SWIRsensor

Unlike the basic lenses traditionally found in viewfinders, a Fresnel lens is crafted from optical plastics with concentric rings precisely carved into its surface. These lenses feature a large aperture and a short focal length. The engraved rings divide the lens into concentric sections, creating a series of surfaces with identical curvature, separated by discontinuities. This design causes light to bend differently depending on which part of the lens it passes through.

In virtual reality (VR), the real world is replaced by a new  3D digital environment. Augmented reality (AR) overlays digital content onto the real world, while mixed reality (MR) contains superimposed digital content that interacts to some degree with the real world. Optical products for AR/VR/MR are designed to minimize chromatic aberration and ensure a consistent exit pupil for clear visuals. They account for the characteristics of human eyes and often incorporate eye tracking technology to enhance user experience and maintain precise visual alignment.

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Optical elements are the cornerstone of immersive experiences delivered by VR and AR headsets. Our precision optics enable the seamless fusion of digital and physical worlds.

At Avantier, we produce high-quality Fresnel lenses through injection molding. By carefully managing spatial frequencies, we minimize stray light and optimize optical performance. We can collaborate with you to design the ideal lens for your specific application.

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A Fresnel lens is just one example of the critical optics we produce at Avantier for virtual reality. Our state-of-the-art factory and innovative design team enable us to manufacture a wide range of AR/VR/MR optics, including AR/MR micro-displays and VR micro-displays. Whether you need freeform optics, lenses, prisms, beamsplitters, or mirrors, we have the capability to produce what you need for your application.

In VR optics, Fresnel lenses are commonly used, particularly in higher-end models. These lenses are essential for achieving a lightweight head-mounted display, where minimizing eye-position-dependent distortion is crucial. Such distortions can lead to motion sickness, making their elimination a top priority for enhancing user experience.

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Avantier Inc. is a premier producer of optics for AR/VR/MR: augmented reality, virtual reality and mixed reality. The global market for AR, VR, and MR optics and displays is rapidly growing, with optical design and manufacturing playing a crucial role in its success.

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VIETNAM:Alpha Industrial Park, Tu ThonVillage, Yen My District, HungYen Province 17721+84 221-730-8668sales-vn@avantierinc.com

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When using AR, VR, or MR, a viewer perceives the real world through specialized optics that enhance or alter their experience. If these optics cause issues such as God Rays, the Rainbow Effect, or vergence-accommodation conflicts, the user experience will suffer, potentially discouraging users from engaging with virtual reality. Additionally, a heavy, bulky headset can detract from the VR experience. However, advances in optical metrology are enabling the design of imaging systems that effectively mitigate these issues.

The pixel architecture used to acquire data over this large range of scene intensities is unique to Goodrich SWIR cameras. The focal plane array (FPA), or lightsensing chip, is composed of an InGaAs chip bumpbonded to a silicon read-out integrated circuit (ROIC) that has the ability to continuously change the in-pixel analog gain without the limitations of the fixed integration capacitors found in capacitive transimpedance amplifier (CTIA) ROICs used by other camera manufacturers. Commonly, CTIA pixel architecture is limited to two capacitors, and therefore only two different gain settings due to pixel size constraints.

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While the roles of telecommunications, computer coding, and graphics design in AR, VR, and MR are well recognized, it is the optics that truly lie at the heart of successful spatial reality experiences. The quality of these optics can make or break AR/VR/MR devices.

Whatever your display type, we are ready to partner with you, providing the optical design and components required to give your viewers an optimal experience. Let us help you break boundaries and lead the way into the future. Contact us for a tailored quote and discover how our optical solutions can elevate your AR/VR/MR device.

Advances have been made in short wave infrared (SWIR) imaging technology to address the most demanding imaging and surveillance applications. Multiple techniques have been developed and deployed in Goodrich’s SWIR indium gallium arsenide (InGaAs) cameras to increase the dynamic range performance of standard, commercial off-theshelf (COTS) products. New developments have been implemented on multiple levels to give these cameras the unique ability to automatically compensate for changes in light levels of up to five orders of magnitude, while improving intra-scenic dynamic range through raw data acquisition techniques, and a proprietary, patent-pending, image-enhancement algorithm.

The gate-modulated (GMOD) pixel architecture ROIC can change the sensitivity of the focal plane array by modifying internal biases, resulting in a change in effective capacitance. The flexibility of an infinitely variable capacitance results in an infinitely variable full well capacity for the GMOD ROIC. This allows the camera to adjust its sensitivity and full well capacity to compensate for large changes in scene intensity without the integration capacitor limitations of a CTIA ROIC.