Image pickup apparatus with two optical systems

Patent metadata

Field	Value
Publication number	US-10686973-B2
Application number	US-201816004116-A
Country	US
Kind code	B2
Filing date	Jun 8, 2018
Priority date	Dec 14, 2015
Publication date	Jun 16, 2020
Grant date	Jun 16, 2020

Abstract

An image pickup apparatus, includes a first optical system and a second optical system which generate two optical images having mutual parallax; and one image sensor which captures the two optical images, wherein each of the first optical system and the second optical system has a different focusing unit, further includes a first frame which holds some of lenses in the first optical system, a second frame which holds the image sensor; and a third frame which holds lenses in the first optical system other than the lenses held by the first frame, and lenses in the second optical system, wherein the first frame is movable in a direction of optical axes with respect to the third frame, and the second frame is movable in a direction of optical axes with respect to the third frame.

First claim

What is claimed is:

1. An image pickup apparatus, comprising:
a first optical system and a second optical system which generate two optical images having mutual parallax;
an image sensor which captures the two optical images;
a first frame which holds a first group of lenses in the first optical system;
a second frame which holds the image sensor; and
a third frame which holds a second group of lenses in the first optical system different than the first group of lenses held by the first frame, and all lenses in the second optical system,
wherein the first frame and the second frame are movable in a direction parallel to an optical axis of the first optical system and an optical axis of the second optical system, with respect to the third frame,
wherein the following conditional expression (1) is satisfied:
3< f 2 / f 1<12 . . .   (1)

where:
f1 denotes a focal length of the overall first optical system, and
f2 denotes a focal length of the first group of lenses held by the first frame.

Assignees

• Olympus Corp

Inventors

• Suga Takeshi

Classifications

• H04N23/55 Primary

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

• H04N23/54

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

• H04N23/67

  Focus control based on electronic image sensor signals · CPC title

• G02B7/06 Primary

  Focusing binocular pairs · CPC title

• G03B3/00

  Focusing arrangements of general interest for cameras, projectors or printers · CPC title