# US 11,999,298 B2 · Optical assembly and rear-view mirror assembly comprising same

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- Number: US 11,999,298 B2
- Document ID: US11999298B2
- Status: Granted
- Kind: B2
- Application number: 18/201,317
- Filed: 2023-05-24
- Published: 2023-09-21
- Granted: 2024-06-04
- Earliest claimed: 2020-01-23
- Assignees: LG Innotek Co., Ltd.
- Applicants: LG Innotek Co., Ltd.
- Inventors: Dong Hyun Lee
- Web page: https://patentgrep.com/patent/US11999298B2

## CPC

- B60Q 9/008: {for anti-collision purposes}
- B60R 1/12: Mirror assemblies combined with other articles, e.g. clocks
- B60R 1/1207: {with lamps; with turn indicators}
- F21K 9/60: Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
- F21S 43/28135: {Structures encapsulating the light source}
- G02B 5/0236: {the diffusion taking place within the volume of the element}
- G02B 19/0019: {having reflective surfaces only (e.g. louvre systems, systems with multiple planar reflectors)}
- G02B 19/0061: {the light source comprising a LED}
- B60Q 1/2665: {on rear-view mirrors (lighting devices for vehicle interior on or for rear-view mirrors B60Q3/258)}
- F21Y 2115/10: Light-emitting diodes [LED]
- G02B 5/0226: {having particles on the surface}
- B60Q: ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- F21K: NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- F21Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED

## Abstract

The optical assembly disclosed in the embodiment includes a housing having an inclined bottom surface, a plurality of inner surfaces around an outer periphery of the bottom surface, and a receiving space in which an upper portion is opened; and a lighting module disposed on the inclined bottom surface, wherein the lighting module includes a substrate inclinedly disposed on the inclined bottom surface; at least one light emitting device disposed on the substrate; and a resin layer sealing the light emitting device and the substrate, wherein an upper surface of the resin layer emits light by diffusing light emitted from the light emitting device, wherein the plurality of inner surfaces includes a first inner surface adjacent to the light emitting device, a second inner surface facing the first inner surface, and third and fourth inner surfaces facing each other and disposed between the first and second inner surfaces, wherein a height between the bottom surface of the housing and an upper surface of the housing increases from the first inner surface toward the second inner surface, and decreases from the third inner surface toward the fourth inner surface.

## Claims

### Claim 1

An optical assembly comprising:
a housing including a receiving space in which an upper portion is opened, an inclined bottom surface within the receiving space, and a plurality of inner surfaces around the receiving space;
a lighting module disposed on the inclined bottom surface; and
an optical member disposed on the lighting module,
wherein the lighting module includes:
a substrate disposed on the inclined bottom surface;
at least one light emitting device disposed on the substrate; and
a resin layer disposed on the light emitting device and the substrate,
wherein the plurality of inner surfaces includes a first inner surface facing a first side of the lighting module, a second inner surface facing a second side of the lighting module opposite to the first side of the lighting module, a third inner surface facing a third side of the lighting module, and a fourth inner surface facing a fourth side of the lighting module opposite to the third side of the lighting module, and
wherein a depth of the third inner surface within the receiving space of the housing is greater than a depth of the fourth inner surface.

### Claim 2 (depends on 1)

The optical assembly of claim 1,
wherein the lighting module is inclined on the inclined bottom surface of the receiving space.

### Claim 3 (depends on 1)

The optical assembly of claim 1,
wherein a vertical distance between an upper end of the fourth side of the lighting module and an upper end of the fourth inner surface of the housing is greater than a vertical distance between an upper end of the third side of the lighting module and the upper end of the third inner surface of the housing.

### Claim 4 (depends on 1)

The optical assembly of claim 1,
wherein a length of the first side of the lighting module in a first direction is smaller than a length of the third side in a second direction, and
wherein the first direction and the second direction are perpendicular to each other, and the first side and the second side of the lighting module are disposed on opposite sides to each other with respect to the first direction.

### Claim 5 (depends on 4)

The optical assembly of claim 4,
wherein a length of the third side of the lighting module in a second direction is greater than the length of the fourth side in the second direction.

### Claim 6 (depends on 1)

The optical assembly of claim 1,
wherein thicknesses of the first to fourth side of the lighting module are substantially the same.

### Claim 7 (depends on 1)

The optical assembly of claim 1,
wherein the light emitting device is disposed adjacent to the first side in the resin layer,
wherein a length of the fourth side of the lighting module in a second direction is smaller than the length of the third side in the second direction, and
wherein the third and fourth sides are disposed on opposite sides of the lighting module in the second direction.

### Claim 8 (depends on 7)

The optical assembly of claim 7,
wherein the light emitting device emits light toward the second side of the lighting module, and
wherein an upper surface of the resin layer emits light by diffusing light emitted from the light emitting device.

### Claim 9 (depends on 1)

The optical assembly of claim 1, comprising:
a cover member disposed on the optical member within the receiving space,
wherein the optical member is disposed between an upper surface of the lighting module and a lower surface of the cover member.

### Claim 10 (depends on 9)

The optical assembly of claim 9,
wherein the upper surface of the cover member is substantially parallel to an upper surface of the housing, and
wherein the upper surface of the cover member is substantially disposed not parallel to the upper surface of the lighting module.

### Claim 11 (depends on 9)

The optical assembly of claim 9,
wherein a lower surface of the cover member is inclined with respect to the upper surface of the cover member.

### Claim 12 (depends on 1)

The optical assembly of claim 1,
wherein the optical assembly includes a rear-view mirror assembly of a vehicle.

### Claim 13

A rear-view mirror assembly comprising:
an optical assembly comprises:
a housing including a receiving space in which an upper portion is opened and an inclined bottom surface within the receiving space;
a lighting module disposed on the inclined bottom surface; and
an optical member disposed on the lighting module within the receiving space;
a mirror member disposed on the optical member of the optical assembly; and
a blocking member disposed between the housing and the mirror member,
wherein the blocking member includes an opening region and a non-transmissive region,
wherein the opening region of the blocking member is a region through which light emitted from the optical assembly is transmitted,
wherein the light emitted from the optical assembly is emitted in a direction of the mirror member through the opening region and is provided to an outside,
wherein the rear-view mirror assembly includes a first region and a second region based on a virtual line overlapping the optical assembly and extending in a direction perpendicular to an extension direction of the mirror member,
wherein the first region is a region where a driver of a vehicle is located, and the second region is a region where another vehicle or object is located outside a region where the driver is located, and
wherein a luminance value of light emitted in a direction of the first region from the optical assembly is greater than a luminance value of light emitted in a direction of the second region from the optical assembly.

### Claim 14 (depends on 13)

The rear-view mirror assembly of claim 13,
wherein the lighting module includes:
a substrate disposed on the inclined bottom surface;
at least one light emitting device disposed on the substrate; and
a resin layer disposed on the light emitting device and the substrate.

### Claim 15 (depends on 14)

The rear-view mirror assembly claim 14,
wherein the lighting module is inclined with respect to the mirror member.

### Claim 16

The rear-view mirror assembly of 14,
wherein the housing includes a plurality of inner surface around the receiving space, and
wherein the plurality of inner surfaces includes a first inner surface facing a first side of the lighting module, a second inner surface facing a second side opposite of the lighting module to the first side of the lighting module, a third inner surface facing a third side of the lighting module, and a fourth inner surface facing a fourth side of the lighting module opposite to the third side of the lighting module.

### Claim 17

The rear-view mirror assembly of 16,
wherein a depth of the third inner surface within the receiving space of the housing is greater than a depth of the fourth inner surface.

### Claim 18 (depends on 16)

The rear-view mirror assembly of claim 16,
wherein a vertical distance between an upper end of the fourth side of the lighting module and an upper end of the fourth inner surface of the housing is greater than a vertical distance between an upper end of the third side of the lighting module and the upper end of the third inner surface of the housing,
wherein a length of the first side of the lighting module in a first direction is smaller than a length of the third side in a second direction, and
wherein the first direction and the second direction are perpendicular to each other, and the first side and the second side of the lighting module are disposed on opposite sides to each other with respect to the first direction.

### Claim 19 (depends on 18)

The rear-view mirror assembly of claim 18,
wherein a length of the third side of the lighting module in a second direction is greater than the length of the fourth side in the second direction.

### Claim 20 (depends on 14)

The optical assembly of claim 14,
wherein thicknesses of the first to fourth side of the lighting module are substantially the same,
wherein the light emitting device is disposed adjacent to the first side in the resin layer,
wherein the light emitting device emits light toward the second side of the lighting module, and
wherein an upper surface of the resin layer emits light by diffusing light emitted from the light emitting device.