# US 11,898,725 B2 · Jewelry lighting lamp and a jewelry lighting method

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- Number: US 11,898,725 B2
- Document ID: US11898725B2
- Status: Granted
- Kind: B2
- Application number: 17/932,436
- Filed: 2022-09-15
- Published: 2023-01-05
- Granted: 2024-02-13
- Earliest claimed: 2020-07-01
- Assignees: Self Electronics Co., Ltd.
- Applicants: Wanjiong Lin; Self Electronics Co., Ltd.; Self Electronics USA Corporation
- Inventors: Yuanfang Xue; Huangfeng Pan; Junjun Ying
- Web page: https://patentgrep.com/patent/US11898725B2

## CPC

- F21V 14/02: by movement of light sources {(in vehicle head lamps F21S41/657)}
- F21S 8/026: {intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling}
- F21V 7/0083: {Array of reflectors for a cluster of light sources, e.g. arrangement of multiple light sources in one plane (combination of two or more reflectors F21V7/0025)}
- F21V 7/04: Optical design
- F21W 2131/405: for shop-windows or displays
- F21Y 2105/18: annular; polygonal other than square or rectangular, e.g. for spotlights or for generating an axially symmetrical light beam
- F21Y 2115/10: Light-emitting diodes [LED]
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21W: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- 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

A jewelry lighting lamp has a lighting part, a rotating part and a mounting part, the mounting part has a lamp barrel which accommodates the lighting part and rotating part. The rotating part has a driving motor, which drives the lighting part to rotate along the central axis of the lamp barrel; the lighting part has a main light source arranged on the central axis and one or more secondary light sources arranged around the main light source, the main light source and the secondary light source are driven by the rotating part to rotate along the central axis circumferentially. A jewelry lighting method using the jewelry lighting lamp is also provided. By varying luminance, the lamp solves the problem of visible light and shadows at the edge of the aperture when there are main and auxiliary light sources with different luminance.

## Claims

### Claim 1

A jewelry lighting lamp comprising a lighting part (1), a rotating part (2) and a mounting part (3), wherein,
the mounting part (3) comprises a lamp barrel (31), which accommodates a lighting part (1) and a rotating part (2);
the rotating part (2) comprises a driving motor (21), which drives the lighting part (1) relative to the lamp (31) along the central axis (L) of the lamp (31); and
the lighting part (1) comprises a main light source (11) arranged on the central axis (L) and at least one secondary light source (12) arranged around the main light source (11), and the main light source (11) and the at least one secondary light source (12) are driven by the rotating part (2) to rotate along the central axis (L) circumferentially.

### Claim 2 (depends on 1)

The jewelry lighting lamp as claimed in claim 1, wherein the main light source (11) and the at least one secondary light source (12) respectively form a main light spot (113) and an auxiliary light spot (123) in an illuminated area, the main light spot (113) having a brightness Bb, the auxiliary light spot (123) having a brightness Ba, the auxiliary light spot (123) is always within an area of the main spot (113) during rotation, a superimposed light spot (123′) formed by superpositioning the main light spot (113) and the auxiliary light spot (123) having a brightness Ba+Bb; a ratio of a brightness difference between the main light spot (113) and the superimposed light spot (123′) ΔB=Ba and the brightness Bb of the main light spot (113) is defined as a brightness contrast C=Ba/Bb, and the brightness contrast C is less than a critical brightness contrast Cpro.

### Claim 3 (depends on 2)

The jewelry lighting lamp as claimed in claim 2, wherein the brightness contrast C is set to 0.02-0.05.

### Claim 4 (depends on 1)

The jewelry lighting lamp as claimed in claim 1, wherein the lighting part (1) comprises a light plate assembly (101) and an aperture assembly (102), the light plate assembly (101) comprises a light plate (1011), and the aperture assembly (102) comprising a reflector (1021), the main light source (11) and the auxiliary light source (12) are arranged on the lamp board (1011), and the main light source (11) and the auxiliary light source (12) are aligned with the reflector (1021) in an irradiation direction with one-to-one correspondence.

### Claim 5 (depends on 4)

The jewelry lighting lamp as claimed in claim 4, wherein in the aperture assembly (102), the main light source (11) is arranged corresponding to a first reflector (111), and the first reflector (111) includes a circumferentially arranged first reflective wall (112), the secondary light source (12) is arranged corresponding to a second reflective cup (121), and the second reflective cup (121) includes a circumferentially arranged second reflective wall (122), the first reflective wall (112)) and the central axis (L) form a first included angle (α), the second reflective wall (122) and the central axis (L) form a second included angle (β), the first included angle (α) is set to be greater than the second included angle (β).

### Claim 6 (depends on 4)

The jewelry lighting lamp as claimed in claim 4, wherein the lighting part (1) further comprises a lens assembly (103), the lens assembly (103) includes a lens (13), and the lens (13) is arranged on the main light source (11) and a first reflector (111), and between the secondary light source (12) and a second reflector (121).

### Claim 7 (depends on 6)

The jewelry lighting lamp as claimed in claim 6, wherein the lens (13) is arranged as a V-shaped lens.

### Claim 8 (depends on 1)

The jewelry lighting lamp as claimed in claim 1, further comprising a plurality of secondary light sources (12), and the secondary light sources (12) are evenly distributed circumferentially along the central axis (L).

### Claim 9 (depends on 1)

The jewelry lighting lamp as claimed in claim 1, wherein the rotating part (2) comprises a fixed base plate (22) and a rotating disc (23), the driving motor (21) is mounted on the fixed base plate (22), and the rotating disc (23) is fixed to the lighting part (1), and the rotating disc (23) is connected with the driving motor (21) in a driving manner.

### Claim 10 (depends on 1)

The jewelry lighting lamp as claimed in claim 1, wherein the rotating part (2) axially penetrates along the central axis (L) to form an inner cavity (28), and an electric slip ring (29) is arranged in the inner cavity (28), the electric slip ring (29) includes a stator (291) and a mover (292), wherein the mover (292) is electrically connected to the lighting part (1).

### Claim 11 (depends on 1)

The jewelry lighting lamp as claimed in claim 1, wherein the mounting part (3) comprises a rear cover (32) covering a top of the lamp holder (31), and a shock absorber pad (36) is disposed between the rear cover (32) and the rotating part (2).

### Claim 12 (depends on 1)

The jewelry lighting lamp as claimed in claim 1, wherein the mounting portion (3) is fixedly mounted on a mounting plate (4), and the mounting portion (3) further comprises a buckle (33) mounted on the outer wall of the lamp holder (31), a mounting ring (34) is integrally formed at the bottom end of the lamp holder (31), and the buckle (33) and the mounting ring (34) are respectively arranged on both sides of the mounting plate (4).

### Claim 13 (depends on 12)

The jewelry lighting lamp as claimed in claim 12, wherein a shock-absorbing ring (35) is arranged between the mounting ring (34) and the mounting plate (4).

### Claim 14 (depends on 1)

A jewelry lighting method, using the jewelry lighting lamp as claimed in claim 1, comprising:
using the main light source (11) to form a main light spot (113) which covers the jewelry;
using the at least one secondary light source (12) to form an auxiliary light spot (123) to illuminate a cutting surface on a periphery of the jewelry, wherein the auxiliary light spot (123) is contained within the main light spot (113) during rotation;
forming a superimposed light spot (123′) by superpositioning the auxiliary light spot (123) on the main light spot (113);
wherein the main light spot (113) has a brightness Bb, the auxiliary light spot (123) has a brightness Ba, and superimposed light spot (123′) has a brightness Ba+Bb, a luminance contrast is defined as C=Ba/Bb, and the luminance contrast C is less than a critical luminance contrast Cpro.