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US 12,731,957 B2Granted
Optical element, optical element monitoring system and method, active light emitting module, and terminal
AssigneeHuawei Technologies Co., Ltd.
InventorsBin Shi, Wei Tang, Xiaogang Song, Bing Yang
Life of this patent
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Abstract
An optical element, an optical element monitoring system, and a method monitor in real time whether an optical element such as a diffractive optical element or a diffuser in an active light emitting module is damaged or falls off, and turn off a laser when the optical element is damaged or falls off.
Claims19
An apparatus, comprising:
- a first conductive pad;
- a second conductive pad;
- a substrate comprising:
- a diffractive element (DOR) or a diffuser;
- and
- a portion directly between the first conductive pad and the second conductive pad, separating the first conductive pad and the second conductive pad, and configured to:
- be disposed in a light emission direction of a laser;
- and
- pass light from the laser;
- a detection line between the first conductive pad and the second conductive pad, disposed on the portion, configured to transmit an electrical signal, extending in a wave line shape, and comprising:
- a transparent conductive material;
- first adjacent portions in the light emission direction and comprising at least two parallel straight-line portions;
- second adjacent portions in the light emission direction;
- and
- a width extending in the wave line shape and ranging from 1 micrometer (μm) to 30 μm;
- a first gap in a first direction between the first adjacent portions and comprising a first size ranging from 1 μm to 30 μm, wherein the first size is the same throughout lengths of the at least two parallel straight-line portions;
- and
- a second gap in a second direction between the second adjacent portions and comprising a second size ranging from 1 μm to 30 μm,
- wherein the first direction and the second direction are different directions.
16 more elements
An apparatus, comprising:
- a housing comprising:
- a bottom substrate;
- and
- a side wall;
- a laser mounted on the bottom substrate;
- an optical element that is a component of a terminal, mounted at one end of the side wall and away from the bottom substrate, and comprising:
- a first conductive pad;
- a second conductive pad;
- a substrate comprising:
- a diffractive element (DOR) or a diffuser;
- and
- a portion directly between the first conductive pad and the second conductive pad, separating the first conductive pad and the second conductive pad, and configured to:
- be disposed in a light emission direction of the laser;
- and
- pass light from the laser;
- a detection line between the first conductive pad and the second conductive pad, disposed on the portion, configured to transmit an electrical signal, extending in a wave line shape, and comprising:
- a transparent conductive material;
- two ends;
- first adjacent portions in the light emission direction and comprising at least two parallel straight-line portions;
- second adjacent portions in the light emission direction;
- and
- a width extending in the wave line shape and ranging from 1 micrometer (μm) to 30 μm;
- a first gap in a first direction between the first adjacent portions and comprising a first size ranging from 1 μm to 30 μm, wherein the first size is the same throughout lengths of the at least two parallel straight-line portions;
- and
- a second gap in a second direction between the second adjacent portions and comprising a second size ranging from 1 μm to 30 μm, wherein the first direction and the second direction are different directions;
- and
- conducting wires configured to connect the two ends to a processor.
24 more elements
An apparatus, comprising:
- a processor;
- a power supply coupled to the processor;
- a laser coupled to the power supply;
- and
- an optical element comprising:
- a first conductive pad;
- a second conductive pad;
- a substrate comprising a portion that is directly between the first conductive pad and the second conductive pad, that separates the first conductive pad and the second conductive pad, and that is configured to:
- be disposed in a light emission direction of the laser;
- and
- pass light from the laser;
- a detection line between the first conductive pad and the second conductive pad, disposed on the portion, configured to transmit an electrical signal, extending in a wave line shape, and comprising:
- a transparent conductive material;
- first adjacent portions in the light emission direction and comprising at least two parallel straight-line portions;
- second adjacent portions in the light emission direction;
- and
- a width extending in the wave line shape and ranging from 1 micrometer (μm) to 30 μm;
- a first gap in a first direction between the first adjacent portions and comprising a first size ranging from 1 μm to 30 μm, wherein the first size is the same throughout lengths of the at least two parallel straight-line portions;
- a second gap in a second direction between the second adjacent portions and comprising a second size ranging from 1 μm to 30 μm;
- and
- two ends connected to the processor.
18 more elements
Dependencies are inferred from the claim text.