US 9,418,269 B2Granted

Laser scanning indicia reading terminal having variable lens assembly

AssigneeHand Held Products, Inc.

InventorsWilliam H. Havens, Timothy Meier

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Abstract

There is described a laser scanning indicia reading terminal comprising a variable setting imaging lens having a first setting at which the terminal has a first plane of optimum focus and a second setting at which the terminal has a second plane of optimum focus. According to one embodiment a first predetermined scanning width can be associated to the first lens setting and a second scanning width can be associated to the second lens setting such that the terminal with the lens setting set to the first setting scans to a first width and with the lens setting set to a second setting scans to a second width. In addition to or in place of the scan width operational parameters different operational parameters can be associated to the respective first and second lens settings.

Claims30

Dependent claims

An indicia reading terminal, comprising:

a light source for emitting light;
a scanning apparatus for scanning the emitted light at a scan angle across a target;
a detector assembly for detecting reflected light and generating a scan signal for each scan;
a variable setting lens assembly having two or more lens settings for focusing the emitted light;
wherein the terminal is configured to execute each scan according to operational parameters, the operational parameters comprising the lens setting, the scan angle, an energization level for the light source, an amplification gain for amplifying the scan signal, and a bandwidth for processing the scan signal;
wherein the terminal is configured to execute one or more scans in accordance with a configuration selected from two or more configurations and a profile selected from two or more profiles;
wherein each configuration designates the lens setting for each of the one or more scans;
and
wherein each profile determines the operational parameters for a given scan based on the lens setting designated by the configuration setting for the given scan.

6 more elements

An indicia reading terminal, comprising:

a light source for emitting light;
a scanning apparatus for scanning the emitted light at a scan angle across a target;
a detector assembly for detecting reflected light and generating a scan signal for each scan;
a variable setting lens assembly having two or more lens settings for focusing the emitted light;
wherein the terminal is configured to execute each scan according to operational parameters, the operational parameters comprising the lens setting, the scan angle, an energization level for the light source, an amplification gain for amplifying the scan signal, and a bandwidth for processing the scan signal;
wherein the terminal is configured to execute one or more scans in accordance with a configuration selected from two or more configurations and a profile selected from two or more profiles;
wherein each configuration designates the lens setting for each of the one or more scans;
wherein each profile determines the operational parameters for a given scan based on the lens setting designated by the configuration setting for the given scan;
and
wherein at least one profile determines at least one operational parameter for a given scan based on the same operational parameter applied for a previous scan executed using the same lens setting at which the given scan is executed.

7 more elements

An indicia reading terminal, comprising:

a light source for emitting light;
a scanning apparatus for scanning the emitted light at a scan angle across a target;
a detector assembly for detecting reflected light and generating a scan signal for each scan;
a variable setting lens assembly having a first lens setting for focusing the emitted light in a first plane and a second lens setting for focusing the emitted light in a second plane;
wherein the terminal is configured to execute each scan according to operational parameters, the operational parameters comprising the lens setting, the scan angle, an energization level for the light source, an amplification gain for amplifying the scan signal, and a bandwidth for processing the scan signal;
wherein the terminal is configured to execute one or more scans in accordance with a configuration selected from two or more configurations and a profile selected from two or more profiles;
wherein each configuration designates the lens setting for each of the one or more scans;
wherein each profile determines the operational parameters for a given scan based on the lens setting designated by the configuration setting for the given scan;
wherein at least one configuration designates different lens settings for at least two of the one or more scans;
and
wherein at least one profile changes at least one operational parameter for a given scan based on the lens setting designated by the configuration setting for the given scan.

8 more elements

Dependencies are inferred from the claim text.