Patents by Inventor Vadim Rakhovsky

Vadim Rakhovsky has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10768531
    Abstract: A system that contains a semi-ellipsoidal SLM holder supporting a plurality of flat rectangular SLMs, which are placed onto the semi-ellipsoidal surface of the holder in the most surface-covering way. The system contains a coherent light source placed in the first focal point of the ellipsoid. The second focal point of the ellipsoid defines the area in which an image-receiving object is to be placed. All the SLMs are illuminated by a diverging light beam emitted from the coherent light source. In each SLM, the light is subjected to phase-amplitude modulation and is converted into an image-carrying beam, which convergently fells onto the object on which the target image is to be produced. Thus, a pattern is formed on the object by a maskless method in which a plurality of SLMs are combined into a common image-forming holographic unit.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: September 8, 2020
    Inventors: Vadim Rakhovsky, Vitaly Chernik, Mikhail Borisov, Aleksey Shamaev, Dmitry Chelyubeev
  • Patent number: 10162307
    Abstract: A system for generating a lithographic image contains a light source that emits a diverging light beam and a reflective concave curvilinear surface onto which the diverging light beam falls and which reflects the diverging beam in the form of a converging beam. A digital hologram, which is placed into a diverging beam between the light source and the reflective surface, is coded in accordance with the lithographic image either preliminarily or dynamically, with the use of a spatial light modulator. From the curvilinear surface the spatially modulated beam is reflected in the form of a converging beam which falls onto an image-receiving substrate that is located in the image restoration plane and on which the lithographic image is generated.
    Type: Grant
    Filed: April 5, 2017
    Date of Patent: December 25, 2018
    Inventors: Vadim Rakhovsky, Mikhail Borisov, Aleksey Shamaev, Dmitry Chelyubeev, Vitaly Chernik, Peter Mikheev
  • Publication number: 20180292783
    Abstract: A system for generating a lithographic image contains a a light source that emits a diverging light beam and a reflective concave curvilinear surface onto which the diverging light beam falls and which reflects the diverging beam in the form of a converging beam. A digital hologram, which is placed into a diverging beam between the light source and the reflective surface, is coded in accordance with the lithographic image either preliminarily or dynamically, with the use of a spatial light modulator. From the curvilinear surface the spatially modulated beam is reflected in the form of a converging beam which falls onto an image-receiving substrate that is located in the image restoration plane and on which the lithographic image is generated.
    Type: Application
    Filed: April 5, 2017
    Publication date: October 11, 2018
    Inventors: Vadim Rakhovsky, Mikhail Borisov, Aleksey Shamaev, Dmitry Chelyubeev, Vitaly Chernik, Peter Mikheev
  • Patent number: 9952516
    Abstract: A system for generating a lithographic image contains a alight source that emits a diverging light beam and a reflective concave curvilinear surface onto which the diverging light beam falls and which reflects the diverging beam in the form of a converging beam. A digital hologram, which is coded in accordance with the initial lithographic image either preliminarily or dynamically with the use of a spatial light modulator, is placed into the converging beam between the reflective surface and the image-receiving object. The image of an initial lithographic image formed on the image-receiving object is subsequently used in the processes of microlithography.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: April 24, 2018
    Inventors: Vadim Rakhovsky, Mikhail Borisov, Aleksey Shamaev, Dmitry Chelyubeev, Vitaly Chernik, Peter Mikheev
  • Patent number: 9557711
    Abstract: Proposed is a method of static scaling of an image in holographic lithography. The method consists of generating a final virtual digital hologram of the original pattern through a sequence of mathematical calculations with participation of a virtual coherent light source having a predetermined wavelength ?1 and producing an actual hologram on the basis of the virtual digital hologram of the original pattern. The obtained hologram can be used for forming an actual original pattern in a predetermined size. When it is necessary to produce the original pattern in another size, this can be done by static scaling by merely selecting another wavelength for the laser source with adjustable wavelength. The method allows determining the wavelength range in which scalability is possible with substantially homothetic transformation of the image.
    Type: Grant
    Filed: May 1, 2014
    Date of Patent: January 31, 2017
    Inventor: Vadim Rakhovsky
  • Patent number: 9323219
    Abstract: The invention describes a method of manufacturing a holographic mask capable of producing an image pattern that contains elements of a subwavelength size along with decreased deviations from the original pattern. The original pattern is converted into a virtual electromagnetic field and is divided into a set of virtual cells with certain amplitudes and phases, which are mathematically processed for obtaining the virtual digital hologram. In the calculation of virtual components of the hologram, the method includes a step, wherein as a result of the preliminary divergence of the initial light beam, the entire virtual hologram is increased in proportion to the degree of the divergence of the initial light beam. This facilitate virtual processing of the fine and delicate elements of the virtual hologram. Upon completion of the virtual processing, the final data needed for manufacturing of the actual digital hologram, e.g., on a lithograph, are obtained.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: April 26, 2016
    Inventor: Vadim Rakhovsky
  • Patent number: 9310768
    Abstract: The invention describes a method of manufacturing a holographic mask capable of producing an image pattern that contains elements of a sub-wavelength size along with decreased deviations from the original pattern. The original pattern is converted into a virtual electromagnetic field and is divided into a set of virtual cells with certain amplitudes and phases, which are mathematically processed for obtaining the virtual digital hologram. The calculation of the latter is based on parameters of the restoration wave, which is used to produce the image pattern from the mask, and on computer optimization by variation of amplitudes and phases of the set of virtual cells and/or parameters of the virtual digital hologram for reaching a satisfactory matching between the produced image pattern and the original pattern. The obtained virtual digital hologram provides physical parameters of the actual digital hologram that is to be manufactured.
    Type: Grant
    Filed: December 28, 2013
    Date of Patent: April 12, 2016
    Inventor: Vadim Rakhovsky
  • Publication number: 20150378306
    Abstract: A method and a multi-component illuminator for illumination of a hologram in holographic lithography in which a coherent beam is split into a plurality of individual laser light beams by means of a beam splitter which is provided with a plurality of individual sub-illuminators. Each sub-illuminator has an individual aperture, receives a respective individual coherent light beam, and form a an illumination field on the surface of the hologram during hologram illumination. Altogether the sub-illuminators are combined into a common hologram illuminator. In the multi-component illuminator the individual sub-illuminators are arranged so that the illumination fields cover with the light the maximum possible surface of the hologram during illumination of the latter in the holographic lithography process.
    Type: Application
    Filed: June 30, 2014
    Publication date: December 31, 2015
    Inventor: Vadim Rakhovsky
  • Publication number: 20150185697
    Abstract: Proposed is a method of static scaling of an image in holographic lithography. The method consists of generating a final virtual digital hologram of the original pattern through a sequence of mathematical calculations with participation of a virtual coherent light source having a predetermined wavelength ?1 and producing an actual hologram on the basis of the virtual digital hologram of the original pattern. The obtained hologram can be used for forming an actual original pattern in a predetermined size. When it is necessary to produce the original pattern in another size, this can be done by static scaling by merely selecting another wavelength for the laser source with adjustable wavelength. The method allows determining the wavelength range in which scalability is possible with substantially homotetic transformation of the image.
    Type: Application
    Filed: May 1, 2014
    Publication date: July 2, 2015
    Inventor: Vadim Rakhovsky
  • Publication number: 20150185695
    Abstract: The invention describes a method of manufacturing a holographic mask capable of producing an image pattern that contains elements of a sub-wavelength size along with decreased deviations from the original pattern. The original pattern is converted into a virtual electromagnetic field and is divided into a set of virtual cells with certain amplitudes and phases, which are mathematically processed for obtaining the virtual digital hologram. The calculation of the latter is based on parameters of the restoration wave, which is used to produce the image pattern from the mask, and on computer optimization by variation of amplitudes and phases of the set of virtual cells and/or parameters of the virtual digital hologram for reaching a satisfactory matching between the produced image pattern and the original pattern. The obtained virtual digital hologram provides physical parameters of the actual digital hologram that is to be manufactured.
    Type: Application
    Filed: December 28, 2013
    Publication date: July 2, 2015
    Inventors: Vadim RAKHOVSKY, Mikhail BORISOV, Aleksey SHAMAEV, Dmitry CHELYUBEEV, Aleksandr Gavrikov, Vitaly CHERNIK, Peter MIKHEEV
  • Publication number: 20150185696
    Abstract: The invention describes a method of manufacturing a holographic mask capable of producing an image pattern that contains elements of a subwavelength size along with decreased deviations from the original pattern. The original pattern is converted into a virtual electromagnetic field and is divided into a set of virtual cells with certain amplitudes and phases, which are mathematically processed for obtaining the virtual digital hologram. In the calculation of virtual components of the hologram, the method includes a step, wherein as a result of the preliminary divergence of the initial light beam, the entire virtual hologram is increased in proportion to the degree of the divergence of the initial light beam. This facilitate virtual processing of the fine and delicate elements of the virtual hologram. Upon completion of the virtual processing, the final data needed for manufacturing of the actual digital hologram, e.g., on a lithograph, are obtained.
    Type: Application
    Filed: October 22, 2014
    Publication date: July 2, 2015
    Inventor: Vadim Rakhovsky
  • Publication number: 20060138871
    Abstract: The invention relates to accurate positioning devices which make it possible to displace an object within a nanometric range. The inventive device comprises a fixed base element (BE) provided with accurate and rough positioning steps which are arranged thereon in such a way that they are reciprocatingly movable. The rough positioning step is cinematically connected to the BE and to the accurate positioning step in such a way that they are synchronously movable with respect to the BE. The kinetic connection of said steps is embodied in such a way that the accurate positioning step is autonomously movable with respect to the rough positioning step. Said steps are disposed in such a way that they are autonomously movable with respect to the BE and with respect to each other along two reference axes. The rough positioning step is embodied in a form of a rigid supporting plate, the accurate positioning step being embodied in the form of a rectangular frame which is rigidly fixed to said plate.
    Type: Application
    Filed: May 3, 2003
    Publication date: June 29, 2006
    Inventor: Vadim Rakhovsky