A method for manufacturing a radial or azimuthal polarization conversion component comprises the steps of: placing a holographic recording material between two right-angle prisms, wherein the holographic recording material is divided into at least four sector-shaped areas and is partially shielded, and only one of the sector-shaped areas is exposed each time; allowing a recording light to pass through the right-angle prisms and the exposed sector-shaped area of the holographic recording material and to interfere with a reflected object light on the holographic recording material; rotating the holographic recording material to expose the other sector-shaped areas one by one to be constructed for manufacturing volume holograms with diffraction angles of 48.19 degrees, 60 degrees or about 85 degrees.

A holographic imaging device and method realizes both a transmission type and a reflection type, and also realizes a long working distance wide field of view or ultra-high resolution. Object light emitted from an object, sequentially illuminated with parallel illumination light whose incident direction is changed, is recorded on a plurality of object light holograms for each incident direction using off-axis spherical wave reference light. The reference light is recorded on a reference light hologram using in-line spherical wave reference light being in-line with the object light. An object light wave hologram and its spatial frequency spectrum at the object position are generated for each incident direction using each hologram. A synthetic spectrum which occupies a wider frequency space is generated by matching each spectrum in the overlapping area, and a synthetic object light wave hologram with increased numerical aperture is obtained thereby.

Provided are a morphological cell parameter-based erythrocyte test method and digital holographic microscope used therein, and the morphological cell parameter-based erythrocyte test method includes performing modeling to create a 3D image of an erythrocyte to be tested and measuring morphological parameters of the erythrocyte based on the 3D image.

The morphological cell parameter-based erythrocyte test method performs modeling of a 3D image for an erythrocyte to be tested and measures morphological parameters of the erythrocyte based on the 3D image. Therefore, time and effort consumed in measurement may be reduced, and accuracy of the measurement is excellent.

Provided are on-axis and off-axis digital hologram generating device and method.

The on-axis and off-axis digital hologram generating device includes a controller and an input window configured to receive user input of hologram property information. The controller is configured to access a phase file of an object stored in a storage device, convert the phase file of the object into object phase information in a useable form, generate digital object light information based on a light property of object light input by a user and the converted object phase information, and generate a digital hologram based on (i) the received hologram property information, (ii) the generated digital object light information, and (iii) digital reference light information inputted by a user.

A holographic recording system includes a linear translation stage configured to position a holographic material layer, a light source configured to emit a laser beam, a beam splitting subsystem configured to split the laser beam into a first light beam and a second light beam and direct the second light beam towards the holographic material layer, a spatial-light modulator configured to implement a fringe pattern that modulates the first light beam to generate an object beam, a filter configured to filter the object beam, a demagnification optical subsystem configured to demagnify the object beam, and a switchable grating stack configurable to direct the object beam to a set of directions towards the holographic material layer to interfere with the second light beam. In some embodiments, the switchable grating stack includes a plurality of polarization gratings and/or a plurality of switchable waveplates arranged in a stack.

An advanced method of and apparatus for manipulating electromagnetic spectra, which incorporates a bent tepee or bent pyramidal aligned array of conical or pyramidal inverted sections that have at least two intrinsic angles of differing values aligned co-axially. These are arranged to naturally produce a reference and object waves that impinges on and illuminate a holographic plate or recording means to produce on-axis or in-line transmission and reflection holograms, including real time display. The technology is also applicable to the detection, identification, and/or decoding of genetic material, specifically DNA and the Human Genome.

Provided are on-axis and off-axis digital hologram generating device and method. The on-axis and off-axis digital hologram generating device includes an object phase generator configured to access a phase file of an object stored in a storage device and generate object phase information from the phase file of the object; a digital object light generator configured to generate digital object light information based on a light property of object light input by a user and the object phase information generated by the object phase generator; a digital reference light generator configured to generate digital reference light information based on a light property of reference light input by the user; and a digital hologram generator configured to generate a digital hologram based on hologram property information input by the user, the digital object light information generated by the digital object light generator, and the digital reference light information generated by the digital reference light generator.

Provided are methods for replication (copying) of volume Holographic Optical Elements (HOE) using a master hologram in optical contact with a prism, wherein the master hologram comprises distinct object and reference beam coupling elements, and wherein in the replication process light is coupled from one face of the prism and transmitted through another face of the prism using the distinct object and reference beam coupling elements. Methods for making the master hologram by sequentially forming the distinct object and reference beam coupling elements therein are provided. Further methods for encoding aperture functions directly to the master hologram are provided. Yet further methods provide for forming a copy HOE in an array configuration using a step-and-repeat method wherein the copy HOE is translated laterally by a specified distance before the next exposure is made.

A method is provided. The method includes directing a first beam to a polarization sensitive recording medium. The method also includes directing a second beam to the polarization sensitive recording medium to interfere with the first beam to generate a polarization interference pattern, to which the polarization sensitive recording medium is exposed. One of the first beam and the second beam has a planar wavefront and the other has a non-planar wavefront. A first propagation direction of the first beam and a second propagation of the second beam are non-parallel.

Provided are methods for replication (copying) of volume Holographic Optical Elements (HOE) using a master hologram in optical contact with a prism, wherein the master hologram comprises distinct object and reference beam coupling elements, and wherein in the replication process light is coupled from one face of the prism and transmitted through another face of the prism using the distinct object and reference beam coupling elements. Methods for making the master hologram by sequentially forming the distinct object and reference beam coupling elements therein are provided. Further methods for encoding aperture functions directly to the master hologram are provided. Yet further methods provide for forming a copy HOE in an array configuration using a step-and-repeat method wherein the copy HOE is translated laterally by a specified distance before the next exposure is made.