Path Length Patents (Class 359/489.05)
-
Patent number: 11536886Abstract: Rolls of film are described. In particular, rolls of film including multilayer birefringent polarizers having low pass axis variation are described. The multilayer birefringent polarizers have low pass axis variation across a full crossweb width of the roll of film.Type: GrantFiled: June 26, 2018Date of Patent: December 27, 2022Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Kristy A. Gillette, Matthew B. Johnson, Carl A. Stover
-
Patent number: 11402635Abstract: A method may include displaying, to a user, a first color in a first area and a second color in a second area, where (1) the second color has a longer wavelength than the first color and (2) the first and second color have an expected longitudinal chromatic aberration for a human eye. The method may also include receiving, from the user, an indication of whether the user perceives (1) the first area as being clearer than the second area or (2) the second area as being clearer than the first area. The method may further include determining, based on the indication of the user and the expected longitudinal chromatic aberration, information about a refractive error of the user's vision. Various other methods, systems, and devices are also disclosed.Type: GrantFiled: May 24, 2018Date of Patent: August 2, 2022Assignee: Facebook Technologies, LLCInventors: Marina Zannoli, Kristen Bowles, Ryan Michael Ebert, Douglas Robert Lanman, Kevin James MacKenzie
-
Patent number: 10151872Abstract: An optical system is disclosed, which comprises a glass light pipe having an input surface for receiving light from a light source and an output surface through which light exits the light pipe, and a polymeric light pipe optically coupled at its input surface to the output surface of the glass light pipe to receive at least a portion of the light exiting the glass light pipe, said polymeric light pipe having a textured output surface. A plurality of microlenses is optically coupled to said textured surface of the polymeric light pipe, and a projection lens is optically coupled to the output surface of the polymeric light pipe to receive light therefrom.Type: GrantFiled: May 10, 2018Date of Patent: December 11, 2018Assignee: Fraen CorporationInventors: Marco Angelini, Claudia Bigliati, Robert A. Gobron, Rachel Taranta, Natale Baraldo
-
Patent number: 9995872Abstract: An optical system is disclosed, which comprises a glass light pipe having an input surface for receiving light from a light source and an output surface through which light exits the light pipe, and a polymeric light pipe optically coupled at its input surface to the output surface of the glass light pipe to receive at least a portion of the light exiting the glass light pipe, said polymeric light pipe having a textured output surface. A plurality of microlenses is optically coupled to said textured surface of the polymeric light pipe, and a projection lens is optically coupled to the output surface of the polymeric light pipe to receive light therefrom.Type: GrantFiled: June 17, 2016Date of Patent: June 12, 2018Assignee: Fraen CorporationInventors: Marco Angelini, Claudia Bigliati, Robert A. Gobron, Rachel Taranta, Natale Baraldo
-
Patent number: 9632413Abstract: The invention relates to an illumination system of a microlithographic projection exposure apparatus comprising (a) a plurality of channels, each channel guiding a partial beam and at least one channel comprising at least one defect, and (b) at least one optical element arranged within the at least one channel having the at least one defect, the optical element being adapted to at least partially compensate the at least one defect of the partial beam of the channel.Type: GrantFiled: August 22, 2014Date of Patent: April 25, 2017Assignee: Carl Zeiss SMT GmbHInventors: Ingo Saenger, Frank Schlesener
-
Publication number: 20150062701Abstract: There is provided a display device including a lens which guides light from a light source to a display surface, and a compensation member, having an inside surface opposite to a lens surface of the lens divided into a plurality of two-dimensional regions, in which a direction of an advance axis or a delay axis is controlled for each of the regions.Type: ApplicationFiled: August 11, 2014Publication date: March 5, 2015Applicant: Sony CorporationInventor: Ryoko Horikoshi
-
Patent number: 8755113Abstract: An inorganic, dielectric grid polarizer device includes a stack of film layers disposed over a substrate. Each film layer is formed of a material that is both inorganic and dielectric. Adjacent film layers each have different refractive indices. At least one of the film layers is discontinuous to form a form-birefringent layer with an array of parallel ribs having a period less than 400 nm. Another layer, different than the form-birefringent layer, is formed of an optically absorptive material for the ultra-violet spectrum.Type: GrantFiled: June 22, 2007Date of Patent: June 17, 2014Assignee: Moxtek, Inc.Inventors: Eric Gardner, Bin Wang, Mark Davis, John D. Dredge, Jr.
-
Publication number: 20130329228Abstract: A phase-locked delay device, including: an input port configured to receive an input electromagnetic radiation pulse; said input pulse being to be propagated along a propagation direction and having a first linear polarization different from both a first direction, which is orthogonal to the propagation direction, and a second direction, which is orthogonal to the first direction and the propagation direction; an adjustable Babinet-Soleil module optically coupled to said input port, having a first polarization direction parallel to said first direction. The adjustable Babinet-Soleil module is structured to: provide from the input pulse a first pulse polarized along the first direction and a second pulse collinear to said first pulse and polarized along the second direction, and introduce an adjustable group delay between the first pulse and the second pulse ranging from a minim value ?Tm and a maximum value ?TM; the maximum value ?TM being a value greater than 10 fs.Type: ApplicationFiled: June 7, 2012Publication date: December 12, 2013Applicants: CONSIGLIO NAZIONALE DELLE RICERCHE, POLITECNICO DI MILANOInventors: Cristian Angelo MANZONI, Daniele BRIDA, Giulio Nicola Felice CERULLO