CAMERA & IMAGING SYSTEMS
eVision has designed and tested several new-generation liquid crystal electro-optic lenses for use in the digital photography industry. Our goal is to replace conventional lens modules in camera systems with modules utilizing our proprietary electro-optic and fluidic lens designs.
Whether a cell phone camera, webcam, or a point-and-shoot camera, our systems have the potential to reduce the size, weight, and power requirements for these applications, and eliminate the drive motors that are required by today’s conventional lens modules. The major workhorse for our electro-optic modules are variable-focus parabolic lenses.
The lenses change optical power by the application of a varying array of voltages (typically less than 10 volts), and require microwatts of power to drive them. The lens designs for our auto-focus modules can be tailored for cell phone, web cam and point-and-shoot applications. With our most current lens generation, our cell phone camera module is capable of continuous focusing from infinity to less than 10 cm, with an aperture of 2.7 mm. If a larger aperture is desired for greater image resolution, a 5 mm diameter module can focus from infinity to less than 15 cm with an electro-optic lens about 1 mm thick.
The conventional lens on top requires a drive motor to focus the lens on the object. Our lens accomplishes the same task with no moving parts – just by changing the optical power
See our Video of this lens with a click of the button on the side bar.
The Company is also developing motionless zoom systems for both cell phone and digital cameras. Using pairs of electro-optic lenses and operating one as a plus lens and the other as a minus lens, we can achieve image magnification; when coupled with our auto-focus system, zoom capability has been demonstrated without the movement of any of the lenses.
Imaging and Beam-Steering for Security and Military Applications
Another area of development for eVision Optics is small imaging systems for security and military applications, such as
night vision goggles. These systems will be capable of imaging in both visible and infrared light. The advantages of thin, lightweight, small form-factor electro-optical components for these miniature platforms can greatly improve performance. Also, due to the low power consumption of electro-optics, these vehicles are able stay aloft longer; and the elimination of the motors to move the optics will increase reliability and survivability.
In addition, with beam-steering devices made from liquid crystal electro-optics, we are able to perform large-angle scanning without moving the focal plane array and achieve image stabilization with small-angle steerers.
Beam-Steering for the Gamers
And, with our ability to perform focusing, magnification, image stabilization, and beam steering (pan and tilt) with no moving optical components, we believe there are multiple opportunities for liquid crystal electro-optic lenses to improve the performance and capabilities of computer gaming.