TWM594696U - Filter electromagnetic drive structure of photographic lens - Google Patents

Abstract

A filter electromagnetic drive structure of a photographic lens, including: a lens holder provided with a lens barrel, a drive unit with an iron core, a coil, a rocker, and a power cord to provide switching action, and a slide that can be moved back to reset Film, and a bottom cover provided with a window hole; wherein, the slide plate is pasted with an IR filter and an AR filter, and is connected to the movable end of the rocker; the bottom cover is combined with the lens holder to further clamp the The slider allows it to slide left and right; by this, one of the power cords is energized to magnetize the iron core on one side, which will swing the rocker to drive the displacement of the slider, and the IR filter is aligned with the window hole to prevent infrared rays from entering; When the other power cord is energized to magnetize the core on the other side, the slider moves the AR filter to the front window hole due to the reverse displacement, thereby increasing the intensity of light penetration.

Description

Filter electromagnetic drive structure of photographic lens

This creation is about a kind of photographic lens, especially a kind of photographic lens that uses iron core magnetization to drive the switch between the IR filter and the AR filter, so that they respectively face the light-transmitting windows to block infrared rays and enhance the light penetration intensity. Filter electromagnetic drive structure.

Press, the filter is an auxiliary tool used on the camera lens. The timing of its activation depends on the ambient light intensity detected by the camera sensor. When the daylight is strong, the light captured by the camera lens It will cause the image to be too bright, so it is necessary to activate the filter to filter out the ultraviolet, infrared and other light energy that is invisible to the naked eye, so that the camera lens can capture the appropriate amount of light and image, and the image color and The colors seen by the human eye are the same; and when the light is insufficient at night, even the light energy that is invisible to the naked eye also helps to improve the resolution of the image, so the filter needs to be removed at this time, so that the infrared light of the supplementary light and the natural world The infrared ray enters to enhance the illumination of the image sensor, and then the photographic image can be clear.

As shown in FIG. 1, it is a schematic diagram of a conventional photographic lens switching filter; the switching action is: when the filter 972 needs to be used during the day, the driving motor 980 will use the linkage rod 981 to drive the sliding plate 970, causing the sliding The window with the filter 972 attached to the film 970 is aligned with the window hole 961 of the housing 960 to perform the filtering action of the photographic lens; when the filter 972 is not needed at night, the sliding film is driven by the driving motor 980 The window 970 does not have the filter 972 aligned with the window hole 961 of the housing 960. Since the above filter driving structure uses the driving motor 980 to drive the sliding sheet 970 to achieve the switching of the filter 972, the driving motor 980 has a large volume and must occupy a relatively large accommodating space of the housing 960, so that monitoring The volume of the system cannot be effectively reduced, which reduces the hidden characteristics. Therefore, how to reduce the driving mechanism has become a problem to be solved in this field.

Press again. Recently, due to the improvement of photography technology and the pursuit of image quality, IR filters and AR filters are mostly installed in the filter devices of cameras; among them, IR filters refer to infrared (IR) filters. The light sheet is used to isolate the infrared rays of visible light from entering, to avoid the infrared light from affecting the normal picture presentation, and to ensure that the visible light can pass through smoothly. Therefore, the IR lens is suitable for the camera lens during the daytime; the AR filter refers to anti-reflection (Anti-Reflection referred to as AR) filter, which is used to reduce the reflection of visible light and reduce glare to enhance the brightness of the image or light. Therefore, the AR lens is suitable for the photography lens at night; the creator understands IR filter Films and AR filters are helpful to photographic images, so how to effectively use the functions of IR filters and AR filters in the structure of switching filters is a subject that the creator needs to think about.

The reason is that the main purpose of this creation is to provide a filter drive structure for a photographic lens that can drive a filter without using a drive motor, so that the volume of the drive structure can be reduced.

Another purpose of this creation is to provide a filter device with both IR filters and AR filters, which can be effectively switched to improve the quality of photographic images.

In order to achieve the above purpose, the technical means adopted in this creation include: a lens holder equipped with a lens barrel, a drive unit providing a switching action, a slide that can be moved back and forth, and a bottom cover provided with a window hole; Wherein, the bottom cover is provided with a first accommodating chamber and a second accommodating chamber, and the driving unit is placed in the second accommodating chamber, which has an iron core and coils individually wound on both sides of the iron core The movable end of the rod is connected to the slide, the pivot end is pivotally connected to the bottom cover with a mandrel, and the inner edge of the pivot end is provided with a magnetic metal, two power cords, one of the ends is connected to the coil, and the other One end is connected to an external power supply; the slide is placed in the first accommodating chamber, and is connected to the movable end of the rocker, and the IR filter and AR filter are pasted on the frame, and the half of the long hole is individually shielded The width of the bottom cover is combined with the lens holder, so that the window hole is aligned with the lens barrel, and then the slide is clamped to slide left and right.

By this, energizing one of the power cords will make the coil connected to it conductive to magnetize the core on the side, the core will attract the magnetic metal to pivot the pivot end, then the rocker will swing and drive the slider Displacement causes the IR filter to align with the window hole to achieve the effect of blocking the entry of infrared rays; energizing another power cord will magnetize the core on the other side, and the rocker will swing in the opposite direction to drive the slide Displacement, so that the AR filter is aligned with the window hole to enhance the intensity of light penetration.

With the help of the uncovered features, the electromagnetic drive structure of the filter of the creative photography lens has the following benefits: (1) This creative system uses iron core magnetization to attract magnetic metal, and the rocker swings to drive the sliding plate displacement, so that the IR filter and the AR filter can be aligned with the window respectively, so there is no need to provide a separate drive motor, etc. Components, so the volume of the drive unit and the lens holder can be reduced. (2) In this creation, the IR filter and the AR filter are pasted into the frame of the slide, and the IR filter and the AR filter are individually shielded by half the width of the long hole. The IR can be filtered by the displacement of the slide The film and the AR filter can be aligned with the window holes, so this creation will switch the displacement of the slide, and will simultaneously exert the filtering benefits of the IR filter and the AR filter, thereby improving the quality of the photographic image.

First of all, please refer to FIGS. 2 to 3, the filter electromagnetic driving structure 100 for the creative photography lens includes: a lens holder 10, a driving unit 20, a slide 30, and a bottom cover 50, wherein, The lens holder 10 has a lens barrel 11 on the front side to collect light; the slide 30 is provided with a long hole 32 in the frame 31; an IR filter 33 and an AR filter are adhered to the rear edge of the frame 31 34, and make them individually cover half of the width of the long hole 32; the bottom cover 50 is provided with a first accommodating chamber 52 and a second accommodating chamber 53 adjacent thereto, the first accommodating chamber 52 is provided with a through Through the window hole 51, the slide 30 is placed in the first accommodating chamber 52, and the bottom cover 50 is placed behind the lens holder body 10 and combined with a fixing member (not shown) to make The window hole 51 is aligned with the lens barrel 11, and then the slider 30 is clamped to slide left and right between the lens holder body 10 and the bottom cover 50; the driving unit 20 is placed in the second container In the chamber 53, it has an iron core 21 and coils 22 wound on both sides of the iron core 21, a rocker 23, its movable end 231 is connected to the slide 30, and its pivot end 232 is pivotally connected to a mandrel 24 The bottom cover 50 is placed in the center of the iron core 21, and a magnetic metal 25 is installed on the inner edge of the pivoting end 232, so that the magnet 21 on either side can attract the magnetic metal 25 after being magnetized, and then the rocker The movable end 231 of 23 swings; two power cords 26, one of the ends is connected to the coil 22, and the other end is connected to an external power supply (not shown).

The action of switching filters in this creation is shown in Figures 4A-4B. When the daylight is strong and IR filters 33 are needed, energizing one of the power cords 26 will make the coil 22 connected to it conductive and magnetize the The core 21 on the side, the core 21 will attract the magnetic metal 25 to pivot the pivoting end 232, then the rocker 23 will swing and drive the slider 30 to move, so that the IR filter 33 is aligned with the window 51 In order to prevent infrared rays from entering, as shown in FIG. 4A; when the light is dark at night and the AR filter 34 is needed, energizing the other power cord 26 will magnetize the iron core 21 on the other side, and the rocker 23 will be reversed The swing drives the sliding plate 30 to reverse displacement, so that the AR filter 34 is aligned with the window hole 51 to increase the intensity of light penetration, as shown in FIG. 4B.

Since this creative system uses the iron core 21 to magnetize and absorb the magnetic metal 25, the rocker 23 swings to drive the slider 30 to move, so that the IR filter 33 and the AR filter 34 can be aligned with the window hole 51, so there is no need In addition, the drive motor and other components are provided, so that the volume of the drive unit 20 and the lens holder 10 can be reduced; furthermore, in this creation, the IR filter 33 and the AR filter 34 are pasted into the frame 31 of the slide 30, and the The IR filter 33 and the AR filter 34 individually cover half of the width of the long hole 32. The displacement of the slide 30 allows the IR filter 33 and the AR filter 34 to be respectively aligned with the window hole 51. The displacement switching of the film 30 will simultaneously exert the filtering benefits of the IR filter 33 and the AR filter 34, thereby improving the quality of the photographic image.

In summary, the structure disclosed in this creation is unprecedented, and it can indeed achieve the improvement of efficiency, and it can be used by the industry. It is fully in line with the requirements of new patents. Pray that the Office will grant patents to encourage innovation , No sense of virtue.

However, the diagrams and descriptions disclosed above are only the preferred embodiments of this creation. Anyone who is familiar with this skill, and the modifications or equivalent changes made in accordance with the spirit of this case, should still be included in the scope of the patent application in this case.

10: lens mount 11: lens barrel 20: Drive unit 21: Iron core 22: coil 23: Joystick 231: Active side 232: pivot end 24: mandrel 25: magnetic metal 26: Power cord, 30: Slide 31: Frame 32: Long hole 33: IR filter 34: AR filter 50: bottom cover 51: window hole 52: First storage room 53: Second storage room 100: Electromagnetic drive structure of filter of photographic lens

Figure 1: Schematic diagram of the structure of a switching filter used in a photographic lens. Figure 2: This is an exploded perspective view of the electromagnetic drive structure of the filter of the creative photography lens. Figure 3: This is a combined perspective view of the electromagnetic driving structure of the filter of the creative photography lens. Figure 4A: Schematic diagram of the IR filter of this creative photography lens. Figure 4B: Schematic diagram of the AR filter of this creative photography lens switch.

10: lens mount

11: lens barrel

20: Drive unit

21: Iron core

22: coil

23: Joystick

231: Active side

232: pivot end

24: mandrel

25: magnetic metal

26: Power cord

30: Slide

31: Frame

32: Long hole

33: IR filter

34: AR filter

50: bottom cover

51: window hole

52: First storage room

53: Second storage room

100: Electromagnetic drive structure of filter of photographic lens

Claims (1)

A filter electromagnetic drive structure for photographic lens, including: A lens holder with a lens barrel on the front side to collect light; A slide plate with a long hole penetrating through the frame, an IR filter and an AR filter are adhered to the rear edge of the frame, and the half of the width of the long hole is individually shielded; A bottom cover is provided with a first accommodating chamber and a second accommodating chamber adjacent to it, the first accommodating chamber is provided with a penetrating window hole, and the sliding piece is placed in the first accommodating chamber, And the bottom cover is placed on the rear side of the lens holder and is combined with a fixing member, so that the window hole is aligned with the lens barrel, and then the slide plate is clamped so as to be left and right between the lens holder and the bottom cover slide; A driving unit is placed in the second accommodating chamber, which has an iron core and coils wound on both sides of the iron core separately, a rocker, the movable end of which is connected to the slide, and the pivot end of which is pivoted by a mandrel Connected to the bottom cover and placed in the center of the core, a magnetic metal is installed on the inner edge of the pivot end, so that the magnetic core can be attracted to the magnetic metal after being magnetized on either side, thereby generating the movable end of the rocker Swing; two power lines, one of the ends is connected to the coil, and the other end is connected to an external power supply; By this, energizing one of the power cords will make the coil connected to it conductive to magnetize the core on the side, the core will attract the magnetic metal to pivot the pivot end, then the rocker will swing and drive the slider Displacement causes the IR filter to align with the window hole to achieve the effect of blocking the entry of infrared rays; energizing another power cord will magnetize the core on the other side, and the rocker will swing in the opposite direction to drive the slide Displacement, so that the AR filter is aligned with the window hole to enhance the intensity of light penetration.

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