Method for manufacturing imaging module and imaging-module manufacturing device

Patent metadata

Field	Value
Publication number	US-2016349528-A1
Application number	US-201615233094-A
Country	US
Kind code	A1
Filing date	Aug 10, 2016
Priority date	Feb 26, 2014
Publication date	Dec 1, 2016
Grant date	—

Abstract

Provided are a method for manufacturing an imaging-module and an imaging-module manufacturing device that can increase the flexibility of the component arrangement in an electronic device. A relative position of the lens unit and the imaging device unit, held on an axis perpendicular to a measurement chart, and the measurement chart on the axis is changed and images of the measurement chart are captured at the relative positions in the state where, when the lens unit is installed in an electronic device, a magnetic field having a magnitude equal to a magnitude of a magnetic field applied to the movable image-stabilizing unit is applied to the movable image-stabilizing unit. A compensation amount is calculated using signals acquired by capturing the images of the measurement chart, a tilt of the imaging device unit relative to the lens unit is adjusted, and the imaging device unit is fixed to the lens unit.

First claim

What is claimed is:

1 . A method for manufacturing an imaging module, wherein the imaging module comprises; a lens unit having a lens group and an imaging device unit being fixed to the lens unit and having an imaging device that captures an image of an object through the lens group, and wherein the lens unit comprises; a movable image-stabilizing unit having the lens group and a magnetic member and an elastic support unit supporting the movable image-stabilizing unit such that the movable image-stabilizing unit is movable in a direction perpendicular to an optical axis of the lens group and tiltable around an axis perpendicular to the optical axis,
the method comprising: a first step of holding the lens unit and the imaging device unit on an axis perpendicular to a measurement chart; a second step of changing a relative position of the lens unit and the imaging device unit, held on the axis perpendicular to the measurement chart, and the measurement chart on the axis and capturing images of the measurement chart using the imaging device at the respective relative position; and a third step of calculating a compensation amount using image-capturing signals acquired as a result of the imaging device capturing the images of the measurement chart, adjusting a tilt of the imaging device unit relative to the lens unit, and fixing the imaging device unit to the lens unit, wherein in the second step, the images are captured in a state where a magnetic field having a magnitude equal to a magnitude of a magnetic field applied to the movable image-stabilizing unit, when the lens unit is installed in an electronic device including a magnetic-field generating unit, from the magnetic-field generating unit is applied to the movable image-stabilizing unit.

2 . The method for manufacturing an imaging module according to claim 1 , wherein, in the second step, the magnetic field is applied to the movable image-stabilizing unit by an electromagnet.

3 . The method for manufacturing an imaging module according to claim 1 , wherein, in the third step, the lens unit and the imaging device unit are fixed to each other by causing an adhesive supplied to a portion between the lens unit and the imaging device unit to cure after a tilt of the imaging device unit relative to the lens unit is adjusted.

4 . The method for manufacturing an imaging module according to claim 2 , wherein, in the third step, the lens unit and the imaging device unit are fixed to each other by causing an adhesive supplied to a portion between the lens unit and the imaging device unit to cure after a tilt of the imaging device unit relative to the lens unit is adjusted.

5 . The method for manufacturing an imaging module according to claim 1 , wherein a pixel pitch of the imaging device is smaller than or equal to 1.0 μm.

6 . The method for manufacturing an imaging module according to claim 2 , wherein a pixel pitch of the imaging device is smaller than or equal to 1.0 μm.

7 . The method for manufacturing an imaging module according to claim 3 , wherein a pixel pitch of the imaging device is smaller than or equal to 1.0 μm.

8 . The method for manufacturing an imaging module according to claim 4 , wherein a pixel pitch of the imaging device is smaller than or equal to 1.0 μm.

9 . An imaging-module manufacturing device, comprising:
an imaging-device-unit holding portion that holds an imaging device unit on an axis perpendicular to a measurement chart installed on a measurement-chart installation portion, the imaging device unit having an imaging device that captures an image of an object through a lens unit having a lens group; a lens-unit holding portion that holds the lens unit at a position on the axis between the measurement-chart installation portion and the imaging-device-unit holding portion; a control unit that changes a relative position of the measurement-chart installation portion, the lens-unit holding portion, and the imaging-device-unit holding portion on the axis and captures images of the measurement chart installed on the measurement-chart installation portion at the respective relative position using the imaging device of the imaging device unit held by the imaging-device-unit holding portion through the lens unit held by the lens-unit holding portion; an adjustment portion that adjusts a tilt of the imaging device unit held by the imaging-device-unit holding portion relative to the lens unit held by the lens-unit holding portion on a basis of image-capturing signals acquired as a result of the imaging device capturing the images of the measurement chart; a unit-fixing portion that fixes the imaging device unit adjusted by the adjustment portion to the lens unit; and a magnetic-field applying portion that applies a magnetic field having a magnitude equal to a magnitude of a magnetic field applied to the lens unit in the state where the lens unit is installed in an electronic device including a magnetic-field generating unit to the lens unit.

10 . The imaging-module manufacturing device according to claim 9 , wherein the magnetic-field applying portion is an electromagnet.

11 . The imaging-module manufacturing device according to claim 9 , comprising a magnetic-field-intensity measuring portion that measures an intensity of the magnetic field applied from the magnetic-field applying portion to the lens unit.

12 . The imaging-module manufacturing device according to claim 10 , comprising a magnetic-field-intensity measuring portion that measures an intensity of the magnetic field applied from the magnetic-field applying portion to the lens unit.

13 . The imaging-module manufacturing device according to claim 11 , wherein the magnetic-field-intensity measuring portion is movable between a measurement position, located near the lens unit and at which an intensity of the magnetic field applied to the lens unit is measurable, and a retract position, located away from the measurement position.

14 . The imaging-module manufacturing device according to claim 13 , wherein the measurement position is located in a space occupied by the lens unit when the lens unit is held by the lens-unit holding portion.

15 . The imaging-module manufacturing device according to claim 9 , wherein the unit-fixing portion fixes the lens unit and the imaging device to each other by causing an adhesive supplied to a portion between the lens unit and the imaging device unit to cure after an adjustment performed by the adjustment portion.

16 . The imaging-module manufacturing device according to claim 10 , wherein the unit-fixing portion fixes the lens unit and the imaging device to each other by causing an adhesive supplied to a portion between the lens unit and the imaging device unit to cure after an adjustment performed by the adjustment portion.

17 . The imaging-module manufacturing device according to claim 11 , wherein the unit-fixing portion fixes the lens unit and the imaging device to each other by causing an adhesive supplied to a portion between the lens unit and the imaging device unit to cure after an adjustment performed by the adjustment portion.

18 . The imaging-module manufacturing device according to claim 12 , wherein the unit-fixing portion fixes the lens unit and the imaging device to each other by causing an adhesive supplied to a portion between the lens unit and the imaging device unit to cure after an adjustment performed by the adjustment portion.

19 . The imaging-module manufacturing device according to claim 13 , wherein the unit-fixing portion fixe

Assignees

• Fujifilm Corp

Inventors

• Kishine Yasunobu

Classifications

• H04N23/57

  Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices · CPC title

• G03B5/00

  Adjustment of optical system relative to image or object surface other than for focusing · CPC title

• C09J5/00

  Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers · CPC title

• G02B27/646

  compensating for small deviations, e.g. due to vibration or shake (movement of one or more optical elements for control of motion blur in cameras, projectors or printers G03B2205/0007; image stabilisation in cameras peculiar to the presence or use of an electronic image sensor H04N23/68) · CPC title

• G03B43/00

  Testing correct operation of photographic apparatus or parts thereof · CPC title