There are several aspects of optimizing multi projection system illumination. A main driver in the illumination performance are the light sources, their spectral characteristics, brightness and etendue. The impact of these characteristics on the architecture of illumination design and their implications for key performance metrics such as luminous flux and projectable color space is addressed. The transformative role of solid-state light sources, which have advanced the development of illuminations with high luminous flux and wide color spaces is stressed. The emergence of new challenges posed by the latest generation of coherent light sources is highlighted and advanced illumination design strategies to overcome them are presented.
Microscope objectives with correction function (Corr objective) are reviewed, from its invention in 1830s to the application-oriented development since the second half of 20th century. The aberration theory of correction is also briefly discussed.
The optical design of zoom lenses for projection applications is a task which has to take many different aspects into consideration. The optical designer has to achieve a demanding specification with respect to monochromatic and polychromatic aberrations across a significant magnification range. Besides the requirements on image quality there are usually numerous constraints deriving from fixed mechanical interfaces that already have an impact in the very early design stages of the paraxial and monochromatic design. It has been proven essential to also include cost targets in the figure of merit during the design work. This paper will outline a systematic process for projection zoom lenses design. A solid specification of the design task in terms of magnification range, image quality therein, mechanical and cost requirements is necessary as starting point. Paraxial considerations are helpful to gain insight into the design problem and choose the appropriate zoom design type for further design work. Intermediate designs, which are only monochromatically corrected, proofed invaluable while considering mechanical design requirements. As soon the basic design requirements are fulfilled it makes sense to correct chromatic aberrations. Outstanding color correction requires extensive use of expensive glasses for secondary color correction. In order to find an ideal compromise between potential cost of an optical design and image quality achieved therewith, we employ tools to identify cost drivers as well as tools to simulate the perceived imaging performance. Together these tools also enable us to efficiently discuss specifications that drive cost without aiding perceived image quality.
Optical systems are designed to provide a specific functionality. However, a built optical system shows some deviations from the nominal performance caused by the manufacturing process. This tutorial will demonstrate the tolerancing process using Nijboer-Zernike polynomials as an expression of wave front aberrations. Nijboer-Zernike polynomials are a special form of well-known circle polynomials developed by Zernike. They are orthogonal and have an automatic balancing of aberrations of various orders. The degradation of the Strehl Ratio can be estimated very easily for every single aberration using the value of the specific coefficient. This property is very beneficial for the definition of a tolerance budget.
The optical design of zoom lenses for projection applications is a task which has to take many different aspects into consideration. The optical designer has to achieve a demanding specification with respect to monochromatic and polychromatic aberrations across a significant magnification range. Besides the requirements on image quality there are usually numerous constraints deriving from fixed mechanical interfaces that already have an impact in the very early design stages of the paraxial and monochromatic design. It has been proven essential to also include cost targets in the figure of merit during the design work. This paper will outline a systematic process for projection zoom lenses design. A solid specification of the design task in terms of magnification range, image quality therein, mechanical and cost requirements is necessary as starting point. Paraxial considerations are helpful to gain insight into the design problem and choose the appropriate zoom design type for further design work. Intermediate designs, which are only monochromatically corrected, proofed invaluable while considering mechanical design requirements. As soon the basic design requirements are fulfilled it makes sense to correct chromatic aberrations. Outstanding color correction requires extensive use of expensive glasses for secondary color correction. In order to find an ideal compromise between potential cost of an optical design and image quality achieved therewith, we employ tools to identify cost drivers as well as tools to simulate the perceived imaging performance. Together these tools also enable us to efficiently discuss specifications that drive cost without aiding perceived image quality.
Conference Committee Involvement (7)
Optical Modeling and System Alignment
12 August 2019 | San Diego, California, United States
Optical System Alignment, Tolerancing, and Verification XII
19 August 2018 | San Diego, California, United States
Optical System Alignment, Tolerancing, and Verification XI
6 August 2017 | San Diego, California, United States
Optical System Alignment, Tolerancing, and Verification X
28 August 2016 | San Diego, California, United States
Optical System Alignment, Tolerancing, and Verification IX
9 August 2015 | San Diego, California, United States
Optical System Alignment, Tolerancing, and Verification VIII
17 August 2014 | San Diego, California, United States
Optical System Alignment, Tolerancing, and Verification VII
25 August 2013 | San Diego, California, United States
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