Optical detection device and optical navigation apparatus

Patent metadata

Field	Value
Publication number	US-11868541-B2
Application number	US-202217719334-A
Country	US
Kind code	B2
Filing date	Apr 12, 2022
Priority date	May 5, 2020
Publication date	Jan 9, 2024
Grant date	Jan 9, 2024

Abstract

An optical detection device includes a substrate, a housing, an optical modulating component, an optical sensor and a cover. The housing is disposed on the substrate and includes a first aperture. The housing is unvaried due to inspection standard or design requirement of the optical detection device. The optical modulating component is disposed on the housing and aligning with the first aperture. The optical sensor is disposed on the substrate and adapted to receive an optical signal passing through the optical modulating component and the first aperture. The cover is disposed on the housing to cover the first aperture. The cover is replaceable for attaching the cover varied for the inspection standard or the design requirement to the unvaried housing in response to a surface of the cover opposite to the housing matched and engaged with a light penetrating area on the optical navigation apparatus.

First claim

What is claimed is:

1. An optical detection device applied to an optical navigation apparatus and suitable for a variety of appearance, the optical detection device comprising:
a substrate;
a housing disposed on the substrate and comprising a first aperture, the housing being unvaried due to inspection standard or design requirement of the optical detection device;
an optical modulating component disposed on the housing and aligning with the first aperture;
an optical sensor disposed on the substrate and adapted to receive an optical signal passing through the optical modulating component and the first aperture; and
a cover disposed on the housing in a spaced manner to cover the optical modulating component that is located above the first aperture, the cover being replaceable for attaching the cover varied for the inspection standard or the design requirement to the unvaried housing in response to a surface of the cover opposite to the housing matched and engaged with a light penetrating area on the optical navigation apparatus.

2. The optical detection device of claim 1 , wherein the cover is disposed on an upper side of the housing to expose a lateral of the housing and to seal and cover the first aperture.

3. The optical detection device of claim 1 , wherein the cover comprises a first surface and a second surface opposite to each other, a contour of the first surface is matched with a shape of the housing, a contour of the second surface is matched with the light penetrating area on the optical navigation apparatus, and the second surface aligns with an outer surface of the optical navigation apparatus.

4. The optical detection device of claim 1 , wherein the housing comprises an engaging portion adapted to engage with the optical navigation apparatus, the engaging portion is adjacent to an upper portion of the housing, a first surface of the cover is attached to the upper portion and the engaging portion, and an edge of the cover aligns with a lateral side of the engaging portion.

5. The optical detection device of claim 1 , wherein the cover is not attached to a lateral portion of the housing.

6. The optical detection device of claim 1 , wherein the optical detection device is in no need of extra product qualification procedure in response to assembly of the cover and the housing.

7. The optical detection device of claim 1 , wherein the housing further comprises a second aperture, and the optical detection device further comprises an optical emitter disposed on the substrate and adapted to emit the optical signal toward the second aperture.

8. The optical detection device of claim 1 , wherein the optical detection device further comprises an operation processor electrically connected to the optical sensor and adapted to analyze a sensor datum from the optical sensor.

9. An optical detection device applied to an optical navigation apparatus and suitable for a variety of appearance, the optical detection device comprising:
a substrate;
a housing disposed on the substrate and comprising a first aperture and an engaging portion, the engaging portion being adapted to engage with the optical navigation apparatus, the housing being unvaried due to inspection standard or design requirement of the optical detection device;
an optical modulating component disposed on the housing and aligning with the first aperture;
an optical sensor disposed on the substrate and adapted to receive an optical signal passing through the optical modulating component and the first aperture; and
a cover attached to the housing in a spaced manner except the engaging portion for covering the optical modulating component that is located above the first aperture, the cover being replaceable for attaching the cover varied for the inspection standard or the design requirement to the unvaried housing in response to a surface of the cover opposite to the housing matched and engaged with a light penetrating area on the optical navigation apparatus.

10. The optical detection device of claim 9 , wherein the cover is disposed on an upper side of the housing to expose a lateral of the housing and to seal and cover the first aperture.

11. The optical detection device of claim 9 , wherein the cover comprises a first surface and a second surface opposite to each other, a contour of the first surface is matched with a shape of the housing, a contour of the second surface is matched with the light penetrating area on the optical navigation apparatus, and the second surface aligns with an outer surface of the optical navigation apparatus.

12. The optical detection device of claim 9 , wherein the engaging portion is adjacent to an upper portion of the housing, the cover is attached to the upper portion, an edge of the cover aligns with a lateral side of the upper portion, and the cover is not attached to a lateral surface of the upper portion of the housing.

13. The optical detection device of claim 9 , wherein the housing further comprises a second aperture, and the optical detection device further comprises an optical emitter disposed on the substrate and adapted to emit the optical signal toward the second aperture.

14. The optical detection device of claim 9 , wherein the optical detection device further comprises an operation processor electrically connected to the optical sensor and adapted to analyze a sensor datum from the optical sensor.

15. An optical navigation apparatus, comprising:
a case having an accommodating structure, the accommodating structure comprising an upper section and a lower section connected to each other;
a circuit board disposed inside the case; and
an optical detection device, comprising:
a substrate disposed on the circuit board;
an optical sensor disposed on the substrate and adapted to receive an optical signal entering the case; and
a housing disposed on the substrate and covering the optical sensor, the housing comprising a first aperture where through the optical signal passes, the housing being covered by the accommodating structure wherein the upper section is varied for inspection standard or design requirement of the optical detection device and the lower section is connected to the housing unvaried due to the inspection standard or the design requirement, and the housing is attached to the accommodating structure in a replaceable manner for aligning with a light penetrating area on the optical navigation apparatus.

16. The optical navigation apparatus of claim 15 , wherein the optical detection device further comprises an optical modulating component disposed on the housing and aligning with the first aperture, the optical signal passes through the optical modulating component and is received by the optical sensor.

17. The optical navigation apparatus of claim 15 , wherein the housing is attached to the accommodating structure to expose a lateral of the housing.

18. The optical navigation apparatus of claim 15 , wherein the accommodating structure is disposed on an upper side of the housing to seal and cover the first aperture.

19. The optical navigation apparatus of claim 15 , wherein the housing further comprises a second aperture, and the optical detection device further comprises an optical emitter disposed on the substrate and adapted to emit the optical signal toward the second aperture.

20. The optical navigation apparatus of claim 15 , wherein the optical detection device further comprises an operation processor electrically connected to the optical sensor and adapted to analyze a sensor datum from the o

Assignees

• Pixart Imaging Inc

Inventors

• Wang Wei-Chung

Classifications

• G06F3/0202 Primary

  Constructional details or processes of manufacture of the input device · CPC title

• G06F3/0304

  Detection arrangements using opto-electronic means (constructional details of pointing devices not related to the detection arrangement using opto-electronic means G06F3/033; optical digitisers G06F3/042) · CPC title

• G06F3/0317 Primary

  in co-operation with a patterned surface, e.g. absolute position or relative movement detection for an optical mouse or pen positioned with respect to a coded surface · CPC title

• G06F3/03547

  Touch pads, in which fingers can move on a surface · CPC title

• G06F3/042

  by opto-electronic means · CPC title