A nanocomposite-ink refractive gradient optic with variable focus optic comprising a first optical-element, a second optical-element, each the optical-elements comprised of a cured nanocomposite-ink wherein the first and second optical-element have a cubic volumetric gradient complex optical index such that when arranged in tandem along an optical axis the optical power varies based on linear translation with respect to another.

A 3D printed GRIN device, the formulation and the method for making the GRIN device are disclosed. The GRIN (graded-index) device comprises i) a first phase comprising at least one polymer; ii) a second phase comprising at least one first component; and, optionally, iii) an interface between the first phase and the second phase, wherein the interface has a concentration gradient of the at least one first component, whereby the concentration of the at least one first component decreases with distance away from the second phase towards the first phase, wherein the at least one first component comprises at least one functional component, at least one functional precursor component, or combinations thereof, and wherein the GRIN device is a functional GRIN device, a functional precursor GRIN device, or a combination of a functional and functional precursor GRIN device.

A polarization scrambler using a retardance element (RE) is disclosed. The polarization scrambler may include an optical fiber input to transmit an optical signal, and a beam expander to receive and expand the optical signal to create an expanded optical signal. The polarization scrambler may include a retardance element (RE) to cause a polarization scrambling effect on the expanded optical signal and to create a scrambled expanded optical signal. The polarization scrambler may include a beam reducer to receive and reduce the scrambled expanded optical signal to create a scrambled optical signal. The polarization to scrambler may include an optical fiber output to receive scrambled optical signal. The optical fiber output may transmit the scrambled optical signal to one or more downstream optical components.

The systems, devices, and methods described herein relate to split GRIN lenses which may compartmentalize a single optical element into various zones of stacked film layers with geometrically coupled interfaces. The optical zones may include independent index of refraction values but may be connected through a nested GRIN contour geometry to allow for fabrication of all zones simultaneously.

A spectral imaging device comprises: an optical modifier system (SYS1) to form axial light beams (LB2) from received light beams (LB1), the axial light beams (LB2) being parallel with an optical axis (AX1) of the imaging device (500), a Fabry-Perot interferometer (FPI) to provide filtered axial light beams (LB3) by filtering light of the axial light beams (LB2), an image sensor (SEN1), and an array (ARR1) of lenses (LNS.sub.0,0, LNS.sub.0,1) to form a plurality of sub-images (S.sub.0,0, S.sub.0,1) on the image sensor (SEN1) by focusing light of the filtered light beams (LB3).

A head-mounted display optical module includes an optical lens group located at a light-emitting display side of the display panel and a protective layer located on an optical path between the display panel and the optical lens group. The protective layer includes at least one first protective layer. A refractive index of the first protective layer continuously changes therein at least along a radial direction that is located in a plane of the first protective layer and points from a center of the first protective layer to an edge of the first protective layer.

Systems, methods and devices are implemented for microscope imaging solutions. One embodiment of the present disclosure is directed toward an epifluorescence microscope. The microscope includes an image capture circuit including an array of optical sensor. An optical arrangement is configured to direct excitation light of less than about 1 mW to a target object in a field of view of that is at least 0.5 mm.sup.2 and to direct epi-fluorescence emission caused by the excitation light to the array of optical sensors. The optical arrangement and array of optical sensors are each sufficiently close to the target object to provide at least 2.5 μm resolution for an image of the field of view.

The invention provides an optical glass having excellent precision molding performance and having a refractive index of 1.46-1.53 and an Abbe number of 77-84. The optical glass comprises the following components based on cations in the molar percentage: P.sup.5+: 10-35%, Al.sup.3+: 10-35%, Ba.sup.2+: 1-20%, Sr.sup.2+: 10-35%, Ca.sup.2+: 1-20%, Gd.sup.3+: 0-10%, and Na.sup.+: 0-10%; the ratio of Sr.sup.2+/(Gd.sup.3++Na.sup.+) being 1-30; anions comprising F.sup.− and O.sup.2−, wherein the ratio F.sup.−/P.sup.5+ of F.sup.− content relative to the total molar percentage of anions to P.sup.5+ content relative to the total molar percentage of cations is 2.5 or more. The invention by rationally adjusting the proportions of the components, the molding performance of the optical glass is improved, and the problem that glass is broken and forms fogs during the molding process is solved, thereby the yield in manufacturing optical elements is improved.

Compound eyes of insects are great optical system for imaging and sensing by the nature creator, which is an unsurpassed challenge due to its precision and small size. Here, we use meta-lens consisting of GaN nano-antenna to open the fascinating doorway to full-color achromatic light field imaging and sensing. A 60×60 multi-channels meta-lens array is used for effectively capturing multi-dimensional optical information including image and depth. Based on this, the multi-dimensional light field imaging and sensing of a moving object is capable to be experimentally implemented. Our system presents a diffraction-limit resolution of 1.95 micrometer via observing the standard resolution test chart under white light illumination. This is the first mimic optical light field imaging and sensing system of insect compound eye, which has potential applications in micro robotic vision, non-men vehicle sensing, virtual and augmented reality, etc.

A light diffuser includes a main body and first fillers. The first fillers are dispersed in the main body. The first fillers include at least one of ZrO.sub.2, Nb.sub.2O.sub.5, Ta.sub.2O.sub.5, Si.sub.xN.sub.y, Si, Ge GaP, InP, and PbS, and a diameter of each of the first fillers is in a range from 0.1 μm to 1 μm.