The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 17, 1987
Filed:
Jul. 06, 1984
Scott D Wilson, Adams County, CO (US);
Storage Technology Partners II, Louisville, CO (US);
Abstract
A combined collimating, cross-section correcting and de-astigmatizing lens system for providing laser beams which, are fully collimated, de-astigmatized, and have a circular cross-section of the proper diameter. In the preferred embodiment a first compound spherical lens system partially collimates the beam so that the in-line combined cross-section corrector/de-astigmatizer system can properly de-astigmatize the beam. The beam cross-section corrector/de-astigmatizer is comprised of first and second triangular prisms oriented at non-normal angles to the path of the beam. This allows both the cross-section and the astigmatism of the beam to be corrected. A planar mirror between the first and second prisms directs the beam from the first prism to the second prism, so that the beam can exit the second prism co-axial with the incident beam path. The beam then enters the second collimating subsystem, which also acts as a telescopic lens system, and simultaneously completely collimates the beam and expands it to the proper diameter for transmission through the optical system of the main device. The beam, upon exiting is fully collimated beam of the proper power output, is de-astigmatized and has a circular cross-section of the proper diameter.