Laser Display and Lighting Conference 2018(LDC2018)

Program

April 24 Tue.

LDC1: LDC Plenary
Chairs: Kazuo Kuroda(Utsunomiya University, Japan)
Hiroshi Murata(Osaka University, Japan)

Room 301

Start End Session No. Title Speaker Description
9:15 10:00 LDC1-1Plenary Recent Researches and Activities of Korean 3D Display Society Byoungho Lee
Seoul National University, Korea
I introduce the latest research trends of 3D displays in Korea including super multi-view display and holographic display based on GIGA KOREA project. Also introduced are researches on augmented reality.
10:00 10:45 LDC1-2Plenary IR/R/G/B Laser Diodes for Multi-Wavelength Applications Hidenori Kawanishi
Sharp Corporation, Japan
This paper describes the history of Sharp laser diode development and recent progress in offering a wide wavelength portfolio as a one stop laser supplier for multi-wavelength applications.
10:45 11:00 Break

LDC2: Scanning Systems
Chairs: Masafumi Ide(Magic Leap, Japan)
Fergal Shevlin(DYOPTYKA, Ireland)

Room 301

Start End Session No. Title Speaker Description
11:00 11:30 LDC2-1Invited Laser Holographic Head Up Displays Jamieson Christmas
Envisics Ltd., UK
Laser holographic display technology offers a compelling solution to the challenges of AR-HUD offering larger, brighter displays with low power consumption in a more compact package.
11:30 11:45 LDC2-2 MEMS-Driven Laser Beam Scanning LiDAR: The Future of Variable Spatial Resolution Sensing and Foveated Ranging Jari O. Honkanen, P. Selvan Viswanathan
MicroVision, Inc., USA
This paper explores why LBS technology is especially well suited for LiDAR applications, and how MEMS-driven LBS LiDAR systems offer compelling advantages such as dynamic variable spatial resolution and foveated depth sensing.
11:45 12:00 LDC2-3 Multi-purpose IoT Station Using Scanning Visible Laser Diodes Common to Smart Lighting and LiDAR Masato Ishino1, Toshiyuki Kitamura2, Akira Takamori1, Masahide Okazaki3, Hiroshi Murata4, Junichi Kinoshita1, Noboru Hasegawa2, Masaharu Nishikino2, Kazuhisa Yamamoto1
1Osaka University, Japan,
2National Institute for Quantum and Radiological Science and Technology, Japan,
3Screen Holdings Co., ltd, Japan,
4Graduate School of Engineering Science, Osaka University, Japan
A new concept of IoT station using visible LD-scan technology common to smart lighting and LiDAR-sensing is proposed. The feasibility of this system is verified using a simply-configured prototype system.
12:00 13:00 Lunch

LDC3: Hyper-Realistic Displays 2018
Chairs: Hirotsugu Yamamoto(Utsunomiya University, Japan)
Daisuke Miyazaki(Osaka City University, Japan)

Room 301

Start End Session No. Title Speaker Description
13:00 13:15 LDC3-1Invited Introductory Talk: 3D Displays from PyeongChang to Tokyo Hirotsugu Yamamoto1, 2
1Utsunomiya University, Japan,
2JST, ACCEL, Japan
This talk gives an overview of the hyper-realistic displays in 2018. One of the most significant topics is the application of 3D displays for PyeongChang 2018 Olympics. In Japan, aerial displays are becoming popular.
13:15 13:45 LDC3-2Invited Development of Digital Holographic Display Technology in Giga KOREA Project Minsik Park, Chi-Sun Hwang, Jinwoong Kim
ETRI, Korea
We will discuss the technology development of table-top digital holographic display that enables user to consume the realistic 3D media for tele-experience service in Giga KOREA Project
13:45 14:15 LDC3-3Invited HOPTECH: hologram printing technology and applications Ryutaro Oi, Koki Wakunami, Boaz Jackin, Yasuyuki Ichihashi, Makoto Okui, Kenji Yamamoto
National Institute of Information and Communications Technology, Japan
Wavefront printer is useful to make an optical elements. A hologram printing method that includes holographic optical elements fabrication, duplication of holograms and overlap printing method for better view of holograms is described.
14:15 15:45 LDC3-4Invited Possibilities and Problems of Super-Multiview 3D Display Sung Kyu Kim, Min-Koo Kang, Yong-Jun Kwon, Ki-Hyuk Yoon
Korea Institute of Science and Technology, Korea
SMV 3D display aims for the characteristics of the horizontal parallax only electro-holographic 3D display. But achieving high quality 3D image and human friendly display performance are significant issues for ideal SMV 3D display.
14:45 15:00 LDC3-5 Aerial Protruding DFD Display with AIRR Yoshiki Terashima1, Ryosuke Kujime1, 2, Shiro Suyama3, Hirotsugu Yamamoto1, 2
1The University of Utsunomiya, Japan,
2JST ACCEL, Japan,
3The University of Tokushima, Japan
This paper proposes a novel aerial 3D display, which is based on the protruding DFD display. We form two-layered aerial images with AIRR. We have successfully realized aerial protruding DFD display.
15:00 15:15 Break
15:15 15:45 LDC3-6Invited Integral 3D Display System Using Multiple Display Devices Naoto Okaichi, Hayato Watanabe, Hisayuki Sasaki, Masahiro Kawakita, Tomoyuki Mishina
NHK Science & Technology Research Laboratories, Japan
We are conducting research using multiple display devices to improve the performance of integral 3D images. Each of the research results using direct-view displays and projectors as the display devices will be described in detail.
15:45 16:15 LDC3-7Invited Air Floating Image and Its Applications Using a Dihedral Corner Reflector Array Yuki Maeda
Parity Innovations Co. Ltd., Japan
A distortion-free full-color real image can be displayed in midair using a dihedral corner reflector array. A basis of the dihedral corner reflector array and some applications, such as a floating touch display, are introduced.
16:15 16:30 LDC3-8Invited Challenges Toward Visual Interface Based on Aerial Three-Dimensional Image (Closing Remark) Daisuke Miyazaki
Osaka City University, Japan
Floating three-dimensional (3-D) image formation without any project screen is advantageous for providing interactive operation to the 3-D data directly using fingers or positioning devices. The several studies on aerial 3-D display technologies are described.
16:30 16:45 Break

LDC4: Projection Technology
Chairs: Jari O. Honkanen(MicroVision Inc., USA)
Satoshi Ouchi(Hitachi Consumer Electronics CO., LTD., Japan)

Room 301

Start End Session No. Title Speaker Description
16:45 17:15 LDC4-1Invited Edible Retroreflector for Dynamic Projection Mapping on Foods Hiromasa Oku
Gunma University, Japan
In this presentation, the concept of an edible retroreflector is introduced. Japan agar was found to be adequate material to form it. The prototype was successfully applied to a marker for dynamic projection mapping.
17:15 17:45 LDC4-2Invited 1000fps, 8bit and Low Latency Projector “DynaFlash” Takeshi Yuasa1, Yoshihiro Watanabe2, Masatoshi Ishikawa2
1Tokyo Electron Device Ltd., Japan,
2The University of Tokyo, Japan
High speed projector “DynaFlash” can realize 1000-fps, 8bit depth and 3ms (min) latency based on the Texas Instruments DLP technology and the high-speed control of high-luminance LED.
17:45 18:00 LDC4-3 Spatial-division Multiplexing in Holographic 3D Display using High-speed Binary Phase-mode Spatial Light Modulator Shigehiko Washizu1, Syo Harada1, Xiangyu Quan1, Kouichi Nitta1, Shinya Sato2, Nobuyuki Hashimoto2, Osamu Matoba1
1Kobe University, Japan,
2CITIZEN Watch Co. Ltd., Japan
Experimental demonstration of enlarging viewing zone angle and reconstructed image size of holographic 3D display using a high-speed binary-phase-mode spatial light modulator is presented. In the experiment, three-times enlargement is achieved.
April 25 Wed.

IOT-LDC-LEDIA:
Joint Session (LEDIA, LDC, and IoT-SNAP)

Chairs: Atsushi Kanno(National Institute of Information and Communications Technology, Japan)
Sunao Kurimura(Natinal Institute of Material Science, Japan)
Ryuji Katayama(Osaka University, Japan)

Room 301

Start End Session No. Title Speaker Description
13:30 13:45 Opening talk Hiroshi Murata1, Kenichi Kitayama2, Ryuji Katayama1
1Osaka University, Japan,
2The Graduate School for the Creation of New Photonics Industries, Japan
13:45 14:15 IOT-LDC-LEDIA-1
Invited
Towards the Augmented Internet of Things Huei Ee Yap
LP-Research Inc., Japan
The purpose of the ARcore platform is to provide a customer with a complete system integration to create his own high-performance AR product based on the ARcore.
14:15 14:45 IOT-LDC-LEDIA-2
Invited
Fiber-optic-based Life Cycle Monitoring of Aerospace Composite Structures: Toward Digitalization of Next Generation Aircraft Shu Minakuchi, Nobuo Takeda
University of Tokyo, Japan
This talk will overview our recent activity of composite life cycle monitoring by embedded fiber-optic sensors. Detailed information obtained from composite structures can be utilized to build the digital replicas and to predict their performance.
14:45 15:15 IOT-LDC-LEDIA-3
Invited
Laser Diode Based Underwater Optical Wireless Communication Takao Sawa1, Koji Tojo2, Naoki Nishimura2, Shin Ito3
1JAMSTEC, Japan,
2Shimadzu Corp., Japan,
3SAS Co., Ltd., Japan
We developed an underwater optical wireless communication modem using high power laser diode. 20 Mbps communication speed at 120 m distance, and 32 kbps at 190 m distance were established through underwater tests.
15:15 15:45 break
15:45 16:15 IOT-LDC-LEDIA-4
Invited
Recent Progress of Retinal Imaging Laser Technology Mitsuru Sugawara
QD Laser, Japan
16:15 16:45 IOT-LDC-LEDIA-5
Invited
III-nitride Semiconductor Light Emitting Transistors Kazuhide Kumakura, Junichi Nishinaka, Hideki Yamamoto
NTT Basic Research Laboratories, NTT Corporation, Japan
Light-emitting transistors, which are based on heterojunction bipolar transistors, can output both electric and optical signals with high-frequency modulation. We discuss their potential for optical communication and optoelectronic device applications.
16:45 17:15 IOT-LDC-LEDIA-6
Invited
High Photosensitivity HFET-type Nitride Based Photosensors Motoaki Iwaya1, Tetsuya Takeuchi1, Satoshi Kamiyama1, Isamu Akasaki1, 2
1Meijo University, Japan,
2Nagoya University, Japan
In this presentation, we introduce a GaN-based heterostructure field effect transistor type photosensor featuring high photosensitivity and rejection ratio. These photosensors have many applications such as flame sensor, visible light communication etc.
April 26 Thu.

LDC5: Visible Lasers Connecting Automotive and Human -1-
Chairs: Josef Schug(Lumileds Germany GmbH, Germany)
Shigeto Iwamoto(Honda Motor Co., Ltd., Japan)

Room 301

Start End Session No. Title Speaker Description
9:00 9:30 LDC5-1Invited The Future of Automotive Lighting with Laser Technology Philipp Ansorg, Wolfgang Huhn
AUDI AG, Germany
Laser light sources for car headlamps entered series production and will be improved in performance and safety. New systems combine laser light with a MOEMS mirror scanner, DMD or LCoS to realise new light functionality.
9:30 10:00 LDC5-2Invited Laser Scanning Headlamp Takuya Kitazono, Yasushi Kita, Shinya Hoshino, Taiki Mori, Shuichi Harata, Takao Saito, Yasushi Yatsuda
Stanley Electric co., ltd., Japan
The high-resolution Adaptive Driving Beam by the laser scanning headlamp is effective for the reduction of the night traffic fatal accidents. We demonstrated improvement of the visibility and to guide the driver’s eyes.
10:00 10:30 LDC5-3Invited Application of Laser to Headlamps and Thermal Design Takashi Inoue, Yosuke Ohashi, Takashi Ito
KOITO MANUFACTURING CO.,LTD, Japan
This paper describes how laser diodes can be used for headlamps and their potential as light sources, focusing on headlamp functionality and thermal design.
10:30 10:45 Break

LDC5: Visible Lasers Connecting Automotive and Human -2-
Chairs: Philipp Ansorg(Audi AG, Germany)
Masaru Kuramoto(Stanley Electric Co., Ltd., Japan)

Room 301

Start End Session No. Title Speaker Description
10:45 11:15 LDC5-4Invited Dynamic Laser-based Lighting for Automotive Headlamps Josef Schug, Ulrich Hechtfischer, Roman Hohn, Steffen Zozgornik
Lumileds Germany GmbH, Germany
Laser-based lighting finds its application in car headlighting, particularly in the high beam. First implementations use a single static source. Dynamic beam pattern can be either realized with discrete segmented sources or in an advanced
11:15 11:45 LDC5-5Invited Laser Light Technology for Automotive Applications Paul Rudy, Troy Trottier, Eric Goutain, James Raring
Soraa Laser Diode, Inc., U.S.A.
Conventional sources such as HID, halogen lamps and LEDs have limitations in reliability, size and luminance. We present an overview of laser light, a new solid-state technology featuring the highest luminance demonstrated commercially.
11:45 12:15 LDC5-6Invited GaN-based Laser Diodes for Automotive Applications Takashi Miyoshi, Shingo Masui, Shin-ichi Nagahama
Nichia Corporation, Japan
GaN-based single mode blue and green laser diodes (LDs) were fabricated on c-plane GaN substrates. The wall plug efficiency were 26.5% in 453nm and 12.3% in 515nm, respectively.
12:15 13:30 Lunch

LDC6: Speckle/Color
Chairs: Young-Joo Kim(Yonsei University, Korea)
Shigeo Kubota(Oxide Corp., Japan)

Room 301

Start End Session No. Title Speaker Description
13:30 14:00 LDC6-1Invited The Development of Speckle Reduction Technologies in Our Group for Laser Projection Displays: a Short Summary Zhaomin Tong
Shanxi University, China
In this paper, speckle reduction methods developed in our group are reviewed. The methods include polarization diversity, binary phase diffuser, MEMS scanning mirror, and non-sequential technique.
14:00 14:15 LDC6-2 Image Resolution of Raster-scan Laser Mobile Projectors Considering Color Speckle Effects Junichi Kinoshita1, Akira Takamori1, Kazuhisa Yamamoto1, Kazuo Kuroda2, Koji Suzuki3
1Osaka University, Japan,
2Utsunomiya University, Japan,
3Oxide Corporation, Japan
Image resolution of raster-scan laser mobile projectors was analyzed considering color speckle using a high-speed speckle measurement device. Color speckle has an effect of widening the chromaticity range of various color shifting behavior.
14:15 14:30 LDC6-3 Light Source Coherence and the Impact of Diffusers on the Image Quality of a Holographic Display System Yuanbo Deng, Daping Chu
University of Cambridge, U.K.
We show the relationship between the spatial and temporal coherences of the light source and the image sharpness and speckle in a linear holographic display system and the change due to adding a diffuser.
14:30 14:45 LDC6-4 Theoretical Analysis of Angular Dependency of Speckle Contrast Makio Kurashige, Kazutoshi Ishida
Dai Nippon Printing Co., Ltd., Japan
Angular characteristics of speckle contrast under the moving diffuser condition was analyzed based on the speckle reduction theory. The result was well matched with the theoretical assumption in this report.
14:45 15:00 LDC6-5 Measurement of Chromaticity and Photometric Quantity of Laser Displays by the Discrete Centroid Wavelength Method Keisuke Hieda, Tomoyuki Maruyama, Tomohiro Takesako, Fumio Narusawa
HIOKI E.E. CORPORATION, Japan
The discrete centroid wavelength method can simultaneously measure the centroid wavelength and radiometric quantity of three-color lasers. The accuracy of this new method was experimentally verified by comparing with an optical spectrum analyzer and Si-photodiode.
15:00 15:30 Break

LDC7: Lasers and Light Sources
Chairs: Ichiro Fujieda(Ichiro Fujieda)
Tetsuya Yagi(Mitsubishi Electric Corp., Japan)

Room 301

Start End Session No. Title Speaker Description
15:30 16:00 LDC7-1Invited Watt-class Green and Blue Laser Diodes Masahiro Murayama1, Yusuke Nakayama1, Yukio Hoshina1, Hideki Watanabe1, Noriyuki Fuutagawa1, Hidekazu Kawanishi1, Toshiya Uemura2, Hironobu Narui1
1Sony Corporation, Japan,
2Toyoda Gosei Co., Ltd., Japan
Watt-class green and blue laser diodes were successfully fabricated on semipolar {20-21} plane and c-plane GaN substrates, respectively. These lasers are promising light sources that meet the ITU-R Recommendation BT.2020 for future laser display applications.
16:00 16:30 LDC7-2Invited Development of RGB Light Source for Head-Up Display at Automobile Nan Ei Yu
Gwangju Institute of Science and Technology, Korea
Fiber-based RGB laser light source module is presented. A set of laser diodes are coupled with optical fiber and merged into single output with optical fiber combiner device.
16:30 17:00 LDC7-3Invited Progress in Self-Frequency Doubling Crystal Green Modes and Its Potential Application for Laser Display JiYang Wang, Haohai Yu, Huaijin Zhang
Shandong University, China
SFD crystals and lasers have gained renewed attention and Nd:RECa4O(BO3)3 (RE = Yor Gd) crystals, with SFD lasers becoming commercial products. The promising application of SFD green laser in laser displays was discussed.
17:00 17:15 LDC7-4 Utilizing the Unique Properties of Ceramic Fluorescent Converters for Laser Pumped Phosphor Light-Engines in Digital Projection Volker Hagemann1, Albrecht Seidl1, Kazuyuki Inoguchi2
1SCHOTT AG, Germany,
2SCHOTT Nippon K.K., Japan
Laser pumped phosphors are widely used in solid state based light-engines for digital projection. We compare the properties of ceramic converters to other solutions and present results for irradiance levels up to 230W/mm2 and beyond.
17:15 17:30 LDC7-5 Highly-Reliable Operation under High Case Temperature in 638-nm BA-LD Kyousuke Kuramoto, Shinji Abe, Motoharu Miyashita, Masatsugu Kusunoki, Takehiro Nishida, Tetsuya Yagi
Mitsubishi Electric Corp., Japan
638-nm dual-emitter LD with total emitter width of 150-um showed better characteristics compared with the triple-emitter of 180-um under 55 deg.C, pulse. The LD had MTTF around 26K hours, 1.9 times of the triple.
17:30 17:45 LDC7-6 Spectral Study of a Side-Emitting Laser-Pumped Phosphor Layer Masamichi Ohta, Ichiro Fujieda
Ritsumeikan University, Japan
A side-emitting configuration can utilize the photoluminescence photons trapped in a laser-pumped phosphor layer. Shorter-wavelength photons are lost during lateral light propagation due to self-absorption, leading to an angle-dependent spectrum.
April 27 Fri.

LDC8: Module/Sensor
Chairs: Makio Kurashige(Dai Nippon Printing Co., Ltd., Japan), TBD

Room 301

Start End Session No. Title Speaker Description
9:00 9:15 LDC8-1 High-efficient Light Detection with Double-side Mirror Reflectors for Light Scattering-type Particle Sensor Kenya Nakai, Nozoami Enoki, Shota Nakahara, Takashi Fujiwara, Masaaki Shimada, Nobuo Takeshita
Mitsubishi Electric Corp., Japan
Double-side mirror reflectors structure to detect a scattered light efficiently from small particles for an optical particulate matter sensor is studied in simulation. It enables a light-collection-efficiency to increase and an optical detection-area to expand.
9:15 9:30 LDC8-2 Importance of Three-color Simultaneous Measurement of RGB Laser Diode Modules Keisuke Hieda, Tomoyuki Maruyama, Fumio Narusawa
HIOKI E.E. CORPORATION, Japan
Simultaneous measurement of RGB lasers is important for an accurate evaluation of the optical characteristics of RGB laser diode modules. It is difficult to precisely evaluate their performance if each laser is measured separately.
9:30 9:45 LDC8-3 Correlation between Human Perception and Computer-Predicted Daylight Metrics in an Auditorium Building Aishanura Handina, Nurul Mukarromah, Rizki A. Mangkuto, R. Triyogo Atmodipoero
Institut Teknologi Bandung, Indonesia
Assessments to correlate human perception and computer-predicted metrics of indoor daylighting were conducted in an auditorium in Bandung, Indonesia. The closest relation is found for subjective partially daylit area and the area enclosed with DA150,50%;

LDCp9: Poster Short Presentation
Chairs: Sunao Kurimura(NIMS, Japan)
Tetsuya Yagi(Mitsubishi Electric Corp., Japan)

Room 301

LDCp9: Poster session

Start End Session No. Title Speaker Description
10:30 12:00 LDCp9-1 Fiber-Coupled High-Power RGB Laser Module for Underwater Optical Wireless Communication Ryosuke Nishi1, Koji Tojo1, Naoki Nishimura1, Takao Sawa2
1Shimadzu Corp., Japan,
2JAMSTEC, Japan
We developed fiber-coupled high-power RGB laser module for underwater optical wireless communication. The RGB laser module provides over 3.5-W laser output for each wavelength range of red, green, and blue.
LDCp9-2 Experiment on Colour Mixing Using Tunable Red-Green-Blue Light-Emitting Diode Against Flux Luminous and Chromaticity Coordinates Values Revantino1, 2, Rizki Armanto Mangkuto1, Abdul Rachman Sanjaya1, Jaka Kelana Putra1, F.X. Nugroho Soelami1
1Institut Teknologi Bandung, Indonesia,
2Ministry of Industry of Republic of Indonesia, Indonesia
Experiment was conducted using light-emitting diode with tunability in red-green-blue components. Light intensity of each component was set by microcontroller within variation steps. Results showed variation of green component affected flux luminous and chromaticity values.
LDCp9-3 Optically Tunable Liquid Crystal Broadband Linear-Polarization Rotator Ko-Ting Cheng1, Cheng-Kai Liu1, Chian-Yu Chiu1, Stephen M. Morris2, Min-Cheng Tsai1, Chii-Chang Chen1
1National Central University, Taiwan,
2University of Oxford, U.K.
A linear-polarization rotator based on the optically tunable pitch of chiral-azobenzene-doped liquid crystals has been investigated. The rotation angle is dependent on the pitch and the number of turns of the cholesteric LC helix.
LDCp9-4 Proposal of Protective Filter Adjustment for RGB Lasers Yoshihisa Ishiba, Shinya Kajiri
Yamamoto kogaku co., ltd., Japan
We have reported on the details of protection filter which can adjust optical axis for RGB laser.
LDCp9-5 Portable Camera Based 3D Imaging with Structured Light Ting-Yi Huang1, Wei Min Cheng1, Fan Tim2, J. Andrew Yeh1, Yuan Luo2
1National Tsing Hua University, Taiwan,
2National Taiwan University, Taiwan
Three-dimensional (3D) image reconstruction has been developed for various applications. Here, we proposed a smart phone combined with structured light source to experimentally demonstrate 3D reconstructed images.
LDCp9-6 Utilization of Nanocellulose from Bagasse as Carbon Source on Bcno Synthesis / SiO2 for White Led Lamp I Putu Darma Ruswara, Dafi Adinegoro, Bambang Sunendar, Ahmad Nuruddin
Institut Teknologi Bandung, Indonesia
White LED can be made by transmitting UV light source through phosphor material. Phosphor BCNO Silica is made of nanocellulose from bagasse using sol-gel method and calcination at 600° C and used for LED film.
LDCp9-7 Effect of Luminance and Contrast on Psycho-physiological Response of Dentist in General Examination Room of a Dental Hospital Damarwulan Eka Agustina, Fariza A Alifah, Rizki A. Mangkuto, Suprijanto
Institut Teknologi Bandung, Indonesia
Three variables yield significant effect on subjective error percentage: maximum face luminance, maximum ambient luminance, and contrast of oral-mannequin. The following values are suggested: Lf,max < 3.42 cd/m2, La,max > 2.24 cd/m2, Cm-f < 9.66.
LDCp9-8 Parametric Design for Optimising Dimensions and Specularity of Light Shelves Rialdi Eka Putra, Fathurrahman Feradi, Rizki Armanto Mangkuto, R. Triyogo Atmodipoero
Institut Teknologi Bandung, Indonesia
This study aims to optimise the design parameters of light shelves in an open-plan space, to maximise daylight availability and minimise glare risk, using parametric design with genetic algorithm optimisation.
LDCp9-9 Secure Transmission and analysis of Optical Scanned Holographic Images for Efficient Communication Meril Cyriac, Kanjana G, Anusree L, Leena Thomas, Nelwin Raj N.R, Roshan Varghese
SCT College of Engineering, India
A new approach for the secure transmission of optical scanning holographic image is proposed. The optically scanned holographic image is scrambled using different chaotic maps. This image is converted to a quick response code.
LDCp9-10 Development of Portable Light Therapy Apparatus using LED for Improvement of Sleep and Wakefulness Tomonori Yuasa1, Jun Miura2, Yasumori Sugai3, Yousuke Ito3, Yoshihisa Aizu1
1Muroran Institute of Technology, Japan,
2Hokkaido Pharmaceutical Univ.ersity, Japan,
3DENSEI COMMUNICATION Inc., Japan
We have developed a portable light therapy apparatus for improvement of sleep quality and wakefulness and performed some preliminary experiments. The experimental results demonstrate usefulness of developed portable light therapy apparatus.
LDCp9-11 Understanding the Exposure-time Effect on Speckle Contrast Measurement for Laser Projection with Rotating Diffuser Koji Suzuki, Shigeo Kubota
Oxide Corporation, Japan
We measured speckle contrast for laser projection with a rotating diffuser. The exposure-time effect was observed at slow surface velocity. The exposure time won’t affect speckle contrast of laser displays if temporally-averaging speed is fast.
LDCp9-12 Improvement of Image Blurring for Aerial Image formed by Dihedral Corner Reflector Array using Optimization Processing Daisuke Miyazaki, Shinji Onoda
Osaka City University, Japan
A method to improve blurring in an aerial image formed by a micro mirror array imaging element is proposed. A displayed image is optimized to minimize image blur using simulated annealing algorithm.
LDCp9-13 Forming a Thermal Aerial Image with AIRR Kengo Fujii1, Erina Abe1, Ryosuke Kujime1, 2, Hirotsugu Yamamoto1, 2
1Utsunomiya University, Japan,
2JST ACCEL, Japan
This paper shows the possibility of forming a thermal aerial image with aerial imaging by retro-reflection (AIRR). Although far-infrared rays are absorbed by polymers, near-infrared lights can be retro-reflected and transmit through a beam splitter.
LDCp9-14 Aerial Imaging in a Cylindrical Water Tank with Omnidirectional Erina Abe1, Sho Onose1, Hirotsugu Yamamoto1, 2
1Utsunomiya University, Japan,
2JST ACCEL, Japan
This paper utilizes aerial imaging by retro-reflection (AIRR) for an omnidirectional aerial display. The omnidirectional aerial screen is formed inside a cylindrical water tank, which is aimed for experiments on fish by showing images.
LDCp9-PDP1 The Advantage of Centroid Wavelengths for Precise Evaluation of Laser Displays Keisuke Hieda, T. Maruyama, F. Narusawa
HIOKI E.E. CORPORATION, Japan
The accuracy of a measurement method for the chromaticity and photometric quantity of laser displays using centroid wavelengths was experimentally verified.
12:00 13:00 Lunch

LDC10: Emerging Display
Chairs: Makio Kurashige(Dai Nippon Printing Co., Ltd., Japan), TBD

Room 301

Start End Session No. Title Speaker Description
13:00 13:30 LDC10-1Invited Holographic Accessed Volumetric Displays Kota Kumagai, Yoshio Hayasaki
Utsunomiya University, Japan
Volumetric displays with parallel two- and multi-photon excitations using a computer generated hologram displayed on a liquid crystal spatial light modulator are demonstrated.
13:30 14:00 LDC10-2Invited Dynamic Illumination for Spatio-temporal Integration of Unwanted Interference in Holographic Displays Fergal Shevlin
DYOPTYKA, Ireland
The quality of holographic display imagery is improved using a compact, reliable, optically efficient deformable mirror. So-called subjective speckle that can render text and symbols illegible at viewing distances of several meters, is reduced significantly.
14:00 14:15 LDC10-3 Holographic Real-time Image Projection with Data Compression Paula Adrianna Kochańska, Michał Makowski, Izabela Ducin, Karol Kakarenko, Jarosław Suszek, Marcin Bieda, Adam Kowalczyk
Warsaw University of Technology, Poland
New approach to holographic data compression in real-time holographic transmission with on-the-fly data compression and projection in color between Poland and Japan is presented. Data compression algorithm used in transmission is based on bitplanes extraction.
14:15 14:30 LDC10-4 Optical Addressing of Phase-Modulating Materials for Holographic Projection of Images Joanna Starobrat, Michał Makowski, Piotr Lesiak
Warsaw University of Technology, Poland
The efficiency of real-time holography projection is limited by the SLM pixel density. We propose solutions for purely optical addressing: magnetooptical modulation and implementing LC doped with GNP. Holographic writing for both methods is compared.
14:30 14:45 Break

LDC11: Optical Components
Chairs: Nan Ei Yu(Gwangju Institute of Science and Technology, Korea)
Junichi Kinoshita(Osaka University, Japan)

Room 301

Start End Session No. Title Speaker Description
14:45 15:15 LDC11-1Invited Optimized Algorithm for Freeform Optics Matthew E. Brand
Mitsubishi Electric Research Laboratory, U.S.A.
15:15 15:45 LDC11-2Invited Capabilities in Production of Components and Sub-Assemblies for LIDAR Jan Heller
JENOPTIK Polymer Systems GmbH, Geramny
The challenges in the production of components and sub-modules for LIDAR applications.
15:45 16:00 LDC11-3 High-Speed Multi-Diffraction-Type Electro-Optic Deflector Using Polarization-Reversed Structures Yuta Hayashi1, Hiroshi Murata1, Atsushi Sanada1, Masahide Okazaki2, Masato Ishino1, Kazuhisa Yamamoto1
1Osaka University, Japan,
2SCREEN Holdings Co., Ltd., Japan
We have proposed a new multi-diffraction-type electro-optic deflector using polarization-reversed structures, which can deflect visible laser beams with a high speed. The operational principle, design, and experimental results of the proposed deflector are reported.

LDC12: Post Deadline
Chairs: Sunao Kurimura(NIMS, Japan)
Tetsuya Yagi(Mitsubishi Electric Corp., Japan)

Room 301

Start End Session No. Title Speaker Description
16:00 16:10 LDC12-1 Evaluation of Key Influence Factors to Luminance Lifetime for Laser Projection TV Ruhai Guo, Weidong Liu, Xianrong Liu, Houjian Zhou
Hisense Group limited company, China
Nowadys, the luminance lifetime of laser projection TV is often defined by its laser source lifetime, such as 25000hr because the specification of semiconductor laser diode.
16:10 16:20 LDC12-2 Applicability of CIELAB Volume Metric to the Latest Electronic Display with Eye Adaptation at Medium Grey Scale or with White Boosting Hidefumi Yoshida1, Keita Hirai2, Yoko Mizokami2
1Sharp Corporation, Japan,
2Chiba University, Japan
We found that it is appropriate to adopt CIELAB for checking if the emissive display replicates the original source precisely, but not appropriate if the adaptation point of eyes is at a medium grey scale.
16:20 16:30 LDC12-3 Design and Simulation of a Diffractive Diffuser for Optimizing Speckle Contrast in a Laser MEMS Sscanning Head-Up Displays Giang Nam Nguyen, Ryo Kajiura, Axel Torschmied
Visteon Electronics Germany, Germany
A Diffractive Optical Element is designed as a spot array generator, taking into account the profile and pitch of the laser scanning beam, resulting in a diffusing pattern with low speckle contrast.
16:30 16:40 Award Ceremony Tetsuya Yagi1, Hiroshi Murata2
1Mitsubishi Electric Corp., Japan,
2Osaka University, Japan
16:40 16:45 Closing Talk
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