OPTICAL SYSTEM, AN ANALYSIS SYSTEM AND A MODULAR UNIT FOR AN ELECTRONIC PEN
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Accused Products
Abstract
A modular unit is designed for an electronic pen. The modular unit comprises a carrier with a receiver for a writing implement, a printed circuit board, a two-dimensional radiation sensor mounted on the printed circuit board, and an imaging unit which defines an image plane. The carrier, the printed circuit board, and the imaging unit are joined together with the imaging unit facing the radiation sensor to locate the image plane at the radiation sensor. A radiation source, such as an LED or a laser diode, may be arranged on the printed circuit board or mounted in a holder on the imaging unit. The imaging unit may be implemented as a boresight unit for controlling the spatial origin of radiation transmitted towards the radiation sensor. The boresight unit may comprise a radiation-transmitting channel, an imaging lens, and a redirecting mirror in the channel.
53 Citations
66 Claims
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1-50. -50. (canceled)
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51. An imaging unit for transmitting radiation from an object to a radiation sensor, said imaging unit being designed to control a spatial origin of radiation reaching the radiation sensor, said imaging unit comprising:
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a housing having an internal channel, a radiation entrance end, and a radiation exit end, wherein radiation is transmitted in the internal channel from the radiation entrance end of the housing to the radiation exit end of the housing; a lens mounted in the internal channel at said radiation entrance end of said housing; a mirror associated with said housing and configured to redirect radiation within the internal channel such that radiation transmitting through the internal channel is redirected towards the radiation exit end of the housing; and a holder for receiving a radiation source, said holder being associated with an outer part of the housing. - View Dependent Claims (52, 53, 54, 55, 56, 57, 58)
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59. An imaging unit for transmitting radiation from an object to a radiation sensor, said imaging unit being designed to control a spatial origin of radiation reaching the radiation sensor, said imaging unit including a solid body including a radiation path, said solid body comprising:
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a tubular part having a first end and a second end, and defining the radiation path between the first and second ends of the tubular part such that radiation is transmitted along the radiation path along a longitudinal axis of the tubular part; a radiation entrance connected to the first end of the tubular part and configured to receive radiation entering said radiation path, said radiation entrance including a lens element; a base of the solid body having a sensor pocket and a radiation exit; and the second end of the tubular part including a mirrored portion formed at an angle with respect to the longitudinal axis of the tubular part such that the mirrored portion is configured to redirect radiation, transmitted along the radiation path, towards the radiation exit. - View Dependent Claims (60, 61, 62, 63, 64, 65, 66)
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Specification