TWI894952B - Optical detection apparatus in one-shot mode - Google Patents

Abstract

The present invention provides an optical detection apparatus in one-shot mode for detecting four lateral surfaces of a component. The optical detection apparatus includes a carrying base and two detection modules assembled to the carrying base. The carrying base is provided for allowing the component to be disposed thereon. Each of the two detection modules includes an optical receiving unit, two light sources, and a light transmission assembly. The four light sources of the two detection modules are configured to respectively emit four light beams toward the four lateral surfaces of the component. The two light transmission assemblies of the two detection modules are configured for transmitting the four light beams, reflected from the four lateral surfaces, to the two optical receiving units along four light paths that are different from each other.

Description

Single-station optical inspection equipment

The present invention relates to an optical inspection device, and more particularly to a single-station optical inspection device.

Most existing optical inspection equipment utilizes a multi-station configuration to inspect multiple sides of a web separately. Consequently, the entire inspection process takes a long time and requires a large amount of space. The inventors, believing these deficiencies can be addressed, conducted intensive research and applied scientific principles to develop the present invention, which has a rational design and effectively addresses these deficiencies.

An embodiment of the present invention provides a single-station optical inspection device that can effectively improve the defects that may occur in existing optical inspection equipment.

The present invention discloses a single-station optical inspection device for inspecting two first sides and two second sides of a web. The single-station optical inspection device comprises: a supporting base including: a bracket; and a detection cavity connected to the bracket and defining a configuration space around the bracket; wherein the detection cavity has a placement area for the web to be placed, and a first light-transmitting area and a second light-transmitting area connected to the configuration space; wherein the placement area and the first light-transmitting area are arranged along a first direction, and the second light-transmitting area is arranged perpendicular to the placement area. The first direction is along a second direction; wherein the two first sides are located on opposite sides of the sheet along the second direction, and the two second sides are located on opposite other sides of the sheet along a third direction perpendicular to the first and second directions; a first detection module comprising: a first light receiving unit mounted on the bracket and facing the first light-transmitting area along the first direction; two first light sources disposed facing the storage area; wherein the two first light sources are capable of emitting two first light beams toward the two first sides, respectively; and ... and a first detection module comprising: a first light receiving unit mounted on the bracket and facing the first light-transmitting area along the first direction; and two first light sources disposed facing the storage area; wherein the two first light sources are capable of emitting two first light beams toward the two first sides, respectively. A light transmission component is located in the configuration space and defines two first light paths, each of which passes through the first light-transmitting area from the configuration space to reach the first light receiving unit; wherein the first light transmission component can be used to transmit the two first light rays reflected from the two first side surfaces along the two first light paths to the first light receiving unit; and a second detection module, which includes: a second light receiving unit, mounted on the bracket and facing the second light-transmitting area along the second direction; two second light sources, arranged facing the storage area; wherein, The two second light sources are configured to emit two second light beams toward the two second side surfaces, respectively. A second light transmission assembly is located within the configuration space and defines two second light paths, each of which passes through the second light-transmitting region from the configuration space to the second light receiving unit. The two second light paths are located outside the two first light paths and do not intersect with each other. The second light transmission assembly is configured to transmit the two second light beams reflected from the two second side surfaces along the two second light paths to the second light receiving unit, respectively.

The present invention also discloses a single-station optical inspection device for inspecting two first sides and two second sides of a web. The single-station optical inspection device comprises: a supporting base defining a configuration space, wherein the supporting base has a storage area for the web, and a first light-transmitting area and a second light-transmitting area connected to the configuration space; a first inspection module comprising: a first light receiving unit mounted on the first side of the web; The supporting base faces the first light-transmitting area; two first light sources are disposed facing the storage area; wherein the two first light sources are configured to emit two first light beams toward the two first sides, respectively; and a first light transmission component is disposed within the configuration space and defines two first light paths, each of which passes from the configuration space through the first light-transmitting area to the first light receiving unit; wherein the first light transmission component is configured to transmit The two first light rays reflected from the two first side surfaces are respectively transmitted along two first optical paths to the first light receiving unit; and a second detection module comprises: a second light receiving unit mounted on the supporting base and facing the second light-transmitting area; two second light sources disposed facing the storage area; wherein the two second light sources are configured to emit two second light rays toward the two second side surfaces; and a second light transmission assembly disposed within the configuration space and defining two second light paths, each of which passes from the configuration space through the second light-transmitting area to the second light receiving unit; wherein the two second light paths are located outside the two first light paths and do not intersect with each other; wherein the second light transmission assembly is configured to transmit the two second light rays reflected from the two second side surfaces along the two second optical paths to the second light receiving unit.

In summary, the single-station optical inspection equipment disclosed in the embodiments of the present invention utilizes the first inspection module and the second inspection module to be properly aligned with the support base, thereby achieving an optical path configuration in which the two second optical paths are located outside the two first optical paths and do not intersect with each other. This allows for simultaneous optical inspection of the two first sides and two second sides of the web at once, thereby reducing the time required for the inspection process and further helping to reduce the overall size of the inspection equipment.

To further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, such description and drawings are only used to illustrate the present invention and are not intended to limit the scope of protection of the present invention.

100: Single-station optical testing equipment

1: First detection module

11: First light receiving unit

111: First lens group

112: First Camera

113: First linear slide rail

12: First Light Source

13: First optical transmission component

131: First Spectroscope

132: First front reflector

133: First rear reflector

2: Second detection module

21: Second light receiving unit

211: Second lens group

212: Second Camera

213: Second linear slide rail

22: Second light source

23: Second optical transmission component

231: Second Spectroscope

232: Second front reflector

233: Second mid-section reflector

234: Second rear reflector

3: Supporting base

31: Bracket

32: Detection chamber

321: Configuration Space

322: Storage Area

323: First light-transmitting area

324: Second light-transmitting area

325: Partition

D1: First Direction

D2: Second Direction

D3: Third direction

L1: First Light

L2: Second ray

P1: First optical path

P2: Second optical path

σ1: sharp angle

σ2: sharp angle

R1: First height block

R2: Second height block

R3: Third height block

M: Sheet

M1: First side

M2: Second side

Figure 1 is a schematic three-dimensional diagram of a single-station optical inspection device according to an embodiment of the present invention.

Figure 2 is a three-dimensional diagram of Figure 1 from another perspective.

Figure 3 is a partial three-dimensional cross-sectional schematic diagram of a single-station optical inspection device according to an embodiment of the present invention (I).

Figure 4 is a partial three-dimensional cross-sectional schematic diagram of a single-station optical inspection device according to an embodiment of the present invention (Part 2).

Figure 5 is a schematic top view of Figure 1.

Figure 6 is a schematic cross-sectional view taken along line VI-VI of Figure 5.

Figure 7 is a partially enlarged schematic diagram of Figure 6.

Figure 8 is a schematic cross-sectional view taken along line VIII-VIII of Figure 5.

Figure 9 is a partially enlarged schematic diagram of Figure 8.

The following describes the implementation of the "single-station optical inspection equipment" disclosed in this invention through specific embodiments. Those skilled in the art will appreciate the advantages and benefits of this invention from the disclosure herein. This invention may be implemented or applied through various other specific embodiments, and the details herein may be modified and altered based on different perspectives and applications without departing from the spirit of this invention. Furthermore, the accompanying figures are for schematic illustration only and are not intended to be drawn to actual size. This is to be noted. The following embodiments further illustrate the relevant technical aspects of this invention, but the disclosure is not intended to limit the scope of protection of this invention.

It should be understood that while terms such as "first," "second," and "third" may be used herein to describe various components or signals, these components or signals should not be limited by these terms. These terms are primarily used to distinguish one component from another, or one signal from another. Furthermore, the term "or" as used herein may include any one or more combinations of the associated listed items, as appropriate.

Please refer to Figures 1 to 9, which illustrate an embodiment of the present invention. As shown in Figures 1 to 4, this embodiment discloses a single-station optical inspection apparatus 100 for inspecting two first side surfaces M1 and two second side surfaces M2 of a web M. In this embodiment, the web M is rectangular; that is, the circumferential side surface of the web M is described as comprising only the two first side surfaces M1 and the two second side surfaces M2, but the present invention is not limited to this. Furthermore, the single-station optical inspection apparatus 100 inspects the circumferential side surface of the web M at once, eliminating the need for multi-station inspection.

As shown in Figures 4 to 6, the single-station optical inspection equipment 100 includes a supporting base 3, a first inspection module 1 mounted on the supporting base 3, and a second inspection module 2 mounted on the supporting base 3. The supporting base 3 includes a bracket 31 and an inspection chamber 32 connected to the bracket 31. In this embodiment, the supporting base 3 is primarily functionally differentiated, and the bottom of the inspection chamber 32 is connected to a side top portion of the bracket 31.

Specifically, the detection chamber 32 is a generally hollow rectangular frame, defining a surrounding space 321. The detection chamber 32 includes a storage area 322 for placing the material M, and a first light-transmitting area 323 and a second light-transmitting area 324 connected to the space 321. Furthermore, with the exception of the storage area 322, the first light-transmitting area 323, and the second light-transmitting area 324, the detection chamber 32 is preferably light-shielded to prevent external light from entering the space 321 and affecting the detection results.

In this embodiment, the top of the detection chamber 32 is open. The storage area 322 is located approximately at the top of the detection chamber 32. The first light-transmitting area 323 is an opening located at the bottom of the detection chamber 32. The second light-transmitting area 324 is another opening located on the side of the detection chamber 32 and adjacent to the bracket 31. However, the present invention is not limited to this. For example, in other embodiments not shown in the present invention, the first light-transmitting area 323 and/or the second light-transmitting area 324 may also be a light-transmitting component.

To put it another way, the storage area 322 and the first light-transmitting area 323 are arranged along a first direction D1, while the second light-transmitting area 324 is arranged in a second direction D2 perpendicular to the first direction D1. Furthermore, when the material M is placed in the storage area 322, the two first side surfaces M1 are located on opposite sides of the material M along the second direction D2, and the two second side surfaces M2 are located on opposite sides of the material M along a third direction D3 perpendicular to the first and second directions D1 and D2.

Furthermore, the detection chamber 32 preferably further includes two partitions 325 located within the configuration space 321, with each partition 325 being perpendicular to the third direction D3. The two partitions 325 are spaced apart from each other, and the storage area 322 is located on top of the two partitions 325 in this embodiment, but the present invention is not limited thereto.

As shown in Figures 4, 6, and 7, the first detection module 1 includes a first light receiving unit 11 mounted on the bracket 31, two first light sources 12 arranged facing the storage area 322, and a first light transmission assembly 13 located within the arrangement space 321. The first light receiving unit 11 faces the first light-transmitting area 323 along the first direction D1, and the two first light sources 12 are configured to emit two first light beams L1 toward the two first side surfaces M1, respectively. The first light transmission assembly 13 defines two first optical paths P1, each of which travels from the arrangement space 321 through the first light-transmitting area 323 to reach the first light receiving unit 11. In other words, the first light transmission assembly 13 is configured to transmit the two first light beams L1 reflected from the two first side surfaces M1 along the two first optical paths P1 to the first light receiving unit 11.

Furthermore, as shown in Figures 4, 8, and 9, the second detection module 2 includes a second light receiving unit 21 mounted on the bracket 31, two second light sources 22 arranged facing the storage area 322, and a second light transmission assembly 23 located within the arrangement space 321. The second light receiving unit 21 faces the second light-transmitting area 324 along the second direction D2. The two second light sources 22 are configured to emit two second light beams L2 toward the two second side surfaces M2, respectively. The second light transmission assembly 23 defines two second optical paths P2, each of which travels from the arrangement space 321 through the second light-transmitting area 324 to the second light receiving unit 21. In other words, the second optical transmission component 23 can be used to transmit the two second light rays L2 reflected from the two second side surfaces M2 along two second optical paths P2 to the second light receiving unit 21.

It should be noted that the two second optical paths P2 are defined outside the two first optical paths P1 and do not intersect with each other. In this embodiment, the two first optical paths P1 are primarily arranged along the first direction D1 and the second direction D2, while the two second optical paths P2 are generally arranged along the inner wall of the detection cavity 32. This ensures that the two first optical paths P1 and the two second optical paths P2 do not interfere with each other within the limited configuration space 321.

Furthermore, in this embodiment, the detection chamber 32 can further utilize two partitions 325 to effectively separate the two first optical paths P1 from the two second optical paths P2, but the present invention is not limited thereto. For example, in other embodiments not shown, the two partitions 325 can be omitted or replaced with other components based on actual needs.

As described above, in this embodiment, the single-station optical inspection equipment 100 utilizes the first inspection module 1 and the second inspection module 2 to be properly aligned with the supporting base 3, thereby achieving an optical path configuration in which the two second optical paths P2 are located outside the two first optical paths P1 and do not intersect with each other. This allows simultaneous optical inspection of the two first side surfaces M1 and the two second side surfaces M2 of the web M at once, thereby reducing the time required for the inspection process and further helping to reduce the overall size of the inspection equipment.

It should be noted that, provided the single-station optical inspection device 100 meets the aforementioned requirements, its specific component configuration can be adjusted based on actual needs. For example, as long as the support base 3 forms a configuration space 321, and includes the storage area 322 for the web M, and the first and second light-transmitting areas 323 and 324 connected to the configuration space 321, the structure of the support base 3 can differ from that shown in the figures of this embodiment. Furthermore, to facilitate understanding of this embodiment, the following description will use one preferred component configuration for both the first inspection module 1 and the second inspection module 2; the present invention is not limited to this configuration.

As shown in Figures 1, 3, 7, and 9, the first light receiving unit 11 includes a first lens assembly 111 facing the first light-transmitting area 323, a first camera 112 mounted and fixed to the first lens assembly 111, and a first linear slide 113. The first camera 112 is located on a side of the first lens assembly 111 away from the first light-transmitting area 323, and the first lens assembly 111 and the first camera 112 are movably fixed to the bracket 31 via the first linear slide 113. In other words, the first lens assembly 111 and the first camera 112 can move relative to the first light-transmitting area 323 along the first direction D1 via the first linear slide 113.

Two first light sources 12 are mounted in the detection chamber 32 and are located on opposite sides of the storage area 322 along the second direction D2, facing each other. In other words, the two first light sources 12 are aligned with the two first sides M1 of the web M along the second direction D2.

In this embodiment, the first optical transmission assembly 13 includes two first beam splitters 131, two first front-end reflectors 132, and two first rear-end reflectors 133. The two first beam splitters 131, the two first front-end reflectors 132, and the two first rear-end reflectors 133 are all elongated (e.g., rectangular) and together define two independent, non-intersecting first optical paths P1. In other words, as long as two first optical paths P1 are defined that transmit the two first light rays L1 reflected from the two first side surfaces M1 to the first light receiving unit 11, the specific component configuration of the first optical transmission assembly 13 can be adjusted based on actual needs.

Specifically, each first optical path P1 is defined by one first beam splitter 131, one first front-end reflector 132, and one first rear-end reflector 133. In this embodiment, the two first optical paths P1 (or their corresponding components) are preferably arranged in mirror symmetry, but the present invention is not limited thereto. Furthermore, in this embodiment, the long axes of the two first beam splitters 131, the two first front-end reflectors 132, and the two first rear-end reflectors 133 are illustrated as being parallel to the third direction D3, but the present invention is not limited thereto.

The two first beam splitters 131 are respectively adjacent to and located between the two first light sources 12. In other words, the two first light sources 12 and the two first beam splitters 131 are arranged in a row along the second direction D2. A portion of the first light L1 emitted by each first light source 12 (e.g., 40%-60%) passes through the adjacent first beam splitter 131 along the second direction D2 and then illuminates the corresponding first side surface M1.

The two first front-stage reflective mirrors 132 are respectively adjacent to and below the two first beam splitters 131. In this embodiment, the normal direction of each first beam splitter 131 preferably intersects perpendicularly with the normal direction of the adjacent first front-stage reflective mirror 132 within the detection chamber 32. Furthermore, the projection space formed by each first beam splitter 131 along the first direction D1 completely covers the adjacent first front-stage reflective mirror 132, but the present invention is not limited to this.

The two first rear-stage reflective mirrors 133 are located below the storage area 322. In this embodiment, the two first rear-stage reflective mirrors 133 are adjacent to the storage area 322 and are disposed adjacent to each other. The width of the two first rear-stage reflective mirrors 133 in the second direction D2 is preferably smaller than the width of the web M in the second direction D2. This concentrates the two first optical paths P1, thereby facilitating the use of a smaller and higher-resolution first camera 112.

Furthermore, the two first front reflectors 132 and the two first rear reflectors 133 are arranged in a row along the second direction D2, and are preferably disposed between the two partitions 325. In this embodiment, the normal direction of each first front reflector 132 is preferably parallel to the normal direction of the adjacent first rear reflector 133, and the projection space formed by each first front reflector 132 along the second direction D2 completely covers the adjacent first rear reflector 133, but the present invention is not limited to this.

The second light receiving unit 21 includes a second lens assembly 211 facing the second light-transmitting area 324, a second camera 212 mounted and fixed to the second lens assembly 211, and a second linear slide 213. The second camera 212 is located on a side of the second lens assembly 211 away from the second light-transmitting area 324. The second lens assembly 211 and the second camera 212 are movably fixed to the bracket 31 via the second linear slide 213. In other words, the second lens assembly 211 and the second camera 212 can move relative to the first light-transmitting area 323 along the second direction D2 via the second linear slide 213.

Two second light sources 22 are mounted in the detection chamber 32 and are located on opposite sides of the storage area 322 along the third direction D3, facing each other. In other words, the two second light sources 22 are aligned with the two second sides M2 of the web M along the third direction D3.

In this embodiment, the second optical transmission assembly 23 includes two second beam splitters 231, two second front-end reflectors 232, two second middle-end reflectors 233, and two second rear-end reflectors 234. The two second beam splitters 231, the two second front-end reflectors 232, the two second middle-end reflectors 233, and the two second rear-end reflectors 234 are all elongated (e.g., rectangular) and collectively define two independent, non-intersecting second optical paths P2. In other words, as long as two second optical paths P2 are defined that transmit the two second light rays L2 reflected from the two second side surfaces M2 to the second light receiving unit 21, the specific component configuration of the second optical transmission assembly 23 can be adjusted based on actual needs.

Specifically, each second optical path P2 is defined by a second beam splitter 231, a second front reflector 232, a second middle reflector 233, and a first rear reflector 133. In this embodiment, the two second optical paths P2 (or their corresponding components) are preferably arranged in mirror symmetry, but the present invention is not limited thereto. Furthermore, in this embodiment, the long axes of the two second beam splitters 231 are described as being parallel to the second direction D2, while the long axes of the two second front reflectors 232, the two second middle reflectors 233, and the two second rear reflectors 234 are described as being parallel to the first direction D1, but the present invention is not limited thereto.

The two second beam splitters 231 are respectively adjacent to and located between the two second light sources 22. In other words, the two second light sources 22 and the two second beam splitters 231 are arranged in a row along the third direction D3. A portion (e.g., 40% to 60%) of the second light L2 emitted by each second light source 22 passes through the adjacent second beam splitter 231 along the third direction D3 and then illuminates the corresponding second side surface M2.

The two second front-stage reflective mirrors 232 are respectively adjacent to and below the two second beam splitters 231. In this embodiment, the projection space formed by each second beam splitter 231 along the first direction D1 completely covers the adjacent second front-stage reflective mirror 232, but the present invention is not limited to this.

In addition, any of the second beam splitter mirrors 231 and the virtual extension area corresponding to the second front-stage reflective mirror 232 intersect with each other in the detection cavity 32 and form a sharp angle σ1 ranging from 30 degrees to 60 degrees.

The two second middle reflectors 233 are adjacent to the two second front reflectors 232 and located on opposite sides of the second light-transmitting area 324. The two second front reflectors 232 and the two second rear reflectors 234 are preferably disposed outside the two partitions 325. In this embodiment, the projection space formed by each second front reflector 232 along the second direction D2 completely covers the adjacent second middle reflector 233, but the present invention is not limited to this.

Furthermore, the virtual extension areas of any second front-segment reflector 232 and the corresponding second middle-segment reflector 233 intersect within the detection chamber 32, forming a sharp angle σ2 between 30 and 60 degrees. In other words, any second beam splitter 231, the corresponding second front-segment reflector 232, and the corresponding second middle-segment reflector 233 are arranged in a triangle, and the normals of any second beam splitter 231 and the corresponding second middle-segment reflector 233 intersect perpendicularly within the detection chamber 32.

The two second rear-stage reflectors 234 are located between the two second middle-stage reflectors 233 and within the second light-transmitting area 324. The two second rear-stage reflectors 234 are positioned adjacent to each other to focus the two second optical paths P2, thereby facilitating the use of a smaller and higher-resolution second camera 212.

Furthermore, the two second middle-segment reflectors 233 and the two second rear-segment reflectors 234 are arranged in a row along the third direction D3. In this embodiment, the normal direction of each second middle-segment reflector 233 is preferably parallel to the normal direction of the adjacent second rear-segment reflector 234, and the projection space formed by each second middle-segment reflector 233 along the third direction D3 completely covers the adjacent second rear-segment reflector 234, but the present invention is not limited to this.

To put it another way, the two second front-section reflective mirrors 232 are respectively disposed on two inner walls of the detection chamber 32 that face each other, while the two second middle-section reflective mirrors 233 are respectively disposed at two corners of the detection chamber 32.

Specifically, the two first light sources 12, the two first spectroscopes 131, the two second light sources 22, and the two second spectroscopes 231 are all arranged within the detection chamber 32 (in the first direction D1) in a first height range R1. Furthermore, the two first front-end reflectors 132 and the two first rear-end reflectors 133 are all arranged within the detection chamber 32 (in the first direction D1) in a second height range R2, which is lower than the first height range R1. The two second front-end reflectors 232, the two second middle reflectors 233, and the two second rear-end reflectors 234 are also arranged within the detection chamber 32 (in the first direction D1) in a third height range R3, which may be lower than or at least partially overlap with the second height range R2.

As described above, the single-station optical inspection device 100 in this embodiment employs the aforementioned configuration, enabling the second inspection module 2 to be further configured within the inspection chamber 32 dimensions suitable for the first inspection module 1, thereby effectively reducing the overall size of the single-station optical inspection device 100.

In addition, although the first detection module 1 and the second detection module 2 are described in the above configuration in this embodiment, they can be adjusted and varied according to actual needs. For example, in other embodiments not shown in the present invention, the two first spectroscopes 131 and the two second spectroscopes 231 may be omitted, and the two first light sources 12 and the two second light sources 22 are positioned higher than the sheet M and emit two first light rays L1 and two second light rays L2 toward the two first side surfaces M1 and the two second side surfaces M2 of the sheet M, respectively. The two first light rays L1 and the two second light rays L2 are reflected by the two first side surfaces M1 and the two second side surfaces M2, respectively, to form sharp angles of incidence and reflection. The first light transmission assembly 13 and the second light transmission assembly 23 are then adjusted accordingly to transmit the light to the first light receiving unit 11 and the second light receiving unit 21.

[Technical effects of the embodiments of the present invention]

In summary, the single-station optical inspection equipment disclosed in the embodiments of the present invention utilizes the first and second inspection modules properly aligned with the support base to achieve an optical path configuration in which the two second optical paths are located outside the two first optical paths and do not intersect with each other. This allows simultaneous optical inspection of both first and second sides of the web at once, thereby reducing the time required for the inspection process and further minimizing the overall size of the inspection equipment.

The contents disclosed above are merely preferred feasible embodiments of the present invention and do not limit the patent scope of the present invention. Therefore, any equivalent technical variations made using the contents of the description and drawings of the present invention are included in the patent scope of the present invention.

12: First Light Source

13: First optical transmission component

131: First Spectroscope

132: First front reflector

133: First rear reflector

22: Second light source

23: Second optical transmission component

231: Second Spectroscope

232: Second front reflector

233: Second mid-section reflector

234: Second rear reflector

32: Detection chamber

321: Configuration Space

322: Storage Area

323: First light-transmitting area

324: Second light-transmitting area

325: Partition

D1: First Direction

D2: Second Direction

D3: Third direction

L1: First Light

L2: Second ray

P1: First optical path

P2: Second optical path

M: Sheet

M1: First side

M2: Second side

Claims (10)

A single-station optical inspection device for inspecting two first sides and two second sides of a web comprises: A supporting base comprising: A bracket; and A detection chamber connected to the bracket and defining a configuration space; wherein the detection chamber comprises a storage area for placing the web, and a first light-transmitting area and a second light-transmitting area connected to the configuration space; wherein the storage area and the first light-transmitting area are arranged along a first direction, while the second light-transmitting area is arranged in a second direction perpendicular to the first direction; wherein the two first sides are located on opposite sides of the web along the second direction, and the two second sides are located on opposite sides of the web along a third direction perpendicular to the first and second directions; A first inspection module comprises: A first light receiving unit mounted on the bracket and facing the first light-transmitting area in the first direction; Two first light sources disposed facing the storage area; wherein the two first light sources are configured to emit two first light rays respectively toward the two first sides; and A first light transmission assembly located within the configuration space and defining two first light paths, each of which passes from the configuration space through the first light-transmitting area to the first light receiving unit; The first light transmission assembly is configured to transmit the two first light rays reflected from the two first sides along the two first light paths to the first light receiving unit; and A second detection module comprising: A second light receiving unit mounted on the bracket and facing the second light-transmitting area in the second direction; Two second light sources disposed facing the storage area; wherein the two second light sources are configured to emit two second light rays respectively toward the two second sides; and A second optical transmission assembly is positioned within the configuration space and defines two second optical paths, each of which extends from the configuration space through the second light-transmitting region to the second light receiving unit. The two second optical paths are positioned outside the two first optical paths and do not intersect with each other. The second optical transmission assembly is configured to transmit the two second light rays reflected from the two second side surfaces along the two second optical paths to the second light receiving unit. The single-station optical inspection device as described in claim 1, wherein two first light sources are installed in the inspection cavity, and the two first light sources are respectively located on opposite sides of the storage area along the second direction and facing each other; two second light sources are installed in the inspection cavity, and the two second light sources are respectively located on other opposite sides of the storage area along the third direction and facing each other. The single-station optical inspection apparatus of claim 2, wherein the first optical transmission assembly comprises: Two first beam splitters, respectively adjacent to and located between the two first light sources; Two first front-end reflectors, respectively adjacent to and located below the two first beam splitters; and Two first rear-end reflectors, located below the object storage area; The two first beam splitters, the two first front-end reflectors, and the two first rear-end reflectors collectively define two independent and non-intersecting first optical paths. The single-station optical inspection device as described in claim 3, wherein the two first light sources and the two first spectrometers are arranged in a row along the second direction, and the two first front-end reflectors and the two first rear-end reflectors are arranged in a row along the second direction. The single-station optical inspection equipment as described in claim 3, wherein the two first rear-end reflective mirrors are adjacent to the placement area, and the width of the two first rear-end reflective mirrors in the second direction is smaller than the width of the sheet in the second direction. The single-station optical inspection apparatus of claim 3, wherein the second light transmission assembly comprises: Two second spectroscopes, each adjacent to and located between the two second light sources; Two second front-end reflectors, each adjacent to and located below the two second spectroscopes; Two second middle-end reflectors, each adjacent to and located on opposite sides of the second light-transmitting region; and Two second rear-end reflectors, each located between the two second middle-end reflectors and located in the second light-transmitting region. The two second beam splitters, the two second front-end reflectors, the two second middle-end reflectors, and the two second rear-end reflectors collectively define two independent and non-intersecting second optical paths. The single-station optical inspection equipment as described in claim 6, wherein the two first light sources, the two first spectrometers, the two second light sources, and the two second spectrometers are all arranged in a first height block in the inspection chamber; the two first front-end reflectors and the two first rear-end reflectors are all arranged in a second height block in the inspection chamber, which is lower than the first height block. The single-station optical inspection device as described in claim 6, wherein any second spectrometer and the virtual extended area corresponding to the second front-segment reflector intersect with each other within the inspection cavity and form a sharp angle between 30 degrees and 60 degrees; any second front-segment reflector and the virtual extended area corresponding to the second middle-segment reflector intersect with each other within the inspection cavity and form a sharp angle between 30 degrees and 60 degrees. The single-station optical inspection equipment as described in claim 6, wherein any one of the second spectrometers, the corresponding second front-segment reflector, and the corresponding second middle-segment reflector are arranged in a triangle shape. A single-station optical inspection device for inspecting two first sides and two second sides of a web, comprising: A supporting base defining a configuration space, the supporting base having a storage area for the web, and a first light-transmitting area and a second light-transmitting area connected to the configuration space; wherein the storage area and the first light-transmitting area are arranged along a first direction, and the second light-transmitting area is arranged in a second direction perpendicular to the first direction; wherein the two first sides are located on opposite sides of the web along the second direction, and the two second sides are located on opposite other sides of the web along a third direction perpendicular to the first and second directions; A first inspection module comprising: A first light receiving unit mounted on the supporting base and facing the first light-transmitting area; Two first light sources are disposed facing the storage area; the two first light sources are configured to emit two first light beams toward the two first sides, respectively; and A first light transmission assembly is located within the configuration space and defines two first light paths, each of which travels from the configuration space through the first light-transmitting area to the first light receiving unit; The first light transmission assembly is configured to transmit the two first light beams reflected from the two first sides along the two first light paths to the first light receiving unit; and A second detection module comprises: A second light receiving unit mounted on the supporting base and facing the second light-transmitting area; Two second light sources are disposed facing the storage area; the two second light sources are configured to emit two second light beams toward the two second sides, respectively; and A second optical transmission assembly is positioned within the configuration space and defines two second optical paths, each of which extends from the configuration space through the second light-transmitting region to the second light receiving unit. The two second optical paths are positioned outside the two first optical paths and do not intersect with each other. The second optical transmission assembly is configured to transmit the two second light rays reflected from the two second side surfaces along the two second optical paths to the second light receiving unit.