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High resolution digital light source design for automotive industry
Machač, Petr ; Rubeš, Ondřej (referee) ; Věchet, Stanislav (advisor)
Digital high definition light sources are a new way of communication between car and other road users. By intelligent switching of high beam or projection of various warning or information symbols on the road a lot of even tragic traffic accidents can be prevented. The purpose of this thesis is to explore contemporary automotive lighting technologies, then to choose the appropriate technology for high definition light source and design a prototype of mechatronic lighting systém.
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The effect of manufacturing inaccuracies on the final light intensity distribution of an automotive headlamp
Březnová, Tereza ; Lysa, Bohuslav (referee) ; Novotný, Jan (advisor)
The thesis deals with the issue of headlamp defects arising during production and their impact on the resulting light trail. The thesis describes and analyses defects arising during individual correction loops. Their analysis was carried out in order to provide measures for other projects. The main defects that have been assessed include the position of the light source, the quality of the optical surfaces and the associated quality of the plating, inaccuracies of the optical surfaces, dimensional variations due to installation technology and defects on the cover glass. The proposed measures concern the pressing tool, accuracy of machining and surface polishing. The thesis also includes designing solutions for quick identification of the surface quality of the cover glass by remote projection. Individual defects were described by their originators, their seriousness and their reparability. Based on this information, recommendations for production are proposed.
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Replacement of headlamp parts screw fixation by a plastic nail
Lysa, Bohuslav ; Píška, Miroslav (referee) ; Polzer, Aleš (advisor)
The master thesis covers several issues linked to a substitution of headlamp screw fixation by a plastic nail. The thesis includes an analysis of the headlamp technology, including description of the prescribed durability tests. On the basis of the analysis some new designs of plastic nails are proposed, consistent with characteristics of plastic materials. Selected outcomes of the analysis have been tested as prototypes and verified with Finite Elements Method in SimDesigner including 3D modeling capabilities provided by the Catia V5. The feasibility study regarding a casting form of the new design of plastic nails and technical economic valuation for contingent assembly mounting is included in the thesis.
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Design of the car headlight
Struhár, Slavomír ; Křenek, Ladislav (referee) ; Škaroupka, David (advisor)
The topic of this bachelor's thesis is design of headlamp for a further unspecified automobile. The first part of the thesis is formed by Overview of current knowledge dedicated to the history, the present and the near future of headlamps of series-production cars. The following sections describe the objectives of the thesis, the process of the design itself and present the final design of the headlamp. The final part evaluates the results of the work with respect to the stated objectives.
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The mounting jig concept for mounting the LED headlight module
Žlebek, Jan ; Kohout, Marek (referee) ; Zeizinger, Lukáš (advisor)
The aim of this thesis is to propose the concept of a universal preparation for mounting the LED module of the headlamp. The first part of the thesis is devoted to individual components of the headlamp, such as printed circuit boards, coolers, optical elements, etc. Furthermore, the thesis provides an overview of the types of modules currently used, from basic reflector technology to the most modern projection modules. The next part of the thesis is focused on conceptual designs for mounting the modules on pallets. It continues by the design of the pallet, which was further verified by the FEM method whether it complies with the given parameters. The last part of the thesis summarizes the advantages and disadvantages in the implementation of the proposed method into the production.
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Vehicle Lighting
Ficza, Tibor ; Huzlík, Rostislav (referee) ; Hájek, Vítězslav (advisor)
This bachelor´s thesis deals with the development of automotive lighting systems. The objective of this thesis is also to show future tendencies in this area, such as the newest solutions and technologies of the headlamps in vehicles.
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Design and optimization of a low beam LED headlamp reflector
Varhaníková, Alžbeta ; Kapusta, Martin (referee) ; Novotný, Jan (advisor)
The diploma thesis deals with the optical design of low beam LED reflector. The thesis aims to optimize the existing low beam LED reflector with an emphasis on achieving a legal and homogeneous light distribution. The theoretical part contains the essay of light sources and optical systems used in headlights, as well as the description of the production technology of LED reflector for different polymeric materials. The experimental part presents a detailed methodology for the optical design of low beam LED reflector in the company software. The thesis also contains a description of the original low beam LED reflector and its problematic parts. The optimization of LED reflector was performed by changing its construction and by the replacement of the light source which increased the robustness of the whole system. In the conclusion, the optimization of LED reflector is evaluated by comparing final light distributions for individual LED reflectors.
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A New Design for Sealing Headlamp Adjusting Screws
Lysa, Bohuslav ; Mrázek, Dušan (referee) ; Samek, František (advisor)
The bachelor thesis covers several issues connected with the sealing of headlamp adjusting screw. The thesis includes analysis of the O-ring fastening and analysis of the fixation adjusting screw in functional position. On the basis of the analyses a new design of O-ring fastening, a new design of the adjusting screw fixation are proposed. Finite Elements Method in SimDesigner software using 3D modeling capabilities provided by Catia V5 were used for calculations and simulations in selected parts of the analysis. The feasibility study regarding adjustments of the existing casting form of the adjusting screw is included in the thesis.
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Tool for measurement goniophotometer
Poledník, Radim ; Klapka, Milan (referee) ; Dvořáček, Jiří (advisor)
The aim of the bachelor’s thesis is to develop a new multipurpose storage for photometric measurement of automotive headlamps and rear lamps. The goal of this device is reduce overall time required to measure samples, mainly rear lamps. The concept takes into account qualitative and quantitative requirements. For example, the effective shielding of light and heat radiation, constant electrical quantities, and easy manipulation in difficult condition of the photometric test halls.
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Optimization of technological parameters of injection plastic parts
Hamáček, Richard ; Hlaváček, Martin (referee) ; Kandus, Bohumil (advisor)
This project is dealt with optimalization of moulding procedure of plastic housing of headlamp for project DCW 204 Mopf halogen. The aim is reach a shorter injection moulding cycle time with keeping of claim quality of plastic part. Optimalization will be done based on modification of moulding pressing time. We observe warpage in axis X in the most problematical points of housing by using of contactless measuring optical technologie ATOS III Triple Scan. Simulation analysis for injection moulding was used for prediction of housing warpage up to unforming in every chosen moulding pressing time. According to reaching data in this way comparison of predicted warpage was able to done up to unforming time and real warpage of housing after unforming. According to reaching data in a different period of time warpage of housing during time flowing was observed.
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