CN220399771U - Focusing system of lens assembly machine - Google Patents
Focusing system of lens assembly machine Download PDFInfo
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- CN220399771U CN220399771U CN202321545105.6U CN202321545105U CN220399771U CN 220399771 U CN220399771 U CN 220399771U CN 202321545105 U CN202321545105 U CN 202321545105U CN 220399771 U CN220399771 U CN 220399771U
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- 238000003384 imaging method Methods 0.000 description 18
- 238000000034 method Methods 0.000 description 13
- 238000004891 communication Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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- Lens Barrels (AREA)
- Optical Couplings Of Light Guides (AREA)
- Lenses (AREA)
Abstract
The utility model discloses a focusing system of a lens assembly machine, which comprises a light source, a shade pattern, a bearing seat, a light reflection element and an image capturing device. The mask pattern is disposed corresponding to the light source, and allows light of the light source to pass through. The bearing seat is used for loading the lens photosensitive element and the lens group. The light reflecting element is arranged corresponding to the shade pattern and is used for reflecting the light of the light source and allowing the reflected light generated by the light of the light source reflected by the lens photosensitive element to pass through. The light reflecting element is arranged between the bearing seat and the image capturing device, and the image capturing device is used for receiving reflected light generated by light of the light source reflected by the lens photosensitive element.
Description
Technical Field
The present utility model relates to a lens assembling machine, and more particularly, to a focusing system of a lens assembling machine.
Background
The lens of the camera is a window of soul of the whole camera, and even if the camera enters the camera era of the mobile phone, a plurality of lenses with special specifications still have markets. Although the development of zoom lenses has matured, some large aperture lenses still prefer to use fixed focus lenses to reduce the overall volume and weight of the lens. For fixed focus lenses, assembly after focusing of the lens assembly and the photosensitive element (e.g., CCD or CMOS) is an important step, which is typically performed by a dedicated lens assembly machine.
The focusing system in the existing lens assembly machine mainly comprises a lens group and a photosensitive element, wherein the lens group and the photosensitive element are erected, the photosensitive element generates an image, and whether the lens group and the photosensitive element are successfully focused or not is judged according to the definition of the image. For the photosensitive element to generate an image, the photosensitive element connection image test Board (Processing Board) must be powered on and communication is enabled, but the step of connecting the photosensitive element to the image test Board in a communication manner generally takes several seconds to tens of seconds, which significantly affects the focusing efficiency between the lens set and the photosensitive element.
In addition, some low-and-medium-order lenses may use a photosensitive element with a low frame rate (also called an image capturing speed) based on cost consideration, which results in that when the image definition is found to be poor and the lens group and the photosensitive element need to be re-focused, the image generation speed of the photosensitive element with the low frame rate cannot timely respond to the change of the definition of the focusing process.
Disclosure of Invention
In view of the foregoing, the present utility model provides a focusing system of a lens assembling machine, which is helpful to solve one or more problems of the existing focusing method that require using a photosensitive element of a lens to generate an image and assembling a middle-low order lens.
The focusing system of the lens assembly machine disclosed by the utility model is used for focusing a lens photosensitive element and a lens assembly. The focusing system comprises a light source, a mask pattern, a bearing seat, a light reflecting element and an image capturing device. The mask pattern is disposed corresponding to the light source, and allows light of the light source to pass through. The bearing seat is used for loading the lens photosensitive element and the lens group. The light reflecting element is arranged corresponding to the shade pattern and is used for reflecting the light of the light source and allowing a reflected light generated by the light of the light source reflected by the lens photosensitive element to pass through. The light reflection element is arranged between the bearing seat and the image capturing device, and the image capturing device is used for receiving reflected light generated by light of the light source reflected by the lens photosensitive element so as to generate an image.
According to the focusing system of the lens assembly machine disclosed by the utility model, the additionally arranged image capturing device is used for generating the focusing image, so that the lens photosensitive element does not need to generate the image, can be kept in a non-energized state and does not need to be in a signal transmission state in the whole focusing and assembly process, and the focusing efficiency of the lens photosensitive element and the lens group is improved. In addition, since the generation rate of the image for focusing depends on the photosensitive element of the image capturing device, the photosensitive element of the lens assembly of either the low order or the high order can be effectively focused with the lens group, thereby greatly improving the compatibility of the lens assembly machine for lenses of different specifications.
The foregoing description of the utility model and the following description of embodiments are provided to illustrate and explain the principles of the utility model and to provide further explanation of the utility model as claimed.
Drawings
Fig. 1 is a schematic view of a focusing system of a lens assembling machine according to an embodiment of the utility model.
FIG. 2 is a flow chart of a focusing method using the focusing system of FIG. 1.
Fig. 3 is a schematic view of a focusing image generated by the focusing system of fig. 1.
Reference numerals illustrate:
1: focusing system
2: lens photosensitive element
21: photosensitive surface
3: lens group
10: light source
20: mask pattern
210: marking
30: bearing seat
40: light reflecting element
50: image capturing device
510: photosensitive element for image capturing
60: light collimator
70: driving piece
L1: projection beam
L2: reflected light beam
L3: imaging light beam
S1-S6: step (a)
Detailed Description
The detailed features and advantages of the present utility model will be readily apparent to those skilled in the art from that description and claims, and from the following detailed description and drawings. The following examples illustrate the aspects of the utility model in further detail, but are not intended to limit the scope of the utility model in any way.
Fig. 1 is a schematic view of a focusing system of a lens assembly machine according to an embodiment of the utility model. In the present embodiment, the focusing system 1 is used as a part of a lens assembling machine. The lens assembly machine may include a material carrier, a mechanical arm for handling material, a dispenser, and/or an operator interface. The focusing system 1 may include a light source 10, a mask pattern 20, a carrier 30, a light reflecting element 40, and an image capturing device 50.
The light source 10 may be any light source that can generate light that is reflected by a photosensitive element, such as a monochromatic laser emitter or a white light laser emitter or a halogen light source. The mask pattern 20 is disposed corresponding to the light source 10, and the mask pattern 20 allows light of the light source 10 to pass through. The mask pattern 20 may be a plate having openings for masking the light source to generate an image, a hole with a rough surface or a through pattern plate; alternatively, the mask pattern 20 may be a transparent pattern plate having a surface coated with an opaque metal film and hollowed out thereon. The mask pattern 20 has marks 210, and light emitted from the light source 10 may pass through the marks 210 to form a light beam having a specific cross-sectional shape or pattern. In the present embodiment, the mark 210 includes a cross-shaped opening, so that the light emitted from the light source 10 passes through the mark 210 to form a beam having a cross-shaped cross-section, but the shape and size of the mark 210 are not intended to limit the present utility model.
The carrying base 30 is used for carrying the lens photosensitive element 2 and the lens group 3. The carrier may be a base having a flat surface, wherein the lens-sensitive element 2 and a support frame may be disposed on the flat surface, and the lens group 3 may be disposed on the support frame above the lens-sensitive element 2; in some cases, the carrier may be a frame with a plurality of hooking structures, where the lens photosensitive element 2 and the lens group 3 are hooked with different hooking structures, so that the lens group 3 is located above the lens photosensitive element 2.
The light reflecting element 40 may be a mirror or a dichroic prism, which is disposed corresponding to the mask pattern 20. Specifically, as shown in fig. 1, the light reflecting element 40 may be located above the lens photosensitive element 2 and the lens group 3, and the mask pattern 20 is located on the left or right side of the light reflecting element 40.
The light reflecting element 40 is used for reflecting the light of the light source 10. As shown in fig. 1, a projection light beam L1 emitted from the light source 10 and formed to have a cross-sectional shape or pattern corresponding to the mark 210 by the mask pattern 20 travels to the light reflecting element 40, and the projection light beam L1 is reflected by the light reflecting element 40 to form a reflected light beam L2. Further, the light reflecting element 40 also allows the reflected light generated by the light of the light source 10 reflected by the lens photosensitive element 2 to pass through. As shown in fig. 1, the reflected light beam L2 passes through the lens group 3 and then travels to the lens photosensitive element 2, the reflected light beam L2 is reflected by the glossy photosensitive surface 21 of the lens photosensitive element 2 to form an imaging light beam L3 having a traveling direction opposite to that of the reflected light beam L2, and the imaging light beam L3 travels reversely through the lens group 3 and the light reflecting element 40. In the present embodiment, the light reflecting element 40 may be a mirror having a central through hole (not shown) that allows the imaging light beam L3 to pass therethrough.
The image capturing device 50 may be an optical microscope or a video camera, which is arranged in correspondence with the light reflecting element 40. The light reflecting element 40 may be disposed between the carrier 30 and the image capturing device 50. The image capturing device is used for receiving the reflected light generated by the light of the light source reflected by the lens photosensitive element. As shown in fig. 1, the imaging light beam L3 passing through the light reflecting element 40 may travel to the image capturing device 50, and the image capturing photosensitive element 510 of the image capturing device 50 may receive the imaging light beam L3 to generate an image.
In this embodiment, the focusing system 1 may further include a light collimator 60 and a driving member 70. The light collimator 60 may be a collimating lens disposed between the light reflecting element 40 and the carrier 30. More specifically, the light collimator 60 may be disposed between the light reflecting element 40 and the lens group 3. The driving member 70 may be a component including a power source (e.g. a stepper motor or a pump) and a fixture (e.g. a clamping jaw or a negative pressure suction head), which is disposed corresponding to the carrier 30. The driving member 70 is used for moving at least one of the lens photosensitive element 2 and the lens group 3 for focusing both, which will be described in detail later.
Referring to fig. 2 and 3, fig. 2 is a flow chart illustrating a focusing method using the focusing system of fig. 1. Fig. 3 is a schematic view of a focusing image generated by the focusing system of fig. 1. The focusing method may include steps S1 to S6. The lens photosensitive element 2 and the lens group 3 to be assembled are placed on the bearing seat 30. The lens group 3 may be a lens barrel accommodating a plurality of lenses or a lens provided with axial assembling members at its periphery. The driving member 70 picks up (e.g., a clamping jaw or a suction head sucks) the lens group 3 such that the lens group 3 is located above the lens-photosensitive element 2 and spaced apart from the lens-photosensitive element 2.
In step S1, the light beam is passed through the mask pattern 20. As shown in fig. 1, light emitted from the light source 10 passes through the mask pattern 20 to form a projection beam L1 having a cross section corresponding to the shape of the mark 210.
In step S2, the light beam (projection beam L1) passing through the mask pattern 20 is reflected by the light reflecting element 40 to generate a reflected beam L2 (first reflected light). In step S3, the reflected light beam L2 is made to enter the lens photosensitive element 2 through the lens group 3. As shown in fig. 1, the reflected light beam L2 travels downward, is converted into a collimated light beam by the light collimator 60, and then further passes through the lens group 3. The lens group 3 condenses the reflected light beam L2, and the reflected light beam L2 passing through the lens group 3 further travels to the lens photosensitive element 2.
In step S4, the lens photosensitive element 2 reflects the reflected light beam L2 to generate an imaging light beam L3 (second reflected light). As shown in fig. 1, the reflected light beam L2 is reflected by the glossy photosensitive surface 21 of the lens photosensitive element 2 to form an imaging light beam L3 having a traveling direction opposite to that of the reflected light beam L2, and the imaging light beam L3 travels reversely through the lens group 3 and the light reflecting element 40.
In step S5, the image capturing device 50 receives the imaging light beam L3 to generate an image for focusing. As shown in fig. 1, the imaging light beam L3 passing through the light reflecting element 40 travels to the image capturing device 50 sequentially through the lens group 3, the light collimator 60, and the light reflecting element 40. The imaging light-sensing element 510 of the imaging device 50 receives the imaging light beam L3 to generate a focusing image containing the marks 210 of the mask pattern 20. Fig. 3 exemplarily shows an image for focusing.
In step S6, the lens photosensitive element 2 and the lens group 3 are focused according to the focusing image. Specifically, the operator or the image processing software can determine whether the lens photosensitive element 2 and the lens group 3 are successfully focused based on the sharpness of the image for focusing. When the sharpness of the image for focusing is observed to be lower than the standard value (that is, the sharpness is insufficient), the lens photosensitive element 2 and/or the lens group 3 are moved so that the lens photosensitive element 2 and the lens group 3 refocus. Referring to the image for focusing of fig. 3 (a), the imaging blur of the mark 210 represents that the photosurface 21 of the lens photosensor 2 deviates from the focal plane of the lens group 3 (i.e., the photosurface 21 is not located on the focal plane) and the sharpness of the image for focusing is insufficient. At this time, the driving member 70 can be started to adjust the height of the lens assembly 3 relative to the lens photosensitive element 2, so as to perform focusing of the lens photosensitive element 2 and the lens assembly 3.
When the sharpness of the image for focusing is equal to or higher than the standard value (that is, the sharpness is sufficient), the relative position between the lens photosensitive element 2 and the lens group 3 is fixed. Referring to the focusing image of fig. 3 (b), the mark 210 is imaged sharply, which means that the photosensitive surface 21 of the lens photosensitive element 2 is located on the focal plane of the lens group 3. At this time, the adhesive is provided by the adhesive dispenser of the lens assembly machine to fix the lens photosensitive element 2 and the lens group 3.
Compared with the conventional focusing method, the focusing method disclosed in the present embodiment generates the focusing image by using the photosensitive element of the lens itself, and thus the lens photosensitive element 2 does not need to transmit the image signal. Further, when the reflected light beam L2 travels to the lens photosensitive element 2 and the reflected light beam L2 is reflected by the lens photosensitive element 2 to generate the imaging light beam L3, the light sensing surface 21 does not receive the reflected light beam L2 and does not generate any image according to the reflected light beam L2 because the lens photosensitive element 2 is not in communication with the image testing board. Since the lens photosensitive element 2 and the image test board require a working time of several seconds to several tens of seconds for communication connection, the focusing method disclosed in the embodiment can omit a step of communication connection of the lens photosensitive element 2 and the image test board for transmitting image signals, thereby improving focusing efficiency of the lens photosensitive element 2 and the lens group 3.
Further, in the present embodiment, the imaging photosensitive element 510 of the imaging device 50 may have a higher frame rate than the lens photosensitive element 2. Compared with the conventional focusing method, which has the problem of difficulty in focusing due to too low frame rate of the lens photosensitive element 2 of the low-order product, the focusing system 1 and the method of the embodiment can effectively focus whether the lens photosensitive element 2 is used for the low-order lens or the high-order lens, thereby greatly improving the compatibility of the lens assembling machine for lenses with different specifications.
In summary, according to the focusing system and focusing method disclosed by the utility model, the additionally configured image capturing device is used for generating the focusing image, so that the lens photosensitive element does not need to generate the image, and can be kept in a non-energized state and in a signal transmission state in the whole focusing and assembling process, thereby being beneficial to improving the focusing efficiency of the lens photosensitive element and the lens group. In addition, since the generation rate of the image for focusing depends on the photosensitive element of the image capturing device, the photosensitive element of the lens assembly of either the low order or the high order can be effectively focused with the lens assembly, thereby greatly improving the compatibility of the lens assembly machine for lenses of different specifications.
The present utility model is not limited to the above-described embodiments, and any person skilled in the art may make some modifications to the shape, structure, features and spirit of the present utility model without departing from the spirit and scope of the present utility model, so that the scope of the present utility model is defined in the appended claims.
Claims (6)
1. A focusing system for a lens assembly machine for focusing a lens light-sensitive element and a lens group, comprising:
a light source;
a shade pattern corresponding to the light source and allowing the light of the light source to pass through;
a bearing seat for loading the lens photosensitive element and the lens group;
a light reflection element arranged corresponding to the mask pattern, the light reflection element being used for reflecting the light of the light source and allowing a reflected light generated by the light of the light source reflected by the lens photosensitive element to pass through; and
the light reflection element is arranged between the bearing seat and the image capturing device, and the image capturing device is used for receiving the reflected light generated by the light of the light source reflected by the lens photosensitive element so as to generate an image.
2. The focusing system of claim 1, further comprising a light collimator disposed between the light reflecting element and the carrier.
3. The focusing system of claim 1, wherein the image capturing device comprises an image capturing photosensitive element, and the image capturing photosensitive element has a higher frame rate than the lens photosensitive element.
4. The focusing system of claim 1, further comprising a driving member disposed corresponding to the carrier, wherein the driving member is configured to move at least one of the lens photosensitive element and the lens group for focusing.
5. The focusing system of claim 1, wherein the lens sensor does not transmit an image signal.
6. The focusing system of claim 1, wherein the lens sensing element does not generate an image based on light from the light source.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW111206882U TWM637060U (en) | 2022-06-29 | 2022-06-29 | Focusing system of lens assembly machine |
| TW111206882 | 2022-06-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220399771U true CN220399771U (en) | 2024-01-26 |
Family
ID=86689464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321545105.6U Active CN220399771U (en) | 2022-06-29 | 2023-06-16 | Focusing system of lens assembly machine |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN220399771U (en) |
| TW (1) | TWM637060U (en) |
-
2022
- 2022-06-29 TW TW111206882U patent/TWM637060U/en unknown
-
2023
- 2023-06-16 CN CN202321545105.6U patent/CN220399771U/en active Active
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| Publication number | Publication date |
|---|---|
| TWM637060U (en) | 2023-02-01 |
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