CN106648041B - Optical detection device capable of avoiding environmental pollution - Google Patents
Optical detection device capable of avoiding environmental pollution Download PDFInfo
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- CN106648041B CN106648041B CN201510736034.1A CN201510736034A CN106648041B CN 106648041 B CN106648041 B CN 106648041B CN 201510736034 A CN201510736034 A CN 201510736034A CN 106648041 B CN106648041 B CN 106648041B
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- light
- detection device
- optical detection
- unit
- normal vector
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/011—Arrangements for interaction with the human body, e.g. for user immersion in virtual reality
- G06F3/015—Input arrangements based on nervous system activity detection, e.g. brain waves [EEG] detection, electromyograms [EMG] detection, electrodermal response detection
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/01—Indexing scheme relating to G06F3/01
- G06F2203/011—Emotion or mood input determined on the basis of sensed human body parameters such as pulse, heart rate or beat, temperature of skin, facial expressions, iris, voice pitch, brain activity patterns
Abstract
The invention discloses an optical detection device capable of avoiding environmental pollution, which comprises a shell, an optical detection component and a light-transmitting piece. The housing has a light incident unit and at least one accommodating structure. The light detection component is arranged in the accommodating structure. The light-transmitting piece is arranged in the accommodating structure and positioned above the light detection assembly so as to at least partially fill the accommodating structure and block the light-entering unit and the light detection assembly.
Description
Technical Field
The present invention provides an optical detection device, and more particularly, to an optical detection device capable of preventing environmental pollution.
Background
The existing wearable device is widely used in various climatic environments, and the target has the characteristics of water resistance, heat resistance, cold resistance and the like. The optical sensing device is arranged on the wearable device and used for providing a high-precision biological characteristic sensing function. However, the conventional optical sensing device is not perfect in dust-proof effect, and the optical sensing component of the optical sensing device is easily polluted by surface skin, sweat, grease, dust of external environment or suspended particle bucket of a wearer, so that noise is formed in the optical sensing information, and the accuracy of the optical sensing information is greatly damaged. Therefore, how to effectively improve the influence of environmental dust on the photo-sensing information without increasing the manufacturing cost excessively or reducing the assembly yield is the key development topic of the related industries.
Disclosure of Invention
The present invention provides an optical detection device capable of avoiding environmental pollution, so as to solve the above-mentioned problems.
The present invention discloses an optical detection device capable of preventing environmental pollution, which comprises a housing, an optical detection component, and a light-transmitting member. The housing has a light incident unit and at least one accommodating structure. The light detection component is arranged in the accommodating structure. The light-transmitting piece is arranged in the accommodating structure and positioned above the light detection assembly so as to at least partially fill the accommodating structure and block the light-entering unit and the light detection assembly.
The optical detection device is provided with the light-transmitting piece in the shell, and the light-transmitting piece is blocked between the light-entering unit and the optical detection assembly. When the light-transmitting piece is directly attached to the light detection assembly, the light-transmitting piece can prevent dust falling into the shell through the light inlet unit (light inlet hole) from directly falling onto the light detection assembly, so that environmental dust pollution can be prevented; when the light-transmitting member is located above the optical detection assembly in a suspended manner, the dust can be isolated to a position far away from the optical detection assembly, and the isolation distance is determined according to the thickness of the light-transmitting member and/or the distance between the light-transmitting member and the optical detection assembly, so that the interference of environmental dust on the image capturing result of the optical detection device is reduced. Compared with the prior art, the invention can effectively reduce the influence of environmental dust on the detection performance of the optical detection device and has better market competitiveness.
Drawings
FIG. 1 is a schematic structural diagram of an optical detection device in which a transparent member is attached to an optical detection element according to an embodiment of the present invention.
FIG. 2 is a schematic structural diagram of an optical detection device with a light-transmissive member suspended above a light-detecting element according to another embodiment of the present invention.
FIG. 3 is a schematic structural diagram of an optical detection device with an irregular housing appearance according to another embodiment of the present invention.
The reference numbers illustrate:
10 optical detection device
12 casing
14 light detecting assembly
16 light-transmitting member
161 flat surface
18 luminous assembly
20 light-isolating piece
22 light entrance unit
24 accommodating structure
26 light emitting unit
28 base
30 cover body
32 connecting piece
Plane normal vector of V1 flat surface
Normal vector of detecting surface of V2 detecting element
V3 plane normal vector of light entrance unit
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
Referring to fig. 1 to 3, fig. 1 to 3 are respectively schematic structural diagrams of an optical detection device 10 according to different embodiments of the present invention. The optical detection device 10 can be applied to wearable devices such as a smart watch or a smart bracelet, and is used for detecting biological characteristic information such as a skin surface layer or a subcutaneous blood vessel of a wearer. The optical detection device 10 includes a housing 12, a light detection element 14, and a light transmissive element 16, and optionally includes a light emitting element 18 and a light blocking element 20. The housing 12 has a light-incident unit 22 and a receiving structure 24, and optionally has a light-emitting unit 26 according to the design of the light-emitting device 18. The housing 12 is primarily comprised of a base 28 and a cover 30. A circuit board (not shown) may be disposed on the base 28, and the light detecting element 14 and the light emitting element 18 are electrically connected to the circuit board through wires. The cover 30 stands on the base 28 and surrounds the light detecting element 14 and the light emitting element 18 for protection. The receiving structure 24 is the space formed by the base 28 and the cover 30. The light incident unit 22 and the light emitting unit 26 are light incident holes and light emitting holes on the cover 30.
The light detecting element 14 is disposed in the receiving structure 20 and corresponds to the light incident unit 22, and the light emitting element 18 is disposed in the receiving structure 20 and corresponds to the light emitting unit 26. The light-shielding member 20 is disposed between the light-detecting element 14 and the light-emitting element 18 for preventing the light signal output by the light-emitting element 18 from being directly absorbed by the light-detecting element 14 without passing through the housing 12. The light-transmitting member 16 is disposed in the accommodating structure 20 and above the light-detecting element 14. The light-transmitting member 16 is partially filled in the accommodating structure 20 and is blocked between the light-entering unit 22 and the light-detecting element 14, so as to prevent external dust from falling onto the light-detecting element 14 through the light-entering unit 22 or dust in the housing 12. Therefore, the present invention can effectively protect the optical detection element 14 from environmental pollution, so that the optical detection device 10 has stable and good detection quality.
Generally, the thickness of the light-transmitting member 16 is between about 50 and 1000 micrometers (μm), depending on the size of the housing 12 and the location of the light-transmitting member 16. The thicker light-transmitting member 16 can directly interfere with the light-entering unit 22, so as to prevent dust from entering the housing 12 through the light-entering unit 22; the thin light-transmitting member 16 covers the top of the photo-detecting element 14, so that dust will not fall onto the lens of the photo-detecting element 14 even if entering the housing 12, and the detection quality of the photo-detecting element 14 will not be affected. In addition, the light-transmitting member 16 can be used with infrared or ultraviolet light filtering function, such as forming a filter layer on the surface of the light-transmitting member 16, or the light-transmitting member 16 itself is made of filtering material. The wavelength range filtered by the light-transmitting member 16 is not limited to the infrared light and the ultraviolet light described above, depending on the design requirements.
The optical detection device 10 shown in fig. 1 has a light-transmitting member 16 disposed on a light detection element 14 in a direct contact manner. In another embodiment of fig. 2, the light-transmitting member 16 is suspended above the light-detecting element 14 by a connecting member 32. For example, the connecting member 32 can be a short rod, both ends of which are connected to the light-transmitting member 16 and the cover 30 of the housing 12; alternatively, the connecting member 32 may be a wall structure that is disposed around the hole shape of the light-entering unit 22 to fill the gap between the light-entering unit 22 and the light-detecting element 14. However, the actual structure of the connecting member 32 is not limited thereto.
The light-transmitting member 16 is a generally sheet-type optical component having two opposing flat surfaces 161 that are substantially parallel. In the embodiment shown in fig. 1 and fig. 2, the plane normal vector V1 of the flat surface 161 is parallel to the detecting plane normal vector V2 of the light detecting element 14 and the plane normal vector V3 of the light entering unit 22. Fig. 3 teaches another embodiment of the optical detection device 10, wherein the housing 30 has an irregular shape, i.e. the plane normal vector V1 of the flat surface 161 is parallel to the detection plane normal vector V2 but not parallel to the plane normal vector V3. The embodiment of fig. 3 has the protruded light unit 22 closer to the skin of the wearer to avoid the noise interference of the ambient light; accordingly, the flat surface 161 of the light-transmitting member 16 is disposed in the receiving structure 24 in a manner non-parallel to the normal vector V3 of the plane of the light-entering unit 22. The inclined angle of the transparent member 16 can be varied according to the actual requirement.
The light-transmitting member 16 mentioned in the above embodiment is an optical component that is independently installed and installed, and can be flatly attached to the detection surface of the light-detecting element 14 or suspended above the light-detecting element 14. In addition, the optical detection apparatus 10 can fill the containing structure 24 with a sealant to serve as the light-transmitting member 16 for isolating dust. The manufacturing process of the sealant-type light-transmitting member 16 directly fills the liquid glue into the accommodating structure 24 (for example, through the light-entering unit 22), the liquid glue naturally flows over the light-detecting element 14, and the solidified solid glue has the effects of light transmission and dust isolation. However, the possible application of the light-transmitting member 16 is not limited thereto.
In summary, the optical detection device of the present invention includes a light-transmitting member disposed in the housing, and the light-transmitting member is blocked between the light-entering unit and the optical detection assembly. When the light-transmitting piece is directly attached to the light detection assembly, the light-transmitting piece can prevent dust falling into the shell through the light inlet unit (light inlet hole) from directly falling onto the light detection assembly, so that environmental dust pollution can be prevented; when the light-transmitting member is located above the optical detection assembly in a suspended manner, the dust can be isolated to a position far away from the optical detection assembly, and the isolation distance is determined according to the thickness of the light-transmitting member and/or the distance between the light-transmitting member and the optical detection assembly, so that the interference of environmental dust on the image capturing result of the optical detection device is reduced. Compared with the prior art, the invention can effectively reduce the influence of environmental dust on the detection performance of the optical detection device and has better market competitiveness.
The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.
Claims (4)
1. An optical detection device capable of preventing environmental pollution, comprising:
a housing having a light incident unit and at least one accommodating structure; the shell comprises a base and a cover body, the cover body is arranged on the base and is in an irregular shape, and the light incident surface of the light incident unit is inclined;
a light detecting component, which is arranged in the containing structure; and
a light-transmitting member disposed in the accommodating structure and above the light-detecting element to at least partially fill the accommodating structure and block the light-entering unit from the light-detecting element; the light transmitting piece is a thin sheet type optical component and is provided with two substantially parallel opposite flat surfaces, a plane normal vector of the flat surfaces is parallel to a detection surface normal vector of the light detecting component and is not parallel to a plane normal vector of the light inlet unit, correspondingly, the flat surfaces of the light transmitting piece are arranged in the containing structure in a non-parallel mode to the plane normal vector of the light inlet unit, the light transmitting piece is suspended above the light detecting component through a connecting piece, and the connecting piece is of a wall surface structure and is arranged in a surrounding mode along the hole shape of the light inlet unit so as to completely fill up the gap between the light inlet unit and the light detecting component.
2. A detection device according to claim 1 wherein said transparent member has a thickness of 50 to 1000 μm.
3. An optical detection device according to claim 1 wherein the light transmissive member has a filter layer or is made of a filter material.
4. An optical detection device as claimed in claim 1 wherein the housing further has a light emitting unit, the optical detection device further comprising:
a light emitting component arranged in the accommodating structure and corresponding to the light emitting unit; and
and the light-isolating piece is arranged between the light-emitting component and the light-detecting component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510736034.1A CN106648041B (en) | 2015-11-03 | 2015-11-03 | Optical detection device capable of avoiding environmental pollution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510736034.1A CN106648041B (en) | 2015-11-03 | 2015-11-03 | Optical detection device capable of avoiding environmental pollution |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106648041A CN106648041A (en) | 2017-05-10 |
| CN106648041B true CN106648041B (en) | 2020-05-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510736034.1A Active CN106648041B (en) | 2015-11-03 | 2015-11-03 | Optical detection device capable of avoiding environmental pollution |
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| Country | Link |
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| CN (1) | CN106648041B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101063909A (en) * | 2006-04-26 | 2007-10-31 | 宝德科技股份有限公司 | Optical mouse with shading device and operation method thereof |
| CN102017415A (en) * | 2008-05-09 | 2011-04-13 | Led产品设计有限公司 | Capacitive sensing apparatus |
| CN201796875U (en) * | 2010-08-18 | 2011-04-13 | 矽格股份有限公司 | Proximity sensitive package structure |
| CN103151361A (en) * | 2011-12-07 | 2013-06-12 | 原相科技股份有限公司 | Wafer level image chip package and optical structure |
| TW201403831A (en) * | 2012-07-12 | 2014-01-16 | Pixart Imaging Inc | Optical device with embedded non-lens transparent package |
-
2015
- 2015-11-03 CN CN201510736034.1A patent/CN106648041B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101063909A (en) * | 2006-04-26 | 2007-10-31 | 宝德科技股份有限公司 | Optical mouse with shading device and operation method thereof |
| CN102017415A (en) * | 2008-05-09 | 2011-04-13 | Led产品设计有限公司 | Capacitive sensing apparatus |
| CN201796875U (en) * | 2010-08-18 | 2011-04-13 | 矽格股份有限公司 | Proximity sensitive package structure |
| CN103151361A (en) * | 2011-12-07 | 2013-06-12 | 原相科技股份有限公司 | Wafer level image chip package and optical structure |
| TW201403831A (en) * | 2012-07-12 | 2014-01-16 | Pixart Imaging Inc | Optical device with embedded non-lens transparent package |
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| Publication number | Publication date |
|---|---|
| CN106648041A (en) | 2017-05-10 |
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