光学投影仪双振动振镜抖动器

Abstract

本实用新型属于DLP光学振镜技术领域，尤其公开了光学投影仪双振动振镜抖动器，包括底座，所述底座通过铆钉安装在FPCBA上，所述底座顶部安放有线圈支架，所述底座顶面固定有多个定位柱，且线圈支架上设置有多个通槽，多个定位柱与多个通槽一一对应，且定位柱贯穿通槽，线圈支架顶部设置有簧片，且簧片的四个拐角处均设置有角边，多个角边与多个定位柱一一对应。本实用新型通过角边与定位柱的连接定位可有效的保护产品的粘接度和同轴位置，具有极强的抗跌落性能，同时对产品运行平稳性能都有很大的提升，对四边的线圈通电，线圈与磁石的磁力配合形成四边磁力，通过四边磁力将透镜的X / Y角度同时进行偏转，从而提高透镜的分辨率。

Claims

1. Double vibrating galvanometer ditherer for optical projectors, comprising a base (1), characterized in that: The base (1) is mounted on the FPCBA by rivets (2). A coil bracket (3) is placed on the top of the base (1). Multiple positioning posts (4) are fixed on the top surface of the base (1), and multiple through slots (5) are provided on the coil bracket (3). The multiple positioning posts (4) correspond one-to-one with the multiple through slots (5), and the positioning posts (4) penetrate through the through slots (5). A spring (6) is provided on the top of the coil bracket (3), and corner edges (7) are provided at the four corners of the spring (6). (7) Corresponds one-to-one with multiple positioning posts (4), and the bottom surface of the corner edge (7) is attached to the top surface of the positioning post (4). A through hole is provided at the center of the corner edge (7), and the top surface of the positioning post (4) is connected to the corner edge (7) by bolts (8). A central groove is provided at the center of the base (1), and a lens (9) is placed inside the central groove. The top surface of the lens (9) is attached to the bottom surface of the spring (6). The coil bracket (3) is corresponding to the spring (6) by multiple coils (10) and magnets (11).

2. The optical projector dual-vibration galvanometer jitter according to claim 1, characterized in that: The top surface of the coil support (3) has multiple support bars (12) arranged in a ring. Each support bar (12) corresponds to a coil (10). The coil (10) surrounds the surface of the support bar (12) and corresponds to the side of the spring (6).

3. The optical projector dual-vibration galvanometer jitter according to claim 2, characterized in that: A magnet (11) is provided on the top of the coil (10). The top surface of the magnet (11) is attracted to the bottom surface of the reed (6), and the bottom surface of the magnet (11) does not contact the top surface of the coil (10).

4. The optical projector dual-vibration galvanometer jitter according to claim 3, characterized in that: When the coil (10) is energized, it generates a magnetic force, and the magnetic force of the magnet (11) and the coil (10) repel each other, so that the bottom surface of the coil support (3) is in close contact with the top surface of the base (1).

5. The optical projector dual-vibration galvanometer jitter according to claim 1, characterized in that: The base (1) has two opposing supports (13) on its bottom surface. A pressure plate (14) is provided on the inner side of the support (13). The outer side of the pressure plate (14) is in contact with the inner wall of the central groove. An inner rod (15) is provided inside the support (13). The top end of the inner rod (15) penetrates the bottom surface of the support (13). A spring (16) is sleeved on the surface of the inner rod (15). A pressure strip (17) is connected to the top end of the inner rod (15). The top end of the spring (16) is connected to the bottom surface of the pressure strip (17). The bottom end of the spring (16) is connected to the inner bottom surface of the support (13). The elastic force of the spring (16) makes the pressure strip (17) located at the top of the inner side of the support (13).

6. The optical projector dual-vibration galvanometer jitter according to claim 5, characterized in that: The inner side of the bracket (13) is provided with a side groove corresponding to the pressure plate (14). The outer side of the pressure plate (14) is fixed with a protruding rod (18) that passes through the pressure strip (17). The pressure plate (14) and the pressure strip (17) are connected by a spring piece (19), and the spring piece (19) is in a stretched state.

7. The optical projector dual-vibration galvanometer jitter according to claim 6, characterized in that: The elastic force of the spring (16) causes the pressure bar (17) to drive the pressure plate (14) to support the lens (9) via the protruding rod (18), and the elastic force of the spring piece (19) pulls the outer side of the pressure plate (14) to fit against the inner side wall of the central groove.

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