F-sin(theta) lens system and applications

Simon Thibault

doi:10.1117/12.449556

5 December 2001 F-sin(theta) lens system and applications

Simon Thibault

Proceedings Volume 4441, Current Developments in Lens Design and Optical Engineering II; (2001) https://doi.org/10.1117/12.449556
Event: International Symposium on Optical Science and Technology, 2001, San Diego, CA, United States

Abstract

Introducing the desired amount of distortion in an optical system is possible and relatively straight forward for optical designer. Known f-theta lenses used in laser scanner system is one of the most popular lenses of this type. With the development of DWDM system, compact spectrometer and various grating based devices, the interest in solving optical problems with innovative optical design has been a revival. On the other hand, it is possible to simplify considerably the task of the software by designing more sophisticated optical element. The F-sin(theta) lens is such a device which can be used in various grating based devices to improve the performance. This optical device is intended to provide a new lens or lens group which can be used with a diffraction grating to provide a linear output plane with the wavelength (lambda), but also with the order of diffraction (m), or with the grating spatial frequency, or with the inverse of the index of refraction (1/n). Based on theoretical consideration, we calculated which amount of distortion is desired to get linear output plane for a grating based device. We present singlet, achromatic doublet and mirror having this characteristic. These F-sin(theta) lenses present satisfactory distortion characteristic and have an improved correction for the curvature of image plane. F-sin(theta) lens will be also name F-lambda lens.

Citation Download Citation

Simon Thibault "F-sin(theta) lens system and applications", Proc. SPIE 4441, Current Developments in Lens Design and Optical Engineering II, (5 December 2001); https://doi.org/10.1117/12.449556

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