# US 2014/0198095 A1 · Electronic device having a projector function and a vibrating mirror element

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- Number: US 2014/0198095 A1
- Document ID: US20140198095A1
- Status: Published application
- Kind: A1
- Application number: 14/132,670
- Filed: 2013-12-18
- Published: 2014-07-17
- Earliest claimed: 2013-01-17
- Assignees: Funai Electric Co., Ltd.
- Applicants: Funai Electric Co., Ltd.
- Inventors: Manabu Murayama
- Web page: https://patentgrep.com/patent/US20140198095A1

## CPC

- G09G 5/003: {Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto (specific for a CRT G09G1/165; for a flat panel G09G3/2092)}
- G02B 26/0858: {the reflecting means being moved or deformed by piezoelectric means}
- G02B 26/101: {with both horizontal and vertical deflecting means, e.g. raster or XY scanners (colour television using laser beams scanning a display screen H04N9/3129)}
- G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00)
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

A vibrating mirror element includes a mirror portion that reflects light and is tiltable around a rotational axis, a tiltable frame portion connected to a mirror end portion of the mirror portion at a position on an intersecting line that intersects with the rotational axis, a driving portion that includes a piezoelectric element that deforms through application of a voltage, and a connecting portion that connects the frame portion and the driving portion and is tiltable through deformation of the piezoelectric element of the driving portion. The frame portion can be tilted by tilting the connecting portion, and the mirror portion can be tilted by tilting the frame portion.

## Claims

### Claim 1

A vibrating mirror element comprising:
a mirror portion that reflects light and is tiltable around a rotational axis;
a tiltable frame portion connected to a mirror end portion of the mirror portion at a position on an intersecting line that intersects with the rotational axis;
a driving portion that includes a piezoelectric element that deforms through application of a voltage; and
a connecting portion that connects the frame portion and the driving portion and is tiltable through deformation of the piezoelectric element of the driving portion, wherein:
the frame portion can be tilted by tilting the connecting portion, and the mirror portion can be tilted by tiltable by tilting the frame portion.

### Claim 2 (depends on 1)

The vibrating mirror element as set forth in claim 1, wherein:
the frame portion is connected to the mirror end portion at a location near a vertical centerline that intersects perpendicularly with the rotational axis of the mirror portion.

### Claim 3 (depends on 1)

The vibrating mirror element as set forth in claim 1, wherein:
the connecting portion is connected to the frame near the rotational axis.

### Claim 4 (depends on 1)

The vibrating mirror element as set forth in claim 1, wherein:
the frame portion is formed so as to surround a periphery of the mirror portion.

### Claim 5 (depends on 4)

The vibrating mirror element as set forth in claim 4, wherein:
the mirror portion is formed in a circular shape from a plan view, and
the frame portion is formed in a ring shape in the plan view so as to encompass the periphery of the mirror portion.

### Claim 6 (depends on 1)

The vibrating mirror element as set forth in claim 1, wherein:
the driving portion is formed in a pair so as to hold the mirror portion therebetween,
the connecting portion is formed so as to connect together first end portions of the pair of driving portions and to connect together the second end portions of the pair of driving portions, and includes a pair of connecting bars that are tiltable by deformation of the pair of driving portions,
the frame portion is formed so as to connect to each of a pair of the mirror end portions of the mirror portion located on a perpendicular centerline that intersects perpendicularly with the rotational axis of the mirror portion, and can be tilted by tilting the pair of connecting portions, and
the mirror portion can be tilted by tilting the frame portion.

### Claim 7 (depends on 6)

The vibrating mirror element as set forth in claim 6, wherein:
the connecting portion further includes a pair of torsion bars formed so as to hold the mirror portion therebetween and are capable of undergoing torsional deformation through tilting the pair of connecting bars, and
the pair of torsion bars is formed so as to lie on the rotational axis and so that the frame portion is tiltable through torsional deformation of the pair of torsion bars.

### Claim 8 (depends on 1)

The vibrating mirror element as set forth in claim 1, wherein:
the driving portion is arched or bent, from a plan view, so that the mirror portion side is concave.

### Claim 9

An electronic device having a projector function, comprising:
a laser beam producing portion that produces a laser beam;
a controlling portion that analyzes an inputted video to recognize pixel information; and
a vibrating mirror element that scans the laser beam, wherein:
the vibrating mirror element includes:
a mirror portion that reflects light and is tiltable around a rotational axis;
a tiltable frame portion connected to a mirror end portion of the mirror portion at a position on an intersecting line that intersects with the rotational axis;
a driving portion that includes a piezoelectric element that deforms through application of a voltage; and
a connecting portion that connects the frame portion and the driving portion and is tiltable through deformation of the piezoelectric element of the driving portion, wherein:
the frame portion can be tilted by tilting the connecting portion, and
the mirror portion can be tilted by tilting the frame portion.

### Claim 10 (depends on 2)

The vibrating mirror element as set forth in claim 2, wherein:
the connecting portion is connected to the frame near the rotational axis.

### Claim 11 (depends on 2)

The vibrating mirror element as set forth in claim 2, wherein:
the frame portion is formed so as to surround a periphery of the mirror portion.

### Claim 12 (depends on 3)

The vibrating mirror element as set forth in claim 3, wherein:
the frame portion is formed so as to surround a periphery of the mirror portion.

### Claim 13 (depends on 2)

The vibrating mirror element as set forth in claim 2, wherein:
the driving portion is formed in a pair so as to hold the mirror portion therebetween,
the connecting portion is formed so as to connect together first end portions of the pair of driving portions and to connect together the second end portions of the pair of driving portions, and includes a pair of connecting bars that are tiltable by deformation of the pair of driving portions,
the frame portion is formed so as to connect to each of a pair of the mirror end portions of the mirror portion located on a perpendicular centerline that intersects perpendicularly with the rotational axis of the mirror portion, and can be tilted by tilting the pair of connecting portions, and
the mirror portion can be tilted by tilting the frame portion.

### Claim 14 (depends on 3)

The vibrating mirror element as set forth in claim 3, wherein:
the driving portion is formed in a pair so as to hold the mirror portion therebetween,
the connecting portion is formed so as to connect together first end portions of the pair of driving portions and to connect together the second end portions of the pair of driving portions, and includes a pair of connecting bars that are tiltable by deformation of the pair of driving portions,
the frame portion is formed so as to connect to each of a pair of the mirror end portions of the mirror portion located on a perpendicular centerline that intersects perpendicularly with the rotational axis of the mirror portion, and can be tilted by tilting the pair of connecting portions, and
the mirror portion can be tilted by tilting the frame portion.

### Claim 15 (depends on 4)

The vibrating mirror element as set forth in claim 4, wherein:
the driving portion is formed in a pair so as to hold the mirror portion therebetween,
the connecting portion is formed so as to connect together first end portions of the pair of driving portions and to connect together the second end portions of the pair of driving portions, and includes a pair of connecting bars that are tiltable by deformation of the pair of driving portions,
the frame portion is formed so as to connect to each of a pair of the mirror end portions of the mirror portion located on a perpendicular centerline that intersects perpendicularly with the rotational axis of the mirror portion, and can be tilted by tilting the pair of connecting portions, and
the mirror portion can be tilted by tilting the frame portion.

### Claim 16 (depends on 5)

The vibrating mirror element as set forth in claim 5, wherein:
the driving portion is formed in a pair so as to hold the mirror portion therebetween,
the connecting portion is formed so as to connect together first end portions of the pair of driving portions and to connect together the second end portions of the pair of driving portions, and includes a pair of connecting bars that are tiltable by deformation of the pair of driving portions,
the frame portion is formed so as to connect to each of a pair of the mirror end portions of the mirror portion located on a perpendicular centerline that intersects perpendicularly with the rotational axis of the mirror portion, and can be tilted by tilting the pair of connecting portions, and
the mirror portion can be tilted by tilting the frame portion.

### Claim 17 (depends on 2)

The vibrating mirror element as set forth in claim 2, wherein:
the driving portion is arched or bent, from a plan view, so that the mirror portion side is concave.

### Claim 18 (depends on 3)

The vibrating mirror element as set forth in claim 3, wherein:
the driving portion is arched or bent, from a plan view, so that the mirror portion side is concave.

### Claim 19

A vibrating mirror element comprising:
a mirror that reflects light and is tiltable around a rotational axis;
a tiltable frame connected to an end of the mirror at a position on an intersecting line that intersects with the rotational axis;
a driving circuit that includes a piezoelectric element that deforms through application of a voltage; and
a connector that connects the frame and the driving circuit and is tiltable through deformation of the piezoelectric element of the driving circuit, wherein:
the frame can be tilted by tilting the connector, and
the mirror can be tilted by tilting the frame.

### Claim 20

An electronic device having a projector function, comprising:
a laser that produces a laser beam;
a controlling circuit that analyzes an inputted video to recognize pixel information; and
a vibrating mirror that scans the laser beam, wherein:
the vibrating mirror element includes:
a mirror that reflects light and is tiltable around a rotational axis;
a tiltable frame connected to an end of the mirror at a position on an intersecting line that intersects with the rotational axis;
a driving circuit that includes a piezoelectric element that deforms through application of a voltage; and
a connector that connects the frame and the driving circuit and is tiltable through deformation of the piezoelectric element of the driving circuit, wherein:
the frame can be tilted by tilting the connector, and
the mirror can be tilted by tilting the frame.
