Laser diffraction optical grid drawing and line drawing device for calligraphy

Abstract

The utility model relates to a laser diffraction optical grid drawing and line drawing device for calligraphy, which belongs to the technical field of optics and comprises a base, a height adjusting mechanism is arranged above the base and comprises a miniature stepping motor and a miniature lead screw positioned above the miniature stepping motor, and the miniature lead screw is connected with the miniature stepping motor. A screw rod lifting table is arranged above the micro screw rod; the multiple laser sources are located on the lead screw lifting table, and diffractive optical elements are arranged in the multiple laser sources; and the rechargeable battery is positioned on one side of the micro stepping motor on the base. The device can be embedded into a paperweight, a toy model or an ornament, and can realize oblique projection on a horizontal plane at an ultra-large angle and an ultra-low height, so that laser rays can be limited and covered on the surface of a table top, the influence of light reflection on human eyes when the rays are projected on a pen body or a hand is reduced, and the laser projection effect is improved. And a calligraphy beginner can quickly create works on the blank paper.

Description

Technical Field

[0001] The utility model discloses a laser diffraction optical grid-drawing and line-drawing device for calligraphy, which belongs to the technical field of optics. Background Art

[0002] For calligraphy practitioners, it is usually necessary to use grids such as Tianzi grid, Mizi grid or Huimi grid as boundaries and references, which can be convenient for arranging appropriate positions according to the shape and strokes of the copybook when practicing calligraphy, or for reducing and enlarging the font. However, conventional practice paper and work paper do not have grids, or the grid size is fixed. Traditional calligraphy practitioners often need to use origami, hand-drawn lines or ink fountain lines to make grids, which makes grid drawing cumbersome and time-consuming, occupying a lot of calligraphy practitioners' calligraphy practice time. Using a grid ruler is not portable, requires a large space, and the grid size adjustment is cumbersome or cannot be adjusted, making it difficult to achieve unconventional stroke designs.

[0003] Existing laser grid punchers or paperweights that use a straight-line laser head use a high-power laser to clearly display light on paper from a long distance, which makes a single laser too expensive, consumes a lot of power, wastes energy, and cannot be used for a long time in the form of a recharge. Many laser heads are required for actual use, which further leads to the high price of traditional straight-line laser grid punchers or paperweights. Traditional laser grid punches have high laser power and many light sources, which can easily cause harm to the human eye and body.

[0004] Existing diffraction laser grid lights will form an ultra-bright spot in the center of the projection pattern, seriously affecting the viewing experience. If they are far away from the desktop, the volume occupied by the laser in the space will be too large, resulting in a large amount of light being projected onto the human body during use, which may cause harm to the human body. Utility Model Content

[0005] In order to solve the problems existing in the prior art of laser gridding, such as high laser power, multiple light sources, and easy harm to human eyes and body, we proposed a laser diffraction optical grid drawing device for calligraphy.

[0006] The utility model is a laser diffraction optical grid-drawing device for calligraphy, such as Figures 1 to 3 As shown, the device comprises:

[0007] A base 1, wherein a height adjustment mechanism is provided above the base 1, wherein the height adjustment mechanism comprises a micro-stepping motor 2 and a micro-screw 3 located above the micro-stepping motor 2, and a screw lifting platform 4 is provided above the micro-screw 3;

[0008] A plurality of laser sources 5 located on the screw lifting platform 4, each of the laser sources 5 is provided with a diffractive optical element 6;

[0009] It also includes: a rechargeable battery 7 located on one side of the micro stepping motor 2 on the base 1.

[0010] Furthermore, a vertical plate 8 is disposed on the base 1 , and a control circuit board 9 is disposed on the back side of the vertical plate 8 .

[0011] Furthermore, the laser source 5 is a laser with adjustable brightness.

[0012] Furthermore, the diffractive optical element 6 is a DOE diffraction grating.

[0013] The beneficial effects of the utility model are:

[0014] The device of the utility model can be embedded in a paperweight, a toy model or an ornament, and can realize oblique projection on a horizontal plane at an ultra-large angle and an ultra-low height, so that the laser light can be limited to cover the surface of the desktop, reducing the impact of light reflection on the human eye when the light is projected on the pen body or the hand.

[0015] The utility model device is designed to reduce the power of the laser source as much as possible for the sake of human health and adopt a laser with a wavelength of a certain light intensity that is harmless to the human body. By reducing the distance between the laser source and the horizontal plane (such as a desktop) as much as possible, the volume covered by the laser area in the space is reduced, thereby reducing the harm of the laser to the human body.

[0016] The device of the utility model can effectively solve the problem that calligraphy beginners can quickly create works of art on blank paper during calligraphy learning, and meets the need of making grids in the process of practicing calligraphy without affecting the actual writing experience, saving preparation time for practicing calligraphy, and effectively reducing the number of laser sources, reducing fatigue of the human eye caused by long-term viewing of multiple high-brightness laser sources, and the device is small in size, simple and portable, low in power consumption, and can be easily combined with products of different shapes in the future to meet people's needs for personalization. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model, wherein Figure 1 Attached as abstract.

[0018] Figure 2 It is a schematic diagram of the structure of the laser source 5 and the diffractive optical element 6 in the utility model.

[0019] Figure 3 It is an overall top view schematic diagram of the utility model.

[0020] Description of the drawings:

[0021] 1. Base, 2. Micro stepper motor, 3. Micro lead screw, 4. Lead screw lifting platform, 5. Laser source, 6. Diffractive optical element, 7. Rechargeable battery, 8. Vertical board, 9. Control circuit board. DETAILED DESCRIPTION

[0022] A specific implementation example of the utility model is given below in conjunction with the accompanying drawings to introduce the structure of the utility model in detail. It should be noted that the scope of application of the utility model is not limited to the following embodiments, and all similar structures based on the utility model are within the scope of application of the utility model.

[0023] The utility model is a laser diffraction optical grid-drawing device for calligraphy, such as Figures 1 to 3 As shown, the device comprises:

[0024] A base 1, a height adjustment mechanism is provided above the base 1, the height adjustment mechanism includes a micro-stepping motor 2 and a micro-screw 3 located above the micro-stepping motor 2, the height adjustment mechanism can be replaced by other mechanical structures such as a manual screw, a telescopic rod, etc., and the height adjustment mechanism can also be cancelled so that the projected grid is of a fixed size, and the size change of the laser projection pattern, such as the change of the grid size, is mainly achieved by adjusting the height of the entire device from the horizontal plane, and a screw lifting platform 4 is provided above the micro-screw 3;

[0025] A plurality of laser sources 5 located on the screw lifting platform 4, wherein the laser sources 5 may be laser light sources of different wavelengths, and a diffraction optical element 6 is disposed in each of the plurality of laser sources 5;

[0026] It also includes: a rechargeable battery 7 located on one side of the micro stepping motor 2 on the base 1.

[0027] As a further introduction to this embodiment, a vertical plate 8 is disposed on the base 1 , and a control circuit board 9 is disposed on the back side of the vertical plate 8 .

[0028] As a further introduction to this embodiment, the laser source 5 is a laser with adjustable brightness. When the laser projection pattern becomes larger, the pattern brightness decreases and can be restored to normal by increasing the output power of the laser source 5. A rectifying lens can be added in front of the light source to adjust the light emitted by the laser.

[0029] As a further introduction to this embodiment, the diffractive optical element 6 is a DOE diffraction grating.

[0030] The working principle of the utility model is as follows:

[0031] The device of the utility model is embedded into a paperweight, a model or a desktop ornament at a certain angle and connected to a power supply or a battery. When the laser is working, the laser passes through one or more diffractive optical elements 6, disperses the light and gathers it on the horizontal plane to be projected according to the designed pattern. The laser passing through the diffractive optical element 6 can be completely or partially blocked in its propagation path. The height of the entire device from the horizontal plane is adjusted by the height adjustment mechanism to achieve the size change of the laser projection pattern. By changing the diffractive optical element 6 and changing the area where the light is blocked, the pattern change of the laser projection grid and line drawing can be achieved, such as switching between blank grids, cross grids or reverse cross grids.

[0032] So far, the technical solution of the utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings, but it is easy for those skilled in the art to understand that the protection scope of the utility model is obviously not limited to these specific embodiments. Without departing from the principle of the utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A laser diffraction optical grid-drawing device for calligraphy, characterized in that: The device includes: A base (1), wherein a height adjustment mechanism is provided above the base (1), wherein the height adjustment mechanism comprises a micro-stepping motor (2) and a micro-screw (3) located above the micro-stepping motor (2), and a screw lifting platform (4) is provided above the micro-screw (3); A plurality of laser sources (5) located on the screw lifting platform (4), each of the plurality of laser sources (5) being provided with a diffractive optical element (6); It also includes a rechargeable battery (7) located on one side of the micro stepping motor (2) on the base (1).

2. The laser diffraction optical grid-marking device for calligraphy according to claim 1, characterized in that: A vertical plate (8) is provided on the base (1), and a control circuit board (9) is provided on the back side of the vertical plate (8).

3. The laser diffraction optical grid-marking device for calligraphy according to claim 1, characterized in that: The laser source (5) is a laser whose brightness can be adjusted.

4. The laser diffraction optical grid-marking device for calligraphy according to claim 1, characterized in that: The diffractive optical element (6) is a DOE diffraction grating.

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