Optical detecting module with waterproofing function

• US 10,039,453 B2
• Filed: 05/25/2015
• Issued: 08/07/2018
• Est. Priority Date: 11/27/2014
• Status: Active Grant

• Current Assignee: PixArt Imaging Incorporated
• Original Assignee: PixArt Imaging Incorporated
• Inventors: Tsai, Cheng-Nan, Lai, Hung-Ching, Chuang, Chih-Yuan, Lai, Hung-Yu, Lin, Yung-Chang, Liu, Yi-Min, Gu, Ren-Hau
• Primary Examiner(s): Holmes, Rex R
• Application Number:
  US14/720,845
• Publication Number:
  US 20160150960A1
• Time in Patent Office: 1,170 Days
• CPC Class Codes: A61B 2562/18 Shielding or protection of sensors from environmental influences, e.g. protection from mechanical damage
• CPC Class Codes: A61B 5/0059 using light, e.g. diagnosis by transillumination, diascopy, fluorescence A61B5/0093, A61B5/1455, A61B5/02416 and A61B5/0261 take precedence
• CPC Class Codes: A61B 5/6801 specially adapted to be attached to or worn on the body surface

Abstract

An optical detecting module with waterproofing function can be installed on a housing of a wearable device and includes an optical detecting component, a light source and a packaging structure. The light source is disposed by the optical detecting component, and the packaging structure provides the waterproofing function to the optical detecting component and the light source. The packaging structure includes a main body, a light emitting unit, alight incoming unit and a waterproofing component. The main body covers the optical detecting component and the light source. The light emitting unit and the light incoming unit are disposed on the main body and respectively face the light source and the optical detecting component. The waterproofing component is filled into a gap formed between the main body and the housing, to prevent moisture from leaking into the gap to rust terminals of the optical detecting component and the light source.

Claims

1. An optical detecting module with waterproofing function capable of being installed on a housing of a wearable device, the optical detecting module comprising:

an optical detecting component;

a light source disposed adjacent by the optical detecting component; and

a packaging structure adapted to protect the optical detecting component and the light source by the waterproofing function, the packaging structure comprising;

an opaque main body covering the optical detecting component and the light source, the opaque main body comprising a bridging portion at least partly overlapped by a suspending component of the housing, and the opaque main body further comprising an inner surface and an outer surface opposite to each other;

a light emitting unit disposed on the opaque main body and facing the light source;

a light incoming unit disposed on the opaque main body and facing the optical detecting component; and

a waterproofing component formed on the bridging portion for filling into a gap formed between the bridging portion and the suspending component, so as to prevent exterior moisture from leaking into the gap to rust terminals of the optical detecting component and/or the light source, wherein no extra waterproofing component is formed on the housing, the optical detecting component and the light source are surrounded and covered by the inner surface of the opaque main body, and opposite sides of the waterproofing component are respectively disposed on the housing and the outer surface.

2. The optical detecting module of claim 1, wherein the packaging structure further comprises at least one blocking component disposed between the optical detecting component and the light source, and/or between the light emitting unit and the light incoming unit.

3. The optical detecting module of claim 1, wherein the opaque main body further comprises a covering portion, the optical detecting component and the light source are located inside a sunken space of the covering portion, and the bridging portion is connected to an outer of the covering portion.

4. The optical detecting module of claim 3, wherein the waterproofing component is disposed between the housing and the bridging portion, and/or between the housing and the covering portion.

5. The optical detecting module of claim 3, wherein the bridging portion stretches out from the covering portion, the packaging structure is disposed inside an opening formed on the suspending component.

6. The optical detecting module of claim 1, wherein the light emitting unit and the light incoming unit are disposed on a top of the opaque main body, and a distance between the top and an opening formed on the housing is at least greater than 0.3 mm.

7. The optical detecting module of claim 1, wherein the packaging structure further comprises a first light transmissive unit and a second light transmissive unit, the first light transmissive unit is disposed between the light source and the light emitting unit, and the second light transmissive unit is disposed between the optical detecting component and the light incoming unit.

8. The optical detecting module of claim 1, wherein the optical detecting component and the light source are respectively packed inside the packaging structure, or are integrated inside the packaging structure monolithically.

9. The optical detecting module of claim 1, wherein the opaque main body is an arc shape cylinder or a polygonal cylinder.