Dual-window imaging mechanism

Abstract

The present invention provides a dual-window imaging mechanism, comprising an imaging assembly, a lens barrel, and a semi-transparent and semi-reflective prism. The lens barrel is provided with a light passage, the semi-transparent and semi-reflective prism is located within the light passage, and the semi-transparent and semi-reflective prism is fixedly connected to the lens barrel. The light passage includes a shooting port, a first imaging port, and a second imaging port. The imaging assembly is configured to image the image captured by the first imaging port using light transmitted by the semi-transparent and semi-reflective prism, and to image the image captured by the second imaging port using light reflected by the semi-transparent and semi-reflective prism. The present invention can expand the field of view of the imaging assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of semiconductor packaging, and in particular to a double-window imaging mechanism. Background Art

[0002] In the field of semiconductor packaging, a camera is generally paired with a lens to form a field of view window, and an object mark at a specific distance is identified through the field of view window.

[0003] However, the field of view of existing cameras is limited. When the object marker is large or two markers need to be recognized at the same time, it is difficult to achieve this with a single camera. Summary of the Invention

[0004] In order to solve the above problems, the dual-window imaging mechanism provided by the present invention can expand the field of view of the imaging component by arranging a lens barrel and a semi-transparent and semi-reflective prism.

[0005] The present invention provides a double-window imaging mechanism, comprising: an imaging component, a lens barrel and a semi-transparent and semi-reflective prism;

[0006] A light passage is provided in the lens barrel, the semi-transparent and semi-reflective prism is located in the light passage, and the semi-transparent and semi-reflective prism is fixedly connected to the lens barrel;

[0007] The light passage includes: a shooting port, a first imaging port, and a second imaging port;

[0008] The imaging component is used to image the picture collected by the first imaging port through the transmitted light of the semi-transparent and semi-reflective prism, and to image the picture collected by the second imaging port through the reflected light of the semi-transparent and semi-reflective prism.

[0009] Optionally, the first imaging port is located on a side of the semi-transparent and semi-reflective prism facing a first direction, and the second imaging port is located on a side of the semi-transparent and semi-reflective prism facing a second direction, both the first imaging port and the second imaging port face the first direction, and the first direction is perpendicular to the second direction;

[0010] The dual-window imaging mechanism further includes: a first reflecting prism;

[0011] The first reflecting prism is located on the side of the semi-transparent and semi-reflective prism facing the second direction, and the second imaging port is located on the side of the first reflecting prism facing the first direction. The imaging component images the picture collected by the second imaging port through the reflected light of the semi-transparent and semi-reflective prism and the first reflecting prism.

[0012] Optionally, the shooting port faces a third direction, the third direction intersects with the first direction, and the imaging assembly is located on a side of the shooting port facing the third direction;

[0013] The dual-window imaging mechanism further includes: a second reflecting prism;

[0014] The second reflecting prism is located on the side of the semi-transparent and semi-reflective prism facing the shooting port, and the imaging component is located on the side of the second reflecting prism facing the third direction. The imaging component is used to image the pictures collected by the first imaging port and the second imaging port through the second reflecting prism and the semi-transparent and semi-reflective prism.

[0015] Optionally, the dual-window imaging mechanism further comprises: a support frame and an identification member;

[0016] The support frame is connected to the lens barrel, the identification piece is connected to the support frame, and the imaging component is used to collect the identification on the identification piece through the second imaging port.

[0017] Optionally, the support frame includes: a fixed seat, a sliding platform and a marking seat;

[0018] The fixing seat is fixedly connected to the lens barrel, the sliding platform is connected to the fixing seat, and the marking seat is connected to the identification member;

[0019] The slide is used to drive the marking seat to move back and forth along the direction of the second imaging port.

[0020] Optionally, the dual-window imaging mechanism further comprises: a first light source;

[0021] The first light source is connected to the lens barrel, and is used to provide fill light for the image captured through the first imaging port.

[0022] Optionally, the dual-window imaging mechanism further includes: a second light source;

[0023] The second light source is connected to the imaging component and / or the lens barrel, and is used to provide fill light for the image captured by the imaging component.

[0024] Optionally, the imaging assembly includes: a camera and a lens;

[0025] The camera is fixedly connected to the lens, the optical axis of the camera coincides with the optical axis of the lens, and the lens faces the shooting port;

[0026] The camera is used to image the picture collected by the first imaging port through the transmitted light of the lens and the semi-transparent and semi-reflective prism, and to image the picture collected by the second imaging port through the reflected light of the lens and the semi-transparent and semi-reflective prism.

[0027] The dual-window imaging mechanism provided by an embodiment of the present invention, by providing a lens barrel and a semi-transparent and semi-reflective prism, enables the imaging component to simultaneously capture images through two windows, namely, the field of view formed by the first imaging port and the second imaging port, thereby expanding the field of view of the imaging component. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a cross-sectional view of a dual-window imaging mechanism according to an embodiment of the present application.

[0029] Reference numerals

[0030] 1. Imaging assembly; 11. Camera; 12. Lens; 2. Lens barrel; 21. Light passage; 22. Shooting port; 23. First imaging port; 24. Second imaging port; 31. Semi-transparent and semi-reflective prism; 32. First reflecting prism; 33. Second reflecting prism; 34. First light source; 4. Support frame; 41. Fixing seat; 42. Sliding table; 43. Marking seat; 44. Identification piece. DETAILED DESCRIPTION

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0032] It should be noted that, in the present invention, relational terms such as first and second, etc. are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0033] First, the professional terms involved in the present invention are explained as follows:

[0034] Semi-transparent and semi-reflective prism: a prism that transmits half of the light and reflects half of it;

[0035] Z-slide: a mechanical structure that can provide Z-direction linear motion;

[0036] Field of view: the maximum range that an imaging component can observe;

[0037] Point light source: refers to a light source that emits light uniformly from one point to the surrounding space;

[0038] Ring light source: The LED array is cone-shaped and illuminates the surface of the object at an oblique angle, illuminating a small area through diffuse reflection.

[0039] This embodiment provides a dual-window imaging mechanism, combined with Figure 1 The dual-window imaging mechanism includes: an imaging component 1, a lens barrel 2, a semi-transparent and semi-reflective prism 31, a first reflecting prism 32, a second reflecting prism 33, a first light source 34, a second light source, a support frame 4 and an identification member 44.

[0040] The lens barrel 2 is provided with a light passage 21. A semi-transparent and semi-reflective prism 31 is located within the light passage 21 and is fixedly connected to the lens barrel 2. The light passage 21 includes a shooting port 22, a first imaging port 23, and a second imaging port 24. The imaging assembly 1 is configured to image the image captured by the first imaging port 23 using light transmitted by the semi-transparent and semi-reflective prism 31, and to image the image captured by the second imaging port 24 using light reflected by the semi-transparent and semi-reflective prism 31.

[0041] The lens barrel 2 can be cylindrical or prismatic in shape, and this embodiment does not impose any specific restrictions. The imaging assembly 1 can be located within the light passage 21 or outside the lens barrel 2. In this embodiment, the imaging assembly 1 is located outside the lens barrel 2, spaced apart from the lens barrel 2, and the optical axis of the imaging assembly 1 coincides with the central axis of the imaging port 22. The transflective prism 31 is not specifically defined in this embodiment.

[0042] It should be noted that the first imaging port 23 is located on the side of the semi-transparent and semi-reflective prism 31 facing the first direction; the second imaging port 24 is located on the side of the semi-transparent and semi-reflective prism 31 facing the second direction; the first imaging port 23 and the second imaging port 24 are both facing the first direction; the first reflecting prism 32 is located on the side of the semi-transparent and semi-reflective prism 31 facing the second direction; the second imaging port 24 is located on the side of the first reflecting prism 32 facing the first direction; the shooting port 22 faces the third direction; the imaging component 1 is located on the side of the shooting port 22 facing the third direction; the second reflecting prism 33 is located on the side of the semi-transparent and semi-reflective prism 31 facing the shooting port 22; the imaging component 1 is located on the side of the second reflecting prism 33 facing the third direction.

[0043] In this embodiment, the first direction is vertically upward, and the second and third directions are both horizontally leftward, but are not limited thereto. The reflective surface of the first reflecting prism 32 faces upward to the right, and the reflective surface of the second reflecting prism 33 faces upward to the left. The first reflecting prism 32 is horizontally connected to the top of the semi-transparent and semi-reflective prism 31. The shooting port 22 is located to the left of the second reflecting prism 33 in the horizontal direction. The semi-transparent and semi-reflective prism 31 is located directly above the second reflecting prism 33. The first imaging port 23 is located directly above the semi-transparent and semi-reflective prism 31. The second imaging port 24 is located directly above the first reflecting prism 32.

[0044] In this way, light reflected from the image above the first imaging port 23 passes through the semi-transparent and semi-reflective prism 31 from top to bottom. Light reflected from the image above the second imaging port 24 strikes the first reflecting prism 32 from top to bottom, passes through the first reflecting prism 32 from left to right, strikes the semi-transparent and semi-reflective prism 31, and is reflected from top to bottom by the semi-transparent and semi-reflective prism 31 out of the semi-transparent and semi-reflective prism 31. Thus, the imaging assembly 1 receives light reflected and transmitted by the semi-transparent and semi-reflective prism 31 through the second reflecting prism 33, thereby forming an image.

[0045] Furthermore, the support frame 4 includes a fixed base 41, a slide 42, and a marking base 43. The fixed base 41 is fixedly connected to the lens barrel 2, the slide 42 is connected to the fixed base 41, and the marking base 43 is connected to the identification member 44. The slide 42 can drive the marking base 43 to move back and forth in the direction of the second imaging port 24. This allows the operator to adjust the height of the identification member 44 relative to the second imaging port 24 by moving the slide 42, thereby adjusting the size of the marking on the identification member 44 on the imaging assembly 1.

[0046] It should be noted that the marking member 44 is made of a reflective material; the slide 42 can move the marking base 43 via a screw lift mechanism or an electric push rod mechanism. In this embodiment, the marking member 44 is a glass sheet with a marking on it; the slide 42 is a Z-axis slide 42, and the movement of the marking base 43 is achieved via a rack and pinion mechanism.

[0047] One mechanism that can realize the function of the slide 42 is as follows: the slide 42 includes: a knob, a rotating shaft, a gear, a rack, a cross roller guide, an upper connecting platform and a lower connecting platform. The lower connecting platform is above the fixed seat 41 and is fixedly connected to the fixed seat 41; the upper connecting platform is located below the marking seat 43 and is fixedly connected to the marking seat 43. The upper connecting platform is fixedly connected to the cross roller guide on the side facing the lower connecting platform, and the cross roller guide is slidably connected to the lower connecting platform in the up and down directions. The rotating shaft passes through the side wall of the lower connecting platform from the outside of the lower connecting platform in the horizontal direction. The end of the rotating shaft located on the outside of the lower connecting platform is fixedly connected to the knob, and the other end of the rotating shaft is fixedly connected to the gear, the gear is meshed with the rack, and the rack is fixedly connected to the upper connecting platform. In this way, by turning the knob, the upper connecting platform can be driven up and down through the cooperation of the gear and the rack, thereby driving the marking seat 43 to move up and down.

[0048] The first light source 34 can be located within the light passage 21 or outside the lens barrel 2. In this embodiment, the first light source 34 is a ring-shaped light source, located directly above the first imaging port 23 and fixedly connected to the lens barrel 2. As such, when the imaging assembly 1 images the image captured by the first imaging port 23 on the chip surface, the first light source 34 can provide fill light for the chip surface, enabling the imaging assembly 1 to clearly image the chip surface.

[0049] Furthermore, the imaging component 1 includes: a camera 11 and a lens 12. The camera 11 is fixedly connected to the lens 12, and the lens 12 is located on the right side of the camera 11. The optical axis of the camera 11 coincides with the optical axis of the lens 12, and the lens 12 faces the shooting port 22. In this way, the camera 11 can simultaneously image the image of the chip captured by the first imaging port 23 and the image of the identification member 44 captured by the second imaging port 24 through the transmitted light and reflected light of the lens 12 and the semi-transparent and semi-reflective prism 31. At this point, the system can determine the position of the chip relative to the identification member 44 through the imaging image provided by the camera 11, thereby facilitating the adjustment of the chip position.

[0050] It should be noted that the second light source is connected to the imaging component 1 and / or the lens barrel 2. When the second light source is a point light source, the point light source is located inside the lens 12; when the second light source is a ring light source, the ring light source is located inside the lens barrel 2 and is located on the side of the second reflective prism facing the shooting port 22; when the second light source is a point light source and a ring light source, the point light source is located inside the lens 12, and the ring light source is located inside the lens barrel 2 and is located on the side of the second reflective prism facing the shooting port 22, but the present invention is not limited thereto. In this embodiment, the second light source is a point light source. By providing the second light source, the second light source can be used to supplement the image captured by the imaging component 1, further improving the clarity of the image captured by the imaging component 1.

[0051] The dual-window imaging mechanism has a simple structure and low manufacturing cost. By providing the lens barrel 2 and the semi-transparent and semi-reflective prism 31, the imaging component 1 can simultaneously capture images through the two windows, namely, the field of view formed by the first imaging port 23 and the second imaging port 24, thereby expanding the field of view of the imaging component 1.

[0052] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A dual-window imaging mechanism, characterized in that: The dual-window imaging mechanism is applied to the field of semiconductor packaging, and comprises: an imaging component, a lens barrel and a semi-transparent and semi-reflective prism; A light passage is provided in the lens barrel, the semi-transparent and semi-reflective prism is located in the light passage, and the semi-transparent and semi-reflective prism is fixedly connected to the lens barrel; The light passage comprises: a shooting port, a first imaging port, and a second imaging port; the first imaging port is located on a side of the semi-transparent and semi-reflective prism facing a first direction, and the second imaging port is located on a side of the semi-transparent and semi-reflective prism facing a second direction; the first imaging port and the second imaging port both face the first direction, and the first direction is perpendicular to the second direction; The dual-window imaging mechanism further includes: a support frame and an identification member; the support frame is connected to the lens barrel, the identification member is connected to the support frame, and the imaging assembly is used to capture the identification on the identification member through the second imaging port; The support frame includes: a fixed base, a slide and a marking base; the fixed base is fixedly connected to the lens barrel, the slide is connected to the fixed base, and the marking base is connected to the identification member; the slide is used to drive the marking base to move back and forth along the direction of the second imaging port to adjust the size of the mark on the identification member in the imaging assembly; The imaging component is used to image the image of the chip surface collected by the first imaging port through the transmitted light of the semi-transparent and semi-reflective prism, and to image the image of the identification element collected by the second imaging port through the reflected light of the semi-transparent and semi-reflective prism; The system uses the imaging image provided by the imaging component to determine the position of the chip relative to the identification component, so as to adjust the chip position.

2. The dual-window imaging mechanism according to claim 1, characterized in that: The dual-window imaging mechanism further includes: a first reflecting prism; The first reflecting prism is located on the side of the semi-transparent and semi-reflective prism facing the second direction, and the second imaging port is located on the side of the first reflecting prism facing the first direction. The imaging component images the picture collected by the second imaging port through the reflected light of the semi-transparent and semi-reflective prism and the first reflecting prism.

3. The dual-window imaging mechanism according to claim 2, characterized in that: The shooting port faces a third direction, the third direction intersects with the first direction, and the imaging assembly is located on a side of the shooting port facing the third direction; The dual-window imaging mechanism further includes: a second reflecting prism; The second reflecting prism is located on the side of the semi-transparent and semi-reflective prism facing the shooting port, and the imaging component is located on the side of the second reflecting prism facing the third direction. The imaging component is used to image the pictures collected by the first imaging port and the second imaging port through the second reflecting prism and the semi-transparent and semi-reflective prism.

4. The dual-window imaging mechanism according to claim 1, characterized in that: The dual-window imaging mechanism further includes: a first light source; The first light source is connected to the lens barrel, and is used to provide fill light for the image captured through the first imaging port.

5. The dual-window imaging mechanism according to claim 1, characterized in that: The dual-window imaging mechanism further includes: a second light source; The second light source is connected to the imaging component and / or the lens barrel, and is used to provide fill light for the image captured by the imaging component.

6. The dual-window imaging mechanism according to claim 1, characterized in that: The imaging assembly includes: a camera and a lens; The camera is fixedly connected to the lens, the optical axis of the camera coincides with the optical axis of the lens, and the lens faces the shooting port; The camera is used to image the picture collected by the first imaging port through the transmitted light of the lens and the semi-transparent and semi-reflective prism, and to image the picture collected by the second imaging port through the reflected light of the lens and the semi-transparent and semi-reflective prism.

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