Photosensor Testing Device with Built-in LED Assembly

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Solution Overview

Problem

Traditional photosensor testing devices are bulky, costly, and require frequent replacement of high intensity discharge lamps with unstable wavelength halogen bulbs, leading to high operational costs and inefficient testing processes.

Innovation Solution

A photosensor testing device with a built-in light emitting diode (LED) assembly that provides stable wavelength light and reduces bulk volume, incorporating a base with a loading portion for the photosensor, an upper cover with the LED assembly, and a controller for activating the LED light source, allowing for efficient and accurate testing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a high intensity discharge lamp with optical processing device is used, then light beams with different wavelengths can be provided, but the device occupies large space and has high cost

Engineering Contradiction:

Improvewavelength coverageVSAvoiddevice volume

Core Design Contradiction:

Adaptability or versatilityVSVolume of stationary object

Solution Approach 1:

The patent extracts the optical processing device from the traditional testing system and replaces it with a built-in LED assembly that directly provides multi-wavelength light. This eliminates the need for separate optical components while maintaining the ability to provide different wavelengths for photosensor testing.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The LED assembly serves multiple functions: it provides light beams with different wavelengths, acts as the light source, and integrates the testing functionality within the device housing. This multi-functional design replaces the traditional separate components (lamp + optical processing device), reducing overall device volume.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Illumination intensity

If halogen bulbs are used as high intensity discharge lamp, then light source is available, but wavelength values drift and are unstable

Engineering Contradiction:

Improvelight source availabilityVSAvoidwavelength stability

Core Design Contradiction:

Illumination intensityVSReliability

Solution Approach 1:

The patent changes the fundamental parameter of the light source from halogen bulb to LED assembly. This parameter change results in stable wavelength output and eliminates the drift issues inherent in halogen bulbs, while maintaining sufficient illumination intensity for photosensor testing.

Inventive Principle:

Principle #35Parameter changes

3Illumination intensity

If halogen bulbs are used, then light source is provided, but frequent replacement is needed resulting in higher cost

Engineering Contradiction:

Improvelight source functionVSAvoidlight source lifespan

Core Design Contradiction:

Illumination intensityVSDuration of action of stationary object

Solution Approach 1:

The patent replaces the expensive, short-lived halogen bulbs with LED assemblies that have significantly longer operational lifespans. Although LEDs have different cost characteristics, their extended duration of action eliminates frequent replacement costs and maintenance overhead.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

4Measurement precision

If traditional tester with optical processing device is used, then photosensor testing can be performed, but testing speed is limited

Engineering Contradiction:

Improvetesting accuracyVSAvoidtesting speed

Core Design Contradiction:

Measurement precisionVSProductivity

Solution Approach 1:

The LED assembly is pre-integrated into the device housing with built-in positioning and optical alignment. This preliminary arrangement eliminates the need for complex optical processing during testing, enabling faster testing speed while maintaining measurement precision through the LED's inherent optical properties.

Inventive Principle:

Principle #10Preliminary action

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

The solution significantly reduces the device's volume and cost, enhances testing accuracy and speed, and extends the life of the light source, eliminating the need for frequent replacements and improving overall testing efficiency.

Implementation Method 1

at least one light emitting diode assembly is mounted inside said upper cover... the light emitting diode assembly would be activated and project light beams on the surface of said photosensor under test

Methodology Applied

Scientific EffectLight emitting diode: Light Emitting Diode

Implementation Method 2

Each cell in the photosensor under test 13 senses the incident intensities and then the corresponding sense signals by its conversion would be outputted

Methodology Applied

Scientific EffectPhotoelectric effect: Photoelectric Effect

Data Source

PatentUS7626403B2Photosensor testing device with built-in light source and tester provided with said device

Publication Date: 2009.12.01 CHROMA ATE INC

AI summary

The present invention provides a photosensor testing device with a built-in light source and a tester provided with said device, which has a base and an upper cover disposed above the base, characterized in that the upper cover is equipped with at least one light emitting diode (LED) assembly used as a light source for a photosensor under test to undergo testing operation. Therefore, the components such as high intensity discharge lamps and optical processing devices are unnecessary any more, reducing the bulk volume of the testing device and its related cost. Besides, the testing process would be speeded up and the testing accuracy could be improved, as well as the time consumed in replacing the light source would be saved.