The platform incorporates two OmniVision OH02A CMOS image sensors with 1.4-micron pixel PureCel technology in a 1/6-inch optical format and an image signal processor (ISP) from OmniVision, plus a light control board for LED illumination and camera control unit from Lighthouse.
“Traditional endoscopy uses a single camera and does not provide depth information, thus increasing risks during endoscopic surgery,” said Tehzeeb Gunja, principal marketing manager at OmniVision.
“This partnership with Lighthouse Imaging provides an end-to-end, turnkey solution for stereoscopic 3D imaging in applications such as laparoscopy, gastro-intestinal (GI) and general endoscopic surgery. OmniVision’s high-image-quality, high-resolution image sensors, combined with Lighthouse’s system-level integration expertise, allows us to overcome the complexity, cost and size constraints that have limited the wide adoption of 3D endoscopy.”
The sensors support alternate-row high dynamic range (HDR) for high-quality imaging of both bright and dark areas. They are also stereo-ready, with FrameSync technology that enables accurate synchronization of the sensors. On-chip pulse width modulation enables the sensors to drive the LEDs at the endoscope’s distal tip, while antireflective coating on the cover glass removes ghosting. These sensors come in compact chip-scale packages (CSPs) with two-lane MIPI output, and have low power consumption for low heat at the distal tip.
The 2-megapixel, 1080p resolution of the OH02A image sensor supports streaming video at 60fps, allowing an entire medical team to view high-quality images on a large television monitor. Additionally, the Lighthouse platform can be easily adapted to use OmniVision sensors with 720p or 4K/2K resolution, depending on whether cost or resolution take priority for the medical OEM.
The OVMed ISP back-end processor provides stereo 3D vision. Its compact form factor fits inside the camera control unit (CCU) / video processor unit (VPU). Additionally, it supports an integrated design—including analog-to-digital converter, and dual-channel ISP and PC interface. An input interface is provided for dual OmniVision image sensors, and video is output via a dual-USB2.0 interface.
Medical designers can integrate this platform directly into a design to reduce costs and pave an easy path to 510(k) clearance. This system is also completely customizable by switching out image sensors, lenses or illumination to achieve the desired optical performance, or to optimize system-level architecture for a specific application.
Lighthouse Imaging – www.lighthouseoptics.com
OmniVision Technologies – www.ovt.com