Abstract:
An artificial muscle structure (7) having an electro-active polymer (EAP) layer(13) having a frusto-conical shape and whose tip has an opening (10) formed therein for use as a camera variable aperture. First, second and third electrode segments (14A - 14C) are formed on a rear face of the EAP layer (13). The second segment (14B) is positioned in a gap between the first and third segments (14A, 14C) so as to be electrically isolated from the first and third segments (14A - 14C). The second segment (14B) has an opening (10) formed therein that is aligned with the opening (10) in the EAP layer (13). A complementary electrode (16) is formed on a front face of the EAP layer (13).
Abstract:
An electrically activated lens filter (204) with an electro-optic portion (418) having a radially and circumferentially symmetric electric field gradient is disclosed. More particularly, embodiments of the lens filter (204) include an electro-optic portion (418) having one or more conductive plugs (512) arranged around a center region (514) such that an electric field within the electro-optic portion (418) varies from a maximum at an outer rim (408) to a minimum outside of the center region (514). The lens filter (204) may include a plurality of front electrodes (409) and rear electrodes (410) accessible in an axial direction for electrically activating front and rear transparent conductive layers (414, 416), respectively.
Abstract:
A sequence of digital images are produced using an imaging sensor circuit, wherein each of the digital images was a result of light capture by the imaging sensor circuit during a respective pixel integration phase followed by analog to digital conversion during a respective readout phase. A camera actuator is driven while producing the sequence of images, wherein during a part of every respective readout phase for the sequence of digital images the actuator is driven using a linear drive circuit, and wherein during a part of every respective pixel integration phase the actuator is driven using a switch mode drive circuit. Other embodiments are also described and claimed.
Abstract:
A driver circuit for electro-active polymer (EAP) device has a shared, voltage boost circuit that is coupled to drive a common terminal of first and second EAP devices to a given voltage. A first voltage boost circuit is coupled to drive a respective terminal of the first EAP device to an opposite polarity voltage, while a second voltage boost circuit is coupled to drive a respective terminal of the second EAP device to an opposite polarity voltage. Other embodiments are also described and claimed.
Abstract:
An image sensor assembly includes an image sensor die attached adjacent to a cavity and a lower surface in a preformed package having substantially vertical surfaces extending from the lower surface to an upper surface of the package. The image sensor die provides the light receiving surface for capturing the image. A light absorbing layer is applied to a cover such that the light absorbing layer prevents light from falling on the substantially vertical surfaces of the preformed package without preventing the passage of light that falls on the light receiving surface of the image sensor die. The light absorbing layer includes openings that provide a line-of-sight view of two opposing corners of at least one of the light receiving surface and the image sensor die to facilitate placing the cover over the upper surface of the package in registry with the image sensor die.
Abstract:
A sequence of digital images are produced using an imaging sensor circuit, wherein each of the digital images was a result of light capture by the imaging sensor circuit during a respective pixel integration phase followed by analog to digital conversion during a respective readout phase. A camera actuator is driven while producing the sequence of images, wherein during a part of every respective readout phase for the sequence of digital images the actuator is driven using a linear drive circuit, and wherein during a part of every respective pixel integration phase the actuator is driven using a switch mode drive circuit. Other embodiments are also described and claimed.