrate according to claim 6 ,
wherein the image capturing unit captures an image of the optical fiber array and the substrate, and the calculating unit calculates a tilt angle of a bottom surface of the optical fiber array with respect to a surface of the substrate based on an image capturing result acquired by the image capturing unit.

8 . An assembling method for a mounting substrate, comprising:
a step of irradiating an optical fiber array with first light emitted from a laser light source and having a first wavelength and second light emitted from an image capturing unit and having a second wavelength different from the first wavelength; a step of separating reflected light from the optical fiber array into first reflected light based on the first light and second reflected light based on the second light; a step of receiving the first reflected light with a light receiving element; a step of receiving the second reflected light with the image capturing unit; a step of calculating a yawing angle and a pitching angle of the optical fiber array based on a light receiving result of the first reflected light of the light receiving element; a step of calculating a rolling angle of the optical fiber array based on a light receiving result of the second reflected light of the image capturing unit; a step of adjusting an attitude of the optical fiber array with respect to a substrate based on the calculated yawing angle, the calculated pitching angle, and the calculated rolling angle; and a step of fixing the optical fiber array to the substrate.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Shiraishi Tatsuro
• Furuta Tomotaka
• Kamatani Junichi

Classifications

• G02B6/4222

  by observing back-reflected light · CPC title

• G01S17/86

  Combinations of lidar systems with systems other than lidar, radar or sonar, e.g. with direction finders · CPC title

• G01S17/88

  Lidar systems specially adapted for specific applications · CPC title

• G01S17/02

  Systems using the reflection of electromagnetic waves other than radio waves (G01S17/66 takes precedence) · CPC title

• G01S7/4815

  using multiple transmitters · CPC title