Naotada Okada

64.2: Hyperrealistic Display for Automotive Application

We propose a monocular projection head-up display. It uses monocular vision that eliminates the depth cues caused by parallax information and it can control the depth point of the display image. Through examination in a simulator, we confirmed the enhancement of monocular depth perception.

19.4: Novel Depth Perception Controllable Method of WARP Under Real Space Condition

We developed a compact, 2-liter, monocular head-up display that is WARP-mountable on an automobile. We proposed a novel depth-perception-controllable method and examined the depth perception enhancement characteristics under real space conditions. We confirmed depth perception was controlled as far as 60 meters and true AR was achieved.

36.3: An Organic Light-Emitting Diode with Highly Efficient Light Extraction Using Newly Developed Diffraction Layer

In order to improve light extraction from an organic light emitting diode (OLED), a novel structure of a top emission OLED was proposed by applying the diffraction layer. We have achieved 1.65 times higher light extraction efficiency in case of electroluminescence (EL), and 2.37 times in case of photoluminescence (PL).

Hyperrealistic head-up-display for automotive application

We proposed a novel hyper-realistic head-up display (HUD) concept(WARP) and developed a prototype WARP system. It uses monocular vision that eliminates the depth cues caused by parallax information. Our developed WARP system achieved a free depth control of the HUD image position.

72.4: Hyperreality Head Dome Projector (HDP) using LED Light Source

In this paper, we developed a novel hyperreality display called the Head Dome Projector (HDP). The HDP is a head-mounted display consisting of a dome-shaped screen with a radius of 40 cm, a mobile projector with ultra-wide projection lens and LED light sources. The main feature of the HDP is very wide viewing angle of 115 degrees horizontally by 80 degrees vertically without head tracking and 360 degrees by 360 degrees with head tracking. According to our objective evaluation comparing the HDP with a flat-panel display (FPD), the HDP realizes hyperreality 1.5 to 2.5 points higher than that realized by an FPD in the case of ±5 level evaluation for HD motion images

Development of optical simulation tool for defect inspection

Much effort has been done to detect the defects of interest (DOI) by optical inspection systems because the size of the DOI shrinks according to the design rule of a semiconductor device. Performance of the inspection system is dependent on complicated optical conditions on illumination and collection systems including wavelength and polarization filter. Magnitude of defect signal for a given optical condition was estimated using a simulation tool to find a suitable optical condition and technologies required in the future. This tool, consisting of a near-field calculation using Finite Difference Time Domain (FDTD) methods and an image formation calculation based on Fourier optics, is applicable not only to Köhler illumination system but also to confocal system and dark field system. We investigated defect inspection methods for the 45 nm and the next technology nodes. For inspection of various defects, the system using several wavelengths is suitable. For inspection of a specific defect, the system with polarization control is suitable. Our calculation suggests that the defect detection sensitivity for the 1X nm technology node should be increased by more than 10 times compared to the 45 nm technology node.

Thermal stimulation of laser processing of Si

Transient transmitted power through thin Si substrate (0.35 mm) irradiated with pulsed SHG-(532 nm) and fundamental (1064 nm) Nd:YAG lasers has been calculated to simulate laser marking process using FEM (finite element method). Dependence of attenuation factor on temperature and wavelength is considered. Fraction of transmitted power with a fundamental Nd:YAG laser drastically decreases by irradiation with three pulses from 40% to 5%, while the transmitted power with an SHG-Nd:YAG laser is negligible over the pulses.