# US 11,029,453 B2 · Optical system

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- Number: US 11,029,453 B2
- Document ID: US11029453B2
- Status: Granted
- Kind: B2
- Application number: 16/257,938
- Filed: 2019-01-25
- Published: 2019-07-25
- Granted: 2021-06-08
- Earliest claimed: 2018-01-25
- Assignees: TDK Taiwan Corp.
- Applicants: TDK Taiwan Corp.
- Inventors: Chao-Chang Hu; Che-Wei Chang; Liang-Ting Ho; Sin-Jhong Song; Hsin-Yen Wu
- Web page: https://patentgrep.com/patent/US11029453B2

## CPC

- G03B 5/02: Lateral adjustment of lens
- F03G 7/0614: {using shape memory elements}
- F03G 7/06143: {Wires}
- G02B 3/04: with continuous faces that are rotationally symmetrical but deviate from a true sphere {, e.g. so called "aspheric" lenses}
- G02B 3/12: Fluid-filled or evacuated lenses
- G02B 3/14: of variable focal length
- G02B 5/005: {Diaphragms (for cameras G03B9/02)}
- G02B 6/0025: {Diffusing sheet or layer; Prismatic sheet or layer}
- G02B 6/0066: {characterised by the light source being coupled to the light guide}
- G02B 7/023: {permitting adjustment}
- G02B 7/08: adapted to co-operate with a remote control mechanism
- G02B 7/09: adapted for automatic focusing or varying magnification
- G02B 7/102: {controlled by a microcomputer (cameras with interchangeable lenses G03B17/14)}
- G02B 7/1805: {for prisms (G02B7/181 takes precedence)}
- G02B 7/182: for mirrors
- G02B 7/1821: {for rotating or oscillating mirrors}
- G02B 7/1828: {using magnetic means}
- G02B 13/0065: {having a beam-folding prism or mirror}
- G02B 13/0075: {having an element with variable optical properties}
- G02B 13/009: {having zoom function}
- G02B 26/004: {based on a displacement or a deformation of a fluid}
- G02B 26/0816: {by means of one or more reflecting elements}
- G02B 26/0883: {the refracting element being a prism}
- G02B 27/0068: {having means for controlling the degree of correction, e.g. using phase modulators, movable elements (controlling the phase of light using moving or deformable elements G02B26/06)}
- G02B 27/0955: {Lenses (lenses per se G02B3/00)}
- G02B 27/0972: {Prisms (prisms per se G02B5/04)}
- G02B 27/0977: {Reflective elements}
- 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)}
- G03B 5/00: Adjustment of optical system relative to image or object surface other than for focusing
- G03B 9/04: Single movable plate with two or more apertures of graded size, e.g. sliding plate or pivoting plate
- G03B 9/06: Two or more co-operating pivoted blades, e.g. iris type (shutters functioning as diaphragms by limiting extent of opening movement G03B9/08)
- G03B 9/10: Blade or disc rotating or pivoting about axis normal to its plane
- G03B 9/14: Two separate members moving in opposite directions
- G03B 13/36: Autofocus systems
- G03B 17/17: with reflectors arranged in beam forming the photographic image, e.g. for reducing dimensions of camera
- G03B 30/00: Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles
- G06F 1/1626: {with a single-body enclosure integrating a flat display, e.g. Personal Digital Assistants [PDAs]}
- G06F 1/1686: {the I/O peripheral being an integrated camera}
- G06T 7/521: from laser ranging, e.g. using interferometry; from the projection of structured light
- G06T 7/97: {Determining parameters from multiple pictures (depth or shape recovery from multiple images G06T7/55; stereo camera calibration G06T7/85)}
- G06T 15/08: Volume rendering
- 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)}
- H02K 41/0356: {moving along a straight path}
- 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 23/51: Housings
- H04N 23/54: Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
- H04N 23/55: Optical parts specially adapted for electronic image sensors; Mounting thereof
- H04N 23/56: provided with illuminating means
- H04N 23/57: Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
- H04N 23/73: by influencing the exposure time
- G02B 5/003: {Light absorbing elements}
- G02B 13/004: {having four lenses}
- G03B 5/04: Vertical adjustment of lens; Rising fronts
- G03B 2205/0007: Movement of one or more optical elements for control of motion blur
- G03B 2205/0015: by displacing one or more optical elements normal to the optical axis
- G03B 2205/0023: by tilting or inclining one or more optical elements with respect to the optical axis
- G03B 2205/0069: using electromagnetic actuators, e.g. voice coils
- G06T 2207/10028: Range image; Depth image; 3D point clouds
- G06T 2207/10048: Infrared image
- G09G 2354/00: Aspects of interface with display user
- 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)
- F03G: SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR (arrangements in connection with power supply in vehicles from force of nature B60K16/00; electric propulsion with power supply in vehicles from force of nature B60L8/00)
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- 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)
- H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53})
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION

## Abstract

The present invention relates to an optical system, including a fixed portion, a movable portion, an aperture unit and a first driving assembly. The movable portion is movably connected to the fixed portion and used to hold an optical element. The aperture unit is disposed on the movable portion and corresponds to the optical element. The first driving assembly is disposed in the fixed portion to drive the movable portion to move relative to the fixed portion.

## Claims

### Claim 1

An optical system, comprising:
a fixed portion;
a movable portion movably connected to the fixed portion and used for holding an optical element;
an aperture unit disposed on the movable portion and corresponding to the optical element; and
a first driving assembly disposed in the fixed portion and used for driving the movable portion to move relative to the fixed portion;
wherein the movable portion comprises:
a frame movably connected to the fixed portion; and
a holder movably connected to the frame and used for holding the optical element, wherein the optical system further comprises a second driving assembly disposed in the fixed portion and used for driving the holder to move relative to the frame, wherein the first driving assembly is used for driving the frame to move relative to the fixed portion, and the aperture unit is affixed to the holder.

### Claim 2 (depends on 1)

The optical system as claimed in claim 1, wherein the aperture unit comprises:
an aperture comprising an aperture opening; and
a third driving assembly connected to the aperture and used for continuously adjusting the size of the aperture opening.

### Claim 3 (depends on 2)

The optical system as claimed in claim 2, wherein the aperture unit further comprises a plurality of aperture elements arranged in a rotational symmetric way relative to the optical axis.

### Claim 4 (depends on 3)

The optical system as claimed in claim 3, wherein the aperture further comprises a guiding element movably connected to the aperture elements.

### Claim 5 (depends on 4)

The optical system as claimed in claim 4, wherein the aperture elements rotate toward a same direction to the guiding element.

### Claim 6 (depends on 4)

The optical system as claimed in claim 4, wherein the guiding element comprises a plurality of guiding recesses arranged in a rotational symmetric way relative to the optical axis.

### Claim 7 (depends on 4)

The optical system as claimed in claim 4, wherein the aperture opening has a predetermined size, and the size of the aperture opening is different from the predetermined size when the guiding element is rotating.

### Claim 8 (depends on 1)

The optical system as claimed in claim 1, wherein the fixed portion comprises a base partially overlaps the frame when viewed in a direction perpendicular to the optical axis.

### Claim 9 (depends on 8)

The optical system as claimed in claim 8, wherein the base is directly disposed on the holder.

### Claim 10 (depends on 1)

The optical system as claimed in claim 1, wherein the frame partially overlaps the first driving assembly when viewed in a direction perpendicular to the optical axis.

### Claim 11 (depends on 1)

The optical system as claimed in claim 1, further comprising a second driving assembly disposed in the fixed portion, wherein the first driving assembly comprises a first driving coil, the second driving assembly comprises a second driving coil, and the aperture unit comprises:
a driving magnetic element; and
a third driving coil disposed on the driving magnetic element, wherein the driving magnetic element corresponds to the first driving coil or the second driving coil.

### Claim 12 (depends on 11)

The optical system as claimed in claim 11, further comprising a first resilient element, wherein the frame is movably connected to the fixed portion through the first resilient element, and the third driving coil is electrically connected to the first resilient element.

### Claim 13 (depends on 11)

The optical system as claimed in claim 11, wherein the aperture unit comprises a second resilient element, an aperture and a third driving coil disposed on the movable portion, the aperture comprises an aperture opening, the second resilient element is used to directly or indirectly apply a predetermined pressure to the aperture, and the size of the aperture opening is a predetermined size when no current is applied to the third driving coil.

### Claim 14 (depends on 13)

The optical system as claimed in claim 13, wherein the size of the aperture opening is different from the predetermined size when current is applied to the third driving coil.

### Claim 15 (depends on 14)

The optical system as claimed in claim 14, wherein the size of the aperture opening is greater than the predetermined size when positive current is applied to the third driving coil, and the size of the aperture opening is less than the predetermined size when negative current is applied to the third driving coil.

### Claim 16 (depends on 14)

The optical system as claimed in claim 14, wherein the size of the aperture opening is greater than the predetermined size when negative current is applied to the third driving coil, and the size of the aperture opening is less than the predetermined size when positive current is applied to the third driving coil.

### Claim 17 (depends on 13)

The optical system as claimed in claim 13, further comprising another second resilient element, and the second resilient elements and the third driving coil are arranged in a first direction.

### Claim 18 (depends on 1)

The optical system as claimed in claim 1, further comprising an image sensor disposed on the fixed portion.

### Claim 19 (depends on 1)

The optical system as claimed in claim 1, further comprising a size sensor disposed in the fixed portion, wherein the aperture unit comprises an aperture, the aperture comprises an aperture opening, and the size sensor is used for sensing the size of the aperture opening.