Oct 21

K-Lens: Interchangeable Light Field Lens based on Mirrors (incl. Patent)

K-Lens: Interchangeable Light Field Lens based on Mirrors (Photo: Youtube Screenshot) German Startup K-Lens recently received the the Photokina Startup Award 2018 for developing a new type of light field lens for “any camera”. The product, also named K-Lens, is essentially a lens that will allow interchangeable-lens cameras to record light field images, enabling single-lens, single-exposure 3D photography and film, as well as other light field features such as software refocus or variable depth-of-field.

While the lens is still in development, the company promises a full-frame-optimized product that will be around < 25 cm long and weigh less than 1 kg, and be "compatible with all current digital cameras and lens mounts". Continue reading

Jul 17

New Apple Patent: Light Field Cameras for more Immersive Video Calls with Augmented Reality

Apple’s latest light field patent describes the use of a camera array for immersive augmented reality (AR), live display walls, head mounted displays, video conferencing, and similar applications based on a user’s point of view. The patent application, simply titled “Light field capture”, talks about AR video conferencing where the user’s background can be replaced with other information (e.g. their own view of a scene, or live sports).

New Apple Patent: Light Field Cameras for more Immersive Video Calls and Augmented Reality (Picture: Motta et al. 2016)

The invention also includes concepts including pixel culling (i.e. following the user’s movements and cropping to the interesting parts of the entire camera view), conversion of 3D data to 2D views for the left and right eyes of the second party,
Interestingly, the authors also mention the possibility for a hybrid display/camera-array that would integrate both devices into a single, light-field sensing screen.

New Apple Patent: Light Field Cameras for more Immersive Video Calls and Augmented Reality (Picture: Motta et al. 2016)

For more information, check out Patently Apple and Patent US9681096 – Light field capture on Google Patents.

Jun 25

Patent: Integrated Light Field Sensor on a Chip

Patent: Integrated Light Field Sensor on a Chip (Figure by Kim 2017, modified by www.lightfield-forum.com) Current light field sensors typically consist of an imaging sensor and a separate microlens array, both of which are assembled into an optical system. While this allows the use of common CCD- or CMOS sensors, it may also introduce some issues where extreme precision is needed for optimal imaging conditions, e.g. with microlenses of micrometer-range focal lengths. A mismatch of these separately fabricated elements can affect image quality.
A new patent application by Jong Eun Kim at SK hynix (Korea) aims to solve these potential issues: The patent application details a novel light field imaging device where the microlens array is formed on top of the imaging sensor. Continue reading

Apr 22

Light Field Lab: Startup is Working on Glasses-Free Holographic TV Sets

Light Field Lab: Startup is Working on Glasses-Free Holographic TV Sets using Light FIeld Tech (picture: Light Field Lab) At this week’s National Association of Broadcasters (NAB) show in Las Vegas, a startup named Light Field Lab has announced they’re developing the next big thing in display technology: glasses-free holographic TVs.
Founded by former Lytro specialists Jon Karafin (former Head of Light Field Video at Lytro), Brendan Bevensee (former Lead Engineer at Lytro) and Ed Ibe (former Lead Hardware Engineer at Lytro), the company is working on the “next generation of light field display technologies”. Continue reading

Apr 16

Lytro Immerge becomes Bigger and Better

Lytro Immerge becomes Bigger and Better (photo: Road to VR) Back in August 2016, Lytro unveiled its first Virtual Reality experience, “Moon” (see below), to show off the capabilities of Immerge, the company’s groundbreaking, high-end production camera that records light fields for virtual reality. While it was reportedly an impressive experience for the VR viewer, it also had its limitations (especially with moving objects in the recorded scene).
Now, Ben Lang from RoadToVR talks about a recent visit to Lytro, where he saw the new and improved Immerge prototype. Continue reading