Imaging angle and position adjusting device

Abstract

The utility model relates to the technical field, and specifically relates to an imaging angle and position adjusting device comprising a DMD chip used for projecting images; the imaging lens is used for amplifying and displaying an image on the DMD chip; the illumination lens is used for providing an illumination path; the connecting piece is connected with the illumination lens, one side of the connecting piece is communicated with the imaging lens, the DMD chip is fixedly arranged on the other side opposite to the imaging lens, and a lens body is arranged in the connecting piece and used for reflecting light irradiated from the illumination lens to the DMD chip; the adjusting piece is arranged between the illumination lens and the connecting piece and enables the illumination lens to slide in multiple directions, the direction of the lens body is adjusted at different angles through the through holes in different positions, and light is reflected on the DMD chip; the illumination lens can move in multiple directions, the position of the illumination lens is adjusted, and when defocusing is conducted within a certain range, a light spot of the point laser is still located in the center of the optical axis of an image projected through the DMD chip.

Description

Technical Field

[0001] The utility model relates to the technical field of optical instruments, in particular to a device for adjusting imaging angle and position. Background Art

[0002] In modern optical instruments, precise imaging angle and position adjustment are key to achieving high-quality images and data acquisition. Currently, many optical instruments, such as microscopes, projectors, and telescopes, require fine-tuning of the optical system during the imaging process to adapt to different observation requirements and environmental conditions. Traditional adjustment devices usually include manual adjustment components and fixed optical support structures. Although these devices can achieve basic adjustment functions, they have certain limitations in terms of accuracy, stability, and ease of operation. When the point laser spot is irradiated on the center of the DMD chip, the point laser spot is centered on the image optical axis through illumination. When defocusing, the point laser spot deviates from the center of the image optical axis due to the problem of illumination angle, affecting the lens accuracy.

[0003] Therefore, the present application develops a device for adjusting imaging angle and position to solve the problems existing in the prior art. Utility Model Content

[0004] The purpose of the utility model is to provide an imaging angle and position adjustment device to solve the problem in the prior art that the spot of the point laser is offset from the center of the image projected by the DMD chip when defocused due to the problem of illumination angle.

[0005] The technical solution of the utility model is: a device for adjusting imaging angle and position, comprising:

[0006] DMD chip, used to project images;

[0007] Imaging lens, used to magnify and display the image on the DMD chip;

[0008] A lighting lens, used to provide a light path;

[0009] A connector connected to the illumination lens, one side of the connector being connected to the imaging lens, and the other side opposite thereto being fixed with the DMD chip, wherein a mirror body is provided within the connector for reflecting light emitted from the illumination lens onto the DMD chip;

[0010] The adjusting member is arranged between the lighting lens and the connecting member, and enables the lighting lens to slide in multiple directions.

[0011] Preferably, a first slide groove is provided on the side where the connecting member is connected to the adjusting member, the adjusting member is slidably set in the first slide groove, a plurality of first notches are provided on the adjusting member, and the screw passes through the first notch to fix the adjusting member in the first slide groove; a second slide groove is provided on the side of the adjusting member away from the connecting member, a second notch is penetrated and provided on the side of the adjusting member, the second notch is connected to the second slide groove, the lighting lens is set in the second slide groove, and the screw passes through the second notch to fix the lighting lens in the second slide groove.

[0012] Preferably, a plurality of the first notches are arranged along an axis perpendicular to the imaging lens, so that the adjusting member moves in a direction perpendicular to the imaging lens axis, and a pair of the second notches are arranged along an axis parallel to the imaging lens, so that the lighting lens moves along an axis parallel to the imaging lens.

[0013] Preferably, in the axial direction of the imaging lens, the maximum distance between the side of the lighting lens and the side of the adjacent second slide groove is less than the length of the second slot, and in the axial direction perpendicular to the lens, the maximum distance between the side of the adjusting member and the side of the adjacent first slide groove is less than the length of the first slot.

[0014] Preferably, the mirror body is located on the lighting path of the lighting lens, and the reflective surface of the mirror body is tilted toward the DMD chip.

[0015] Preferably, the mirror body is fixed to the side of the connecting piece opposite to the lighting lens by a locking screw, and a plurality of through holes are penetrated on the side opposite to the lighting lens. The plurality of through holes are distributed around the locking screw with the locking screw as the center, and are used to adjust the angle of the mirror body.

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] (1) Adjust the direction of the mirror at different angles through the through holes at different positions to reflect light onto the DMD chip;

[0018] (2) The illumination lens can be moved in multiple directions and its position can be adjusted so that the spot of the point laser is still at the center of the optical axis of the image projected by the DMD chip within a certain range of defocus. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0020] Figure 1 This is a schematic structural diagram of a device for adjusting imaging angle and position according to the present invention;

[0021] Figure 2 This is an exploded view of the installation of the connecting piece and the lighting lens of the utility model;

[0022] Figure 3 This is a side view of the assembly of the connecting piece and the lighting lens of the utility model;

[0023] Figure 4 This is a side sectional view of the assembly of the connector and the lighting lens of the utility model;

[0024] Figure 5 A top view of the assembly of the connector and the lighting lens of the utility model;

[0025] Figure 6 This is a diagram of the internal structure of the connector of the present invention;

[0026] Figure 7 This is a diagram showing the positional relationship between the through hole and the connecting piece of the present invention.

[0027] Among them: 1. DMD chip; 2. Imaging lens; 3. Illumination lens; 4. Connector; 41. First slide groove; 42. Through hole; 5. Mirror body; 6. Adjustment member; 61. First notch; 62. Second slide groove; 63. Second notch. DETAILED DESCRIPTION

[0028] The following is a further detailed description of the present invention in conjunction with specific embodiments:

[0029] like Figures 1-6 As shown, a device for adjusting the imaging angle and position includes a DMD chip 1, an imaging lens 2, an illumination lens 3, a connector 4, and an adjusting member 6. One side of the connector 4 is connected to the illumination lens 3, and the DMD chip 1 is fixedly arranged on the other side opposite to the illumination lens 3. A mirror body 5 is also provided in the connector 4. The mirror body 5 is located on the illumination path of the illumination lens 3, and the reflecting surface of the mirror body 5 is tilted toward the DMD chip 1. When a point laser enters from one end irradiated by the illumination lens 3, it is reflected onto the mirror body 5 through the illumination lens 3. The mirror body 5 reflects the reflected light onto the DMD chip 1, and the DMD chip 1 projects the image onto the imaging lens 2. By adjusting the position of the adjusting member 6, the light spot of the point laser is located at the center of the image optical axis, ensuring the clarity and accuracy of the image, reducing the distortion of the image caused by the deviation of the optical path, thereby improving the resolution and clarity of the image, and at the same time helping to ensure that the light received by each micromirror unit on the DMD chip 1 is uniform and accurate, so that each pixel can correctly reflect the image information, thereby improving the accuracy of the overall imaging.

[0030] like Figure 3-Figure 5As shown, a first slot 41 is provided on the side where the connecting member 4 is connected to the adjusting member 6, and the adjusting member 6 is slidably arranged in the first slot 41. A second slot 62 is provided on the side of the adjusting member 6 away from the connecting member 4, and the lighting lens 3 is arranged in the second slot 62 and slides in the second slot 62. By sliding the adjusting member 6 in the first slot 41 and the lighting lens 3 in the second slot 62, the light path of the point laser reflected through the lighting lens 3 on the lens body 5 changes, and the position of the point laser on the image optical axis is changed. By continuously adjusting the position, the lighting lens 3 is moved to a suitable position to ensure that the point laser spot is still in the center of the image optical axis within a certain range of defocus, which can simplify the calibration and debugging process and improve work efficiency. Keeping the point laser spot in the center of the optical axis can reduce image quality problems caused by optical path offset, thereby reducing the cost caused by frequent adjustment and maintenance of equipment.

[0031] Furthermore, a plurality of first slots 61 are provided on the adjusting member 6, and a second slot 63 is provided on the side of the adjusting member 6 and is connected to the second slide groove 62. The screw passes through the first slot 61 to fix the adjusting member 6 in the first slide groove 41, and the screw passes through the second slot 63 to fix the lighting lens 3 in the second slide groove 62. When the adjusting member 6 slides in the first slide groove 41, the first slot 61 limits the sliding range of the adjusting member 6. When the lighting lens 3 slides in the second slide groove 62, the second slot 63 limits the sliding range of the lighting lens 3. The optical path is adjusted within a certain range to ensure that the spot of the point laser can still be maintained at the center of the optical axis even if there is a slight defocus or optical path offset, thereby reducing the image distortion caused by the change of the optical path. Different usage environments and conditions may cause slight changes in the optical path. The adjustability within a certain range enables the system to continue to maintain a stable imaging effect.

[0032] Among them, the first slot 61 is arranged along the axis perpendicular to the imaging lens 2, so that the adjustment member 6 moves in the axial direction perpendicular to the imaging lens 2, and the second slot 63 is arranged along the axis parallel to the imaging lens 2, so that the illumination lens 3 moves along the axial direction parallel to the imaging lens 2. Through adjustment in two directions, the adjustment of the illumination lens 3 is more flexible and accurate, which helps to eliminate the horizontal or vertical offset of the image. By adjusting the two directions at the same time, the best calibration position can be found more quickly, and the efficiency and accuracy of the calibration can be improved. During the installation process, there may be a certain deviation between the DMD chip 1 or the imaging lens 2 and the expected position. By adjusting the adjustment member 6 or the illumination lens 3 along the two perpendicular directions, the deviation can be compensated to ensure the accuracy and stability of the projected image.

[0033] Furthermore, in the axial direction parallel to the imaging lens 2, the maximum distance that the lighting lens 3 can move is less than the length of the second slot 63, and in the axial direction perpendicular to the lens, the maximum distance that the adjustment member 6 can move is less than the length of the first slot 61, which can maximize the adjustment of the lighting path.

[0034] like Figure 7 As shown, the mirror body 5 is fixed to the side of the connector 4 opposite to the lighting lens 3 by a locking screw. A plurality of through holes 42 are penetrated on the side. The through holes 42 are distributed around the locking screw with the locking screw as the center. A top screw is provided in the through hole 42. By adjusting the top screws in the three through holes 42, the angle of the mirror body 5 is adjusted, thereby adjusting the reflection path and adjusting the irradiation spot of the point laser.

[0035] The implementation principle of this embodiment is as follows:

[0036] When the point laser is irradiated onto the DMD chip 1 through the illumination lens 3 and the mirror body 5 and the image is projected onto the imaging lens 2, the light spot of the point laser is not at the center of the optical axis of the image. At this time, the mirror body 5 is adjusted to a suitable angle by the top screw set in the through hole 42 so that the light spot is located at the center of the optical axis of the image. When the illumination lens 3 is defocused within a certain range, the position of the light spot is offset. Subsequently, the adjustment member 6 is adjusted along the axis parallel to the imaging lens 2, and the illumination lens 3 is adjusted along the axis perpendicular to the imaging lens 2 so that the adjustment member 6 slides in the first slide groove 41 and the illumination lens 3 slides in the second slide groove 62, thereby completing the adjustment of the light path in two directions, so that when the illumination lens 3 is defocused within a certain range, the light spot is still at the center of the optical axis of the image.

[0037] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly, and they are not intended to limit the scope of protection of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A device for adjusting imaging angle and position, characterized in that: include: A DMD chip (1) for projecting an image; An imaging lens (2) is used to amplify and display the image on the DMD chip (1); an illumination lens (3), for providing a light path; A connecting member (4) is connected to the lighting lens (3), one side of the connecting member (4) is connected to the imaging lens (2), and the DMD chip (1) is fixedly arranged on the other side opposite thereto, and a mirror body (5) is provided inside the connecting member (4) for reflecting light irradiated from the lighting lens (3) onto the DMD chip (1); An adjusting member (6) is arranged between the lighting lens (3) and the connecting member (4) to enable the lighting lens (3) to slide in multiple directions.

2. The imaging angle and position adjustment device according to claim 1, characterized in that: A first slide groove (41) is provided on the side where the connecting member (4) is connected to the adjusting member (6), and the adjusting member (6) is slidably arranged in the first slide groove (41). A plurality of first notches (61) are provided on the adjusting member (6), and a screw passes through the first notch (61) to fix the adjusting member (6) in the first slide groove (41); a second slide groove (62) is provided on the side of the adjusting member (6) away from the connecting member (4), and a second notch (63) is penetrated and provided on the side of the adjusting member (6), and the second notch (63) is communicated with the second slide groove (62), and the lighting lens (3) is arranged in the second slide groove (62), and a screw passes through the second notch (63) to fix the lighting lens (3) in the second slide groove (62).

3. The imaging angle and position adjustment device according to claim 2, characterized in that: A plurality of the first notches (61) are arranged along an axial direction perpendicular to the imaging lens (2), so that the adjusting member (6) moves in a direction perpendicular to the axial direction of the imaging lens (2); and a pair of the second notches (63) are arranged along an axial direction parallel to the imaging lens (2), so that the lighting lens (3) moves along an axial direction parallel to the imaging lens (2).

4. The imaging angle and position adjustment device according to claim 2, characterized in that: In the axial direction of the imaging lens (2), the maximum distance between the side of the lighting lens (3) and the side of the adjacent second slide groove (62) is less than the length of the second notch (63); and in the axial direction perpendicular to the lens, the maximum distance between the side of the adjusting member (6) and the side of the adjacent first slide groove (41) is less than the length of the first notch (61).

5. The imaging angle and position adjustment device according to claim 1, characterized in that: The mirror body (5) is located on the lighting path of the lighting lens (3), and the reflection surface of the mirror body (5) is tilted toward the DMD chip (1).

6. The imaging angle and position adjustment device according to claim 1, characterized in that: The mirror body (5) is fixed to the side of the connecting member (4) opposite to the lighting lens (3) by a locking screw, and a plurality of through holes (42) are penetrated and provided on the side opposite to the lighting lens (3). The plurality of through holes (42) are distributed around the locking screw with the locking screw as the center, and are used to adjust the angle of the mirror body (5).

Images