Liquid crystal wide-angle fovea lenses
- researcher's name
As the imaging elements of cameras improve, the volume of video data information obtained is growing rapidly. In cameras for medical applications and surveillance in particular, “resolution” and “wide field of view” are important elements, but these are difficult to combine. If one wished to magnify a certain part, then the power consumption to move the direction of the lens, and increasing the camera size become bottlenecks.
We are currently working to develop liquid crystal wide-angle fovea lenses, by adapting elements using liquid crystal materials, whose refraction index can be controlled by an externally applied voltage, to enable changes in magnification and the position of the focus (single or multiple), while maintaining a 120 degree wide field of view. They are constructed from 1.5mm optical lenses (liquid crystal lens cells), and do not require mechanically moving parts.
●Endoscope camera: used to enlarge the affected area for operations, using a wide field of view to capture positional relationships. Suitable for inserting into the body due to the small size and lack of moving parts.
●Surveillance camera: record faces and other specific parts only in detail and can record with a reduction in overall information volume (see figure below).
●Cameras for microscopes, cell phones, etc.
●Due to the lack of mechanical moving parts, reductions in power and space are possible
●Because of development of simple element units, generality is high
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