Image pickup module manufacturing method, and image pickup module manufacturing device

Patent metadata

Field	Value
Publication number	US-2016118435-A1
Application number	US-201614989948-A
Country	US
Kind code	A1
Filing date	Jan 7, 2016
Priority date	Jul 29, 2013
Publication date	Apr 28, 2016
Grant date	—

Abstract

A manufacturing device holds a lens unit on a Z axis that is orthogonal to a chart surface of a measurement chart, holds an image pickup element unit on the Z axis, picks up an image of the measurement chart by an image pickup element while changing a Z-axis direction position of the image pickup element unit held on the Z axis in a state in which current is applied to a second lens drive unit and a third lens drive unit of the lens unit held on the Z axis, adjusts the position and a tilt of the image pickup element unit relative to the lens unit on the basis of image pickup signals that are obtained in the case where the image of the measurement chart is picked up, and fixes the image pickup element unit to the lens unit.

First claim

What is claimed is:

1 . A method of manufacturing an image pickup module including a lens unit that includes a lens group and an image pickup element unit that is fixed to the lens unit and includes an image pickup element for picking up an image of a subject through the lens group,
wherein the lens unit includes a first lens drive unit that moves at least a part of lenses of the lens group in a first direction extending along an optical axis of the lens group and second and third lens drive units that move at least a part of lenses of the lens group in second and third directions, which are orthogonal to the optical axis of the lens group, respectively, the image pickup element unit includes an electrical connection portion that is electrically connected to the image pickup element, the method comprises: a first step of holding the lens unit on an axis orthogonal to a measurement chart so that the second and third directions are perpendicular to the direction of gravity, and holding the image pickup element unit on the axis; a second step of changing relative positions of the lens unit and the image pickup element unit, which are held on the axis, and the measurement chart in a direction of the axis, and driving the image pickup element through the electrical connection portion to pick up an image of the measurement chart at each relative position by the image pickup element; and a third step of adjusting at least the relative positions of the lens unit and the image pickup element unit in the direction of the axis on the basis of image pickup signals, which are obtained in the case where the image of the measurement chart is picked up by the image pickup element, and fixing the image pickup element unit to the lens unit.

2 . The method according to claim 1 ,
wherein in the second step, the image of the measurement chart is picked up at each relative position by the image pickup element while current is applied to the second and third lens drive units of the held lens unit.

3 . The method according to claim 1 ,
wherein a lens unit, of which the position in a direction of an optical axis of the lens group driven by the first lens drive unit corresponds to an end of infinity or the closest end in the case where the lens unit is held without applying current to the first lens drive unit while the second and third directions are perpendicular to the direction of gravity, is prepared as the lens unit.

4 . The method according to claim 2 ,
wherein a lens unit, of which the position in a direction of an optical axis of the lens group driven by the first lens drive unit corresponds to an end of infinity or the closest end in the case where the lens unit is held without applying current to the first lens drive unit while the second and third directions are perpendicular to the direction of gravity, is prepared as the lens unit.

5 . The method according to claim 1 ,
wherein in the third step, the tilt of the image pickup element unit relative to the lens unit and the relative positions of the lens unit and the image pickup element in the direction of the axis are adjusted on the basis of the image pickup signals.

6 . The method according to claim 2 ,
wherein in the third step, the tilt of the image pickup element unit relative to the lens unit and the relative positions of the lens unit and the image pickup element in the direction of the axis are adjusted on the basis of the image pickup signals.

7 . The method according to claim 3 ,
wherein in the third step, the tilt of the image pickup element unit relative to the lens unit and the relative positions of the lens unit and the image pickup element in the direction of the axis are adjusted on the basis of the image pickup signals.

8 . The method according to claim 4 ,
wherein in the third step, the tilt of the image pickup element unit relative to the lens unit and the relative positions of the lens unit and the image pickup element in the direction of the axis are adjusted on the basis of the image pickup signals.

9 . The method according to claim 1 ,
wherein a pixel pitch of the image pickup element is 1.0 μm or less.

10 . The method according to claim 2 ,
wherein a pixel pitch of the image pickup element is 1.0 μm or less.

11 . The method according to claim 3 ,
wherein a pixel pitch of the image pickup element is 1.0 μm or less.

12 . The method according to claim 4 ,
wherein a pixel pitch of the image pickup element is 1.0 μm or less.

13 . The method according to claim 5 ,
wherein a pixel pitch of the image pickup element is 1.0 μm or less.

14 . The method according to claim 6 ,
wherein a pixel pitch of the image pickup element is 1.0 μm or less.

15 . The method according to claim 7 ,
wherein a pixel pitch of the image pickup element is 1.0 μm or less.

16 . The method according to claim 8 ,
wherein a pixel pitch of the image pickup element is 1.0 μm or less.

17 . A device for manufacturing an image pickup module including a lens unit that includes a lens group and an image pickup element unit that is fixed to the lens unit and includes an image pickup element for picking up an image of a subject through the lens group,
wherein the lens unit includes a first lens drive unit that moves at least a part of lenses of the lens group in a direction extending along an optical axis of the lens group and second and third lens drive units that move at least a part of lenses of the lens group in second and third directions, which are orthogonal to the optical axis of the lens group, respectively, the image pickup element unit includes an electrical connection portion that is electrically connected to the image pickup element, the device comprises: a measurement chart; an image pickup element unit holder that holds the image pickup element unit on an axis orthogonal to the measurement chart; a lens unit holder that is disposed between the measurement chart and the image pickup element unit holder on the axis and holds the lens unit so that the second and third directions are perpendicular to the direction of gravity; a control unit that changes relative positions of the lens unit holder, the image pickup element unit holder, and the measurement chart in a direction of the axis, and drives the image pickup element through the electrical connection portion of the image pickup element unit to allow the image pickup element to pick up an image of the measurement chart at each relative position; an adjustment unit that adjusts at least the relative positions of the lens unit and the image pickup element unit in the direction of the axis on the basis of image pickup signals that are obtained in the case where the image of the measurement chart is picked up by the image pickup element; and a unit fixing section that fixes the image pickup element unit and the lens unit of which at least the relative positions in the direction of the axis have been adjusted by the adjustment unit.

18 . The device according to claim 17 , further comprising:
a current application unit that applies current to the second and third lens drive units of the lens unit, wherein the control unit allows the image pickup element to pick up the image of the measurement chart at each relative position while current is applied to the second and third lens drive units by the current application unit.

19 . The device according to claim 17 ,
wherein the adjustment unit adjusts a tilt of the image pickup element unit relative to the lens unit and the relati

Assignees

• Fujifilm Corp

Inventors

• Fujinami Tatsuya
• Mitsuyasu Takashi

Classifications

• H04N23/57

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

• G02B7/02

  for lenses {(supports for magnifying lenses G02B25/002)} · CPC title

• H04N17/002

  for television cameras · CPC title

• H10F39/806

  Optical elements or arrangements associated with the image sensors · CPC title

• H10F39/024 Primary

  of coatings or optical elements · CPC title