-
Article type: Cover
Pages
Cover1-
Published: May 24, 2013
Released on J-STAGE: September 21, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Article type: Index
Pages
Toc1-
Published: May 24, 2013
Released on J-STAGE: September 21, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Kazutaka SUZUKI, Haruyoshi TOYODA, Naotoshi HAKAMATA, Naoko KIMURA, Ak ...
Article type: Article
Session ID: IST2013-15
Published: May 24, 2013
Released on J-STAGE: September 21, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
We have constructed a noncontact, high-speed and high-accurate blink measurement system by employing an intelligent vision sensor with image-capturing and processing of 1kHz in order to develop a method for measuring brain function from the motion of the eyelid. We have established means for extracting a small eyelid kinematics that has not been extracted as a blink in previous our research. As a result of comparing the kinematics of the eyelid of healthy elderly and patients with Parkinson's disease, we had confirmed that eyelid motion of the patients group was slower and shorter than that of healthy subjects. We also found that small eyelid kinematics of the patients group were frequently observed.
View full abstract
-
Guseul BAEK, Sangman HAN, Kamel MARS, Keita YASUTOMI, Keiichiro KAGAWA ...
Article type: Article
Session ID: IST2013-16
Published: May 24, 2013
Released on J-STAGE: September 21, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
This paper presents a lock-in pixel structure using lateral electric field control for stimulated Raman scattering spectroscopy. It has attractive features for time-resolved CMOS image sensors which are able to transfer charge in high-speed by not through a transfer gate and to modulate different signals simultaneously.
View full abstract
-
Sangman HAN, Keita YASUTOMI, Keiichiro KAGAWA, Shoji KAWAHITO
Article type: Article
Session ID: IST2013-17
Published: May 24, 2013
Released on J-STAGE: September 21, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
This paper presents new structure and method of charge modulation for CMOS time-of-flight range image sensor using pinned photodiodes. Proposed pixel structure allows us to achieve high-speed charge transfer by generating lateral electric field from the light receiving part to charge accumulating part. And this proposed TOF range sensor demodulates photoelectrons generated PPD by using draining gate only and do not use transfer gate for the charge modulation, therefore, it can reduce the noise that is caused by a transfer gate.
View full abstract
-
Takashi TOKUDA, Kazuhiro UEJIMA, Yasumi OHTA, Mayumi MOTOYAMA, Toshihi ...
Article type: Article
Session ID: IST2013-18
Published: May 24, 2013
Released on J-STAGE: September 21, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
Basic concept of continuous glucose monitoring using an implantable CMOS image sensor is proposed and preliminary experiments were performed. Glucose-sensitive fluorescence hydrogel was implemented onto an implantable CMOS image sensor. It was confirmed that fluorescence intensity change of the hydrogel can be detected with on-chip imaging scheme.
View full abstract
-
Futa MOCHIZUKI, Keiichiro KAGAWA, Min-Woong SEO, Keita YASUTOMI, Shoji ...
Article type: Article
Session ID: IST2013-19
Published: May 24, 2013
Released on J-STAGE: September 21, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
We propose a ultra-high-speed CMOS image sensor based on the multi-aperture structure. Every aperture is operated by an independent shutter pattern and accumulates temporally-multiplexed signals in pixel. After that, temporally-resolved ultra-high-speed images are reproduced by solving an inverse problem using the given shutter patterns and a captured multi-aperture image. The time resolution is defined only by on-stage charge transfer time and the clock skew between the apertures. Therefore, we believe that the proposed method realizes the fastest frame rate.
View full abstract
-
Koji NEYA, Keiichiro KAGAWA, Min-Woong SEO, Sang Man HAN, Keita YASUTO ...
Article type: Article
Session ID: IST2013-20
Published: May 24, 2013
Released on J-STAGE: September 21, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
A multi-point measurement of fluorescence correlation spectroscopy (FCS) is expected to observe molecule transportation and interaction. We propose a new method based on the power spectrum which is equivalent to autocorrelation function, instead of conventional time-domain measurement. To aim at high S/N measurement at about video rate, photoelectrons are modulated at high speed by a LEFM (Lateral Electric Field Modulation) structure, and the modulated charge is accumulated to obtain large signal level. The proposed pixels were designed by a device simulator.
View full abstract
-
Hiroyuki HAKOISHI, Toshinori OTAKA, Takayuki HAMAMOTO
Article type: Article
Session ID: IST2013-21
Published: May 24, 2013
Released on J-STAGE: September 21, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
In this paper, we propose the methods of dynamic range expansion and motion blur suppression to obtain appropriate images for the environment recognition using the image sensor whose focal plane is divided into several blocks. This image sensor can control imaging parameters such as exposure time and frame rate for each small block. The method of dynamic range expansion is to adjust exposure time based on average luminance for each block. The method of motion blur suppression is to adjust frame rate based on the position of the moving object.
View full abstract
-
Takafumi Murata, Hiroshi Ikeoka, Takayuki Hamamoto
Article type: Article
Session ID: IST2013-22
Published: May 24, 2013
Released on J-STAGE: September 21, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
We have proposed a method to estimate depth from two images acquired by using two horizontal planes of sharp focus with a tilt optical system. However, for estimating depth with a wide detectable range by our system, calculated amount increases exponentially, because of searching for the optimal solution of two variables. Therefore, we propose the reduction technique of calculated amount by using the optimization problem of only one variable. Moreover, in our conventional system, two horizontal planes of sharp focus are parallel so that the change of the relative sharpness on one coordinate is small, and depth-estimation accuracy becomes worse at extremely far area. Hence, we propose arranging to intersect two planes of sharp focus, and relative sharpness on the each pixel changes a lot. By the new method, the depth estimation with wider detectable range can be possible.
View full abstract
-
Shunichi WAKASHIMA, Yasuyuki GODA, Tsung-Ling LI, Rihito KURODA, Shige ...
Article type: Article
Session ID: IST2013-23
Published: May 24, 2013
Released on J-STAGE: September 21, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
Floating capacitor load readout operation is a new readout operation of pixel signals which uses neither current source nor additional sample/hold capacitor. We evaluated prototype CMOS image sensor using this readout operation. And we confirmed this readout operation is effective for small chip size, low power consumption and high S/N ratio.
View full abstract
-
Yasumasa Koda, Rihito Kuroda, Taiki Nakazawa, Yukihisa Nakao, Shigetos ...
Article type: Article
Session ID: IST2013-24
Published: May 24, 2013
Released on J-STAGE: September 21, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
For sensors with wide light wavelength bandwidth including high ultraviolet light (UV-light) sensitivity and high stability to UV-light, we demonstrated the photodiodes combining the on-chip multilayer dielectric stack using SiO_2 and low extinction coefficient of SiN and the high UV-light sensitivity photodiode technology. These photodiodes with high quantum efficiency (Q.E.) and high stability to UV-light were both successfully obtained and by changing the structure of on-chip multilayer dielectric stack and film thickness, we were able to obtain the photodiode with high external Q.E. at the wavelength we desired in the UV-light region and high stability to UV-light.
View full abstract
-
Kazuya MIYAZAWA, Hironari TAKEHARA, Daisuke OKABAYASHI, Kiyotaka SASAG ...
Article type: Article
Session ID: IST2013-25
Published: May 24, 2013
Released on J-STAGE: September 21, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
We developed an ultra-small lensless on-chip fluorescence measurement device for a digital ELISA, which is expected as a method for very early diagnosis of cancer or infection with a virus. We succeeded in high-resolution observation by the image restoration with deconvolution processing. The field of view can be easily extended due to its lensless structure. In the future, we apply it to a digital ELISA system, which has detection sensitivity of million times higher than the conventional ELISA method, and aim to realize a molecular measurement system with ultra-high sensitive and quantitative performance.
View full abstract
-
Makito HARUTA, Chikara KITSUMOTO, Yoshinori SUNAGA, Hironari TAKEHARA, ...
Article type: Article
Session ID: IST2013-26
Published: May 24, 2013
Released on J-STAGE: September 21, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
Observation of brain neuronal activates under freely moving condition is very important to elucidate brain functions of an animal. In this study, we developed an ultra-small implantable CMOS imaging device and successfully captured a fine image of the brain surface as implanted in a rat head. Moreover, we obtained neural responses of the primary sensory cortex according to sensory stimuli by using the implantable imaging device for intrinsic signal detection. Intrinsic signal imaging methods enable long term observation because it is not affected by bleaching and washout of stain solution. Our proposed technique realizes brain observation with low limitation of behavior under freely moving condition.
View full abstract
-
Takao Kuroda
Article type: Article
Session ID: IST2013-27
Published: May 24, 2013
Released on J-STAGE: September 21, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
A way how to understand image sensors will be presented.
View full abstract
-
Article type: Appendix
Pages
App1-
Published: May 24, 2013
Released on J-STAGE: September 21, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Article type: Appendix
Pages
App2-
Published: May 24, 2013
Released on J-STAGE: September 21, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Article type: Appendix
Pages
App3-
Published: May 24, 2013
Released on J-STAGE: September 21, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS