Session Index

The nondestructive sweetness evaluation of apple using NIR spectroscopy measurement is performed in this study. To perform a quantitative analysis, a calibration model investigated in this study allows the user to predict the sweetness of the New Zealand Fuji Apples from the NIR reflection spectrum alone.

 

In this study, the prism film covered on the top surface of the planar glass is used to enhance the efficiency of the planar solar concentrators. the inorganic phosphor is used to enhance the efficiency of thin film LSC using inorganic phosphor.

 

A lens design for analyzing and correcting the heat of projector at temperature of 10℃ to 80℃ consists of 14 lenses with the maximum MTF is 0.613; the maximum absolute value of the transverse chromatic aberration is 1.390 mircometer, and the minimum is 0.782 mircometer; the relative illumination is 93.95%.

 

Our results show that paper material does not affect reading clarity and retina safety. However, the color temperature has a profound effect on retina safety. Specifically, the candlelight-style 2000K light-source is 2.3 times safer than the 4,200K.

 

A high-resolution total-internal-reflection (TIR) phase-shifting interferometry is proposed for measuring the two-dimensional (2D) refractive index distribution of a material. The proposed method has merits of simple structure, and high resolution.

 

For the use of Head-Up-Display (HUD) system, the reflecting type is known as small volume, high brightness and low aberration than the other types. In this study, the image distortion of the projected image on the combiner with different position and magnification of the reflecting type HUD will be investigated.

 

In this work, a multi-wavelength light source with both parallel and perpendicular polarization is used to illuminate the intraoral region of a pig. The shape information of the teeth can be deduced by structured light technique can the depth of the gingiva also can be identified by two different wavelengths.

 

We design a freeform surface lens in an optical system using for the output with uniform and collimation. We use the method of numerical analysis and calculating with Matlab by geometric optical for every ray, and set up a freeform surface lens and a laser source in Zemax to simulate.

 

A new advanced optical design based on the crossed Czerny-Turner mounting for multiple inspection bands spectrometer with high resolution is presented. By the addition of two movable mirrors and a stationary mirror in the optical system, the calculated results leads to thrice the spectral range of the original C-T spectrometer.

 

Prolonged screen watching might damage human eyes and body especially at night. The damage may be minimized by adjusting screen settings. We find that yellow text on black background is 10.5 times safer on retina protection and 1.3 times safer on melatonin generation, as comparing with the typical screen setting.

 

A new optical true-time-delay (TTD) beamforming system using the grid-crossarrayed integrated photonic switches is proposed for commercial collision avoidance radar (CAR). The scanning range is ±60° with a beamwidth of 8°. The area of the system is 30.1 mm x 8.6 mm and the overall switching time is 0.91 μs.

 

Spectrometer and IoT are designed to provide spectrometer detection and intelligent watering. In this study, we take Mini-Gardella orchids as an example, combining spectrometers, aerosols and other sensing components, and instantly viewing experimental data through the remote end of the mobile APP to examine the environment around the orchid.

 

An Optical measurement system is proposed to create 3D model of object. Main architecture contains laser-scanning system, image processing techniques and Calibration procedure. Expectation is to make an affordable research tool that can help researcher build the 3D model of their target object.

 

A multistep-index (MSI) Y-junction coupler with arc-bend branches is presented to reduce the dimension and also achieve a high coupling efficiency no matter it works as a beam splitter or combiner. Numerical simulation results show that a combiner efficiency over 70% and total splitter efficiency over 90% are obtained.

 

First we utilize the Lambertian to do our light source, the ray will be limited direction by through the freeform surface. In article we can see the light source energy will be break up many part of equal amounts. And then we constructed freeform model by matlab.

 

An full field dual-wavelength interferometric method based on photoelastic modulator was demonstrated in this work. The phase shifting for different wavelengths was carried by setting laser pulses at different phase angles of the modulation cycle; therefore, dual-wavelength phase information of the test sample can be obtained within few seconds.