Movement detector including a vertical resonator and receiver disposed within an open housing
AssigneeOsram Opto Semiconductors GmbH & Co. OHG
InventorJaime Estevez-Garcia
Life of this patent
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Abstract
A reflected light barrier has a housing with a base element. A semiconductor light emitter and a semiconductor light receiver are arranged on the base element in such a way that there is no free-standing partition between the light emitter and light receiver optically screening the light receiver from the light emitter. The light emitter has such a low beam divergence that the crosstalk from the light emitter to the light receiver is kept within operating tolerances.
Claims47
An apparatus for detecting movement of an object by reflecting radiation off of said object and detecting said reflected radiation, said apparatus comprising:
- a base housing having a top and a bottom;
- an opening formed in said top, said opening extending into said base towards said bottom, said opening defining a floor within said base housing;
- at least one transmitter for transmitting said radiation, said at least one transmitter is housed within said opening and includes a vertical resonator;
- at least one receiver for detecting said reflected radiation, said at least one receiver housed within said opening;
- and
- space between said transmitter and receiver, within said opening, is free from a radiation partition.
A method of forming an apparatus for detecting movement of an object by reflecting radiation off of said object and detecting said radiation comprising the steps of:
- forming a base having a top and a bottom;
- forming an opening within said top, said opening descending within said base towards said bottom;
- forming a radiation transmitter within said opening, said transmitter including a vertical resonator;
- forming a radiation receiver within said opening for detecting said reflected radiation;
- and
- forming a space between said receiver and transmitter within said opening without a radiation partition.
A method of forming an apparatus for detecting movement of an object by reflecting radiation off of said object and detecting said radiation, said method comprising the steps of:
- forming abase having a top and a bottom;
- forming an opening within said base, said opening descending within said base towards said bottom;
- forming a plurality of first electrical contacts within said opening;
- forming second electrical contacts in through holes through said base, individual second electrical contacts having a first connection to said first electrical contacts and a second connection outside said base;
- forming at least one radiation transmitter on a first electrical contact, said transmitter including a resonator;
- forming at least one radiation receiver on another first electrical contact;
- and
- forming space between said receiver and transmitter within said opening without a radiation partition.
Dependencies are inferred from the claim text.