# US 10,873,688 B2 · Multi-aperture imaging device having a beam-deflecting device comprising reflecting facets

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- Number: US 10,873,688 B2
- Document ID: US10873688B2
- Status: Granted
- Kind: B2
- Application number: 16/540,727
- Filed: 2019-08-14
- Published: 2019-12-05
- Granted: 2020-12-22
- Earliest claimed: 2015-08-19
- Assignees: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
- Applicants: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
- Inventors: Frank Wippermann; Andreas Brueckner; Andreas Braeuer; Alexander Oberdoerster
- Web page: https://patentgrep.com/patent/US10873688B2

## CPC

- H04N 23/58: Means for changing the camera field of view without moving the camera body, e.g. nutating or panning of optics or image sensors
- G02B 27/646: {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)}
- H04N 23/45: for generating image signals from two or more image sensors being of different type or operating in different modes, e.g. with a CMOS sensor for moving images in combination with a charge-coupled device [CCD] for still images
- H04N 23/55: Optical parts specially adapted for electronic image sensors; Mounting thereof
- H04N 23/685: {performed by mechanical compensation}
- H04N 25/41: {Extracting pixel data from a plurality of image sensors simultaneously picking up an image, e.g. for increasing the field of view by combining the outputs of a plurality of sensors}
- G03B 2205/0007: Movement of one or more optical elements for control of motion blur
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G03B: APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR (optical parts of such apparatus G02B; photosensitive materials or processes for photographic purposes G03C; apparatus for processing exposed photographic materials G03D)

## Abstract

The fact that a beam-deflecting device can be produced cost-effectively and without any losses of optical quality of the multi-aperture imaging device is used when a carrier substrate is provided for the same, wherein the carrier substrate is common to the plurality of optical channels and is installed with a setting angle, i.e. oblique with respect to the image sensor in the multi-aperture imaging device such that a deflection angle of deflecting the optical path of each optical channel is based, on the one hand, on the setting angle and, on the other hand, on an individual inclination angle with respect to the carrier substrate of a reflecting facet of a surface of the beam-deflecting device facing the image sensor, the reflecting facet being allocated to the optical channel.

## Claims

### Claim 1

A multi-aperture imaging device, comprising:
an image sensor;
a plurality of optical channels;
a beam-deflecting device for deflecting optical paths of the plurality of optical channels, wherein the beam-deflecting device comprises an integral carrier substrate common for the plurality of optical channels,
wherein a deflection angle of deflecting the optical paths of each optical channel is based on a setting angle of the carrier substrate of the beam-deflecting device with respect to the image sensor and on an inclination with respect to the carrier substrate, which varies among the optical channels, of a reflecting facet of a surface of the beam-deflecting device facing the image sensor, the reflecting facet being allocated to the optical channel and
that the reflecting facet of the beam-deflecting device is made of additional material being molded onto the carrier substrate; and
that the carrier substrate of the beam-deflecting device comprises a glass material, a polymer material, a metal material or a silicon material, wherein the facets comprise a polymer material; wherein the carrier substrate comprises a rear side facing away from the image sensor and an opposing front side, the front side and the rear side being parallel to each other.

### Claim 2 (depends on 1)

The multi-aperture imaging device according to claim 1, wherein, for each channel, the setting angle is greater than an inclination angle of the inclination of the reflecting facet allocated to this channel with respect to the carrier substrate.

### Claim 3 (depends on 1)

The multi-aperture imaging device according to claim 1, wherein the plurality of optical channels is adapted to detect a total field of view and forms a single-line array.

### Claim 4 (depends on 3)

The multi-aperture imaging device according to claim 3, wherein the carrier substrate is positioned parallel to a line extension direction of the single-line array and the setting angle is in a plane perpendicular to the line extension direction.

### Claim 5 (depends on 1)

The multi-aperture imaging device according to claim 1, wherein a surface of the beam-deflecting device facing the image sensor is mirrored at least on the reflecting facets allocated to the optical channels.

### Claim 6 (depends on 1)

The multi-aperture imaging device according to claim 1, wherein the carrier substrate is parallelepiped-shaped and the reflecting facets allocated to the optical channels are formed by a material molded on the parallelepiped-shaped carrier substrate.

### Claim 7 (depends on 1)

The multi-aperture imaging device according to claim 1, wherein the carrier substrate is integrally formed with the reflecting facets allocated to the optical channels in the surface facing the image sensor.

### Claim 8 (depends on 1)

The multi-aperture imaging device according to claim 1, wherein the plurality of optical channels is adapted to detect a total field of view and forms a single-line array and the carrier substrate is pivoted around an axis of rotation which is parallel to a line extension direction of the single-line array.

### Claim 9 (depends on 8)

The multi-aperture imaging device according to claim 8, further comprising a first actuator for generating a rotary movement of the beam-deflecting device around the axis of rotation.

### Claim 10 (depends on 9)

The multi-aperture imaging device according to claim 9, wherein the first actuator is controlled by an optical image stabilization control of the multi-aperture imaging device such that image stabilization is effected by generating the rotary movement of the beam-deflecting device.

### Claim 11 (depends on 10)

The multi-aperture imaging device according to claim 10, further comprising a second actuator for moving optics of the plurality of optical channels along the line extension direction of the single-line array in a translatory manner, which is further controlled by the optical image stabilization control of the multi-aperture imaging device such that, by moving the optics of the plurality of optical channels along the line extension direction of the single-line array in a translatory manner, image stabilization is effected along a first image axis and, by generating the rotary movement of the beam-deflecting device, image stabilization is effected along a second image axis.

### Claim 12 (depends on 1)

The multi-aperture imaging device according to claim 1, further comprising a third actuator for moving optics of the plurality of optical channels along the optical paths of the plurality of optical channels in a translatory manner.

### Claim 13 (depends on 12)

The multi-aperture imaging device according to claim 12, wherein the third actuator is controlled by a focus control of the multi-aperture imaging device.

### Claim 14 (depends on 1)

The multi-aperture imaging device according to claim 1, wherein the carrier substrate further comprises two lateral faces parallel to a line extension direction and to one another, which connect the surface facing the image sensor and the rear side, wherein an angle γ between the rear side and one of the lateral faces further apart from the image sensor fulfills the condition that 0.9·(90°−αx0)≤γ≤1.1·(90°−αx0), wherein αx0 is the setting angle.

### Claim 15 (depends on 1)

Manufacturing of the multi-aperture imaging device according to claim 1, wherein the reflecting facets allocated to the optical channels are generated by:
molding additional material onto the carrier substrate or
injection molding or pressing material such that the carrier substrate is formed integrally with the reflecting facets allocated to the optical channels in the surface facing the image sensor.

### Claim 16 (depends on 1)

The multi-aperture imaging device according to claim 1, wherein the carrier substrate comprises a planar body.

### Claim 17 (depends on 1)

The multi-aperture imaging device according to claim 1, wherein exactly one reflective facet is assigned to an optical channel.