Light source switching device for optical antenatal care detection

Abstract

The invention belongs to the technical field of lens or lens detection, and particularly relates to a light source switching device for optical antenatal care detection.The light source switching device comprises a cylindrical supporting base and a rotating piece, the lower surface of the rotating piece is provided with a mounting cavity matched with the cylindrical supporting base, and the top end of the cylindrical supporting base extends into the mounting cavity; a visible light emitter and an infrared light emitter are arranged on the upper surface of the rotating part, light emitted by the visible light emitter and light emitted by the infrared light emitter are collinear and opposite in direction, the light emitted by the visible light emitter is perpendicular to the axis of the cylindrical supporting seat, and a fixed matching device is arranged between the side wall of the mounting cavity and the cylindrical supporting seat. The fixed matching device can prevent the cylindrical supporting seat from axially falling off from the mounting cavity and can limit the rotating part to rotate relative to the cylindrical supporting seat when the rotating part rotates to a preset position; the problem that the lens or the lens needs to be transferred back and forth between the visible light emitter and the infrared light emitter when the lens or the lens is detected each time is solved.

Description

Technical Field

[0001] This application belongs to the technical field of lens or lens detection, and specifically relates to a light source switching device for optical prenatal examination detection. Background Art

[0002] When detecting a lens or a glass lens, it is necessary to irradiate light onto the lens or the glass lens, and then place a light receiving sensor on the side of the lens or the glass lens facing away from the light. The light transmission efficiency of the lens or the glass lens is judged by the angle and area of the light received by the light receiving sensor. Therefore, in order to ensure the accuracy of the test results, it is necessary to use visible light and infrared light for detection respectively. And every time when detecting, it is necessary to transfer the lens or the glass lens. For example, after placing the lens or the glass lens at the position of visible light to detect the result, it is also necessary to transfer the lens or the glass lens to the infrared light for infrared light detection, which makes the operation cumbersome. Summary of the Invention

[0003] The purpose of this application is to address the shortcomings of the prior art. By arranging a visible light emitter and an infrared light emitter on a cylindrical support base through a rotating member, and making the angle between the light emitted by the visible light emitter and the light emitted by the infrared light emitter be 180°, the influence of simultaneous emission of infrared light and visible light on the detection result is avoided, and the problem that it is necessary to transfer the lens or the glass lens back and forth between the visible light emitter and the infrared light emitter every time when detecting the lens or the glass lens is solved.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A light source switching device for optical prenatal examination detection, comprising a cylindrical support base and a rotating member. The lower surface of the rotating member is provided with an installation cavity that cooperates with the cylindrical support base. The top end of the cylindrical support base extends into the installation cavity. The upper surface of the rotating member is provided with a visible light emitter and an infrared light emitter. The light emitted by the visible light emitter and the light emitted by the infrared light emitter are collinear and in opposite directions. The light emitted by the visible light emitter is perpendicular to the axis of the cylindrical support base. A fixed cooperation device is provided between the side wall of the installation cavity and the cylindrical support base. The fixed cooperation device can prevent the cylindrical support base from axially falling off from the installation cavity and can limit the rotation of the rotating member relative to the cylindrical support base when the rotating member rotates to a preset position.

[0006] Preferably, the fixed cooperation device includes a sliding hole, a flange, a pressing member, a ball, and a sliding groove. The sliding hole is provided through the side wall of the installation cavity. The pressing member is arranged in the sliding hole and is slidably connected to the sliding hole. A ball is provided at one end of the upper surface of the pressing member close to the cylindrical support seat. A flange cooperating with the pressing member is coaxially provided on the cylindrical support seat. An annular sliding groove is coaxially provided on the lower surface of the flange. A limiting groove is provided on the inner side wall of the sliding groove facing away from the cylindrical support seat corresponding to directly below the visible light emitter and directly below the infrared light emitter respectively. The ball can be snap-fitted with the limiting groove. The pressing member is fixedly connected to the side wall of the installation cavity through an elastic member.

[0007] Preferably, the width of the sliding groove is greater than the radius of the ball. The limiting groove is provided on the inner side wall of the sliding groove facing away from the cylindrical support seat, and the lower end of the limiting groove extends outside the side wall of the sliding groove. When the elastic member is in a normal state, the ball is located in the limiting groove. When the elastic member is squeezed, the ball is located in the sliding groove.

[0008] Preferably, a fixing plate is radially provided in the sliding hole. The fixing plate is parallel to the axis of the cylindrical support seat. A through groove is provided on the pressing member, and the through groove penetrates the upper surface and the lower surface of the pressing member. One end of the fixing plate extends into the through groove, and the fixing plate is fixedly connected to the through groove through an elastic member.

[0009] Preferably, the rotating member includes an upper mounting plate and a lower mounting plate. The lower surface of the upper mounting plate is the bottom wall of the installation cavity. The side wall of the installation cavity is provided on the lower mounting plate. The upper mounting plate and the lower mounting plate are fixedly installed through bolts. The lower end of the fixing plate is fixedly connected to the inner bottom wall of the sliding hole, and the upper end of the fixing plate is a free end.

[0010] Preferably, an installation fixator is provided at the lower end of the cylindrical support seat.

[0011] Preferably, the installation fixator includes a fixing frame. The shape of the fixing frame is U-shaped. The lower end of the cylindrical support seat is fixedly connected to one U-shaped outer side wall of the fixing frame.

[0012] Preferably, a screw hole is provided through the other outer side wall of the fixing frame. A threaded rod is provided in the screw hole. The two ends of the threaded rod are threadedly connected to the screw hole. A top plate is fixedly rotatably provided at one end of the threaded rod located in the screw hole. The top plate is parallel to the U-shaped side wall of the fixing frame.

[0013] Preferably, a turntable is coaxially fixedly connected to one end of the threaded rod outside the fixing frame.

[0014] The present invention has the following beneficial effects:

[0015] In this application, a visible light emitter and an infrared light emitter are simultaneously arranged on a cylindrical support base through a rotating member, and the included angle between the light emitted by the visible light emitter and the light emitted by the infrared light emitter is 180°. This avoids the influence of the simultaneous emission of infrared light and visible light on the detection result, and solves the problem that each time when detecting a lens or a lens, it is necessary to transfer the transfer lens or lens back and forth between the visible light emitter and the infrared light emitter. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of this application;

[0017] Figure 2 For showing Figure 1 Schematic diagram of the bottom structure;

[0018] Figure 3 is a schematic structural diagram of the split upper mounting plate and lower mounting plate of this application;

[0019] Figure 4 is a partial schematic diagram of this application showing the sliding hole;

[0020] Figure 5 is a schematic structural diagram of this application showing the sliding groove and the limiting groove.

[0021] Wherein, 1, cylindrical support base; 2, rotating member; 21, upper mounting plate; 22, lower mounting plate; 3, visible light emitter; 4, infrared light emitter; 51, pressing member; 52, ball; 53, sliding groove; 54, limiting groove; 55, through groove; 56, fixing plate; 57, spring; 6, auxiliary component; 61, fixing frame; 62, threaded rod; 63, top plate; 7, sliding hole; 8, flange; 9, turntable. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Referring to Figures 1-5 , a light source switching device for optical prenatal examination includes a cylindrical support base 1 and a rotating member 2. The lower surface of the rotating member 2 is provided with a mounting cavity cooperating with the cylindrical support base 1. The top end of the cylindrical support base 1 extends into the mounting cavity. The upper surface of the rotating member 2 is provided with a visible light emitter 3 and an infrared light emitter 4. The light emitted by the visible light emitter 3 and the light emitted by the infrared light emitter 4 are collinear and in opposite directions. The light emitted by the visible light emitter 3 is perpendicular to the axis of the cylindrical support base 1. A fixed cooperation device is provided between the side wall of the mounting cavity and the cylindrical support base 1. The fixed cooperation device can prevent the cylindrical support base 1 from axially falling off from the mounting cavity and can limit the relative rotation of the rotating member with respect to the cylindrical support base 1 when the rotating member 2 rotates to a preset position.

[0023] In this embodiment, after the cylindrical support base 1 is inserted into the installation cavity, the rotating member 2 can rotate on the cylindrical support base 1 with the cylindrical support base 1 as the rotation axis. When it is necessary to detect a lens or a lens through visible light, the rotating member 2 is rotated to align the visible light emitter with the position on the lens or lens that needs to be detected. When it is necessary to switch to infrared to detect the lens or lens, the rotating member 2 is rotated 180° on the cylindrical support base 1. Moreover, after rotating 180°, the infrared light emitter 4 still irradiates the position on the lens or lens that needs to be detected. The arrangement that the light emitted by the visible light emitter 3 and the light emitted by the infrared light emitter 4 are collinear and in opposite directions ensures that visible light and infrared light do not interfere with each other when detecting a lens or a lens, that is, the situation where both visible light and infrared light irradiate the lens or lens does not occur. The fixed cooperation device can prevent the cylindrical support base 1 from axially falling off from the installation cavity and can limit the relative rotation of the rotating member 2 with respect to the cylindrical support base 1 when the rotating member 2 rotates to a preset position.

[0024] As a preferred embodiment, the fixed mating device includes a sliding hole 7, a flange 8, a pressing member 51, a ball 52, and a sliding groove 53. The sliding hole 7 is penetrated through the side wall of the installation cavity. The pressing member 51 is disposed in the sliding hole 7 and is slidably connected to the sliding hole 7. One end of the upper surface of the pressing member 51 close to the cylindrical support base 1 is provided with the ball 52. The cylindrical support base 1 is coaxially provided with the flange 8 that cooperates with the pressing member 51. The lower surface of the flange 8 is coaxially provided with an annular sliding groove 53. On the inner side wall of the sliding groove 53 facing away from the cylindrical support base 1 and directly below the visible light emitter 3 and directly below the infrared light emitter 4, a limiting groove 54 is provided respectively. The ball 52 can be snap-fitted with the limiting groove 54. The pressing member 51 is fixedly connected to the side wall of the installation cavity through an elastic member 57. After such a setting, due to the arrangement of the flange 8 and the pressing member 51, an axial limit is formed between the rotating member 2 and the cylindrical support base 1, so that the rotating member 2 will not fall off the cylindrical support base 1. However, the arrangement of the flange 8 and the pressing member 51 does not form a rotational limit between the rotating member 2 and the cylindrical support base 1. When it is necessary to switch from infrared light to the visible light emitter 3 to emit light toward the back-detection lens or lens, first hold down the pressing member 51 so that the ball 52 exits from the limiting groove 54 directly below the infrared light emitter 4 into the sliding groove 53, and then the rotating member 2 can be rotated. After the rotating member 2 rotates in place, release the pressing member 51. The pressing member 51 moves away from the cylindrical support base 1, causing the ball 52 to enter the limiting groove 54 directly below the visible light emitter 3 from the sliding groove 53. At this time, the ball 52 and the limiting groove 54 together form a rotational limit between the rotating member 2 and the cylindrical support base 1. The arrangement of the ball 52 not only facilitates entering and exiting the limiting groove 54, but also can play a role in rotational limiting between the rotating member 2 and the cylindrical support base 1 after entering the limiting groove 54. The elastic member 57 is a spring.

[0025] Specifically, the width of the sliding groove 53 is greater than the radius of the ball 52. The limiting groove 54 is provided on the inner side wall of the sliding groove 53 facing away from the cylindrical support base 1, and the lower end of the limiting groove 54 extends outside the side wall of the sliding groove 53. When the elastic member 57 is in a normal state, the ball 52 is located in the limiting groove 54. When the elastic member 57 is squeezed, the ball 52 is located in the sliding groove 53.

[0026] Specifically, a fixing plate 56 is radially provided in the sliding hole 7. The fixing plate 56 is parallel to the axis of the cylindrical support base 1. A through groove 55 is provided on the pressing member 51. The through groove 55 penetrates the upper surface and the lower surface of the pressing member 51. One end of the fixing plate 56 extends into the through groove 55. The fixing plate 56 is fixedly connected to the through groove 55 through an elastic member 57. In this way, through the combined action of the fixing plate 56 and the elastic member 57, the pressing member 51 is installed.

[0027] As a preferred embodiment, the rotating member 2 includes an upper mounting plate 21 and a lower mounting plate 22. The lower surface of the upper mounting plate 21 is the bottom wall of the mounting cavity. The side wall of the mounting cavity is provided on the lower mounting plate 22. The upper mounting plate 21 and the lower mounting plate 22 are fixedly installed by bolts. The lower end of the fixing plate 56 is fixedly connected to the inner bottom wall of the sliding hole 7. The upper end of the fixing plate 56 is a free end. This setting facilitates the installation of the pressing member 51 into the sliding hole 7 and is convenient for assembly during manufacturing.

[0028] As a preferred embodiment, an installation fixture 6 is provided at the lower end of the cylindrical support base 1. By providing the fixture 6, the cylindrical support base 1 can be fixed on a bracket (not shown in the figure, a common bracket is sufficient).

[0029] As a preferred embodiment, the installation fixture 6 includes a fixing frame 61. The shape of the fixing frame 61 is U-shaped. The lower end of the cylindrical support base 1 is fixedly connected to one U-shaped outer side wall of the fixing frame 61. After this setting, it is only necessary to sleeved the U-shaped structure of the fixing frame 61 on the cross beam or track of the bracket.

[0030] As a preferred embodiment, a screw hole is penetrated through the other outer side wall of the fixing frame 61. A threaded rod 62 is provided in the screw hole. The two ends of the threaded rod 62 are threadedly connected to the screw hole. A top plate 63 is fixedly rotatably provided at one end of the threaded rod 62 located in the screw hole. The top plate 63 is parallel to the U-shaped side wall of the fixing frame 61. After this setting, during fixing, by rotating the threaded rod 62, a clamping device is formed between the top plate 63 and the U-shaped inner side wall of the fixing frame 61 provided with the screw hole, so as to facilitate the fixing of the cylindrical support base 1 on the bracket.

[0031] As a preferred embodiment, a turntable 9 is coaxially fixedly connected to the end of the threaded rod 62 outside the fixing frame 61. By providing the turntable 9, it is convenient to rotate the threaded rod 62.

Claims

1. A light source switching device for optical prenatal examination detection, characterized in that: It includes a cylindrical support base (1) and a rotating member (2). An installation cavity matching with the cylindrical support base (1) is provided on the lower surface of the rotating member (2). The top end of the cylindrical support base (1) extends into the installation cavity. A visible light emitter (3) and an infrared light emitter (4) are provided on the upper surface of the rotating member (2). The light emitted by the visible light emitter (3) and the light emitted by the infrared light emitter (4) are collinear and in opposite directions. The light emitted by the visible light emitter (3) is perpendicular to the axis of the cylindrical support base (1). A fixed matching device is provided between the side wall of the installation cavity and the cylindrical support base (1). The fixed matching device can prevent the cylindrical support base (1) from axially falling off from the installation cavity and can limit the rotation of the rotating member relative to the cylindrical support base (1) when the rotating member (2) rotates to a preset position.

2. The light source switching device for optical prenatal examination detection according to claim 1, wherein The fixed matching device includes a sliding hole (7), a flange (8), a pressing member (51), a ball (52), and a sliding groove (53). The sliding hole (7) is penetrated through the side wall of the installation cavity. The pressing member (51) is arranged in the sliding hole (7) and is slidably connected with the sliding hole 7. A ball (52) is provided at one end of the upper surface of the pressing member (51) close to the cylindrical support base (1). A flange (8) matching with the pressing member (51) is coaxially provided on the cylindrical support base (1). A ring-shaped sliding groove (53) is coaxially provided on the lower surface of the flange (8). A limiting groove (54) is provided on the inner side wall of the sliding groove (53) facing away from the cylindrical support base (1) corresponding to directly below the visible light emitter (3) and directly below the infrared light emitter (4). The ball (52) can be clamped and matched with the limiting groove (54). The pressing member (51) is fixedly connected with the side wall of the installation cavity through an elastic member (57).

3. The light source switching device for optical antenatal examination according to claim 2, characterized in that, The width of the sliding groove (53) is greater than the radius of the ball (52). The limiting groove (54) is provided on the inner side wall of the sliding groove (53) facing away from the cylindrical support base (1). The lower end of the limiting groove (54) extends outside the side wall of the sliding groove (53). When the elastic member (57) is in a normal state, the ball (52) is located in the limiting groove (54). When the elastic member (57) is squeezed, the ball (52) is located in the sliding groove (53).

4. The light source switching device for optical antenatal examination detection according to claim 2, characterized in that: A fixing plate (56) is radially provided in the sliding hole (7). The fixing plate (56) is parallel to the axis of the cylindrical support base (1). A through groove (55) is provided on the pressing member (51). The through groove (55) penetrates through the upper surface and the lower surface of the pressing member (51). One end of the fixing plate (56) extends into the through groove (55). The fixing plate (56) is fixedly connected with the through groove (55) through an elastic member (57).

5. The light source switching device for optical prenatal examination detection according to claim 4, characterized in that: The rotating member (2) includes an upper mounting plate (21) and a lower mounting plate (22). The lower surface of the upper mounting plate (21) is the bottom wall of the mounting cavity. The side wall of the mounting cavity is provided on the lower mounting plate (22). The upper mounting plate (21) and the lower mounting plate (22) are fixedly installed by bolts. The lower end of the fixing plate (56) is fixedly connected to the inner bottom wall of the sliding hole (7), and the upper end of the fixing plate (56) is a free end.

6. The light source switching device for optical prenatal examination detection according to claim 1, characterized in that: An installation fixture (6) is provided at the lower end of the cylindrical support base (1).

7. The light source switching device for optical prenatal examination detection according to claim 6, characterized in that: The installation fixture (6) includes a fixing frame (61). The shape of the fixing frame (61) is U-shaped. The lower end of the cylindrical support base (1) is fixedly connected to one U-shaped outer side wall of the fixing frame (61).

8. The light source switching device for optical prenatal examination detection according to claim 7, characterized in that: A screw hole is penetrated through the other outer side wall of the fixing frame (61). A threaded rod (62) is provided in the screw hole. The two ends of the threaded rod (62) are threadedly connected to the screw hole. A top plate (63) is fixedly and rotatably provided at one end of the threaded rod (62) located in the screw hole. The top plate (63) is parallel to the U-shaped side wall of the fixing frame (61).

9. The light source switching device for optical antenatal examination detection according to claim 8, characterized in that: One end of the threaded rod (62) outside the fixing frame (61) is coaxially fixedly connected to a turntable (9).

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