Design method of high-efficient LED freeform optical system for aeronautical ground light

2011 ◽  
Author(s):  
Shang Wang ◽  
Fei Chen ◽  
Kai Wang ◽  
Quan Chen ◽  
Zhili Zhao ◽  
...  
Keyword(s):  
Optical System ◽  
Design Method ◽  
High Efficient

scholarly journals Asymmetric Double Freeform Surface Lens for Integrated LED Automobile Headlamp

Micromachines ◽  
2021 ◽  
Vol 12 (6) ◽  
pp. 663
Author(s):  
Hui Zhang ◽  
Dengfei Liu ◽  
Yinwan Wei ◽  
Hong Wang
Keyword(s):  
Optical System ◽  
Design Method ◽  
Chromatic Dispersion ◽  
Electronic Devices ◽  
Color Temperature ◽  
Freeform Surface ◽  
United Nations Economic Commission ◽  
System A ◽  
Economic Commission ◽  
Key Points

We propose a design method of asymmetric double freeform surface lens for an integrated LED automobile headlamp and develop an integrated LED automobile optical system. A single asymmetric double freeform surface lens is designed to redistribute rays emitting from the light source for realizing both low and high beams. Moreover, a freeform surface reflector is used to improve the energy efficiency of high beams. The prism placed in the optical path can suppress chromatic dispersion on the edge of the target plane. Simulation and experimental results show that the illumination values and color temperature of the key points can fully meet the requirements of United Nations Economic Commission for Europe vehicle regulations (ECE) R112, 48, and 128. The volume of the whole optical system comprised of freeform surface elements is smaller than that of the low beam system of a traditional headlamp, resulting in saved space, in which other electronic devices can be installed for the safety of the driver, which indicates that the proposed method is practical in the field of automobile lighting.

Design method of infrared microscope optical system with lower aberration compensation

2021 ◽  
Vol 50 (2) ◽  
pp. 20200153-20200153
Author(s):  
刘智颖 Zhiying Liu ◽  
吕知洋 Zhiyang Lv ◽  
高柳絮 Liuxu Gao
Keyword(s):  
Optical System ◽  
Design Method ◽  
Infrared Microscope

Design of High-Efficient Bits for Igneous Rock in Xushen Gasfield

2013 ◽  
Vol 385-386 ◽  
pp. 308-311
Author(s):  
Li Gang Zhang ◽  
Tie Yan ◽  
Shi Bin Li
Keyword(s):  
Tungsten Carbide ◽  
Design Method ◽  
Polycrystalline Diamond ◽  
High Hardness ◽  
Rake Angle ◽  
Gas Field ◽  
Working Face ◽  
High Efficient ◽  
Low Efficiency ◽  
Bit Life

The igneous rocks in deep formations of the Xushen gasfield have the following characters: high abrasive property, high hardness, and high drillability, which lead to many drill bit accidents, few footage per bit , low efficiency of drilling, long drilling cycle, these severely restrict the exploration and development process of gas field. According to the features of deep formation, a hybird cutters bit is designed. It has three cones, with the overhang cone , duplicate taper and offset cone characters. The tungsten carbide cutters and the polycrystalline diamond compacts cutters are alternative collocation in the same tooth row in the bit. The exposed height of the tungsten carbide cutters is higher than polycrystalline diamond compacts cutters. The back rake angle of polycrystalline diamond compacts cutters is 10 ~ 40 °, the side rake angle is 10 ~ 30 °. The normal direction of working face stay the same with the composite slip direction, and the side rake pointed at adjacent gullet. Through the design method, it is integrated that the advantages of roller bit and PDC bit, the way of impact breakage and rotational shear breakage and the prominent performance of tungsten carbide cutters and polycrystalline diamond compacts cutters. It can improveROP and bit life.

Optical System Design with High Resolution and Large Field of View for the Remote Sensor

2007 ◽  
Vol 364-366 ◽  
pp. 550-554
Author(s):  
Jun Chang ◽  
Zhi Cheng Weng ◽  
Yong Tian Wang ◽  
De Wen Cheng ◽  
Hui Lin Jiang
Keyword(s):  
High Resolution ◽  
Optical System ◽  
Design Method ◽  
Field Of View ◽  
Large Field ◽  
Wide Field ◽  
Remote Sensor ◽  
Wide Field Of View ◽  
Technological Developments ◽  
Technological Opportunities

In this paper, we are presenting a design method and its results for a space optical system with high resolution and wide field of view. This optical system can be used both in infrared and visible configurations. The designing of this system is based on an on-axis three-mirror anastigmatic (TMA) system. Here the on-axis concept allows wide field of view (FOV) enabling a diversity of designs available for the Multi-Object Spectrometer instruments optimized for low scattered and low emissive light. The available FOVs are upto 1º in both spectrum ranges, whereas the available aperture range is F/15 - F/10. The final optical system is a three-mirror telescope with two on-axis and one off-axis segment and its resolution is 0.3m or even lower. The distinguished feature of this design is that it maintains diffraction-limited image at wide wavelengths. The technological developments in the field of computer generated shaping of large-sized optical surface details with diffraction-limited imagery have opened new avenues towards the designing techniques. Such techniques permit us to expand these technological opportunities to fabricate the aspherical off-axis mirrors for a complex configuration.

scholarly journals Design method for infrared elliptical dome optical system with wide field-of-regard

2013 ◽  
Vol 32 (3) ◽  
pp. 259 ◽  
Author(s):  
Chao WANG ◽  
Xin ZHANG ◽  
Ling-Jie WANG ◽  
He-Meng QU ◽  
Chao WANG
Keyword(s):  
Optical System ◽  
Design Method ◽  
Wide Field

scholarly journals A Study on the Effect of Performance Factor on GSHP System through Real-Scale Experiments in Korea

Energies ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 554
Author(s):  
Hongkyo Kim ◽  
Yujin Nam ◽  
Sangmu Bae ◽  
Jae Sang Choi ◽  
Sang Bum Kim
Keyword(s):  
Heat Pump ◽  
System Performance ◽  
Storage Tank ◽  
Heat Storage ◽  
Design Method ◽  
Ground Source Heat Pump ◽  
Pump System ◽  
Heat Pump System ◽  
Ground Source ◽  
High Efficient

A ground source heat pump system is one of the high-efficient technologies for space heating and cooling since it uses stable underground temperature. However, in actual application, many situations cannot be achieved due to the unsuitable design of operation. In particular, the design characteristics of buildings with different building load patterns are not reflected by the conventional design method. Moreover, the design capacity of the heat pump can be reduced by designing less capacity than the peak load through the introduction of the heat storage tank, but there is no related quantitative design method. Therefore, in this study, the effect of the ground source heat pump system design factors such as shape, length of the ground heat exchanger, and the capacity of the heat storage tank on the system performance was analyzed. To quantify the effect of such factors on system performance, an experimental plant was constructed and case studies were conducted for each design factor.

Design and Realization of Helical Rotor NC Automatic Programming System

2012 ◽  
Vol 605-607 ◽  
pp. 1469-1473
Author(s):  
Feng Chen ◽  
Liang Yao Gu ◽  
Yue Yang ◽  
Chun Yang Jia
Keyword(s):  
Design Method ◽  
Numerical Control ◽  
Programming System ◽  
Automatic Programming ◽  
Geometrical Properties ◽  
Object Oriented Design ◽  
High Efficient ◽  
Nc Machine ◽  
Rotor Surface ◽  
Migration Method

Helical rotor is a core component of helical-lobe compressor. Analysis was made on the geometrical properties of tooth curves. Using standard spherical milling cutter on 4-axis NC machine, normal migration method was used to rotor surface processing. Based on the generation characteristics of helical rotor surface, object-oriented design method is used to achieve automatic programming system of helical rotor. The calculation of helical rotor end face profile lines and cutter location point are realized, and over cutting analysis is carried out to generate high efficient numerical control processing program.

Design Method of Optical System of Improved Czerny-Turner Imaging Spectrometer

2012 ◽  
Vol 32 (3) ◽  
pp. 0322007 ◽  
Author(s):  
刘健鹏 Liu Jianpeng ◽  
唐义 Tang Yi ◽  
黄刚 Huang Gang ◽  
张止戈 Zhang Zhige ◽  
倪国强 Ni Guoqiang
Keyword(s):  
Optical System ◽  
Design Method ◽  
Imaging Spectrometer

Optimization Design Method for Optical System of Prism-Grating Ultraspectral Imaging Spectrometers

2014 ◽  
Vol 34 (9) ◽  
pp. 0911003 ◽  
Author(s):  
杨增鹏 Yang Zengpeng ◽  
唐玉国 Tang Yuguo ◽  
巴音贺希格 Bayanheshig ◽  
潘明忠 Pan Mingzhong ◽  
崔继承 Cui Jicheng ◽  
...  
Keyword(s):  
Optical System ◽  
Optimization Design ◽  
Design Method

Sensitivity theoretical analysis and desensitization design method for reflective optical system based on optical path variation

2021 ◽  
Vol 29 (1) ◽  
pp. 72-83
Author(s):  
Qing-yu MENG ◽  
◽  
Hong-yuan WANG ◽  
Wei WANG ◽  
Zi-chang QIN ◽  
...  
Keyword(s):  
Theoretical Analysis ◽  
Optical System ◽  
Design Method ◽  
Optical Path
Sign in / Sign up

Export Citation Format

Share Document