Optical: systems and elements – Collimating of light beam
Patent
1998-06-10
2000-06-13
Kim, Robert H.
Optical: systems and elements
Collimating of light beam
359710, 359718, 359719, G02B 906, G02B 302
Patent
active
060756500
ABSTRACT:
A lens shapes a diverging laser diode beam, and particularly circularizes and collimates, or diverges, or converges the beam. The lens may be part of an optical system, or part of a laser diode assembly. The lens is constituted of a body, the opposite ends of which are spaced from each other. The surfaces of the ends may be toric with the toric centers being coincident with the optical axis. The surfaces also have curvature profiles which circularize and collimates, or diverges, or converges collimates the beam. The curvature profile of one of the first and second surfaces has a correction profile which is a function of Zernike polynomials, thereby reducing wavefront error of the beam exiting the lens. The correction profile is also a function of the offset of the laser diode from the optical axis (misalignment), thereby increasing the misalignment tolerances for beam to lens centering. The curvature profiles of the surfaces may have correction for astigmatism in the beam shape produced by the laser diode. The body of the lens is a single body which may be composed of a single element, or multiple elements integrated into the single body.
REFERENCES:
patent: 4623225 (1986-11-01), Forkner
patent: 4695719 (1987-09-01), Wilwerding
patent: 4846552 (1989-07-01), Veldkamp et al.
patent: 4915484 (1990-04-01), Yamamoto
patent: 4935939 (1990-06-01), Liau et al.
patent: 5148319 (1992-09-01), Gratix et al.
patent: 5321717 (1994-06-01), Adachi et al.
patent: 5467335 (1995-11-01), Braat
patent: 5553174 (1996-09-01), Snyder
patent: 5663980 (1997-09-01), Adachi
Braat, J., "Design of beam-shaping optics", Applied Optics, pp2665-2670, May 20, 1995, vol. 34, No. 15.
Connely et al., "Diffraction Limited Virtual Point Source Microlenses", SPIE vol. 2383, pp. 252-260,(1995).
Faklis, et al., "Continuous phase diffactive optics using laser pattern generation", SPIE Holography Tech. Group Newsletter, vol. 2, Jul. 1993.
Forkner et al., "Characteristics of efficient laser diode collimators", Proc. SPIE vol. 390, pp 156-164 (1983).
Gale, M.T., Rossi, M., Pederson, J., and Schultz, H., "Fabrication of continuous-relief micro-optical elements by direct laser writing in photoresists," Opt. Eng vol. 33, No. 11, pp 3556-3566 (1994).
Kingslake, R., "Fundamentals of Lens Design," Academic Press, Chpt. 3 (1978), pp. 39-40.
Liau, Z.L., et al, "Accurate fabrication of anamorphic microlenses and efficient collimation of tapered unstable-resonator diode lasers," Appl. Phys. Lett., 64(25), pp 3368-3370 (1994).
Malacara, D.(ed), "Optical Shop Testing," John Wiley and Sons, App.2 (1978).
Mroziewicz, B., Bugjski, M., and Nakwaski, W., Physics of Semiconductor Lasers, North-Holland, Chpt. 5 (1991), pp. 225-256.
Rose, T.S., Hinkley, D.A., and Fields, R.A., "Efficient Collection and Manipulation of Laser Diode Output Using Refractive Micro-optics," SPIE vol. 2383, pp 273-277 (1995).
McIntyre Kevin J.
Morris G. Michael
Walsh Kenneth F.
Kim Robert H.
Lee Andrew H.
LuKacher K
Lukacher M.
Rochester Photonics Corporation
LandOfFree
Beam shaping optics for diverging illumination, such as produced does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Beam shaping optics for diverging illumination, such as produced, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Beam shaping optics for diverging illumination, such as produced will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2073944