TW202111370A - Optical module - Google Patents

Abstract

Optical module are disclosed. The optical module includes a first barrel and a second barrel. The first barrel is provided with at least one lens and a neck portion, and the first barrel has an outer diameter. The second barrel is provided with a contact element, and the second barrel has an inner diameter. The inner diameter of the second barrel is greater than the outer diameter of the first barrel, wherein the contact element contacts the first barrel.

Description

Optical module

The present invention generally relates to the field of optics, and specifically refers to optical modules.

The object to be tested is projected onto the sensor chip of the sensor camera through the lens module, and the deflection of the optical axis relative to the sensor chip will cause aberration and distortion of the detected image.

For example, for high-resolution detection (such as 4K resolution), the manufacturing process of optical components, the gap between the size of the optical component and the object to be measured is large, the required viewing angle is large (such as 180 degree rotation), and the optical axis is slightly small. Deviations will cause the image to lose focus.

In one embodiment, the present invention relates to an optical module, which includes a first sleeve, at least one lens is installed in the first sleeve, and the first sleeve has a neck, wherein the first sleeve The barrel has an outer diameter; a second sleeve including an abutting element, wherein the second sleeve has an inner diameter, the inner diameter of the second sleeve is larger than the outer diameter of the first sleeve, wherein The abutting member contacts the first sleeve.

It should be understood that both the foregoing [Summary of the Invention] and the following [Embodiments] are only illustrative and explanatory and do not necessarily limit the present invention. The drawings incorporated into the specification and constituting a part of the specification illustrate the subject matter of the present invention. [Summary of the Invention], [Embodiment] and the drawings are used to explain the principle of the present invention.

Reference will now be made in detail to several examples, including examples of exemplary implementations of optical modules. In any practicable situation, similar or identical element symbols may be used in the drawings and may indicate similar or identical functionality. For illustration purposes only, the drawings depict exemplary embodiments of the disclosed system and/or methods used. Those who are familiar with the technology will easily recognize from the following description, and can adopt alternative exemplary embodiments of the structure and method illustrated in this article without departing from the principle described in this article.

In various aspects, the present invention provides an adjustable optical module so that the optical axis can be adjusted after the optical module is installed on the sensor camera.

FIG. 1 shows an assembly diagram of an optical module 100 of the present invention.

The optical module 100 includes a sleeve 110, a sleeve 120, a resisting member 140, a fixing member 130, and a lens.

FIG. 2 is an exploded view of the optical module 100 shown in FIG. 1.

The optical module 100 includes a sleeve 110, which may also be referred to as an inner sleeve. A lens module is installed in the sleeve 110 and includes at least one lens 111. When the sleeve 110 is assembled with the external sensor camera, the optical axis of the lens module is aligned with the sensor chip on the sensor camera, so that the image received by the lens from the outside is transmitted to the sensor chip on the sensor camera.

There is a neck 112 on the sleeve 110, which can be an annular recess, or one or more recesses.

The optical module 100 may include a sleeve 120 that includes a resisting member 140. The inner diameter of the sleeve 120 is greater than the inner diameter of the sleeve 110, so that the sleeve 120 can be assembled with the sleeve 110, and the abutting member 140 contacts the sleeve 110 to adjust the angle between the sleeve 110 and the sleeve 120, thereby adjusting The optical axis of the lens module.

In one embodiment, the inner diameter of the sleeve 120 is greater than the inner diameter of the sleeve 110 by at least 0.1 mm, for example, about 0.2 mm, about 0.3 mm, about 0.4 mm, or about 0.5 mm.

In one embodiment, the sleeve 120 may include at least two fixing members 130, such as screws, so that the sleeve 110 and the sleeve 120 are mutually fixed when assembled. The fixing member 130 may further provide a fulcrum for adjusting the angle of the sleeve 110.

In one embodiment, the sleeve 120 may include an urging member 150, and the urging member 150 allows the sleeve 110 and the sleeve 120 to be more firmly held when assembled.

FIG. 3 shows a cross-sectional view of the optical module 100 and the sensor camera 210 before being assembled. The optical module 100 and the sensor camera 210 can be assembled along the direction of the arrow Z.

4A shows a cross-sectional view of the optical module 100 and the sensor camera 210 after being assembled. The sleeve 120 and the sensor camera 210 can be assembled via a threaded set that cooperates with each other. Generally speaking, they can be assembled via a C-mount, but it is not limited to this.

After the optical module 100 and the sensor camera 210 are assembled in the manner described above, the optical axis of the optical module 100 should be aligned with the sensor chip 220 on the sensor camera 210 or should be perpendicular to the sensor chip 220. However, due to the tolerance of the thread set, the deviation of the sleeve 110 and/or the sensor chip 220 during the manufacturing process, the deviation caused by falling, collision or shaking after installation, or other reasons, the optical module 100 is installed The optical axis of the lens cannot be perpendicular to the sensor chip on the sensor camera 210 or the optical axis of the lens cannot fall on the designed path after the optical module 100 is installed, which results in the sensor chip being sensed by the lens module The image of is aberrated (as shown in the upper left box). In other words, the obtained image (such as the image shown in the upper left box) may be blurred compared to the actual object in front of the optical module 100.

4B shows a cross-sectional view of the optical module 100 and the sensor camera 210 after being assembled.

The difference between FIG. 4B and FIG. 4A is that the optical axis of the lens module or the optical module 100 is adjusted by the interference member 140 so that the optical axis 113 of the optical module 100 or the lens module is perpendicular to the sensing surface of the sensing chip 220. Or make the optical axis 113 of the optical module 100 overlap the normal 221 of the sensing surface of the sensing chip 220, or make the optical axis 113 of the optical module 100 fall on the designed path.

As shown in the upper left box, the sensed image is relatively clear compared to the image in the upper left box of FIG. 4A.

Fig. 5A shows a cross-sectional view of the conflicting member according to other embodiments of the present application.

The structure of FIG. 5A is similar to the structure shown in FIG. 2, except that the structure shown in FIG. 2 uses only one resisting member 140, while the structure shown in FIG. 5A uses two resisting members 140' and the corresponding sleeve 120' .

The interference member 140' may be arranged on the opposite side. The resisting member 140' may be configured in other positions different from the opposite side.

The resisting member 140 ′ can adjust the relative position (for example, the included angle) of the sleeve 120 ′ and the sleeve 110 in a one-dimensional direction (for example, the Y direction). At least one of the two abutting members 140 ′ can contact the sleeve 110.

In other embodiments, the abutting member 140' on one side may contact the sleeve 110, causing the sleeve 110 to be offset or deflected, and the abutting member 140' on the opposite side may not contact the sleeve 110, but may be separated from the sleeve 110. A gap.

When the optical axis adjustment is completed, the image shown in the upper left box of Figure 4B can be obtained.

The structure of FIG. 5B is similar to the structure shown in FIG. 5A, except that the structure shown in FIG. 5A uses only two resisting members 140', while the structure shown in FIG. 5B uses three resisting members 140" and the corresponding sleeves. Tube 120''.

The abutting members 140" are configured to have an angle of about 120 degrees with each other, and the abutting members 140" can be configured at other positions where the angles are different from each other.

The interference member 140" can adjust the relative position (for example, the included angle) of the sleeve 120" and the sleeve 110 in a two-dimensional direction (for example, the XY plane). At least one of the three abutting members 140 ″ contacts the sleeve 110.

In other embodiments, one side of the abutting member 140" does not contact the sleeve 110, but has a gap with the sleeve 110, and the other two abutting members contact the sleeve 110, causing the sleeve 110 to shift or deflection.

When the optical axis adjustment is completed, a relatively clear image can be obtained as shown in the upper left box of Figure 4B.

The structure of FIG. 5C is similar to the structure shown in FIG. 5B, except that the structure shown in FIG. 5B uses only three resisting members 140", while the structure shown in FIG. 5C uses four resisting members 140"' and corresponding The sleeve is 120'''.

The abutting members 140"' are configured to include an angle of about 90 degrees with each other, and the abutting members 140" can be configured at other positions where the included angles are different from each other.

The abutting member 140"' can adjust the relative position (for example, the included angle) of the sleeve 120 and the sleeve 110 by 360 degrees in a two-dimensional direction (for example, in the XY plane). At least one of the four resisting members 140 ″′ contacts the sleeve 110.

In other embodiments, two of the resisting members 140"" do not contact the sleeve 110, but have a gap with the sleeve 110, and the other two resisting members 140"" contact the sleeve 110, so that the sleeve 110 is in contact with the sleeve 110. The barrel 110 is deflected or deflected.

When the optical axis adjustment is completed, the image shown in the upper left box of Figure 4B can be obtained.

The interference members 140, 140', 140", 140''' can be manually controlled, or they can be electrically connected to a controller (not shown) to control the interference members 140, 140', 140", 140' via electrical signals '', and adjust the relative position (such as the included angle) of the sleeve 120, 120', 120", 120'" and the sleeve 110.

Although not shown in the specification, other embodiments of this case may include more identical or similar conflicting elements 140.

In other embodiments, the sensing chip 220 reads the external image through the lens module, and the sensed image is judged to be blurred, and the resisting elements 140, 140', 140", 140" can be automatically controlled by the controller. ', make the optical axis 113 of the optical module 100 or the lens module perpendicular to the sensing surface of the sensing chip 220, or make the optical axis 113 of the optical module 100 and the normal line 221 of the sensing surface of the sensing chip 220 overlap, Or make the optical axis 113 of the optical module 100 fall on the designed path.

In one embodiment, the abutting member 140 may be an eccentric ring (not shown). By contacting at least a part of the eccentric ring with the neck of the sleeve 110, the relative position (for example, the included angle) of the sleeve 120 and the sleeve 110 can be adjusted in a two-dimensional direction.

In other embodiments, a part of the eccentric ring may contact the sleeve 110 to cause offset or deflection of the sleeve 110, and the other part of the eccentric ring may not contact the sleeve 110 and have a gap with the sleeve 110.

When the optical axis adjustment is completed, the image eccentric ring shown in the upper left box of FIG. 4B can be manually adjusted, or it can be electrically connected to a motor to electrically adjust the optical axis of the optical module or lens module. Make the optical axis of the optical module or lens module perpendicular to the sensing surface of the sensor chip, or make the optical axis of the optical module overlap the normal of the sensing surface of the sensor chip, or make the optical axis of the optical module fall On the path of design.

FIG. 6 is a schematic diagram of an optical module 600 according to some other embodiments of the present application. The optical module 600 is equipped with a lens module and a lens barrel 610. The optical module 600 can be combined with the sensor camera 210 through the thread 630.

During the assembly process of the optical module 600 and the sensor camera 210, the assembly can be performed while performing optical focusing (or can be called active focusing). The optical axis adjustment procedure is performed at the same time during the focusing process, so that the optical axis 613 of the optical module 600 or the lens module falls on the designed path as much as possible, and the lens barrel 610 is further fixed by glue or screw locking. For sensor cameras.

However, the assembling process may be due to uneven glue volume, poor control of the curing process, or deviation caused by falling, collision or shaking after installation, which may cause the optical axis 613 of the lens barrel 610 or the lens module to be relatively sensitive to the sensor chip 220. The normal line 221 of the survey surface is offset or deflected. However, since the lens barrel 610 has been fixed to the sensor camera, the optical axis 613 of the optical module 600 or the lens module cannot be adjusted. Even if it can be adjusted, it may require a relatively high cost.

FIG. 7A is a cross-sectional view of an optical module 700 and a sensor camera 210 assembled in another embodiment. The optical module 700 is configured with a lens module and a lens barrel 710. The optical module 700 also has a thread 730 and a wedge-shaped transparent gasket 720. The thickness of the wedge-shaped transparent gasket 720 is not uniform, and the thickness on one side is larger than the other side. The thickness of the wedge-shaped transparent gasket 720 gradually decreases from one end to the other end. The thickness of the wedge-shaped transparent gasket 720 is at most one thread pitch and at least zero.

Since the thread 730 itself may have tolerances or matching tolerances with the sensing camera 210, the optical module 700 or the optical axis 713 of the lens module 700 or the optical axis 713 of the lens module after the installation of the wedge-shaped transparent gasket 720 fails to match the sensing chip. The normal line 221 of the survey surface overlaps. The wedge-shaped transparent washer 720 is used to compensate for the tolerance of the thread group.

After the optical module 700 and the sensor camera are assembled, the lens barrel 710 is further rotated, and the wedge-shaped transparent gasket 720 rotates on the thread with the lens barrel 710, so that the optical axis 713 of the optical module 700 or the lens module rotates accordingly The process produces rotation, and then adjusts the optical axis 713 of the optical module 700 or the lens module so that the optical axis 713 of the optical module 700 or the lens module is perpendicular to the sensing surface of the sensor chip 220, or the light of the optical module 700 The axis overlaps with the normal 221 of the sensing surface of the sensing chip, or the optical axis of the optical module falls on the designed path.

FIG. 7B is a cross-sectional view of an optical module and a sensor camera assembled according to another embodiment of the present application.

The optical module 700' has a lens barrel 710', an abutting member 140, a thread 730, and a wedge-shaped transparent washer 720.

Similar to the embodiment in FIG. 2, the interference member 140 can be used to adjust the optical axis 713 of the lens barrel 710 ′ or the lens module.

Similar to the embodiment of FIG. 7A, the wedge-shaped transparent washer 720 is used to compensate for the tolerance of the thread 730 itself, or the matching tolerance between the sensor camera 210.

When the optical module 700' is mounted on the sensing camera 210, the optical axis 713 of the optical module 700' or the lens module can be adjusted in two ways: rotating the optical module 700', with a wedge-shaped transparent spacer 720 To make up for the thread tolerance, adjust the sleeve 710' or the optical axis 713 of the lens module; it is also possible to adjust the optical axis 713 of the optical module 700' or the lens module by the interference member 140, so that the optical module 700' or the lens module can be adjusted The optical axis 713 of the group is perpendicular to the sensing surface of the sensor chip 220, or the optical axis of the optical module 700' is overlapped with the normal line 221 of the sensing surface of the sensor chip, or the optical axis of the optical module falls on the On the path of the design. In other words, when there is a tolerance in the conflicting member 140 or the wedge-shaped transparent gasket 720, it can be further compensated or compensated by the combination of the two components.

FIG. 8 is a cross-sectional view of an optical module and a sensor camera assembled according to another embodiment of the present application. The optical module 800 is equipped with a lens module and a lens barrel 810, and has threads 830, wherein the threads 830 are designed to be unevenly spaced. The minimum thread spacing is d, and the maximum spacing is d′.

After the optical module 800 and the sensor camera 210 are assembled, the lens barrel 810 is rotated through the unevenly spaced threads 830 on the optical module 800, so that the optical axis 813 of the lens module is shifted or deflected during the rotation process, and then adjusted The optical axis 813 of the optical module 800 or the lens module is such that the optical axis 813 of the optical module 800 or the lens module is perpendicular to the sensing surface of the sensor chip 220, or the optical axis of the optical module 800 and the sensor chip’s The normal line 221 of the sensing surface overlaps, or the optical axis of the optical module falls on the designed path.

In other embodiments, the optical module 800 designed as a lens barrel with unevenly spaced threads 830 can be combined with the embodiment of the optical module having the interference member 140 in FIG. 2. The optical module is installed on the sensing camera, and the optical axis of the lens module is preliminarily adjusted by rotating the lens barrel, and the optical axis of the optical module or lens module can be finely adjusted by the interference member 140 to make the optical module or lens The optical axis of the module is perpendicular to the sensing surface of the sensing chip, or the optical axis of the optical module 800 is overlapped with the normal of the sensing surface of the sensing chip, or the optical axis of the optical lens falls on a designed path.

The above description of the illustrated examples of the invention including the content set forth in the abstract is not intended to be exhaustive or limited to the precise form disclosed. Although specific embodiments and examples of the present invention are described herein for illustrative purposes, various equivalent modifications can be made without departing from the broader spirit and scope of the present invention.

These modifications can be made to the examples of the present invention based on the above detailed description. The terms used in the scope of the attached patent application should not be construed as limiting the present invention to the specific embodiments disclosed in the specification and the scope of the patent application. On the contrary, the category will be determined entirely by the scope of the following patent application, which will be understood according to the principle of interpretation of the claims created. Therefore, this specification and the drawings should be regarded as illustrative rather than restrictive.

100, 600, 700, 700', 800: optical module 110, 120, 120', 120'', 120''', 610, 710, 710', 810: sleeve 111: lens 112: neck 113, 613, 713, 813: optical axis 130: Conflict with fixed parts 140, 140', 140'', 140''': conflicting parts 150: Urgent Parts 210: sensor camera 220: sensor chip 221: Normal 630, 730, 830: thread 720: Wedge-shaped transparent gasket d, d': spacing

The novel features of the embodiments described herein are specifically described in the scope of the attached patent application. However, one can refer to the following description in conjunction with the following drawings to better understand these embodiments regarding both organization and operation methods: Figure 1 shows an assembly diagram of some embodiments of the optical module. Figure 2 shows an exploded view of some embodiments of the optical module. FIG. 3 shows a cross-sectional view of some embodiments before the optical module and the sensor camera are assembled. 4A shows a cross-sectional view of some embodiments after the optical module and the sensor camera are assembled. 4B shows a cross-sectional view of some embodiments after the optical module and the sensor camera are assembled. Fig. 5A shows a cross-sectional view of the conflicting member according to other embodiments of the present application. FIG. 5B shows a cross-sectional view of the conflicting member according to other embodiments of the present application. FIG. 5C shows a cross-sectional view of the conflicting member according to other embodiments of the present application. FIG. 6 shows a cross-sectional view of the optical module and the sensor camera according to other embodiments of the present application after being assembled. FIG. 7A shows a cross-sectional view of an optical module and a sensor camera according to another embodiment of the present application after being assembled. FIG. 7B shows a cross-sectional view of an optical module and a sensor camera according to another embodiment of the present application after being assembled. FIG. 8 shows a cross-sectional view of an optical module and a sensor camera according to other embodiments of the present application after being assembled.

100: Optical module

110: first sleeve

111: lens

130: Conflict with fixed parts

140: Fixed conflicting parts

Claims (12)

An optical module, which includes: A first sleeve, at least one lens is installed in the first sleeve, and the first sleeve has a neck, wherein the first sleeve has an outer diameter; A second sleeve comprising an abutting element, wherein the second sleeve has an inner diameter, the inner diameter of the second sleeve is greater than the outer diameter of the first sleeve, and the abutting element contacts the first sleeve A sleeve. Such as the optical module of claim 1, wherein the conflicting member includes at least one screw. For example, the optical module of claim 1, wherein the conflicting member includes two screws, and the two screws are arranged on opposite sides. For example, the optical module of claim 1, wherein the conflicting member includes three screws. For example, the optical module of claim 1, wherein the conflicting member includes four screws. The optical module of claim 1, wherein when the first sleeve and the second sleeve are assembled, there is a gap of about 0.2 between the outer diameter of the first sleeve and the inner diameter of the second sleeve mm. For the optical module of claim 1, the second sleeve further includes at least two fixing elements, wherein the fixing elements contact the neck, and wherein when the first sleeve and the second sleeve are assembled, the The fixing member makes the first sleeve and the second sleeve mutually fix. Such as the optical module of claim 1, wherein the conflicting member is an eccentric ring. Such as the optical module of claim 1, wherein the eccentric ring can be electrically connected to a motor to adjust the optical axis of the optical module. The optical module of claim 1, wherein the second sleeve further has a pressing member. The optical module of claim 1, wherein when the second sleeve is assembled with the first sleeve, the abutting member can adjust the angle between the first sleeve and the second sleeve by about 0.1 degree. Such as the optical module of claim 1, wherein the neck is a ring-shaped notch.

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