Optical Display Devices Research Articles

Vignetting Compensation Method for CMOS Camera Based on LED Spatial Array

To solve the problem of pixel light intensity information distortion caused by camera vignetting in optical devices such as CMOS or CCD cameras, existing studies mainly focus on small spatial light fields and point light sources and adopt an integrating sphere and function model for vignetting correction, but it is not suitable for large LED optical composite display devices. Under this background, this paper innovatively proposes a camera vigneting compensation method based on an LED spatial array, independently develops a two-dimensional translation device driven by a high-precision guide rail, uses spatial array technology to obtain the brightness distribution of the corrected display screen to quantify its camera vigneting distortion characteristics, and adopts systematic mathematical operations and iterative compensation strategies. Industry standard tests show that the brightness uniformity of the display has been improved by 5.06%. The above research results have been applied to mass production and industrialization.

Downshifting photoluminescence of Erbium doped NaSrZrO3 for solid-state lighting

The synthesis of novel nanophosphors exhibiting unique morphologies with high purity, stability, eco-friendliness, and a high color rendering index is crucial to meet the demands of contemporary solid-state lighting energy devices. In this investigation, we successfully synthesized Na0.2Sr0.9-xZrO3:xEr3+ perovskite nanophosphors. All samples manifested an orthorhombic structure. The crystallite size was observed to increase with rising concentrations of Er3+. The optical band gap exhibited a range of 5.19 eV to 5.36 eV with increments in doping concentration, signifying alterations in the lattice constants attributable to crystalline disorder. The downshifting PL spectra revealed both host emission bands and dopant (Er3+) emission lines. The violet – blue band was attributed to crystalline disorder while the red emission band was assigned to octahedra tilting disorder in the perovskite. The presence of Er3+ ion lines at 523 and 546 nm produced intense green light, as depicted in the CIE chromaticity diagram for all doped samples. The study affirms that the phosphors synthesized in this research possess potential for application in the development of visible green lamps for optical display devices and solid-state lighting.

Trajectory-based alignment for optical see-through HMD calibration

AbstractIn order to align the virtual and real content precisely through augmented reality devices, especially in optical see-through head-mounted displays (OST-HMD), it is necessary to calibrate the device before using it. However, most existing methods estimated the parameters via 3D-2D correspondences based on the 2D alignment, which is cumbersome, time-consuming, theoretically complex, and results in insufficient robustness. To alleviate this issue, in this paper, we propose an efficient and simple calibration method based on the principle of directly calculating the projection transformation between virtual space and the real world via 3D-3D alignment. The proposed method merely needs to record the motion trajectory of the cube-marker in the real and virtual world, and then calculate the transformation matrix between the virtual space and the real world by aligning the two trajectories in the observed view. There are two advantages associated with the proposed method. First, the operation is simple. Theoretically, the user only needs to perform four alignment operations for calibration without changing the rotation variation. Second, the trajectory can be easily distributed throughout the entire observation view, resulting in more robust calibration results. To validate the effectiveness of the proposed method, we conducted extensive experiments on our self-built optical see-through head-mounted display (OST-HMD) device. The experimental results show that the proposed method can achieve better calibration results than other calibration methods.

Preparation and improved luminescent properties of Tb3+/Yb3+ co-doped Na2O–CaO–SiO2–Al2O3–ZnO–CaF2 transparent glass-ceramics

Transparent glass-ceramics containing CaF2 single-phase or CaF2/Ca5(PO4)3F two-phase were obtained by heat-treating the precursor glass. Compared with the precursor glass, the glass-ceramics containing CaF2 crystal with low phonon energy greatly enhance the emission intensity. Further research was conducted on the influence of various crystallization procedures on the luminescent properties of the glass-ceramic, and the procedure crystallized at 660 °C for 4 h was determined to be the optimal heat treatment. The SEM results indicate that the crystal size of the glass-ceramics is in the nanometer scale, which guarantees the possibility of its optical application. The three-photon absorption process of the Tb3+/Yb3+ co-doped glass-ceramics containing CaF2 single-phase was confirmed based on the up-conversion emission spectra excited at different power of 980 nm laser. The chromaticity coordinates of the Tb3+/Yb3+ co-doped glass-ceramic are located in the green region, indicating its potential applications in green lighting and other optical display devices.

Investigation of europium oxide (Eu2O3) doped in cobalt boro-silicate glasses from waste glass for photonics material application

The boro-silicate glasses have been doped with different concentration of Eu2O3 keeping constant CoO concentration (0.02 mol%) and synthesized in melt quench technique, these glasses are characterized through physical parameters, optical absorption, photo, and X-ray luminescence spectroscopy. The results showed that the optical characteristics of the samples are dependent on the Eu2O3 content rather than CoO content inside the glass. We observe tetrahedral dominance of Co2+ in the present glass system. The absorption spectra showed the three broad band of Co2+ ion at 4T1 g(F) → 2T1 g, 4A2 (4F) → 1T1 (4P), and 5T2 g → 5Eg respectively. Using optical absorption spectra, the crystal field parameter (10Dq), Racah parameter (B) were evaluated for all the concentration of Eu3+ doped glass. The phonon side band spectrum shows 1067.98 cm−1 for the present glass system. The integral scintillating efficiency have been studied and exhibited that the value show 8.78 % compared with commercial BGO scintillating crystal. Judd-Ofelt intensity parameters were investigated and used to compute the radiative properties of present glasses. These studies are useful for optimizing glass composition and could be useful for the optical display devices.

Red emission material from Eu3+ ion doped in oxy-fluoroborate glass system

The aim of the work is to prepare (51-x)B2O3 + 23CaF2 + 10Li2O + 10Na2O + 6BaO + xEu2O3 glasses with various concentration, analyse the optical/radiative properties and compare with other reported literature. In this work, the Judd-Ofelt analysis was employed to evaluate oscillator strength, JO parameters. Using JO parameters, radiative properties of the prepared samples were evaluated to understand their branching ratios, stimulated emission cross-section and radiative lifetime. The phonon coupling constant was evaluated using phonon sideband and compared with other literatures. The present glasses doped with Eu3+ ions find a potential use in orange red light emitting optical display device applications.

Multifunctional Fluorescent Main-Chain Charged Polyelectrolytes Synthesized by Cascade C-H Activation/Annulation Polymerizations.

Fluorescent polyelectrolytes have attracted enormous attention as functional polymer materials. In contrast with the widely studied conjugated polyelectrolytes with ionic groups in side chains, fluorescent main-chain charged polyelectrolytes (MCCPs) have rarely been explored due to the large synthetic difficulty. Herein, we develop a facile and atom-economical N-heterocyclic carbene-directed cascade C-H activation/annulation polymerization strategy that can transform readily available imidazolium substrates and internal diynes into multifunctional fluorescent MCCPs with complex structures and high molecular weights (absolute Mn up to 135 600) in nearly quantitative yields. The presence of multisubstituted polycyclic N-heteroaromatic cations in polymer backbones endow the obtained MCCPs with excellent solution processability, high thermal stability, and dual-state efficient fluorescence in both solution and aggregate states. Benefiting from the strong electron-withdrawing capability of the cationic heterocycles in main chains, multicolored aggregate-state fluorescence can be readily achieved by modifying the substituents around the cationic ring-fused core. Taking advantage of the good photosensitivity of the fluorescent MCCP thin films, multiscale and high-resolution fluorescent photopatterns with different colors can be facilely prepared with potential applications in optical display devices and anticounterfeiting systems. Moreover, the strong electrostatic interactions of these cationic MCCPs with anionic polyelectrolytes enable them to form multicolored fluorescent interfacial polyelectrolyte complexation microfibers with directly visualized internal structures. Such flexible microfibers can be further made into diversified forms of fiber-based macroscopic patterns or painting.

Role of dopants to mend morphology and emission in CdO powder

Cadmium Oxide (CdO) is the widely acceptable transparent conducting oxide from the II-VI series of elements. In the fast-growing field of nanoscience & technology, researchers have focused on processing, and manufacturing II-VI oxide semiconductors simply by tailoring the size and morphology near to Bohr-exciton radius. To perform the presented experimental work, a few metal ions like copper (Cu), manganese (Mn), and their binary combination are used as efficient dopants. The precursors of cadmium and dopants were synthesized with an efficient co-precipitation method at nanoscale dimensions. In the undoped sample, no specific shape of crystallites has been observed in respective SEM micrographs while planer plates appeared in Cu doped sample, rod shape particles in Mn-doped, and almost spherical particles are found in Cu-Mn doped sample. Energy dispersive X-ray spectroscopy (EDS) of individual nanostructures has emphasized the appropriate stoichiometry of elements which further confirms the presence of each doping element. The luminescent spectra were accomplished at 350 nm excitation wavelength. The emission in the undoped sample depicts the strong violet-blue bands at 410 and 463 nm which shift toward a higher wavelength in the doped sample. The color coordinates of each sample in the corresponding range of white spectra are exhibited by CIE chromaticity graphs. The constituent emitting wavelengths originated possibly from excitonic, near band edge, deep trap states, and structural defects along with the characteristic dopant’s transition. It is suggested that the emission has been significantly tailored within the whole visible range by varying doping elements of different ionic radii. The obtained results endorse the tremendous potential of doped CdO powder in optical display devices.

The Design and Implementation of the Lookup Table in Distortion Correction for the Optical System

Image geometric distortion is common in a large field of view optical system. It becomes a technical difficulty for high distortion rate optical systems and high resolution image geometric distortion correction. But, a crucial step in distortion correction is figuring out how to precisely obtain the index coordinates and correction parameters, otherwise known as the lookup table. In this paper, the problems in the traditional lookup table method are analyzed, and an improved lookup table method is proposed. The method is based on the traditional lookup table method with the addition of removing the wrong data of position coordinates in the correction image feature points, calculating the ideal image feature point position coordinates, handling the index coordinate out-of-bounds, and adjusting the output order of index coordinates and correction parameters. The experimental results show that the improved design method is feasible, and improves the accuracy of the correction image, compared with the traditional lookup table, the root mean square error is reduced by 93%, and the average accuracy of the fitted position over the full field of view is reduced by 51.9%, and the maximum deviation is only 0.2917%. For the correction of the large field of view optical display devices, it offers good correction effects.

A comprehensive DFT evaluation of catalytic and optoelectronic properties of BaTiO3 polymorphs

BaTiO3 exhibits promising photocatalytic characteristics and has the potential to be employed in photocatalytic water splitting and pollutant degradation. Herein, we have investigated the structural, electronic, and optical properties of BaTiO3 in the framework of density functional theory (DFT). The obtained results are found to be consistent with theoretical results. However, using hybrid HSE06 functional, the calculated bandgap values are 3.254, 3.894, 3.694, 3.519, and 3.388 eV corresponding to cubic, rhombohedral, orthorhombic, tetragonal, and hexagonal phase of BaTiO3 polymorphs. This is the first time a DFT calculation touched over the experimental bandgap values of BaTiO3 polymorphs.Electronic band structure analysis revealed that all the BaTiO3 polymorphs exhibit semiconducting character with indirect bandgap except hexagonal structure which possesses direct bandgap. The density of states (DOS), Mulliken bond analysis and charge density distribution indicates considerable hybridization between O-2p and Ti-3d states caused to the formation of upper valence band (VB) and lower conduction band (CB). The wide bandgap and suitable redox potential of BaTiO3 polymorphs will be effective for water splitting as well as breakdown organic contaminants under UV–vis irradiation. The lower electron effective mass of the polymorphs indicates higher electrical conductivity. The energy dependent optical parameters show close agreement with the underlying electronic band structure. The high absorptivity, lower reflectivity and optical anisotropy (orthorhombic and tetragonal) of the polymorphs suggested that these could be a potential candidate for UV based optical device applications as well as to design wave guides, dielectric condensers and optical display devices.

Extended Reality-Assisted Surgery as a Surgical Training Tool: Pilot Study Presenting First HoloLens-Assisted Complex Penile Revision Surgery

Extended reality-assisted urologic surgery (XRAS) is a novel technology that superimposes a computer-generated image on the physician's field to integrate common elements of the surgical process in more advanced detail. An extended reality (XR) interface is generated using optical head-mounted display (OHMD) devices. To present the first case of HoloLens-assisted complex penile revision surgery. We describe our pilot study of HoloLens-assisted penile revision surgery and present a thorough review of the literature regarding XRAS technology and innovative OHMD devices. The ability of XRAS technology to superimpose a computer-generated image of the patient and integrate common elements of the surgical planning process with long-distance experts. XRAS is a feasible technology for application in complex penile surgical planning processes. XRAS and OHMD devices are novel technologies applicable to urological surgical training and planning. Evidence suggests that the potential use of OHMD devices is safe and beneficial for surgeons. We intend to pioneer HoloLens technology in the surgical planning process of a malfunctioning penile implant due to herniation of the cylinder. This novel technology has not been used in prosthetic surgery, and current data about XRAS are limited. OHMD devices are effective in the operative setting. Herein, we successfully demonstrated the integration of Microsoft HoloLens 2 into a penile surgical planning process for the first time. Further development and studies for this technology are necessary to better characterize the XRAS as a training and surgical planning tool. Quesada-Olarte J, Carrion RE, Fernandez-Crespo R, et al. Extended Reality-Assisted Surgery as a Surgical Training Tool: Pilot Study Presenting First HoloLens-Assisted Complex Penile Revision Surgery. J Sex Med 2022;19:1580-1586.

Visual stimulus color effect on SSVEP-BCI in augmented reality

Augmented-reality-based steady-state visual evoked potential (AR-SSVEP) has improved the flexibility and portability of the brain–computer interface (BCI) system. However, in AR-SSVEP, the visual stimuli are displayed in the real world. It remains to be seen whether the color of visual stimuli has the same effect on AR-SSVEP as on computer screen-based steady-state visual evoked potential (PC-SSVEP). To explore the impact of stimulus color on the classification accuracy of augmented-reality-based brain–computer interface (AR-BCI), we designed stimulus interfaces with four colors (white, red, green, and blue). A PC and optical see-through head-mounted display (OST-HMD) device (HoloLens) displayed a similar layout. Experimental results showed that the effect of visual stimulus color on classification in AR-SSVEP and PC-SSVEP was inconsistent. In AR-SSVEP, green visual stimuli performed better when the stimulation duration was less than 1.5 s, while red and white visual stimuli were preferred when the stimulation duration was more than 1.5 s. In PC-SSVEP, red visual stimuli obtained the highest information transmission rate (ITR). Blue was the worst in both types of SSVEP-BCI. The results of this study can guide the color selection of visual stimuli in AR-SSVEP.

Spectral studies of Dy3+:zincphosphate glasses for white light source emission applications: A comparative study

Recently, much efforts have been focused on Dy3+-doped glasses due to their optical and luminescent properties for several applications such as display devices, white light emitting diodes, waveguides for optical telecommunication, etc. In the present study, the Dy3+-doped zinc phosphate (Dy3+:PZKAN (P2O5+ZnO+K2O+Al2O3+Na2O+Dy2O3)) glasses have been prepared by melt quenching technique and characterized through absorption (optical band gap, Urbach energies and Judd-Ofelt (JO) theory), photoluminescence (yellow (Y) to blue (B) luminescence intensity ratios (Y/B) and CIE color coordinates), decay time and quantum yield measurements. With the help of optical absorption, transition intensities and the well proposed JO theory, three phenomenological JO fitted parameters were estimated and in turn adopted to evaluate the required radiative parameters for specific excited luminescent levels of Dy3+ ion. The luminescence transitions exhibit de-excitation (refers radiative-emission) levels in the optical region of 450-750 nm. Also while increasing Dy3+ ion content, the de-excitation intensities were quenched due to presence of higher content of Dy3+ ions. The fluorescence decay curve for all the glass samples have been recorded with 350 nm pumping and observed the de-excitation at 575 nm that belongs to the 4F9/2 → 6H13/2 level. The CIE color coordinates were estimated with the help of CIE chromaticity diagram and the quantities were in close proximity of the optimised white light (towards yellow) region for all the glasses. The lifetime (952 μs to 358 μs) and quantum yield (67 to 11) values decreases with increasing concentration (Dy3+:0.05 mol % to 3.0 mol %). The present results have been compared and discussed with those of 72 reported Dy3+:glasses besides uniform labeling of glass compositions. From these results, it is concluded that the Dy3+:PZKAN glasses could also be useful for optical display devices and yellow laser applications.

Structural characterization, Gd3+ → Eu3+ energy transfer and radiative properties of Gd/Eu in codoped Li2O–ZnO–SrO–B2O3–P2O5 glass

A series of Gd doped Li2O–ZnO–SrO–B2O3–P2O5 glasses and co-doped samples with different Eu3+ concentrations was synthesized through the conventional melt quenching route. The structural, morphological, and elemental distributions were investigated by X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, and energy dispersive X-ray analysis. The effect of Gd doping on the thermal properties of prepared glasses was studied by differential thermal analysis. Characteristics photoluminescence (PL) emissions of Gd3+ (6P7/2→8SJ/2) and Eu3+ (5D0→7FJ) were observed in the doped glass matrix. Strong PL emissions at 312 nm (6P7/2 → 8S7/2) shown by the Gd-doped glasses upon excitation at 274 nm suggests its prospect in phototherapy applications. Phonon energy of the glass matrix calculated from the phonon sidebands of Eu3+ spectra was obtained as 970 cm−1. The values of branching ratios and stimulated emission cross-sections obtained from Judd-Ofelt analysis indicate the suitability of the prepared Gd–Eu co-doped glasses for optical display devices. The Observed Ω2 > Ω4 suggests Eu3+ occupancy preferably at less centrosymmetric sites in the studied glass hosts. The change in the local symmetry environment of the dopant ions with Gd incorporation was further analyzed by determining the asymmetry ratio of Eu3+ emission in the co-doped glass. The emission spectra and luminescence lifetimes suggested the efficient energy transfer from Gd3+ to Eu3+. Co-doping of Gd led to better chromaticity values and improved color purity of Eu3+ red emission.

Holographic techniques for augmented reality and virtual reality near-eye displays

Near-eye displays are the main platform devices for many augmented reality (AR) and virtual reality (VR) applications. As a wearable device, a near-eye display should have a compact form factor and be lightweight. Furthermore, a large field of view and sufficient eyebox are crucial for immersive viewing conditions. Natural three-dimensional (3D) image presentation with proper focus cues is another requirement that enables a comfortable viewing experience and natural user interaction. Finally, in the case of AR, the device should allow for an optical see-through view of the real world. Conventional bulk optics and two-dimensional display panels exhibit clear limitations when implementing these requirements. Holographic techniques have been applied to near-eye displays in various aspects to overcome the limitations of conventional optics. The wavefront reconstruction capability of holographic techniques has been extensively exploited to develop optical see-through 3D holographic near-eye displays of glass-like form factors. In this article, the application of holographic techniques to AR and VR near-eye displays is reviewed. Various applications are introduced, such as static holographic optical components and dynamic holographic display devices. Current issues and recent progress are also reviewed, providing a comprehensive overview of holographic techniques that are applied to AR and VR near-eye displays.

A CNN-based multi-target fast classification method for AR-SSVEP

Because an augmented-reality-based brain-computer interface (AR-BCI) is easily disturbed by external factors, the traditional electroencephalograph (EEG) classification algorithms fail to meet the real-time processing requirements with a large number of stimulus targets or in a real environment. We propose a multi-target fast classification method for augmented-reality-based steady-state visual evoked potential (AR-SSVEP), using a convolutional neural network (CNN). To explore the availability and accuracy of high-efficiency multi-target classification methods in AR-SSVEP with a short stimulation duration, a similar stimulus layout was used for a computer screen (PC) and an optical see-through head-mounted display (OST-HMD) device (HoloLens). The experiment included nine flicker stimuli of different frequencies, and a multi-target fast classification method based on a CNN was constructed to complete nine classification tasks, for which the average accuracy of AR-BCI in our CNN model at 0.5- and 1-s stimulus duration was 67.93% and 80.83%, respectively. These results verified the efficacy of the proposed model for processing multi-target classification in AR-BCI.

Metalens Eyepiece for 3D Holographic Near-Eye Display.

Near-eye display (NED) systems for virtual reality (VR) and augmented reality (AR) have been rapidly developing; however, the widespread use of VR/AR devices is hindered by the bulky refractive and diffractive elements in the complicated optical system as well as the visual discomfort caused by excessive binocular parallax and accommodation-convergence conflict. To address these problems, an NED system combining a 5 mm diameter metalens eyepiece and a three-dimensional (3D), computer-generated holography (CGH) based on Fresnel diffraction is proposed in this paper. Metalenses have been extensively studied for their extraordinary capabilities at wavefront shaping at a subwavelength scale, their ultrathin compactness, and their significant advantages over conventional lenses. Thus, the introduction of the metalens eyepiece is likely to reduce the issue of bulkiness in NED systems. Furthermore, CGH has typically been regarded as the optimum solution for 3D displays to overcome limitations of binocular systems, since it can restore the whole light field of the target 3D scene. Experiments are carried out for this design, where a 5 mm diameter metalens eyepiece composed of silicon nitride anisotropic nanofins is fabricated with diffraction efficiency and field of view for a 532 nm incidence of 15.7% and 31°, respectively. Furthermore, a novel partitioned Fresnel diffraction and resample method is applied to simulate the wave propagations needed to produce the hologram, with the metalens capable of transforming the reconstructed 3D image into a virtual image for the NED. Our work combining metalens and CGH may pave the way for portable optical display devices in the future.

Facile combustion fabrication and optical investigation of novel Er3+-activated BaSrY4O8 green emitter for solid state lighting applications

A simple, non-hazardous and cost effective, solution combustion fabrication route was adopted to prepare novel BaSrY4(1−x)Er4xO8 (x = 0.5−5 mol%) nanocrystals. Investigations related to crystal structure and phase purity of the prepared nanophosphors were made by using X-Ray Diffraction (XRD) based Rietveld refinement analysis technique. Crystallite size of the prepared nanocrystals was analyzed from Transmission Electron Microscopy (TEM) technique and the morphological examinations were done with the help of Scanning Electron Microscopy (SEM) measurements. Optical properties of the fabricated nanophosphors were analyzed from photoluminescence (PL) excitation-emission spectra. By fixing excitation at 379 nm, the emission spectra depicted peak at 549 nm (most intense) corresponding to 4S3/2 → 4I15/2 transition. The optimum content of Er3+ in BaSrY4O8 matrix was determined as x = 0.02. Further, the DR (diffuse reflectance) analysis revealed the band gap (Egap) values for host BaSrY4O8 (5.79 eV) and doped BaSrY3.92Er0.08O8 (5.38 eV) powder samples. CIE (Commission International de I′Eclairage) color coordinates were found to be in green region which proclaims the potential use of combustion fabricated nanophosphors in optical display devices, mainly white LEDs, lasers and optical sensors.

Dual Fresnel mirror system for 360 degree viewable three-dimensional displays

360-degree viewable three-dimensional (3D) display systems have gained considerable attention for the unique manner in which they display objects. Most of the optical display devices in these systems employ two parabolic mirrors facing each other separated by a distance equal to the focal length of the mirrors. However, the current configuration is limited to unity magnification and provides a small image relative to the volume of the system. This paper presents a novel 3D display system based on two Fresnel mirrors with different focal lengths facing each other. The distance between the mirrors can be adjusted to alter the magnification of the resulting 3D image. Wave-optics analysis of an optical dual-lens system equivalent to the proposed dual-mirror system was used to simulate the image distance, the transverse and longitudinal magnification, and the minimum length of the proposed system. This paper also addresses issues pertaining to the design and manufacture of Fresnel mirrors. An experiment system using Fresnel mirrors with focal lengths of 60mm and 90mm clearly demonstrated the efficacy of the proposed scheme in terms of 3D image magnification.

Spectral characteristics of Pr3+-doped lead based phosphate glasses for optical display device applications

The present work concentrates on spectral analysis of Pr3+:lead phosphate (PPbKANPr) glasses for visible lasers and optical amplifier applications and these glasses were prepared by a melt-cast technique. Vibrational modes of PPbKANPr glasses have been analyzed through FTIR and Raman techniques. Based on the absorption spectrum and the renowned Judd-Ofelt (JO) formalism, the three JO parameters (Ω2,4,6) were calculated and then used to estimate the various radiative probabilities for characteristic excited fluorescent states of Pr3+. The derived JO parameters ( × 10−20 cm2) were found to be Ω2 = 1.51, Ω4 = 18.03 and Ω6 = 19.81. The luminescence spectra exhibit emission bands in the visible region of 480–780 nm and with the increase of Pr3+ ion concentration, the emission intensities were decreased due to concentration quenching. The decay curves of the PPbKANPr glasses were measured with the 443 nm excitation, monitoring via the luminescence peak at 610 nm. The decay rates reveal bi-exponential trend with shortening of lifetimes with increasing of Pr3+ ion concentration. Near infrared luminescence properties were obtained with the excitation of Ar+ ion laser line (488 nm) and the spectrum consists of three emission bands covering from 800 nm to 1600 nm. The investigation of the results proved that the current PPbKANPr glasses are useful for visible lasers and optical amplifiers.