Provided are meta-surface optical device and methods of manufacturing the same. The meta-surface optical device may include a meta-surface arranged on a region of a substrate and a light control member arranged around the meta-surface. The light control member may be arranged on or below the substrate. A material layer formed of the same material used to form the meta-surface may be disposed between the light control member and the substrate. Also, the meta-surface may be a first meta-surface arranged on an upper surface of the substrate, and a second meta-surface may be arranged on a bottom surface of the substrate. Also, the meta-surface may include a first meta-surface and at least one second meta-surface may formed on the first meta-surface, and the light control member may be arranged around the at least one second meta-surface.

In a near-eye optical display system comprising a waveguide and diffractive optical elements (DOEs) configured for in-coupling, exit pupil expansion, and out-coupling, a rainbow phenomenon manifested in the display may be removed or reduced using a polarizing filter at the front of the system so that real-world/stray light entering the system has a particular polarization state, for example TM-polarized. The polarizing filter is utilized in conjunction with a downstream out-coupling DOE that includes diffractive grating structures that are configured to enable sensitivity to an opposite polarization state, for example TE-polarized. An imager is configured to produce virtual-world images that also have a TE-polarized state. The polarization-sensitive out-coupling DOE diffracts the TE-polarized imaging beam out of the grating for display while the TM-polarized light from the real world and/or stray light passes through the grating without diffraction and thus cannot contribute to rainbows in the display.

An optical processor is presented for applying optical processing to a light field passing through a predetermined imaging lens unit. The optical processor comprises a pattern in the form of spaced apart regions of different optical properties. The pattern is configured to define a phase coder, and a dispersion profile coder. The phase coder affects profiles of Through Focus Modulation Transfer Function (TFMTF) for different wavelength components of the light field in accordance with a predetermined profile of an extended depth of focusing to be obtained by the imaging lens unit. The dispersion profile coder is configured in accordance with the imaging lens unit and the predetermined profile of the extended depth of focusing to provide a predetermined overlapping between said TFMTF profiles within said predetermined profile of the extended depth of focusing.

A flat lens system includes a wedge-shaped refractive material having a first surface and a second surface opposite to the first surface for refracting incident light beams from an object having a width of Y, from the first surface towards the second surface; a reflective material positioned at the second surface of the wedge-shaped refractive material for reflecting the refracted light beams at a first angle toward the first surface, wherein the reflected light beams are refracted from the first surface at a second angle to form an image of the object having a width of X and including chromatic aberrations; and an apparatus for processing the image of the object to reduce said chromatic aberrations.

An ocular optical system (EL) comprises, in order from an eye point (EP), a first lens group (G1) having a positive refractive power and a second lens group (G2) having a positive refractive power. The second lens group (G2) includes a cemented lens having two optical members cemented together. A cemented surface of the cemented lens is a diffraction optical surface configuring a diffraction grating. A lens surface on one side in a lens constituting the first lens group (G1) is a first Fresnel surface (FSa), and a lens surface on one side in the cemented lens of the second lens group (G2) is a second Fresnel surface (FSb).

A selective/single plane illumination microscopy (SPIM) arrangement having an illumination device (1) for generating a light sheet (3) illuminating a sample (2); and a detection device (5), comprising a detector (4), for detected light proceeding from the sample (2), is configured and refined in the interest of efficient and low-impact sample investigation with physically simple means in such a way that the detection device (5) comprises a device (6) for allocating different focal planes of the light sheet (3) to different regions (7) of the detector (4).

A phase-adjusting element configured to provide substantially liquid-invariant extended depth of field for an associated optical lens. One example of a lens incorporating the phase-adjusting element includes the lens having surface with a modulated relief defining a plurality of regions including a first region and a second region, the first region having a depth relative to the second region, and a plurality of nanostructures formed in the first region. The depth of the first region and a spacing between adjacent nanostructures of the plurality of nanostructures is selected to provide a selected average index of refraction of the first region, and the spacing between adjacent nanostructures of the plurality of nanostructures is sufficiently small that the first region does not substantially diffract visible light.

There is provided a diffraction optical element which comprises a base material, and in which a first resin layer having a diffraction grating shape and a second resin layer are laminated on the base material. The diffraction grating shape forms a plurality of concentric annular sections when planarly viewed from a lamination direction of the diffraction optical element. The second resin layer comprises a first portion and a second portion, and the first portion is provided on a first annular section of the first resin layer. The second portion is continuously provided from above the first portion to above a region including a periphery of the first resin layer. A difference between a refractive index of the second portion on a center of the first annular section and a refractive index of the second portion on a circumference of the first annular section is within 0.0005.

A lens group for an endoscope or microscope, comprising one or more lens elements, each of uniform refractive index, adapted to: i) focus, with high wavefront aberration correction, driving or excitation light received from an exit tip of an optical waveguide (such as an optical fiber) located substantially against a proximal surface of the lens group to a point observational field with narrow point spread function beyond a distal surface of the lens group (such as outside an optical window located distally relative to the distal surface); and ii) transmit, with high wavefront aberration correction, fluorescence or reflected return light received by the distal surface from the point observational field (and its neighborhood defined by the fluorescence wavelength point spread function) back to the exit tip of the optical waveguide at the fluorescence wavelength.

Methods, systems and devices for diffractive waveplate lens and mirror systems allowing electronically focusing light at different focal planes. The system can be incorporated into a variety of optical schemes for providing electrical control of transmission. In another embodiment, the system comprises diffractive waveplate of different functionality to provide a system for controlling not only focusing but other propagation properties of light including direction, phase profile, and intensity distribution.