Modeling of a charge coupled device based optical tomographic instrumentation system for particle sizing

Idroas, Mariani; Rahim, Ruzairi Abdul; Rahiman, Mohd Hafiz Fazalul; Green, R.G.; Ibrahim, Mansor

doi:10.1016/j.powtec.2011.04.017

Cited by 6 publications

(8 citation statements)

References 12 publications

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“…Light reflectance is considered in this experiment as the light from laser may be reflected away once it hits the ruby surface. While the light absorbance is the light that successfully pass the ruby [20,21].…”

Section: Methodsmentioning

confidence: 99%

“…Light reflectance is considered as energy loss as the light is reflected away from the ruby. The reflected light will not be the effective light and will be excluded from the finalized data from the CCD linear sensor [17,21].…”

Section: Light Reflectancementioning

confidence: 99%

“…Light is attenuated and converted into energy when passing through the ruby. Along the optical path, the output light intensity is attenuated exponentially according to the Beer-Lambert Law [17,21]. The LabVIEW simulation for the light attenuation equation is shown in the Figure 3 below.…”

Section: Light Attenuationmentioning

confidence: 99%

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Non-Invasive Grading Technique for Ruby Gemstone Using Charge-Coupled Device (Ccd)

Rahalim

Jamaludin²,

Raisin³

2023

AEJ

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Ruby is one of the most popular and high-value gemstones that always attract the gemologist and jeweler in the diamond market. The wide use of ruby in various industries makes the grading of this gems more complicated due to a lot of synthetic and imitation rubies are made. The current grading techniques are mostly depending on the human visual assessment which prone to errors. This paper proposes a system that helps in grading the clarity characteristic of the ruby in non-invasive manner. The system includes a charge-coupled devices (CCD) and laser that is designed in the most suitable and effective way to conduct inspection on the light intensity of the ruby which will then determine the clarity of the ruby. CCD linear sensor is widely known as the reliable sensor especially when use in the optical system. The CCD linear sensor capture the light intensity from the ruby and convert it into the voltage value. The result shows a value of 1.7918 V obtained from the CCD linear sensor when ruby is placed in the system. This concludes that the CCD system can detect even slightest changes in the light intensity that can pass through the ruby and falls on the CCD linear sensor. The system is proven to be a reliable and effective system with 80% accuracy.

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Section: Methodsmentioning

confidence: 99%

Section: Light Reflectancementioning

confidence: 99%

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Non-Invasive Grading Technique for Ruby Gemstone Using Charge-Coupled Device (Ccd)

Rahalim

Jamaludin²,

Raisin³

2023

AEJ

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“…This type of sensor is very sensitive to dark areas. The speciality of this sensor is that only a few sensors are needed for a high resolution image reconstruction [29]. The complementary metal oxide semiconductor (CMOS) is another sensor that can be used in the optical tomography system.…”

Section: 60 Types Of Sensor In the Optical Tomography Systemmentioning

confidence: 99%

A Review of the Optical Tomography System

Jamaludin

Rahim

et al. 2014

Jurnal Teknologi

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Tomography is a method that has been used for image reconstruction in the medical and engineering fields. Optical tomography is one of the various methods applied in tomography systems. This tomography method is widely used in the medical and processing industries fields because of its special characteristics, such as immunity to electrical noise and interference, high resolution and its hard field sensors. The basic principle of the optical tomography system in measuring an object is based on its wave and radiation source. This article is a review of the characteristics of light and its interaction with matter, the types of optical tomography system, the basic construction of an optical tomography system, types of optoelectronic sensors and image reconstruction.

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“…The use of image sensors in tomography results in high-resolution images of samples that are over ten times larger than the samples imaged using other optical tomographic techniques [10][11][12][13]. For example, Idroas uses a charge coupled device (CCD) linear image sensor in her optical tomography system, which has a spatial resolution of less than 0.01%.…”

Section: Introductionmentioning

confidence: 99%

Imaging particles in solid/air flows using an optical tomography system based on complementary metal oxide semiconductor area image sensors

Idroas

Najib

Ibrahim

2015

Sensors and Actuators B: Chemical

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Modeling of a charge coupled device based optical tomographic instrumentation system for particle sizing

Cited by 6 publications

References 12 publications

Non-Invasive Grading Technique for Ruby Gemstone Using Charge-Coupled Device (Ccd)

Non-Invasive Grading Technique for Ruby Gemstone Using Charge-Coupled Device (Ccd)

A Review of the Optical Tomography System

Imaging particles in solid/air flows using an optical tomography system based on complementary metal oxide semiconductor area image sensors

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