Uniform concentrating design and mold machining of Fresnel lens for photovoltaic systems

Gao, Xing; Li, Yong; Kong, Quancun; Tan, Qifeng; Li, Chaojiang

doi:10.1007/s00170-018-1591-z

Cited by 2 publications

(2 citation statements)

References 15 publications

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“…To obtain improved optical properties, the precision of the surface texture film is required to be high, and the core technology using the embossing process is used to prepare a high-precision embossing mold [13]. Ultra-precision cutting with a diamond tool can produce microstructural surfaces with roughness values less than 10 nm [14].…”

Section: Of 11mentioning

confidence: 99%

Precision Cutting of the Molds of an Optical Functional Texture Film with a Triangular Pyramid Texture

Huang

et al. 2020

Micromachines

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Based on an analysis of the precision and preparation technology of an optical texture film with a triangular pyramid texture, the technical requirements of the original mold were determined, and precision shaping planning technology was adopted to process the original mold. The shape error of the optical texture mold of the triangular pyramid was assessed by defining the area ratio of the retro-reflection. The influence of the tool nose radius and exit burr on the area ratio of the retro-reflection were analyzed. By optimizing the cutting tools, cutting materials and cutting boundaries, a five-axis ultra-precision machining system was used to plan the triangular pyramid structure with a base length of 115 µm and an included angle between two sides of 70.5°. The experimental results indicate that the dimension error of the triangular pyramid element is less than 1 µm, the angle error of the included angle between two sides is less than 0.05°, and the average roughness of the side of the triangular pyramid can reach 9.2 nm, which satisfies the processing quality requirements of the triangular pyramid texture mold.

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Section: Of 11mentioning

confidence: 99%

Precision Cutting of the Molds of an Optical Functional Texture Film with a Triangular Pyramid Texture

Huang

et al. 2020

Micromachines

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“…On the basis of turning, ultra-precision fly cutting is developed, it is a cutting technology with constant cutting speed and more flexible cutting trajectory, which is suitable for specific micro-structures machining [42][43][44]. Nowadays, the micro-structures fabricated by UPM are more diversified, such as spherical/aspherical lens [45][46][47], multi-focal lens, Fresnel lens [48][49][50][51], polygonal mirror [52], pyramid array [53,54], micro-structure array [55], anti-reflection channel, and V-groove [56,57], etc. [58].…”

Section: Introductionmentioning

confidence: 99%

A Review of Advances in Fabrication Methods and Assistive Technologies of Micro-Structured Surfaces

Zhang

Cao

et al. 2023

Processes

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Micro-structured surfaces possess excellent properties of friction, lubrication, drag reduction, antibacterial, and self-cleaning, which have been widely applied in optical, medical, national defense, aerospace fields, etc. Therefore, it is requisite to study the fabrication methods of micro-structures to improve the accuracy and enhance the performance of micro-structures. At present, there are plenty of studies focusing on the preparation of micro-structures; therefore, systematic review of the technologies and developing trend on the fabrication of micro-structures are needed. In present review, the fabrication methods of various micro-structures are compared and summarized. Specially, the characteristics and applications of ultra-precision machining (UPM) technology in the fabrication of micro-structures are mainly discussed. Additionally, the assistive technologies applied into UPM, such as fast tool servo (FTS) technology and slow tool servo (STS) technology to fabricate micro-structures with different characteristics are summarized. Finally, the principal characteristics and applications of fly cutting technology in manufacturing special micro-structures are presented. From the review, it is found that by combining different machining methods to prepare the base layer surface first and then fabricate the sublayer surface, the advantages of different machining technologies can be greatly exerted, which is of great significance for the preparation of multi-layer and multi-scale micro-structures. Furthermore, the combination of ultra-precision fly cutting and FTS/STS possess advantages in realizing complex micro-structures with high aspect ratio and high resolution. However, residual tool marks and material recovery are still the key factors affecting the form accuracy of machined micro-structures. This review provides advances in fabrication methods and assistive technologies of micro-structured surfaces, which serves as the guidance for both fabrication and application of multi-layer and multi-scale micro-structures.

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Uniform concentrating design and mold machining of Fresnel lens for photovoltaic systems

Cited by 2 publications

References 15 publications

Precision Cutting of the Molds of an Optical Functional Texture Film with a Triangular Pyramid Texture

Precision Cutting of the Molds of an Optical Functional Texture Film with a Triangular Pyramid Texture

A Review of Advances in Fabrication Methods and Assistive Technologies of Micro-Structured Surfaces

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