Lens ink coating jig and ink coating system

Abstract

The utility model discloses a lens ink coating jig and an ink coating system. The jig comprises a first shell, a second shell, a first silica gel pad and a second silica gel pad, a cavity is defined by the first shell and the second shell, the first silica gel pad is attached to the surface, in the cavity, of the first shell, and the second silica gel pad is attached to the surface, in the cavity, of the second shell; the first shell comprises an ink coating hole, the first silica gel pad is an annular silica gel pad, and the edge of an inner ring of the first silica gel pad abuts against the edge of the ink coating hole. The lens ink coating jig can effectively improve the surface ink coating precision of the non-planar lens.

Description

Technical Field

[0001] The utility model belongs to the technical field of lens ink coating, and in particular relates to a lens ink coating fixture and an ink coating system. Background Art

[0002] With the continuous advancement of optical processing technology, optical lenses such as reflectors, aspheric mirrors, and free-form mirrors have been widely used in various high-precision optical systems. In order to minimize the interference of stray light on the effective signal light in the optical system, it is usually necessary to apply ink to the non-working surface of the lens to reduce the reflection or transmission of stray light in the lens. The existing lens inking technology is affected by the surface curvature of the non-planar lens, and it is difficult to control the size of the inking area with high precision, resulting in ink overflow or uneven inking, which in turn affects the imaging quality of the optical system. Utility Model Content

[0003] In order to improve the surface ink coating accuracy of a non-planar lens, the utility model provides a lens ink coating jig and an ink coating system.

[0004] In a first aspect, the utility model provides a lens ink coating jig, the jig comprising a first shell, a second shell, a first silicone pad and a second silicone pad;

[0005] The first shell and the second shell together form a cavity, the first silicone pad is in contact with the surface of the first shell in the cavity, and the second silicone pad is in contact with the surface of the second shell in the cavity;

[0006] The first shell includes an ink coating hole, the first silicone pad is an annular silicone pad, and the edge of the inner ring of the first silicone pad abuts against the edge of the ink coating hole.

[0007] In some embodiments, the first housing further includes a first groove, and the first groove includes a first groove body wall and a second groove body wall;

[0008] The first silicone pad is in contact with the surface of the first tank body wall, and the first silicone pad is in contact with the surface of the second tank body wall.

[0009] In some embodiments, the thickness of the first silicone pad is not less than the height of the first trough wall.

[0010] In some embodiments, the ink coating hole is opened on the wall of the second tank body.

[0011] When ink is applied to the center of the mirror, the first silicone pad is used to prevent ink from overflowing from the edge of the ink application hole and entering other areas of the mirror. The first silicone pad located between the lens and the first shell can also serve as a positioning member and a buffer layer to prevent the lens from sliding and protect the surface of the non-planar lens.

[0012] In some embodiments, the shape of the ink-coating hole includes a combination of one or more of a circle, an ellipse, a rectangle, a diamond or a spindle. The shape of the ink-coating hole can be processed according to the actual optical path design requirements.

[0013] In some embodiments, the second housing includes a second groove, and at least one second silicone pad is located in the second groove. The second silicone pad located between the lens and the second housing can serve as a positioning member and a buffer layer to protect the surface of the non-planar lens and prevent the lens from sliding.

[0014] In some embodiments, the shape of the second silicone pad includes one or more of a ring shape, a circle, an ellipse, a rectangle or a diamond shape.

[0015] In a second aspect, the utility model discloses an inking system, which includes a lens, an inking device and any one of the above-mentioned jigs.

[0016] In some embodiments, the inking device is used to apply ink to the lens through the inking hole.

[0017] The present application discloses a lens ink coating jig and an ink coating system, the ink coating system comprising a lens, a jig and an ink coating device. The jig has an internal chamber conforming to the lens for fixing the lens. The ink coating hole on the first shell is used to limit the absolute position accuracy of the ink coating area, and the first silicone pad is used to prevent ink from overflowing and protect the lens surface. The lens ink coating jig can effectively improve the surface ink coating accuracy of non-planar lenses, is low-cost and reusable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a structural schematic diagram of a fixture provided in an embodiment of the present application;

[0020] Figure 2 is a side view of a first shell of a fixture provided in an embodiment of the present application;

[0021] Figure 3 yes Figure 2 Sectional view along the AA section;

[0022] Figure 4 This is a schematic diagram of the position of a first silicone pad of a fixture provided in an embodiment of the present application;

[0023] Figure 5 is a schematic structural diagram of a second shell of a fixture provided in an embodiment of the present application;

[0024] Figure 6 This is a schematic diagram of the position of a second silicone pad of a fixture provided in an embodiment of the present application;

[0025] Figure 7 This is a schematic diagram of the position of a second silicone pad of a fixture provided in an embodiment of the present application;

[0026] Figure 8 This is a schematic diagram of the position of a second silicone pad of a fixture provided in an embodiment of the present application;

[0027] Fig. 9 It is a schematic structural diagram of a first shell of a fixture provided in an embodiment of the present application.

[0028] Among them, the figure marks in the figure are: 11, lens; 111, first surface; 112, second surface; 12, fixture; 121, first shell; 1211, first groove; 1211a, first groove wall; 1211b, second groove wall; 1212, ink coating hole; 122, second shell; 1221, second groove; 123, first silicone pad; 124, second silicone pad. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the present application clearer, the embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are only examples of structures consistent with some aspects of the present application as detailed in the attached claims.

[0030] In order to reduce the interference of various stray lights on the effective signal light of the optical system, it is usually necessary to apply ink to the non-working surface of the optical lens. In the existing pad printing inking technology, due to the change of curvature at different positions on the surface of non-planar lenses, the pad printing accuracy is poor, making it difficult to achieve high-precision inking.

[0031] The embodiment of the present application discloses a lens inking jig, which can achieve high-precision inking on non-planar lens surfaces based on limiting the inking area with a contoured jig, has low cost and is reusable.

[0032] For coaxial optical systems, it is generally necessary to apply ink at the center of the lens surface to reduce the leading signal light. In one embodiment, the fixture has an internal cavity structure conformal to the lens for fixing the lens. The lens is one of the optical lenses such as free-form mirrors, convex lenses, concave lenses or cylindrical lenses. In one example, Figure 1 As shown, the lens 11 is a biconvex lens, including a first surface 111 and a second surface 112. The fixture 12 includes a first shell 121, a second shell 122, a first silicone pad 123, and a second silicone pad 124. The first shell 121 covers the top of the second shell 122, and the lens 11 is located in a cavity formed by the first shell 121 and the second shell 122. The first silicone pad 123 is located between the first shell 121 and the first surface 111 of the lens 11, and the second silicone pad 124 is located between the second shell 122 and the second surface 112 of the lens 11. An ink coating hole is provided on the first shell 121 to limit the size of the ink coating area. The first silicone pad 123 and the second silicone pad 124 located between the shell of the fixture 12 and the lens 11 can be used as a positioning member and a buffer layer to prevent the lens 11 from sliding and protect the surface of the lens 11.

[0033] In one embodiment, the first silicone pad 123 is bonded and fixed to the surface of the first shell 121 in the cavity, and the second silicone pad 124 is bonded and fixed to the surface of the second shell 122 in the cavity. When the lens 11 is accommodated in the cavity formed by the first shell 121 and the second shell 122, the first silicone pad 123 is bonded to the first surface 111 of the lens 11, and the second silicone pad 124 is bonded to the second surface 112 of the lens 11. The lens inking jig can effectively fix the lens 11 and realize the inking process of a non-plane mirror with any surface curvature. For non-plane mirrors with the same size and shape, the profiling jig can be reused to save processing costs.

[0034] In one embodiment, Figure 1 The first housing 121 is also provided with a groove for accommodating the first silicone pad 123. Figures 2 to 4 As shown, Figure 3 for Figure 2 A schematic cross-sectional view of the first shell 121 in the AA section direction, Figure 4Schematic diagram of the structure of the first shell 121 after flipping. In one example, the first shell 121 is provided with a first groove 1211 on the side facing the second shell 122, and the first groove 1211 includes a first groove wall 1211a and a second groove wall 1211b. The ink coating hole 1212 is a through hole on the second groove wall 1211b, and the central axis of the ink coating hole 1212 coincides with the central axis of the lens 11. The annular first silicone pad 123 is nested in the first groove 1211 and fits with the surfaces of the first groove wall 1211a and the second groove wall 1211b. The thickness of the first silicone pad 123 is not less than the height of the first groove wall 1211a, and the edge of the inner ring of the first silicone pad 123 abuts against the edge of the ink coating hole 1212, which is used to prevent ink from overflowing from the ink coating area at the center of the first surface 111, affecting the ink coating accuracy.

[0035] In some embodiments, the first shell 121 is a metal shell made based on high-precision processing technology such as CNC turning, CNC milling or laser processing. The first shell 121 is an integrated molded part or the first shell 121 is a split structure with rigid connection, and the rigid connection includes bolt and nut connection, welding connection, strong adhesive bonding or lap connection. The shape of the ink-coating hole 1212 obtained by precision machining includes a combination of one or more of circular, elliptical, rectangular, diamond or spindle shapes, which is used to improve the absolute position accuracy of the ink-coating area. The ink-coating hole 1212 cooperates with the first silicone pad 123 to accurately control the size of the ink-coating area and improve the ink-coating accuracy of the non-planar lens surface.

[0036] In one embodiment, Figure 1 The second shell 122 shown in the figure is provided with a groove for accommodating the second silicone pad 124. A through hole is provided in the groove for balancing the internal and external air pressure during the ink coating process to reduce the generation of bubbles during the ink coating process. The shape of the through hole includes one or more combinations of circular, elliptical, rectangular, diamond or spindle shapes. The shape of the second silicone pad 124 includes one or more combinations of annular, circular, elliptical, rectangular or diamond shapes. In one example, as Figure 5 and Figure 6 As shown, the second housing 122 has a second groove 1221 on one side facing the first housing 121, and the annular second silicone pad 124 is located in the second groove 1221. The edge of the inner ring of the second silicone pad 124 abuts against the edge of the through hole in the second groove 1221. In another example, Figure 7 and Figure 8 As shown, a plurality of second silicone pads 124 are symmetrically distributed around the through hole in the second groove 1221. The second silicone pads 124 are used as a buffer layer to protect the second surface 112 of the lens 11 when the first shell 121 and the second shell 122 are covered, so as to prevent the mirror surface from cracking or being damaged due to the pressure of the shell covering.

[0037] When ink is applied to the edge area of ​​the non-planar lens surface, the annular first silicone pad 123 is used to prevent ink from overflowing from the edge area of ​​the mirror surface into the central area of ​​the mirror surface. Fig. 9 The figure shows a schematic diagram of the structure of the first shell 121 after flipping. The first shell 121 is provided with a plurality of ink-coating holes 1212, which are symmetrically distributed around the first groove 1211. When the annular first silicone pad 123 is nested in the first groove 1211, the edge of its outer ring abuts against the edge of each ink-coating hole, which is used to prevent ink from overflowing into the central area of ​​the mirror surface. In another embodiment, the second shell 122 is also provided with a plurality of ink-coating holes, which are symmetrically distributed around the second groove 1221. When the annular second silicone pad 123 is arranged in the second groove 1221, the edge of its outer ring abuts against the edge of each ink-coating hole. After the first shell 121 and the second shell 122 are covered, the jig can be used to perform double-sided ink coating on the edge area of ​​the first surface 111 and the edge area of ​​the second surface 112 of the lens 11. The first silicone pad 123 and the second silicone pad 124 are both used to prevent ink from overflowing from the ink-coating area.

[0038] In one embodiment, the inking system includes Figure 1 The jig 12, lens and inking device are shown. The jig 12 has an internal chamber conforming to the lens, and the inking device includes an inking element and a control element. In one example, the inking element is a pad printing rubber head, and the surface of the pad printing rubber head is coated with ink. During the inking process, the control element is used to control the pad printing rubber head to pad print ink on the surface of the lens through the ink coating hole. In another example, the inking element is an inkjet nozzle, and the inkjet nozzle contains ink. The control element is used to control the inkjet nozzle to spray ink into the ink coating hole to complete the inking.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which the present application belongs. In the description of the embodiments of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "height", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. The terms "and / or", "one" and "an" in the singular form used herein are also intended to include plural forms, unless the context clearly indicates otherwise. When the terms "comprising" and / or "including" are used in this specification, it indicates the presence of the features, elements and / or fixtures, but does not exclude the presence or addition of one or more other features, elements, fixtures and / or their combinations, i.e., any and all combinations of one or more related listed items. The ordinals such as "first" and "second" cited in the embodiments of the present application are merely identifications and do not refer to other meanings such as a specific order or imply relative importance. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to the specific circumstances. The "one or more embodiments" used herein do not refer to the same embodiments, but are based on any suitable combination of specific features, structures or characteristics. The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A lens ink coating jig, characterized in that: It includes a first shell, a second shell, a first silicone pad and a second silicone pad; The first shell and the second shell together form a cavity, the first silicone pad is in contact with the surface of the first shell in the cavity, and the second silicone pad is in contact with the surface of the second shell in the cavity; The first shell includes an ink coating hole, the first silicone pad is an annular silicone pad, and the edge of the inner ring of the first silicone pad abuts against the edge of the ink coating hole.

2. The fixture according to claim 1, characterized in that: The first housing further includes a first groove, wherein the first groove includes a first groove body wall and a second groove body wall; The first silicone pad is in contact with the surface of the first tank body wall, and the first silicone pad is in contact with the surface of the second tank body wall.

3. The fixture according to claim 2, characterized in that: The thickness of the first silicone pad is not less than the height of the first tank wall.

4. The fixture according to claim 2, characterized in that: The ink coating hole is opened on the wall of the second tank body.

5. The fixture according to claim 1, characterized in that: The shape of the ink-coating hole includes one or more of a circle, an ellipse, a rectangle, a diamond or a spindle.

6. The fixture according to claim 1, characterized in that: The second shell includes a second groove, and at least one second silicone pad is located in the second groove.

7. The fixture according to claim 6, characterized in that: The shape of the second silica gel pad includes one or more of a ring shape, a circle, an ellipse, a rectangle or a diamond shape.

8. An ink coating system, characterized in that: The inking system comprises a lens, an inking device and the jig according to any one of claims 1 to 7.

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