Manufacturing method of imaging module

Patent metadata

Field	Value
Publication number	US-10048462-B2
Application number	US-201615135142-A
Country	US
Kind code	B2
Filing date	Apr 21, 2016
Priority date	Oct 22, 2013
Publication date	Aug 14, 2018
Grant date	Aug 14, 2018

Abstract

A manufacturing method of an imaging module and an imaging module manufacturing apparatus capable of performing positioning of an imaging element unit and a lens unit with high accuracy are provided. A manufacturing apparatus 200 holds a lens unit 10 and an imaging element unit 20 on a Z axis, and images a measurement chart by an imaging element 27 in a state where a probe 113a comes into contact with each of terminals 14A to 14F electrically connected to an x-direction VCM 16A, a y-direction VCM 16C, and a z-direction VCM 16E of the lens unit 10 and electricity flows to a lens drive unit 16 inside the lens unit 10. A contactor of the probe 113a is configured of a non-magnetic material.

First claim

What is claimed is:

1. A manufacturing method of an imaging module having a lens unit which has a lens group, and an imaging element unit which is fixed to the lens unit and has an imaging element which images a subject through the lens group,
wherein the lens unit has a lens drive unit which includes two lens driving units which respectively move at least a portion of lenses of the lens group in two directions orthogonal to an optical axis of the lens group, a housing which accommodates the lens group and the lens drive unit, and an electric connection portion which is exposed from the housing and is electrically connected to the lens drive unit,
wherein the two lens driving units have voice coils and magnets facing the voice coils,
wherein the manufacturing method comprises:
a first process of, on an axis orthogonal to a measurement chart, changing relative positions of at least one or more of the imaging element unit, the lens unit, and the measurement chart in the direction of the axis, and driving the imaging element and imaging the measurement chart through the lens group by the imaging element at each relative position; and
a second process of adjusting at least an inclination of the imaging element unit with respect to the lens unit based on imaging signals obtained by imaging the measurement chart by the imaging element, and fixing the imaging element unit to the lens unit, and
wherein in the first process, the lens unit is held on the axis, and the measurement chart is imaged by the imaging element in a state where a contactor of a first probe having the contactor including a main body formed of a non-magnetic material is pressed to the electric connection portion of the lens unit and electricity flows to the lens drive unit.

2. The manufacturing method of an imaging module according to claim 1 ,
wherein the first probe comprises the contactor, and an elastic body which biases the contactor.

3. The manufacturing method of an imaging module according to claim 1 ,
wherein the non-magnetic material is a non-magnetic metal.

4. The manufacturing method of an imaging module according to claim 2 ,
wherein the non-magnetic material is a non-magnetic metal.

5. The manufacturing method of an imaging module according to claim 3 ,
wherein the contactor is configured of the main body, and a film which is coated on a surface of the main body and is formed of a material different from a material of the main body.

6. The manufacturing method of an imaging module according to claim 4 ,
wherein the contactor is configured of the main body, and a film which is coated on a surface of the main body and is formed of a material different from a material of the main body.

7. The manufacturing method of an imaging module according to claim 1 ,
wherein the shortest distance among distances between the electric connection portion and the magnets in the lens unit is 1.5 mm or less.

8. The manufacturing method of an imaging module according to claim 1 ,
wherein in the first process, the imaging element unit is held on the axis, and the measurement chart is imaged by the imaging element in a state where a contactor of a second probe having the contactor including a main body formed of a non-magnetic material is pressed to an electric connection portion which is provided in the imaging element unit and is electrically connected to the imaging element, and electricity flows to the imaging element.

9. The manufacturing method of an imaging module according to claim 1 ,
wherein in the first process, the lens unit is held on the axis by disposing a tool formed of a non-magnetic material, to which the lens unit is attached, on the axis.

10. The manufacturing method of an imaging module according to claim 9 ,
wherein the tool is configured of a main body formed of a non-magnetic material, and a film which is coated on a surface of the main body and is formed of a material different from that of the main body.

Assignees

• Fujifilm Corp

Inventors

• Mitsuyasu Takashi

Classifications

• H04N23/55

  Optical parts specially adapted for electronic image sensors; Mounting thereof · CPC title

• G03B5/00 Primary

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

• H04N23/57

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

• H04N23/54

  Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils · CPC title

• G02B27/62

  Optical apparatus specially adapted for adjusting optical elements during the assembly of optical systems · CPC title