Formation of Photodetector Optimal Signal in Optical Control Systems
An algorithm for modeling the signal shape of a four-quadrant photodetector when moving an axisymmetric light spot on the detector surface has been developed. The form of direction finding characteristics of the photodetector is calculated for some schemes of illumination of the sensitive surface of...
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| Дата: | 2022 |
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| Формат: | Стаття |
| Мова: | Ukrainian |
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Інститут проблем реєстрації інформації НАН України
2022
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| Назва журналу: | Data Recording, Storage & Processing |
Репозитарії
Data Recording, Storage & Processing| id |
drspiprikievua-article-262693 |
|---|---|
| record_format |
ojs |
| institution |
Data Recording, Storage & Processing |
| collection |
OJS |
| language |
Ukrainian |
| topic |
four-plane photodetector microrelief structure direction finding characteristic mode-ling of focusing optics чотирьохплощинний фотодетектор мікрорельєфна структура пеленгаційна характеристика моделювання фокусуючої оптики |
| spellingShingle |
four-plane photodetector microrelief structure direction finding characteristic mode-ling of focusing optics чотирьохплощинний фотодетектор мікрорельєфна структура пеленгаційна характеристика моделювання фокусуючої оптики Антонов, Є. Є. Зенін, В. М. Лапчук, А. С. Петров, В. В. Токалін, О. О. Formation of Photodetector Optimal Signal in Optical Control Systems |
| topic_facet |
four-plane photodetector microrelief structure direction finding characteristic mode-ling of focusing optics чотирьохплощинний фотодетектор мікрорельєфна структура пеленгаційна характеристика моделювання фокусуючої оптики |
| format |
Article |
| author |
Антонов, Є. Є. Зенін, В. М. Лапчук, А. С. Петров, В. В. Токалін, О. О. |
| author_facet |
Антонов, Є. Є. Зенін, В. М. Лапчук, А. С. Петров, В. В. Токалін, О. О. |
| author_sort |
Антонов, Є. Є. |
| title |
Formation of Photodetector Optimal Signal in Optical Control Systems |
| title_short |
Formation of Photodetector Optimal Signal in Optical Control Systems |
| title_full |
Formation of Photodetector Optimal Signal in Optical Control Systems |
| title_fullStr |
Formation of Photodetector Optimal Signal in Optical Control Systems |
| title_full_unstemmed |
Formation of Photodetector Optimal Signal in Optical Control Systems |
| title_sort |
formation of photodetector optimal signal in optical control systems |
| title_alt |
Формування оптимального сигналу фотодетектора в оптичних системах автоматичного керування |
| description |
An algorithm for modeling the signal shape of a four-quadrant photodetector when moving an axisymmetric light spot on the detector surface has been developed. The form of direction finding characteristics of the photodetector is calculated for some schemes of illumination of the sensitive surface of the detector, which are used to create optical automatic control systems, in particular the systems for motion control and positioning of various objects. It is well-known that any lenses or Fresnel lenses concentrates the light intensities in the center of formed image. For signal processing systems it is necessary to convert a parallel light beam into a uniformly illuminated light circle. Such applications are often used in the optical sensor systems such as the distance laser meters or in the monitoring devices for automatically adjusting the output signal from the four-quadrant photodetector. Now a method for modeling microrelief structures is proposed for creating focusing devices with the flat conical working faces that form a uniformly illuminated light circle with a bright illuminated light ring in its periphery. Some samples of such specified focusing micro-prism devices with illumination distribution of the light spot in the form of circle and ring, which are made according to the results of modeling by the diamond cutting technique, are experimentally investigated. A feature of focusing structures created by the diamond cutting technique is a discrete change in the refractive angles of micro-prismatic zones, resulting in the discreteness of the images formed in the focus. This is a main difference from Fresnel focusing optics with aspherical convex circular surfaces, when the angles of refraction change continuously. In the manufacture of such new devices by the diamond cutting method it is possible to obtain almost mirror working surfaces of a high optical quality. However, the size of such conical refracting zones should not be too large to reduce the discreteness of the formed images, so the new specified focusing micro-prisms are made from several identical prismatic elements. The study of optical and lighting characteristics of experimental samples of focusing elements was carried out, the results of which showed full compliance of experimental data with the obtained theoretical characteristics. Developed specialized concentrator lenses that transform the transmitted light fluxes in the required way can be effectively used in moving object tracking systems instead of the usual pair of diffuser-focusing elements. |
| publisher |
Інститут проблем реєстрації інформації НАН України |
| publishDate |
2022 |
| url |
http://drsp.ipri.kiev.ua/article/view/262693 |
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2024-04-21T19:34:27Z |
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drspiprikievua-article-2626932022-09-11T03:35:59Z Formation of Photodetector Optimal Signal in Optical Control Systems Формування оптимального сигналу фотодетектора в оптичних системах автоматичного керування Антонов, Є. Є. Зенін, В. М. Лапчук, А. С. Петров, В. В. Токалін, О. О. four-plane photodetector, microrelief structure, direction finding characteristic, mode-ling of focusing optics чотирьохплощинний фотодетектор, мікрорельєфна структура, пеленгаційна характеристика, моделювання фокусуючої оптики An algorithm for modeling the signal shape of a four-quadrant photodetector when moving an axisymmetric light spot on the detector surface has been developed. The form of direction finding characteristics of the photodetector is calculated for some schemes of illumination of the sensitive surface of the detector, which are used to create optical automatic control systems, in particular the systems for motion control and positioning of various objects. It is well-known that any lenses or Fresnel lenses concentrates the light intensities in the center of formed image. For signal processing systems it is necessary to convert a parallel light beam into a uniformly illuminated light circle. Such applications are often used in the optical sensor systems such as the distance laser meters or in the monitoring devices for automatically adjusting the output signal from the four-quadrant photodetector. Now a method for modeling microrelief structures is proposed for creating focusing devices with the flat conical working faces that form a uniformly illuminated light circle with a bright illuminated light ring in its periphery. Some samples of such specified focusing micro-prism devices with illumination distribution of the light spot in the form of circle and ring, which are made according to the results of modeling by the diamond cutting technique, are experimentally investigated. A feature of focusing structures created by the diamond cutting technique is a discrete change in the refractive angles of micro-prismatic zones, resulting in the discreteness of the images formed in the focus. This is a main difference from Fresnel focusing optics with aspherical convex circular surfaces, when the angles of refraction change continuously. In the manufacture of such new devices by the diamond cutting method it is possible to obtain almost mirror working surfaces of a high optical quality. However, the size of such conical refracting zones should not be too large to reduce the discreteness of the formed images, so the new specified focusing micro-prisms are made from several identical prismatic elements. The study of optical and lighting characteristics of experimental samples of focusing elements was carried out, the results of which showed full compliance of experimental data with the obtained theoretical characteristics. Developed specialized concentrator lenses that transform the transmitted light fluxes in the required way can be effectively used in moving object tracking systems instead of the usual pair of diffuser-focusing elements. Розроблено алгоритм моделювання форми сигналу чотирьохплощин-ного фотодетектора при переміщенні осесиметричної світлової плями по його поверхні. Розраховано форму пеленгаційних характеристик фотодетектора для деяких схем освітлення чутливої поверхні детектора, які використовуються для створення оптичних систем автоматичного керування, зокрема систем контролю руху та позиціонування різних об'єктів. Експериментально досліджено деякі зразки спеціалізованих фокусуючих мікропризмових пристроїв з розподілом освіт-лення світлової плями у формі кола з кільцем на периферії, які виготов-лено методом алмазного мікроточіння за результатами моделювання. Інститут проблем реєстрації інформації НАН України 2022-06-07 Article Article application/pdf http://drsp.ipri.kiev.ua/article/view/262693 10.35681/1560-9189.2022.24.1.262693 Data Recording, Storage & Processing; Vol. 24 No. 1 (2022); 23-35 Регистрация, хранение и обработка данных; Том 24 № 1 (2022); 23-35 Реєстрація, зберігання і обробка даних; Том 24 № 1 (2022); 23-35 1560-9189 uk http://drsp.ipri.kiev.ua/article/view/262693/259958 Авторське право (c) 2022 Реєстрація, зберігання і обробка даних |