本文選題：LED + 自由曲面　； 參考：《浙江大學(xué)》2015年碩士論文

【摘要】：如今,隨著越來越多的國家以固態(tài)半導(dǎo)體照明逐漸取代白熾燈、鹵素?zé)舻葹橹鲗?dǎo)的傳統(tǒng)照明,新一代照明光源LED的研究已經(jīng)成為光學(xué)領(lǐng)域的新星。LED以其體積小、亮度高、功耗低、價格便宜、壽命長、節(jié)能環(huán)保等優(yōu)勢,在各個行業(yè)領(lǐng)域均得到了廣泛應(yīng)用。然而,如何對LED進行高效的配光設(shè)計,以期其形成滿足各個應(yīng)用領(lǐng)域要求的照明燈具,成為了一個亟待解決的重大課題�；谧杂汕娴腖ED二次配光元件,設(shè)計自由度高,能夠有效地約束LED的發(fā)光能量分布,并且相較于傳統(tǒng)的配光方式結(jié)構(gòu)相對簡單,可以實現(xiàn)比較復(fù)雜的照明設(shè)計需要,具有非常巨大的研究價值。因此,本文主要針對照明領(lǐng)域中的兩個典型案例——準直照明與均勻照明,來探討如何為LED光源設(shè)計自由曲面光學(xué)系統(tǒng),具體研究內(nèi)容如下：研究了自由曲面初始面形結(jié)構(gòu)設(shè)計方法。首先根據(jù)幾何光學(xué)的基本定律,推導(dǎo)出自由曲面離散點計算的公式,然后又通過能量守恒定律建立LED光源與目標面之間的能量映射網(wǎng)格,并對旋轉(zhuǎn)對稱與非旋轉(zhuǎn)對稱結(jié)構(gòu)的光學(xué)系統(tǒng)能量映射網(wǎng)格進行了逐一分析求解。此外,還通過兩個自由曲面光學(xué)系統(tǒng)的設(shè)計案例來驗證初始結(jié)構(gòu)設(shè)計方法的準確性和可靠性。分別從LED探照燈光學(xué)系統(tǒng)設(shè)計與LED道路照明光學(xué)系統(tǒng)設(shè)計這兩個實例出發(fā),論述了準直照明光學(xué)系統(tǒng)與均勻照明光學(xué)系統(tǒng)的二次配光設(shè)計流程。并分別設(shè)計了一種反射與透射自由曲面相結(jié)合的新型準直系統(tǒng)以及一種可以實現(xiàn)均勻矩形斑照明的自由曲面透鏡。此外,還分別針對這兩種光學(xué)系統(tǒng),設(shè)計了兩種優(yōu)化方法,并進行優(yōu)化設(shè)計,最終均達到了比較理想的光學(xué)效果。
[Abstract]:Nowadays, as more and more countries replace incandescent and halogen lamps with solid state semiconductor lighting, the research of new generation lighting source LED has become a new star in the field of optics with its small size and high brightness. The advantages of low power consumption, low price, long life, energy saving and environmental protection have been widely used in various fields. However, how to design the LED with high efficiency in order to meet the requirements of various application fields has become an important task to be solved. The LED quadratic light distribution element based on free-form surface is designed with high degree of freedom, which can effectively restrain the luminous energy distribution of LED. Compared with the traditional light distribution mode, the structure is relatively simple, and it can realize more complex lighting design needs. It has great research value. Therefore, this paper mainly aims at two typical cases in the field of illumination-collimation lighting and uniform illumination, to discuss how to design a free-form surface optical system for LED light source. The main contents are as follows: the design method of the initial plane structure of free-form surface is studied. According to the fundamental law of geometric optics, the formula for calculating discrete points of free-form surface is derived, and then the energy mapping grid between LED light source and target surface is established by energy conservation law. The energy mapping meshes of optical systems with rotational and non-rotational symmetry structures are analyzed and solved one by one. In addition, the accuracy and reliability of the initial structural design method are verified by two design cases of free-form surface optical system. Based on the two examples of LED searchlight optical system design and LED road lighting optical system design, the secondary light distribution design flow of collimating illumination optical system and uniform illumination optical system is discussed. A new collimation system combining reflection and transmission free-form surfaces and a free-form lens which can realize the illumination of uniform rectangular speckle are designed respectively. In addition, two optimization methods are designed and optimized for the two optical systems.
【學(xué)位授予單位】：浙江大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TM923.34

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