本文關(guān)鍵詞： 透鏡中心厚度 色差共焦原理 設(shè)備研制 系統(tǒng)設(shè)計(jì)　出處：《中國(guó)科學(xué)院研究生院(長(zhǎng)春光學(xué)精密機(jī)械與物理研究所)》2015年碩士論文　論文類(lèi)型：學(xué)位論文

【摘要】：透鏡應(yīng)用廣泛,而透鏡中心厚度是透鏡的一個(gè)重要參數(shù),其對(duì)透鏡的焦距以及光學(xué)系統(tǒng)的成像質(zhì)量均有較大影響。透鏡中心厚度的加工是否滿足要求,需要高精度的測(cè)量設(shè)備對(duì)其進(jìn)行測(cè)量。故此研制一款高精度、快速、簡(jiǎn)便、穩(wěn)定性好的透鏡中心厚度測(cè)量設(shè)備是十分必要的。為了能夠快速,簡(jiǎn)便地測(cè)量透鏡中心厚度,本文基于色差共焦原理研制了一款透鏡中心厚度測(cè)量設(shè)備,它的測(cè)量范圍廣、測(cè)量精度高、測(cè)量時(shí)間短、測(cè)量方法簡(jiǎn)便且穩(wěn)定性好。本文的主要研究工作如下:1.根據(jù)現(xiàn)有的透鏡中心厚度測(cè)量設(shè)備的技術(shù)路線及發(fā)展趨勢(shì),選擇使用色差共焦法對(duì)透鏡中心厚度進(jìn)行測(cè)量。本文詳細(xì)地研究了色差共焦原理以及利用色差共焦原理對(duì)透鏡中心厚度進(jìn)行測(cè)量的機(jī)理,研究表明利用色差共焦法進(jìn)行透鏡中心厚度測(cè)量是一種可行的、簡(jiǎn)便的、快速的方法。2.完成了色差共焦系統(tǒng)出射光光譜帶寬進(jìn)行了研究,為色差共焦系統(tǒng)的設(shè)計(jì)提供科學(xué)的指導(dǎo)。研究表明:色差共焦系統(tǒng)像方數(shù)值孔徑,共焦小孔尺寸,出射光光譜峰值波長(zhǎng)等都會(huì)影響共焦小孔處出射光光譜帶寬。3.根據(jù)測(cè)量原理以及測(cè)量需求,完成了設(shè)備設(shè)計(jì)指標(biāo)的確定以及可行性分析。將該設(shè)備的最大測(cè)量值設(shè)計(jì)為30 mm左右,測(cè)量精度為±6μm以?xún)?nèi)。4.完成了色差共焦系統(tǒng)的設(shè)計(jì)及其子系統(tǒng)的設(shè)計(jì)和選擇,其中包括光源、色差鏡頭、共焦小孔、分光系統(tǒng)等,為色差共焦系統(tǒng)的設(shè)計(jì)提供科學(xué)指導(dǎo)以及參考。5.設(shè)計(jì)了透鏡中心定位方法,該方法能夠快速、簡(jiǎn)便地找到透鏡的頂點(diǎn)位置。大大地簡(jiǎn)便了調(diào)節(jié)被測(cè)透鏡的光軸與色差鏡頭的光軸共線的過(guò)程。利用這種方法,可以在在很大程度上減少測(cè)量所需要的準(zhǔn)備時(shí)間。6.編寫(xiě)了透鏡中心厚度計(jì)算程序,并詳細(xì)介紹了透鏡中心厚度的計(jì)算方法,其中包括峰值波長(zhǎng)的測(cè)量方法以及透鏡的厚度的計(jì)算算法。7.利用研制出的設(shè)備,對(duì)一系列的標(biāo)準(zhǔn)厚度的透鏡進(jìn)行測(cè)量實(shí)驗(yàn),實(shí)驗(yàn)結(jié)果表明該測(cè)量設(shè)備最大測(cè)量范圍可達(dá)30 mm,精度為±5μm,測(cè)量時(shí)間小于2 s,適用于大批量透鏡中心厚度檢測(cè)。
[Abstract]:Lens is widely used, and the thickness of lens center is an important parameter of lens, which has great influence on the focal length of lens and the imaging quality of optical system. Therefore, it is necessary to develop a high precision, fast, simple and stable measuring equipment for measuring the thickness of lens center. It is easy to measure the thickness of lens center. Based on the color-aberration confocal principle, a device for measuring the thickness of lens center is developed in this paper. It has the advantages of wide measuring range, high measuring precision and short measuring time. The measurement method is simple and stable. The main research work of this paper is as follows: 1. According to the technical route and development trend of the existing lens center thickness measuring equipment. Color difference confocal method is chosen to measure the thickness of lens center. The principle of color difference confocal and the mechanism of measuring the thickness of lens center by color difference confocal principle are studied in detail in this paper. The results show that it is feasible, simple and fast to measure the thickness of lens center by using the chromatic confocal method. 2. The spectral bandwidth of the output light of the chromatic confocal system is studied. It provides scientific guidance for the design of color aberration confocal system. The research shows that the image square numerical aperture and the size of confocal hole of chromatic confocal system are obtained. The peak wavelength of the output light spectrum will affect the spectral bandwidth of the confocal aperture. 3. According to the measurement principle and measurement requirements. The design index and feasibility analysis of the equipment are completed, and the maximum measuring value of the equipment is designed to be about 30 mm. The measuring accuracy is within 鹵6 渭 m. 4. The design of color difference confocal system and its sub-system are completed, including light source, chromatic lens, confocal aperture, light splitter system and so on. Provide scientific guidance for the design of color aberration confocal system and reference .5. design the lens center location method, this method can be rapid. The vertex position of the lens can be easily found. The process of adjusting the collinear between the optical axis of the measured lens and the optical axis of the chromatic aberration lens is greatly simplified. The preparation time required for measurement can be reduced to a great extent. 6. A program for calculating the thickness of the lens center is developed, and the calculation method of the thickness of the lens center is introduced in detail. Which includes the peak wavelength measurement method and lens thickness calculation algorithm .7.Using the developed equipment, a series of standard thickness lens measurement experiments are carried out. The experimental results show that the maximum measuring range is 30 mm, the accuracy is 鹵5 渭 m, the measuring time is less than 2 s, and it is suitable for measuring the thickness of the lens center in large quantities.
【學(xué)位授予單位】：中國(guó)科學(xué)院研究生院(長(zhǎng)春光學(xué)精密機(jī)械與物理研究所)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：TH74

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