Light Sensor Partial Area Illumination Detection

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Solution Overview

Problem

Existing light sensors are designed to sense illumination of the entire surrounding area, whereas there is a need for a sensor that can specifically detect the illumination of a partial area, such as a meeting room table, to enable more precise control in smart building systems.

Innovation Solution

A light sensor comprising a first and second case with a hole, a first and second light absorption layer, and a sensing module positioned on the axis of the hole, which allows only light from a specific partial area to be sensed, preventing external light interference and enabling precise illumination monitoring.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If a light sensor senses the illumination of the whole surrounding area, then it can provide comprehensive environmental light information, but it cannot detect the illumination of a specific partial area

Engineering Contradiction:

Improveillumination detection precisionVSAvoiddetection area coverage

Core Design Contradiction:

Measurement precisionVSAdaptability or versatility

Solution Approach 1:

The light sensor divides the detection field into multiple segments using light blocking structures (first and second light blocking layers with patterned openings). These structures segment the incoming light paths, allowing the sensor to selectively detect light from specific spatial regions while blocking light from other areas, thus achieving partial area illumination detection

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies local quality by creating different optical properties in different spatial regions. The light blocking layers are strategically positioned and patterned to allow light transmission only from specific directions and areas, giving different parts of the sensor system different functional qualities for detecting illumination from specific locations

Inventive Principle:

Principle #3Local quality

2Measurement precision

If a light sensor is designed to detect only a specific partial area, then it can provide precise localized illumination data, but it loses the ability to sense the whole surrounding area

Engineering Contradiction:

Improvepartial area illumination measurement accuracyVSAvoiddetection coverage area

Core Design Contradiction:

Measurement precisionVSArea of stationary object

Solution Approach 1:

The sensor system uses segmented light blocking structures that divide the overall detection area into multiple zones. By controlling which segments are open or blocked, the system can focus detection on specific partial areas while maintaining the physical structure capable of broader detection, thus achieving precise partial area measurement without completely losing the capability for wider area sensing

Inventive Principle:

Principle #1Segmentation

3Ease of operation

If conventional light sensors are used in smart building systems, then they can provide general environmental monitoring, but they cannot enable precise light control for specific areas such as meeting room tables

Engineering Contradiction:

Improvesmart building control functionalityVSAvoidtarget area illumination detection accuracy

Core Design Contradiction:

Ease of operationVSMeasurement precision

Solution Approach 1:

The light sensor employs segmented detection zones created by light blocking layers with specific patterns of openings and blocking regions. This segmentation enables the sensor to isolate and measure illumination from specific target areas (such as a meeting room table) separately from surrounding areas, providing the precise localized data needed for targeted smart building control applications

Inventive Principle:

Principle #1Segmentation

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enables accurate illumination monitoring of a specific partial area, allowing for targeted adjustments in ambient brightness, enhancing the functionality of smart building systems by focusing on the exact area of interest.

Implementation Method 1

a first light absorption layer... located on the first case... The at least one sensing module is used for sensing the light from the partial area which passes through the hole

Methodology Applied

Scientific EffectLight absorption: Absorption (EM radiation)

Data Source

PatentUS10190906B2Light sensor sensing illumination of a partial area

Publication Date: 2019.01.29 CHICONY POWER TECH CO LTD

AI summary

A light sensor, for sensing an illumination of a partial area, includes a first case, a second case, a first light absorption layer and at least one sensing module. The first case includes at least one hole. The at least one hole includes an axis. The second case is fastened to the first case, and a containing space is formed between the first case and the second case. The first light absorption layer is located on the first case. The at least one sensing module is located in the containing space, and the position of the at least one sensing module is located on the axis of the hole. The at least one sensing module is used for sensing the light from the partial area which passes through the hole to obtain the illumination of the partial area.