The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In this paper, a new Advanced Driver Assistant System (ADAS) system for LED traffic sign detection algorithm using rectangle shape based on a windowed hough transform and feature based optimization was presented. We used two character to detect the LED traffic sign. One is LED traffic sign have rectangle shape, another is intensity feature of LED traffic sign. After extracting the candidates of LED...
In this study, alkali earth thio-selenide phosphor, SrS x Se 1−x :Eu 2+, was prepared using the conventional solid state reaction method. The synthesized phosphor displayed a broad excitation band that was suitable for blue or near UV LED applications and emitted light at various wavelengths (563–605nm) with different chemical compositions. Like the case of other alkali...
Thio-selenide phosphor, SrGa 2 SeS 3 :Eu 2+ , was prepared using a solid-state chemical reaction method without the addition of toxic gases or other excess materials. The synthesized phosphor displayed a broad excitation band, which is suitable for blue or NUV LED applications and emits green light (528nm). The samples were also excited with various wavelength emitting diodes...
White light emitting diodes (LEDs) were fabricated combining InGaN LED chip as the excitation source and CdSe/ZnSe as the phosphor. CdSe/ZnSe nanoparticles were synthesized via wet chemical method using CdO, zinc stearate, TOP Se as precursors. 4.5 and 5.3 nm diameter CdSe/ZnSe nanoparticles with emission peak at 540 and 620nm, respectively, were obtained. CdSe nanoparticle phosphors were coated onto...
In this work we fabricated white LEDs using a blue InGaN LED precoated conjugated copolymer/QDs composite (green-emitting Poly [(9,9-dioctyl-2,7-divinylenefluorenylene)-alto-co-(2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylene)]/red-emitting CdSe quantum dots) as hybrid phosphor. The emission peak wavelengths of blue, green and red emissions in spectra are 462 and 618 nm respectively. Green-emitting polymer...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.