Optical sensor device

Abstract

The present invention discloses an optical sensing device, which is applied to an optical finger navigation device and can be adapted to various appearance requirements to simplify the product verification process. The optical sensing device includes a substrate, a shell, an optical sensor and a cover plate. The shell is arranged on the substrate and has a first opening. The optical sensor is arranged on the substrate to receive an optical signal passing through the first opening. The cover plate is arranged on the shell to cover the first opening. The cover plate has a first surface and a second surface that are positioned opposite to each other. The first surface has a contour that matches the shape of the shell and is used to combine with the shell. The second surface has a contour made according to a predetermined appearance requirement, and the contour of the second surface will not affect the combination between the shell and the cover plate. As long as the product verification process of the package has been completed, the cover plate with a specially designed contour can be directly set on the package without the need to perform an additional product verification process again.

Description

Technical Field

[0001] The invention relates to an optical sensing device, and in particular to an optical sensing device which is applied to an optical finger navigation device and can be adapted to various appearance requirements to simplify a product verification process. Background Art

[0002] A conventional optical sensing device includes a substrate and a housing assembled together to provide two chambers. An optical emitter is disposed in one of the chambers, and an optical sensor is disposed in the other chamber. Then, a cover covers the housing and is attached to all side surfaces of the housing and the substrate; and a plurality of optical components, such as lenses, are disposed between the housing and the cover. A conventional optical sensing device must be disposed on a flexible printed circuit board of an optical navigation system, and the upper end of the cover is exposed to the outside through a hole of the optical navigation system to detect an object. A chip package having a substrate, a housing, an optical emitter, and an optical sensor (but not including a cover) cannot simultaneously meet various appearance requirements of an optical navigation system. If the optical navigation system changes the shape of the hole, such as changing the hole from a square to a round hole, the chip package and its related cover must be redesigned. Therefore, a conventional optical sensing device will perform a product verification process again after the chip package and the cover are redesigned and assembled. Summary of the invention

[0003] The invention relates to an optical sensing device which is applied to an optical finger navigation device and can be adapted to various appearance requirements to simplify a product verification process.

[0004] The present invention discloses an optical sensing device, which is applied to an optical finger navigation device and can be adapted to various appearance requirements to simplify the product verification process. The optical sensing device includes a substrate, a shell, an optical sensor and a cover plate. The shell is arranged on the substrate and has a first opening. The optical sensor is arranged on the substrate to receive an optical signal passing through the first opening. The cover plate is arranged on the shell to cover the first opening. The cover plate has a first surface and a second surface that are positioned opposite to each other. The first surface has a contour that matches the shape of the shell and is used to combine with the shell. The second surface has a contour made according to a predetermined appearance requirement, and the contour of the second surface does not affect the combination between the shell and the cover plate.

[0005] The invention further discloses that the housing comprises a clamping portion for clamping the optical finger navigation device. The clamping portion is adjacent to the upper end of the housing, and the first surface of the cover is arranged at the upper end and the clamping portion. The edge of the cover is aligned with the side of the clamping portion.

[0006] The invention also discloses that the cover plate is not arranged on the side end of the shell body. The optical sensing device does not need an additional product verification process when combining the cover plate and the shell body.

[0007] The invention also discloses that the housing also has a second opening. The optical sensing device further comprises an optical emitter, which is arranged on the substrate to output the optical signal toward the second opening.

[0008] The present invention also discloses that the optical sensing device further comprises a computing processor which is electrically connected to the optical sensor and is used for analyzing sensing information of the optical sensor.

[0009] The present invention also discloses an optical sensing device, which is applied to an optical finger navigation device and can be adapted to various appearance requirements to simplify the product verification process. The optical sensing device includes a substrate, a housing, an optical sensor, and a cover plate. The housing is disposed on the substrate and has a first opening and a snap-fit ​​portion. The snap-fit ​​portion snaps into the optical finger navigation device. The optical sensor is disposed on the substrate to receive an optical signal passing through the first opening. The cover plate is disposed in an area outside the snap-fit ​​portion of the housing to cover the first opening, and the cover plate has a contour made according to a predetermined appearance requirement.

[0010] The invention also discloses that the engaging portion is adjacent to the upper end of the shell, and the cover plate is arranged on the upper end. The edge of the cover plate is aligned with the side edge of the upper end. The cover plate is not arranged on the side surface of the upper end of the shell.

[0011] The cover plate is directly attached to the shell, which can minimize the height of the optical sensor device, and the cover plate is only set on the upper surface of the shell, which can reduce the width of the optical sensor device. The package includes a substrate, a shell, an optical sensor, an optical transmitter and an operation processor (but not including the cover plate), which can be pre-assembled and tested for the product verification process, and the cover plate is an independent component that does not need to undergo the product verification process. The shape and contour of the cover plate are made according to the appearance requirements of the optical finger navigation device and can be assembled on the package; in other words, the cover plate and the package provided by the optical finger navigation device are two independent components, and the shape and contour of the cover plate will be designed according to the holes of the optical finger navigation device. Regardless of the shape and contour of the cover plate, the appearance of the package is not affected. As long as the product verification process of the package has been completed, the cover plate with a specially designed contour can be directly set on the package without the need to perform an additional product verification process again. Therefore, the present invention can effectively save the verification cost and verification time of the optical sensor device. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 FIG. 4 is a schematic diagram of the appearance of an optical finger navigation device with an optical sensing device according to an embodiment of the present invention.

[0013] Figure 2 FIG. 1 is a schematic structural diagram of an optical sensing device according to a first embodiment of the present invention.

[0014] Figure 3 FIG. 4 is a cross-sectional view of the structure of an optical sensing device according to a first embodiment of the present invention.

[0015] Figure 4 FIG. 4 is a schematic structural diagram of an optical sensing device according to a second embodiment of the present invention.

[0016] Figure 5 FIG. 4 is a cross-sectional view of the structure of an optical sensing device according to a second embodiment of the present invention.

[0017] The reference numerals are described as follows:

[0018] 10. Optical Finger Navigation Device

[0019] 101 Holes

[0020] 12,12' Optical sensor

[0021] 14 substrate

[0022] 16 Housing

[0023] 161 Top

[0024] 162 Upper side

[0025] 163 Flat part

[0026] 164 Lower side

[0027] 161A Side

[0028] 161B Side surface

[0029] 18 Optical Sensor

[0030] 20 Optical Transmitter

[0031] 22 Processor

[0032] 24,24' Cover

[0033] 241,241' Edge

[0034] 26 First opening

[0035] 28 Second opening

[0036] 30 First Surface

[0037] 32 Second Surface

[0038] 34 snap-fit ​​part

[0039] 341 Side DETAILED DESCRIPTION

[0040] See also Figures 1 to 3 . Figure 1 FIG. 1 is a schematic diagram of the appearance of an optical finger navigation device 10 having an optical sensing device 12 according to an embodiment of the present invention. Figure 2 is a schematic structural diagram of an optical sensing device 2 according to a first embodiment of the present invention, Figure 3 1 is a cross-sectional view of the structure of the optical sensor device 12 of the first embodiment of the present invention. The optical finger navigation device 10 can be applied to a remote control device, an in-car entertainment system, a steering wheel device, a notebook computer or a medical device. The appearance of the optical sensor device 12 has a special design and can be adapted to various predetermined appearance requirements of the optical finger navigation device 10, thereby simplifying the product verification process.

[0041] The optical sensing device 12 may include a substrate 14, a housing 16, an optical sensor 18, an optical emitter 20, an operation processor 22, and a cover plate 24. The housing 16 may be disposed on the substrate 14 and have a first opening 26 and a second opening 28. The optical sensor 18, the optical emitter 20, and the operation processor 22 may be disposed on the substrate 14 to be electrically connected to each other. The optical emitter 20 is an optional accessory for outputting an optical signal toward the second opening 28. The optical sensor 18 may receive an optical signal reflected from a target object and passing through the first opening 26. The operation processor 22 may cause the optical emitter 20 to adjust the frequency and intensity of the optical signal, and may also receive sensing information from the optical sensor 18 for analysis. The cover plate 4 may be disposed on the housing 16 to cover the first opening 26 and the second opening 28.

[0042] The cover 24 may have a first surface 30 and a second surface 32 that are positioned opposite to each other. The first surface 30 may be attached to the housing 16 and is designed to provide a contour that is adapted to the shape of the housing 16. The connection between the housing 16 and the cover 24 will not be affected by the contour of the second surface 32, so the contour of the second surface 32 can be made according to the predetermined appearance requirements of the optical finger navigation device 10. For example, the second surface 32 of the cover 24 may be designed to be square or circular, depending on actual needs; the shape of the second surface 32 corresponds to the shape of the hole 101 of the optical finger navigation device 10. The top of the optical sensing device 12 is embedded in the hole 101 to provide a touch area of ​​the optical finger navigation device 10.

[0043] In the first embodiment, the optical sensor 18, the optical transmitter 20 and the computing processor 22 can be combined with the substrate 14 and the housing 16 to form a single package, and the package and the cover plate 24 can be two independent components for easy transportation and storage. After the product verification process of the package is completed, the package can be set on the optical finger navigation device 10; then, the cover plate 24 can be assembled on the package without performing the product verification process again, that is, the optical sensor device 12 does not need an additional product verification process when combining the cover plate 24 and the housing 16. Therefore, if the two holes 101 of the optical finger navigation device 10 are square and circular respectively, the two packages have the same internal structure and only need to perform one product verification process, and the two cover plates 24 with different shapes can be respectively assembled on the two packages without performing an additional product verification process. In other words, the second surface 32 of the cover plate 24 can be made into any shape of contour according to the purpose of the touch area of ​​the optical sensor device 12, but it will not increase the number of times the product verification process is performed.

[0044] In addition, the housing 16 may also selectively include a snap-fit ​​portion 34 disposed at the edge of the touch area of ​​the optical sensor device 12 for snapping into the housing of the optical finger navigation device 10; and a portion of the cover plate 24 may be clamped between the snap-fit ​​portion 34 and the optical finger navigation device 10. The upper end 161 of the housing 16 may be disposed below the portion of the cover plate 24 as a touch area, and the size of the upper end 161 is the same as or similar to the sum of the sizes of the touch area of ​​the optical finger navigation device 10 and the hole 101. The snap-fit ​​portion 34 may be considered as a combination of the upper side end 162 and the flat portion 163 of the housing 16, and is connected to and adjacent to the upper end 161, and is also shielded by a portion of the cover plate 24. The snap-fit ​​portion 34 may abut against the inner wall of the hole 101 to stably fix the optical sensor device 12 inside the optical finger navigation device 10.

[0045] The first surface 30 of the cover plate 24 has a profile that matches the shape of the housing 16, so that the first surface 30 can be tightly combined with the upper end 161 and the engaging portion 34. The edge 241 of the cover plate 24 can be selectively aligned with the side edge 341 of the engaging portion 34, so that the cover plate 24 does not contact the lower side end 164 of the housing 16. The protrusion of the cover plate 24, that is, the top portion abutting the upper end 161 and the upper side end 162, can be used as a touch area of ​​the optical sensing device 12 to be exposed from the hole 101 of the optical finger navigation device 10. The shape of the protrusion can be pre-set to match the hole 101 of the optical finger navigation device 10, and the cover plate 24 will be assembled to the housing 16 after the optical sensing device 12 passes the product verification process.

[0046] See also Figure 1 , Figure 4 and Figure 5 . Figure 4is a schematic structural diagram of an optical sensing device 12' according to a second embodiment of the present invention, Figure 5 2 is a cross-sectional view of the structure of an optical sensing device 12' according to a second embodiment of the present invention. In the second embodiment, components with the same reference numerals as those in the first embodiment have the same structure and function, and will not be described again herein. The optical sensing device 12' may include a substrate 14, a housing 16, an optical sensor 18, an optical transmitter 20, an operation processor 22, and a cover plate 24'. The cover plate 24' may cover the upper end 161 of the housing 16, but will not cover the upper side end 162, the flat portion 163, and the lower side end 164. The optical sensing device 12' will begin the product verification process after the cover plate 24' is assembled to the housing 16.

[0047] In the second embodiment, the contour provided by the cover plate 24' is made according to the predetermined appearance requirements of the optical finger navigation device 10. The cover plate 24' can be arranged on the housing 16 in other areas except the engaging portion 34, that is, the edge 241' of the cover plate 24' will be aligned with the side edge 161A of the upper end 161, and the cover plate 24' will not contact the side surface 161B of the upper end 161. The optical sensor device 12 of the first embodiment and the optical sensor device 12' of the second embodiment can be directly installed inside the optical finger navigation device 10, rather than being arranged on the flexible printed circuit board of the optical finger navigation device 10.

[0048] In the present invention, the cover plate is directly attached and contacted to the shell, which can minimize the height dimension of the optical sensing device, and the cover plate is only arranged on the upper surface of the shell, which can reduce the width dimension of the optical sensing device. The package includes a substrate, a shell, an optical sensor, an optical transmitter and an operation processor (but not including the cover plate), which can be pre-assembled and tested for the product verification process, and the cover plate is an independent component that does not need to undergo the product verification process. The shape contour of the cover plate is made according to the appearance requirements of the optical finger navigation device and can be assembled on the package; in other words, the cover plate and the package provided by the optical finger navigation device are two independent components, and the shape contour of the cover plate will be designed according to the holes of the optical finger navigation device. Regardless of the shape contour of the cover plate, the appearance of the package is not affected. As long as the product verification process of the package has been completed, the cover plate with a specially designed contour can be directly set on the package without the need to perform an additional product verification process again. Therefore, the present invention can effectively save the verification cost and verification time of the optical sensing device.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An optical sensing device, applied to an optical finger navigation device, and applicable to various appearance requirements to simplify the product verification process, characterized in that: The optical sensing device comprises: substrate; A housing, disposed on the substrate and having a first opening; an optical sensor, disposed on the substrate, for receiving an optical signal passing through the first opening; and A cover plate, disposed on the housing to cover the first opening, the cover plate having a first surface and a second surface that are opposite to each other, the first surface having a profile that matches the shape of the housing and is used to combine with the housing, the second surface having a profile that is made according to a predetermined appearance requirement, and the profile of the second surface does not affect the combination between the housing and the cover plate; The housing comprises a clamping portion for clamping the optical finger navigation device; The housing also has a second opening, and the optical sensing device further includes an optical transmitter disposed on the substrate to output the optical signal toward the second opening; The optical sensing device further includes a computing processor electrically connected to the optical sensor for analyzing sensing information of the optical sensor.

2. The optical sensing device according to claim 1, wherein: The clamping portion is adjacent to the upper end of the shell, and the first surface of the cover is arranged on the upper end and the clamping portion.

3. The optical sensing device according to claim 1, wherein: The edge of the cover plate is aligned with the side of the locking portion.

4. The optical sensing device according to claim 1, wherein: The cover plate is not arranged on the side end of the shell.

5. The optical sensing device according to claim 1, wherein: The optical sensor device does not require an additional product verification process when combining the cover plate and the housing.

6. An optical sensing device, applied to an optical finger navigation device, and applicable to various appearance requirements to simplify the product verification process, characterized in that: The optical sensing device comprises: substrate; A housing is disposed on the substrate and has a first opening and a clamping portion, wherein the clamping portion is clamped in the optical finger navigation device; an optical sensor, disposed on the substrate, for receiving an optical signal passing through the first opening; and A cover plate, disposed in an area outside the engaging portion of the housing to cover the first opening, the cover plate having a contour made according to a predetermined appearance requirement; The housing also has a second opening, and the optical sensing device further includes an optical emitter, which is disposed on the substrate to output the optical signal toward the second opening; The optical sensing device further includes a processor, which is electrically connected to the optical sensor and is used to analyze sensing information of the optical sensor.

7. The optical sensing device according to claim 6, characterized in that The clamping portion is adjacent to the upper end of the shell, and the cover plate is arranged on the upper end.

8. The optical sensing device according to claim 7, characterized in that The edge of the cover plate is aligned with the side of the upper end.

9. The optical sensing device according to claim 7, characterized in that: The cover plate is not arranged on the side surface of the upper end of the housing.

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