Session Index

Counter beam light plays essential important role in road tunnel lights. Through appropriate arrangements of counter beam light with other lights, the Black/White hole effect and transient adaptation of the tunnel to the driver can be reduced. We use the optical design software-LightTools to optimize the counter beam type fixture.

 

A tunable bandpass filter consisting of a comb generator for achieving centralized management of radio signal delivery is experimentally demonstrated. With large tenability and high optical signal-to-noise ratio, the proposed optical comb-based filter provides flexible tunability. The experimental results correlate with the simulation results and theoretical analysis.

 

We investigated a silicon core fiber based surface plasmon resonance sensor which applied in mid-infrared range. D-shaped design could increase the effect of plasmon resonance. The sensitivity of proposed sensor head for monitoring environmental refractive index is around 200 RIU/nm.

 

A reflex reflector is composed of pin arrays with a round angle on CCR. We found that the round angle influences the reflectance efficiency. Our experiment demonstrated that with a smaller round angle, the reflectance efficiency is found that higher. Particularly, with R=0.1mm,32.83% higher is obtained compared with R=0.3mm

 

Shrill bones in food sometime cause great pain/damage/serious death to consumers. Our developed inline inspection machine combined the optical detection module and the vibration module for the inspection of fish bones in dried fish floss.With passing the preliminary test, the regular test in a leading food factory is running.

 

Nonlinear characteristics of semiconductor lasers subject to general optical feedback and polarization-rotated feedback are studied and compared experimentally. Rich dynamical states, including stable, period oscillation, quasi-period, and chaotic oscillation states, are observed. Spectral linewidth and frequency variation of the generated periodic states are investigated in both feedback systems.

 

The purpose of this study was to examine the spatial uniformity of pearl nacre. Indentation hardness was measured via nanoindentation tests, and both the indentation hardness and standard deviation increased with increasing indentation depth. These results suggest that the structure of nacre is not uniform.

 

The digital and analog signals are generated by light receiving elements that are in
the optical sensors designed by ourselves. After the signals are analyzed, the configuration of
cathodes can be fixed in the subsequent experiments. Then, the configurations of sensors’ pins
are discussed in the experiment of bandwidth tests. Finally, the best experimental configuration
can be found and used in future experiments.

 

Myopia ratio has risen drastically in students. We found the safe reading time to depend on the seating location in classroom, because the illumination levels are significantly different at different locations. The results showed the safest spot is located at the front corners, allowing more than 50 minutes reading time.

 

This research is a headlight simulation using a Digital Micromirror Device (DMD). Using two lenses for collimating and magnifying the light, the DMD is an optical switch. Adjusting each individual tiny mirror surface on the DMD to achieve projected light conforms to the ECER112 Class B low beam rule.

 

This study proposed a designing method for lampshade with free-from surface and fabricated the optimum structure of lampshade with 3D printer. Theoretical and measurement results showed high similarity and preserved lower power consumption.

 

In this research, Ga doped SnO2 thin film grows on c-plane sapphire using pulsed laser deposition. By changing the variables such as concentration , temperature, pressure, flow rate. By using hall measurement to measure the properties of electrical. We can know the mobility and carrier concentration.

 

We propose "the external reflectance versus height conversion (ERHC) method" for measuring the full-field three-dimensional surface topography. The average reflectance of the image can be converted to the surface height. The method has the advantages of simple operation, low cost, and easy assembly.

 

We present an method for triplet prisms combination that can minimize the chromatic aberration. The apochromatic aberration equation, relation between relative partial dispersion and glass V-number can be quickly analyzed and found the combination.

 

The nondestructive blood glucose concentration evaluation of human 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 blood glucose concentration of the participants from the NIR reflection measurements alone

 

Computer screens contain high proportion of blue light, which might damage eyes. Wearing tinted glasses might help filter out blue-violet light, permitting longer viewing time. Among seven rainbow colors and dark gray, the yellow lenses permit the longest viewing time by 8.7 folds.

 

PiS/glass package structure is used to improve the efficacy of WLEDs with a SPD.
The efficacy of WLEDs with the PiS/glass package compared to that with the PiS package was increased by 3.8% to 77.1 lm/W because the refractive index matching was improved by covering a glass on the PiS surface.


 

In this study, an optical OR logic gate is obtained by using an optical reservoir computing system based on neural networks. The optical neurons consist of the directional couplers, the erbium-doped optical fiber amplifiers and the optical fibers. By adjusting the phase modulator, the OR logic gate can be achieved.

 

Detecting pathogens in water samples without complex and time-consuming procedures such as fluorescent labeling or incubation is critical to public safety. We used immunoagglutination-based methods to quantify pathogen levels directly from water samples and microfluidic devices. Use our own optical inspection software and hardware.

 

This paper is to explore lens design through correction of 4-megapixel DLP projector lenses and to analyze and discuss TV
distortion, and lateral color, with the focus length of 24 mm, F/# of 1.71, projection distance of 7.2 m, and projection screen size of
200 inches.

 

Using over-bright desk lamp might damage eyes. From our study, only incandescent bulbs permits longer than 30 minutes reading time whether it has background light or not. Warm white LEDs and CFLs also permit 30 minutes reading time only in the absence of background light.

 

In this study, a light used for the tunnel was designed by the value of the radius of reflective curve R, which can meet the requirement of CIE regulations. The experimental result showed the value of R equal 950mm to 1000mm that optimize the illuminations distribution of the output light

 

time doesn't flow at all;it merely is the notion of the passage of time is nonsensical and that talk of the river or flux of time is founded on a misconception,einstein famously expressed this point when he wrote to a friend,the past,present and future are only illusions,even if stubborn ones.

 

We propose a hollow light guide architecture mini-LEDs with asymmetric luminous intensity. An archetype of the proposed architecture for planar light source modules had a width and depth of 51.5 and 9.95 mm, respectively. Experimental results revealed a total efficiency of 83.9% and uniformity of 92.3%.

 

This study investigated to measure large mirror by using high dynamic range Shack-Hartmann wavefront sensor and compared performance with other optical inspection instrument such as interferometer.