# US 10,769,394 B2 · Devices systems and methods for alignment of lens assemblies within a chassis

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- Number: US 10,769,394 B2
- Document ID: US10769394B2
- Status: Granted
- Kind: B2
- Application number: 15/928,206
- Filed: 2018-03-22
- Published: 2019-09-26
- Granted: 2020-09-08
- Earliest claimed: 2018-03-22
- Assignees: Symbol Technologies, Inc.
- Applicants: Symbol Technologies, LLC
- Inventors: Mark Drzymala; Carl D. Wittenberg; Edward Barkan
- Web page: https://patentgrep.com/patent/US10769394B2

## CPC

- G06K 7/10722: {Photodetector array or CCD scanning}
- G02B 7/022: {lens and mount having complementary engagement means, e.g. screw/thread}
- G02B 7/023: {permitting adjustment}
- G02B 7/025: {using glue}
- G02B 27/62: Optical apparatus specially adapted for adjusting optical elements during the assembly of optical systems
- G06K 7/10881: {constructional details of hand-held scanners}
- G06K 7/1413: {1D bar codes}
- G06K: GRAPHICAL DATA READING (image or video recognition or understanding G06V); PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

The present disclosure generally relates to devices, systems, and methods associated with optical data capture. In some embodiment, the present invention is a chassis for use in an imaging apparatus having an imaging sensor positioned fixedly relative to the chassis and a window. The chassis includes a cavity; a slot extending through a cavity wall, the cavity wall defining at least a portion of the cavity; and a lens assembly having a protrusion, the lens assembly being positioned within the cavity such that the protrusion is positioned within the slot, where the lens assembly is fixedly secured to the chassis only via a hardened adhesive.

## Claims

### Claim 1

A method of installing a lens assembly having a protrusion within a chassis having a slot extending through a cavity wall, the cavity wall defining at least a portion of the cavity, the lens assembly having a corresponding imaging sensor positioned fixedly relative to the chassis, the method comprising:
providing the chassis having a cavity configured to receive the lens assembly;
positioning the lens assembly within the chassis such that the protrusion is positioned within the slot, the lens assembly being free-floating relative to the chassis;
adjusting the lens assembly relative to the imaging sensor while the lens assembly is free-floating relative to the chassis; and
upon meeting an adjustment threshold, fixedly securing the lens assembly to the chassis.

### Claim 2 (depends on 1)

The method of claim 1, wherein, upon the of positioning the lens assembly within the chassis, at least a portion of the protrusion is accessible from outside of the chassis.

### Claim 3 (depends on 2)

The method of claim 2, further comprising:
depositing an adhesive into the slot such that the adhesive contacts at least a portion of the slot and at least a portion of the protrusion.

### Claim 4 (depends on 3)

The method of claim 3, wherein the operation of depositing the adhesive is performed after the operation of positioning the lens assembly within the chassis and before the operation of adjusting the lens assembly relative to the imaging sensor.

### Claim 5 (depends on 1)

The method of claim 1, wherein the protrusion includes a flange, the flange extending longitudinally along a body of the lens assembly, the flange having a first flange portion, a second flange portion, and a cutout separating the first flange portion and the second flange portion.

### Claim 6 (depends on 5)

The method of claim 5, wherein
upon the positioning the lens assembly within the chassis, the first flange portion and the second flange portion are accessible from outside of the chassis,
the cutout forms a channel extending along a portion of the slot, and
the method further comprises:
depositing an adhesive into the channel such that the adhesive contacts at least a portion of the slot and at least a portion of the protrusion.

### Claim 7 (depends on 1)

The method of claim 1, wherein the operation of adjusting the lens assembly relative to the imaging sensor includes determining if the imaging sensor is capturing light from a predetermined field of view.

### Claim 8 (depends on 1)

The method of claim 1, wherein the operation of adjusting the lens assembly includes:
projecting an aiming light pattern on a working surface; and
adjusting a physical position of the lens assembly until a response of the imaging sensor is within a predetermined threshold of a peak response.

### Claim 9

An imaging apparatus comprising:
a housing having a window;
a chassis positioned inside the housing, the chassis having a cavity and a slot extending through a cavity wall, the cavity wall defining at least a portion of the cavity;
an imaging sensor positioned fixedly relative to the chassis; and
a lens assembly having a protrusion, the lens assembly being positioned within the cavity such that the protrusion is positioned within the slot, the lens assembly being further positioned between the imaging sensor and the window,
wherein the lens assembly is fixedly secured to the chassis only via a hardened adhesive.

### Claim 10 (depends on 9)

The imaging apparatus of claim 9, wherein the lens assembly is positioned within the cavity such at least a portion of the protrusion is accessible from outside of the chassis.

### Claim 11 (depends on 10)

The imaging apparatus of claim 10, wherein the hardened adhesive is disposed within the slot.

### Claim 12 (depends on 9)

The imaging apparatus of claim 9, wherein the protrusion includes a flange, the flange extending longitudinally along a body of the lens assembly, the flange having a first flange portion, a second flange portion, and a cutout separating the first flange portion and the second flange portion.

### Claim 13 (depends on 12)

The imaging apparatus of claim 12, wherein
the lens assembly is positioned within the cavity such the first flange portion and the second flange portion are accessible from outside of the chassis,
the cutout forms a channel extending along a portion of the slot, and
the hardened adhesive is disposed within the channel.

### Claim 14

A barcode reader comprising:
a housing having a window;
a chassis positioned inside the housing, the chassis having a cavity and a slot extending through a cavity wall, the cavity wall defining at least a portion of the cavity;
an imaging sensor positioned fixedly relative to the chassis; and
a lens assembly having a protrusion, the lens assembly being positioned within the cavity such that the protrusion is positioned within the slot, the lens assembly being further positioned between the imaging sensor and the window,
wherein the lens assembly is fixedly secured to the chassis only via a hardened adhesive.

### Claim 15 (depends on 14)

The barcode reader of claim 14, wherein the lens assembly is positioned within the cavity such at least a portion of the protrusion is accessible from outside of the chassis.

### Claim 16 (depends on 15)

The barcode reader of claim 15, wherein the hardened adhesive is disposed within the slot.

### Claim 17 (depends on 14)

The barcode reader of claim 14, wherein the protrusion includes a flange, the flange extending longitudinally along a body of the lens assembly, the flange having a first flange portion, a second flange portion, and a cutout separating the first flange portion and the second flange portion.

### Claim 18 (depends on 17)

The barcode reader of claim 17, wherein
the lens assembly is positioned within the cavity such the first flange portion and the second flange portion are accessible from outside of the chassis,
the cutout forms a channel extending along a portion of the slot, and
the hardened adhesive is disposed within the channel.

### Claim 19

A chassis for use in an imaging apparatus having an imaging sensor positioned fixedly relative to the chassis and a window, comprising: a cavity; a slot extending through a cavity wall, the cavity wall defining at least a portion of the cavity; and a lens assembly having a protrusion, the lens assembly being positioned within the cavity such that the protrusion is positioned within the slot, wherein the lens assembly is fixedly secured to the chassis only via a hardened adhesive; wherein the protrusion includes a flange, the flange extending longitudinally along a body of the lens assembly, the flange having a first flange portion, a second flange portion, and a cutout separating the first flange portion and the second flange portion.

### Claim 20 (depends on 19)

The chassis of claim 19, wherein the lens assembly is positioned within the cavity such the first flange portion and the second flange portion are accessible from outside of the chassis, the cutout forms a channel extending along a portion of the slot, and the hardened adhesive is disposed within the channel.