TWI629504B - Light path adjustment mechanism and light path adjustment element - Google Patents

Abstract

An optical path adjusting mechanism comprises a linking member, a coil assembly and a transmission member. The linking member includes an optical element that deflects the light, and the linking member has a concave portion in the circumferential thickness direction. The coil assembly is wound around the concave portion of the linkage and surrounds the optical component, and one end of the transmission member is coupled to the linkage.

Description

Optical path adjusting mechanism and optical path adjusting component

The present invention relates to an optical path adjusting mechanism and an optical path adjusting element.

In recent years, various image display technologies have been widely used in daily life. In an image display device, for example, an optical path adjusting mechanism can be provided to change the traveling light path of the light in the device to provide various effects such as improving imaging resolution and improving picture quality. However, the number, weight, and volume of the components of the conventional optical path adjusting mechanism are large, and it is difficult to further miniaturize. Therefore, there is a need for an optical path adjustment mechanism that is simple in structure, high in reliability, and capable of greatly reducing weight and volume.

Other objects and advantages of the present invention will be further understood from the technical features disclosed in the embodiments of the present invention.

An embodiment of the present invention provides an optical path adjustment mechanism including a linkage, a coil assembly, and a transmission member. The linking member includes an optical element that deflects the light, and the linking member has a concave portion in the circumferential thickness direction. The coil assembly is wound around the concave portion of the linkage and surrounds the optical component, and one end of the transmission member is coupled to the linkage.

Another embodiment of the present invention provides an optical path adjusting component including a lens and a coil. A step portion is provided in a thickness direction of the outer edge of the lens, the step portion includes a side wall, and the coil is wound around a side wall of the step portion of the lens.

According to the design of the embodiment of the present invention, since at least part of the structure of the actuating assembly can be directly disposed on the linking member, the overall volume and weight of the optical path adjusting mechanism can be greatly reduced. And the number of components, it is advantageous to reduce the size or thickness of the optical path adjusting mechanism to match various microelectronic devices. Furthermore, the embodiment of the present invention can accommodate the coil assembly in the accommodating structure of the linking member or the step portion of the periphery of the lens, thereby eliminating the space occupied by the coil group and further reducing the volume of the overall device, and avoiding the coil group and Wear contact of other components for improved reliability.

Other objects and advantages of the present invention will become apparent from the technical features disclosed herein. The above and other objects, features, and advantages of the invention will be apparent from

100, 100a, 100b, 100c‧‧‧ optical path adjustment mechanism

110‧‧‧ linkages

112‧‧‧ lenses

112a, 112b‧‧‧ fixing holes

113‧‧‧Optical components

116‧‧‧Steps

116a‧‧‧ Sidewall

120‧‧‧Activity components

122‧‧‧ coil group

122a‧‧‧ coil

124‧‧‧ Magnet

Section 1241, 1242‧‧‧

125‧‧‧ magnetic body

127‧‧‧ Magnetic materials

130‧‧‧Connecting parts

130a‧‧‧ neck

131‧‧‧ shaft

132, 134‧‧‧ leaf spring

132a, 132b, 134a, 134b‧‧‧ fixing holes

132d, 134d‧‧‧ Connections

133‧‧‧Control parts

135‧‧‧ transmission parts

140‧‧‧ frame

140a, 140b‧‧‧ fixing holes

141‧‧‧Frame

150‧‧‧Piezoelectric components

200, 200a‧‧‧Light path adjustment mechanism

210‧‧‧ linkages

212‧‧‧ lenses

214‧‧‧ lens holder

214a, 214b‧‧‧ fixing holes

215‧‧‧ bearing seat

216‧‧‧ recessed part

220‧‧‧Activity components

222‧‧‧ coil group

224‧‧‧ magnet

230‧‧‧Connecting parts

232‧‧‧ leaf spring

232a, 232b, 232c, 232d‧‧‧ fixing holes

232e‧‧‧ Ring Department

232f, 232g‧‧‧ extension

240‧‧‧ frame

240a, 240b‧‧‧ fixing holes

242‧‧‧Front frame

300‧‧‧Optical device

310‧‧‧Lighting system

312‧‧‧Light source

312R, 312G, 312B‧‧‧Lighting diode

314‧‧‧ Beam

314a‧‧‧Subimage

316‧‧‧Lighting device

317‧‧‧ lens array

318‧‧‧ lens group

319‧‧‧Internal total reflection稜鏡

320‧‧‧Digital micromirror device

330‧‧‧Projection lens

340‧‧‧Light path adjustment mechanism

350‧‧‧ screen

400, 400a, 400b, 400c‧‧‧ optical path adjustment mechanism

410‧‧‧ linkages

412‧‧‧ lenses

420‧‧‧Actuating components

422‧‧‧ coil

424‧‧‧ magnet

430‧‧‧Connecting parts

440‧‧‧ frame

440a, 440b‧‧‧ extensions

440c‧‧‧Lug structure

440d‧‧‧Lighting Department

442‧‧ ‧ gap

444‧‧‧ accommodating space

446‧‧‧ openings

448‧‧ ‧ shading film

450‧‧‧Light valve module

452‧‧‧ lenses

460‧‧‧Internal total reflection稜鏡

A‧‧‧ axis

A1-A3, B1-B3‧‧‧ boards

C, D‧‧‧ connection

E‧‧‧ length

F‧‧‧Width

M‧‧‧ initial position

N‧‧‧ normal direction

P, Q‧‧‧ direction of rotation

T1, T2‧‧‧ touch points

Θ‧‧‧ angle

W‧‧ Aspect aspect ratio

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an exploded perspective view showing an optical path adjusting mechanism according to an embodiment of the present invention.

2 is a schematic view of the optical path adjusting mechanism of FIG. 1 after assembly.

3 is a schematic view showing an actuated state of a linking member according to an embodiment of the present invention.

Fig. 4 is an exploded perspective view showing an optical path adjusting mechanism according to another embodiment of the present invention.

FIG. 5 is a schematic view of the optical path adjusting mechanism of FIG. 4 after assembly.

6A and 6B are respectively schematic views of a connecting member according to an embodiment of the present invention.

Fig. 7A is a schematic view showing an optical path adjusting mechanism according to an embodiment of the present invention, and Fig. 7B is an enlarged cross-sectional view taken along line A-A' of Fig. 7A.

Fig. 8A is a schematic view showing an optical path adjusting mechanism according to another embodiment of the present invention, and Fig. 8B is an enlarged cross-sectional view taken along line B-B' of Fig. 8A.

Fig. 9 is a schematic view showing the configuration of a coil accommodating structure according to an embodiment of the present invention.

Figure 10 is a schematic illustration of an actuation assembly in accordance with another embodiment of the present invention.

FIG. 11 is a schematic diagram of an optical path adjusting mechanism applied to an optical system according to an embodiment of the present invention.

FIG. 12A is a schematic diagram of an optical path adjusting mechanism according to another embodiment of the present invention.

FIG. 12B is a schematic diagram of an optical path adjusting mechanism according to another embodiment of the present invention.

Figure 13 is a schematic view of an optical path adjusting mechanism according to another embodiment of the present invention.

Figure 14 is a schematic view of an optical path adjusting mechanism according to another embodiment of the present invention.

FIG. 15A is an exploded perspective view showing an optical path adjusting mechanism according to another embodiment of the present invention, and FIG. 15B and FIG. 15C are respectively a side view and a plan view of the optical path adjusting mechanism of FIG. 15A combined with other optical elements.

16A is a schematic view of an optical path adjusting mechanism in combination with other optical components according to another embodiment of the present invention.

16B is a schematic diagram of an optical path adjusting mechanism in combination with other optical components according to another embodiment of the present invention.

17A is an exploded perspective view of an optical path adjusting mechanism in combination with other optical components according to another embodiment of the present invention, and FIGS. 17B and 17C are respectively side and top plan views of the optical path adjusting mechanism of FIG. 17A assembled with other optical components.

Figure 18 is a schematic view of an optical path adjusting mechanism according to another embodiment of the present invention.

The above and other technical contents, features and advantages of the present invention will be apparent from the following detailed description of the embodiments of the invention. The directional terms mentioned in the following embodiments, such as up, down, left, right, front or back, etc., are only directions referring to the additional drawings. Therefore, the directional terminology used is for the purpose of illustration and not limitation.

The disclosure in the following embodiments discloses an optical path adjustment mechanism that can be applied to different optical systems (eg, display devices, projection devices, etc.) to adjust or change the optical path to provide, for example, improved imaging resolution, improved image quality (eliminating darkness). The effect of the area and the softening of the image edge is not limited, and the arrangement position and arrangement of the optical path adjusting mechanism in the optical system are not limited at all. The optical path adjusting mechanism may include, for example, a linking member, an actuating member, a connecting member, and a partial member or all members of a member. In various embodiments as described below, the linking member can include an optical element that deflects the light and is linked The component may further comprise a carrier carrying the optical component, and the actuating form of the linkage may be, for example, rotation, vibration, movement, etc.; the actuation component only needs to produce the effect of driving the linkage, and the component is not For example, it may be an electromagnetic induction component including a magnet and a coil group (or a coil); the connector may have a property of being deformed in a direction to restore the original size and shape when the external force is removed after the deformation, for example, at least slightly elastic or Flexible, and the connector can be a variety of power transmission mechanisms, or control mechanisms to cushion vibration or control motion, such as springs, leaf springs, wire springs, flexible sheet metal parts or The flexible leaf-like mechanism and the like; the frame only needs to be able to define an accommodating space, which can be a frame or a frame having different forms or shapes without limitation.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an exploded perspective view showing an optical path adjusting mechanism according to an embodiment of the present invention. As shown in FIG. 1 , the optical path adjusting mechanism 100 includes a linking member 110 , an actuating component 120 , a connecting component 130 , and a frame 140 . In this embodiment, the linking member 110 includes an optical element that can deflect light, such as a lens 112, and the lens 112 only needs to provide an effect of deflecting light. The form and type thereof are not limited, for example, A lens (Lens) or a mirror (Mirror). In another embodiment, a carrier can also be included, and then an optical component is disposed on the carrier or the carrier and the optical component are integrally formed. In this embodiment, the actuation component 120 can be, for example, an electromagnetic induction component including the coil assembly 122 and the magnet 124. In another embodiment, for example, another coil assembly can be used as a magnetic or magnetic material instead of the magnet. Another coil group (not shown) of the frame 140 can also generate an electromagnetic force with the coil group wound around the linkage 110 to drive the linkage 110. In this embodiment, the connecting member 130 can be, for example, two restoring leaf springs 132, 134. The two ends of the leaf spring 132 may have fixing holes 132a and 132b. The two ends of the leaf spring 134 may have fixing holes 134a and 134b. The two ends of the lens 112 may be provided with fixing holes 112a and 112b, and both ends of the frame 140 may be disposed. Fixing holes 140a, 140b. In an assembly embodiment, the linking member 110 is disposed in the frame 140, the magnet 124 is fixed to the frame 140, and the coil assembly 122 is disposed around the lens 112. For example, it can be wound around the circumference of the lens 112. One end of the leaf spring 132 can be fixed to the lens 112 via a fixing member 132a, 112a corresponding to the position, for example, by a fixing member such as a screw (not shown), and the other end of the leaf spring 132 The frame 140 can be fixed to the frame 140 via the fixing holes 132b and 140a corresponding to the positions, and the leaf spring 132 is disposed between the lens 112 and the frame 140. Furthermore, one end of the leaf spring 134 can be fixed to the lens 112 via a fixing hole 134a, 112b corresponding to the position by a fixing member such as a screw (not shown), and the other end of the leaf spring 134 can be via the corresponding fixing hole 134b, The 140b is fixed to the frame 140 such that the leaf spring 134 is disposed between the lens 112 and the frame 140. The assembled optical path adjusting mechanism 100 is as shown in FIG. Therefore, the leaf springs 132, 134 disposed at the two ends of the lens 112 can be connected to the lens 112, and the connection direction of the leaf springs 132, 134 can substantially coincide with the rotation axis A of the linkage 110, and the lens 112 can be rotated to the axis A as the axis For reciprocating action, for example, the axis A can be rotated clockwise or counterclockwise or oscillated. As shown in FIG. 3, in an embodiment, the electromagnetic force between the coil group 122 and the magnet 124 allows the lens 112 to be rotated by an angle θ from the initial position M in the rotational direction P about the rotation axis A, and the leaf spring 132, The restoring force of 134 can rotate the lens 112 back to the initial position M in the opposite rotational direction Q; in another embodiment, another electromagnetic force can be applied between the coil assembly 122 and the magnet 124 to assist the restoring force of the leaf springs 132, 134. The lens 112 is rotated back to the initial position M in the opposite rotational direction Q, so that the lens 112 can be reciprocally oscillated to different positions to deflect the incident light to different directions, thereby obtaining the effect of adjusting or changing the traveling path of the light. In an embodiment, the rotational angle θ of the linkage 110 may range from 0.1 to 1 degree, preferably from 0.2 to 0.5 degrees, and may be, for example, 0.32 degrees. By adjusting or changing the optical path by the optical path adjusting mechanism of the embodiment of the present invention, different effects can be generated according to actual needs, for example, it can be used to improve projection resolution, improve image quality (eliminate dark areas, soften image edges), and the like without limitation.

With the design of the above embodiment, since at least part of the structure of the actuating assembly (for example, a coil set or a coil) is directly disposed on the optical element that can deflect the light, the optical path can be reduced. By adjusting the overall volume, weight or number of components of the mechanism, the overall structure and reliability can be simplified, and miniaturization or thinning can be facilitated to match various microelectronic devices.

4 is an exploded perspective view of an optical path adjusting mechanism according to another embodiment of the present invention, and FIG. 5 is a schematic view of the optical path adjusting mechanism of FIG. 4 after being assembled. As shown in FIG. 4 and FIG. 5, in the embodiment, the linking member 210 of the optical path adjusting mechanism 200 can include, for example, a lens 212 and a lens holder 214 for receiving the lens 212. The actuation component 220 can be, for example, a coil assembly. The electromagnetic induction component of the 222 and the magnet 224, the coil assembly 222 can be wound around the lens holder 214 and can be wound around the periphery of the lens holder 214, for example, and the magnet 224 can be fixed to the frame 240. The connector 230 can be, for example, an integrally formed leaf spring 232 that spans from one end of the lens holder 214 to the other end. The shape of the leaf spring 232 is not limited. In this embodiment, the leaf spring 232 has a ring portion 232e and two extending portions 232f and 232g extending from the ring portion 232e toward the both ends of the linking member 210, and two extending portions 232f, The direction of extension of 232g can substantially coincide with the axis of rotation A. The two ends of the leaf spring 232 may have fixing holes 232a, 232b, 232c, and 232d. The two ends of the lens holder 214 may be respectively provided with a fixing hole 214a (corresponding to the fixing 232b) and a fixing hole 214b (corresponding to the fixing hole 232c), and the frame 240 The fixing holes 240a (corresponding to the fixing holes 232a) and the fixing holes 240b (corresponding to the fixing holes 232d) can be respectively disposed at both ends. The integrally formed leaf spring 232 can be disposed between the lens holder 214 and the frame 240 by fixing the fixing member such as a screw (not shown) via the corresponding fixing holes. The extending direction of the leaf spring 232 substantially coincides with the rotation axis A of the linking member 210, and the linking member 210 (the lens 212 together with the lens holder 214) can rotate clockwise or counterclockwise about the axis A, and the restoring force of the leaf spring 232 can be linked. The member 210 is rotated back to the initial position in the opposite rotational direction. In another embodiment, another electromagnetic force can be applied between the coil assembly 222 and the magnet 224 to assist the restoring force of the leaf spring 232 to rotate the link member 210 back in the opposite rotational direction. The initial position, so the linkage 210 can be reciprocally oscillated to different positions, so that the lens 212 deflects the incident light to different directions, and obtains the effect of adjusting or changing the traveling path of the light.

According to the design of the above embodiment, since at least part of the structure (for example, the coil group or the coil) of the actuating assembly is directly disposed on the lens holder of the linking member, the overall volume, weight or component number of the optical path adjusting mechanism can be reduced, thereby facilitating The optical path adjustment mechanism is miniaturized or thinned to match various microelectronic devices.

The shape of the connecting member in the embodiment of the present invention is not limited. In an embodiment, the connecting member may have at least one bent portion, that is, one end of the connecting member connecting the linking member and the other end of the connecting frame, and both ends thereof The room can include at least one turning point. For example, as shown in FIG. 6A and FIG. 6B, each leaf spring 132 (or leaf spring extension 232f), leaf spring 134 (or leaf spring extension 232g) may have at least two faces with an angle to form a The non-planar leaf spring, for example, as shown in FIG. 6A, the plate surface A2 of the leaf spring 132 (or the leaf spring extension 232f) may be substantially perpendicular (about 90 degrees angle) to the panel surface A1 and the panel surface A3, and the panel surface A1 and the panel The face A3 may be substantially parallel, and as shown in FIG. 6B, the face B2 of the leaf spring 134 (or the leaf spring extension 232g) may be substantially perpendicular to the face B1 and the face B3, and the face B1 and the face B3 may be substantially perpendicular . In an embodiment, as shown in FIG. 6A, a contact portion of the leaf spring 132 and the lens 112 can form a first contact point T1, and a contact portion of the leaf spring 132 and the frame 140 can form a second contact point. T2, and the first contact point T1 and the second contact point T2 may have substantially different levels. Furthermore, referring again to FIG. 1, the leaf spring 132 is coupled to the connecting portion 132d of the frame 140, which may be substantially perpendicular to the connecting portion 134d of the frame 140, but is not limited thereto. In another embodiment, the connecting portion 132d can be substantially parallel to the connecting portion 134d but is not limited. Therefore, in an embodiment, by the non-planar connector design generated by the different orientation of the bent portions at both ends of the connecting member 130, the center of the twist when the connecting member moves can substantially coincide with the center of mass of the lens 112, but not This is limited.

In one embodiment, the thickness of the connecting member 130 can be less than 0.5 mm, for example, the thickness can be 0.1 mm, 0.15 mm, or 0.2 mm, and the material of the connecting member 130 can be, for example, an elastic material (such as a spring, a leaf spring, or a wire spring). , metal materials (such as stainless steel, iron, copper, aluminum) Or plastic material. Furthermore, since the neck portion 130a of the connecting member 130 is too thin to be easily broken and too thick, the movement may be unsmooth, so that the neck width 130a of the connecting member 130 may have an aspect ratio W of 0.5-1, and a preferred range is 0.6. A preferred range is -0.9, and may be, for example, 0.75. As shown in FIGS. 6A and 6B, the aspect ratio W of the neck portion 130a can be defined as the length E divided by the width F (W=E/F).

Fig. 7A is a schematic view showing an optical path adjusting mechanism according to an embodiment of the present invention, and Fig. 7B is an enlarged cross-sectional view taken along line A-A' of Fig. 7A. As shown in FIG. 7A, the optical path adjusting mechanism has a frame 141 having a plurality of layers of coils 122a substantially stacked in the normal direction N of the lens 112 to, for example, reduce the area occupied by the wiring plane of the coil group 122. And the coil assembly 122 can be circled out of a range, and the transmission member 135 such as the leaf springs 132, 134 can be located outside the range around which the coil assembly 122 is wound, thereby, for example, reducing the linkage 210 during actuation and other The possibility of component interference. As shown in FIG. 7B, the periphery of the lens 112 can form a receiving structure for accommodating the coil assembly 122. In this embodiment, the peripheral edge of the lens 112 can be provided with a corresponding convex portion and a concave portion to make the outer edge of the lens 112. The thickness direction indicates an L-shaped step portion 116, and the coil group 122 may be wound around one side wall 116a of the step portion 116 in one or more rounds in the thickness direction.

Fig. 8A is a schematic view of an optical path adjusting mechanism according to another embodiment of the present invention, and Fig. 8B is an enlarged cross-sectional view taken along line B-B' of Fig. 8A. As shown in FIG. 8B, when the linking member 210 is not actuated, the lens 212 and the magnetic material 127 are substantially at the same horizontal plane to save space occupied by the member. The peripheral edge of the lens holder 214 can form a receiving structure to accommodate the coil assembly 222. In this embodiment, a concave portion 216 is disposed in the thickness direction of the periphery of the lens holder 214, and the periphery of the lens holder 214 has a C-shaped or U-shaped end surface structure, and the coil group 222 can be accommodated in the concave portion. Part 216. That is, the accommodating structure of the accommodating coil group may be a step portion or a groove, which may be formed at different positions of the linking member and may have different shapes such as C-shaped or U-shaped, but is not limited, only need Can provide the effect of accommodating coil sets Just fine. When the coil assembly is housed in the accommodating structure of the linking member, the space occupied by the coil group can be omitted, the volume of the whole device can be further reduced, and the wear contact between the coil group and other components can be avoided, and the reliability can be improved. Furthermore, the arrangement of the coil accommodating structure on the periphery of the linking member is not limited at all. For example, the coil accommodating structure may be continuously formed on the periphery of the linking member as shown in FIG. 7A or include the periphery of the linking member 210 as shown in FIG. A plurality of recessed portions 216 that are separated from one another.

The connecting member of each embodiment of the present invention is merely an example, and the connecting member disposed between the optical component and the frame body may be various transmission power transmitting members or a control mechanism for buffering vibration or controlling motion, and is not limited. For example, springs, leaf springs, wire springs, flexible sheet-like parts or flexible leaf-shaped parts, and the like. Furthermore, optical elements such as lenses may be provided on other carriers and are not limited to lens holders, and the frames may be frames or frames of different forms or shapes without limitation.

In an embodiment, the wire diameter of the coil group may be less than 0.2 mm, for example, 0.05 mm, and the manner in which the coil group is fixed on the linking member is not limited, for example, gluing may be used (for example, UV dispensing or outer enamel coating) ), heat fusion, socket, etc. Moreover, in an embodiment, the power of the driving coil group may be less than 200 mW, and the heat resistance allowable temperature of the coil group may be less than 120 degrees.

In one embodiment, the material of the lens may be glass, plastic or metal film coated glass, plastic (such as silver plated or aluminized), and the connector may utilize self-tapping, nut, heat sealing, or dispensing. The method is set on the lens or the lens holder. If the aperture is too small, the lens is easily cracked. If the aperture is too large, the screw is not easily locked or slipped. Therefore, in an embodiment, the fixing hole on the lens can be M1.2 self-tapping screw. Hole (aperture 0.85-1.1mm), M1.6 self-tapping screw hole (aperture 1.2-1.4mm), M1.7 self-tapping screw hole (aperture 1.3mm-1.5mm) or M2 self-tapping screw hole (aperture 1.5mm- 1.8mm).

The material of the frame can be, for example, metal (aluminum alloy, magnesium alloy, etc.) or plastic instead of limited. The material of the magnet may be a hard magnet or a soft magnet, and may be, for example, a neodymium iron boron magnet (NdFeB). If the magnet is too large, it will increase the occupied space. If the magnet is too small, the magnetic force is insufficient. Therefore, the size of the magnet is preferably 14 mm × 7 mm × 5 mm - 0.5 mm × 0.5 mm × 0.5 mm, for example, 9 mm × 1.9 mm × 0.8. Mm, in one embodiment, may be, for example, 9 mm x 1.9 mm x 0.3 mm. The heat resistant temperature of the magnet may be less than 120 degrees.

In an embodiment, the natural frequency of the linkage can be adjusted by changing the weight of the screw, adding the mass, setting the pressure plate, etc., so that the natural frequency of the linkage can be greater than 90 Hz to avoid resonance, and the higher natural frequency can be improved. The reaction speed of the linkage and the use of a smaller actuator allows the linkage to reach a predetermined angle of rotation. Furthermore, the movement type can be controlled by the connection member locking the pound force. In one embodiment, the locking force of the connecting member can be 0.5-3 kg-mm, and a preferred range can be 0.8-2.5 kg- A better range of mm, 1-2 kg-mm.

In an embodiment, at least part of the structure of the optical path adjusting mechanism may be a unitary structure to obtain, for example, a reduction in the number of parts, a simplified overall structure, and an effect of shortening assembly man-hours. For example, the connector, the lens and the frame can be integrally formed by the same material (for example, plastic or metal), or two of the components can be integrally formed first, for example, the connector, the lens is integrally formed or the connector, the frame first After integrally forming, it can be combined with other components. In this case, the fixing manner of the combination can be dispensing or fixing with screws. In another embodiment, the connecting member, the lens, the lens holder and the frame body can be integrally formed by using the same material (for example, plastic or metal), or at least two of the components can be integrally formed before being combined with other components. . In another embodiment, as shown in FIG. 3, a rotating shaft 131 formed by, for example, a connecting member can be connected to the optical element 113, a coil can be wound around the periphery of the optical element 113, and the optical element 113 and the rotating shaft 131 can be integrally formed. A mechanism for adjusting the optical path. In another embodiment, as shown in FIG. 9, a mechanism for adjusting an optical path may include an outer frame 242, a magnetic body 125, a carrier 215, a lens 212 disposed on the carrier 215, and a winding device. On the carrier 215 a peripheral coil 122a, and a control mechanism 133 disposed between the carrier 215 and the outer frame 242, and the control mechanism 133 and the carrier 215 can be integrally formed, or the control member 133, the outer frame 242 and the optical component 113 can be formed in one piece. In another embodiment, a mechanism for adjusting an optical path includes a frame, a lens holder, a coil assembly, and a transmission member. The lens holder is disposed in the frame and includes a lens, and the coil assembly is disposed around the lens holder. The transmission member is connected between the lens holder and the frame, and at least two of the three components of the frame, the lens holder and the transmission member are integrally formed. Further, a shock absorber such as rubber may be filled between the frame and other internal members to provide a shock absorbing effect.

In an embodiment, the optical path adjustment mechanism may have a weight of less than 5 g, for example, 1.6 g, and a volume of less than 40 mm x 40 mm x 10 mm, for example, 21 mm x 21 mm x 3.6 mm. The actuation frequency of the actuation assembly can be 24 Hz - 120 Hz, and the electromagnetic induction component can be, for example, a voice coil motor. The type of the actuating assembly is not limited, and it is only necessary to obtain the effect of driving the link to reciprocate. In another embodiment, as shown in FIG. 10, the actuation assembly can include, for example, a piezoelectric element 150 disposed on the lens 112. The piezoelectric element 150 can be compressed or stretched by applying an electric field to the piezoelectric element 150. Deformation means that the electric energy can be converted into mechanical energy to make the lens 112 reciprocate to achieve the effect of adjusting the optical path.

FIG. 11 is a schematic diagram of an optical path adjusting mechanism applied to an optical system according to an embodiment of the present invention. Referring to FIG. 11 , the optical device 300 includes an illumination system 310 , a digital micromirror device 320 , a projection lens 330 , and an optical path adjustment mechanism 340 . Therein, the illumination system 310 has a light source 312 adapted to provide a light beam 314, and the digital micromirror device 320 configures a transmission path of the light beam 314. The digital micromirror device 320 is adapted to convert the light beam 314 into a plurality of sub-images 314a. In addition, the projection lens 330 is disposed on the transmission path of the sub-images 314a, and the digital micro-mirror device 320 is located between the illumination system 310 and the projection lens 330. In addition, the optical path adjustment mechanism 340 can be disposed between the digital micromirror device 320 and the projection lens 330, for example, in the digital micromirror device 320 and internal total reflection. Between 319 may be between the internal total reflection 稜鏡 319 and the projection lens 330, and located on the transmission path of the sub-images 314a. In the optical device 300, the light source 312 may include, for example, a red light emitting diode 312R, a green light emitting diode 312G, and a blue light emitting diode 312B. The color light emitted by each light emitting diode is transmitted through a light combining device 316. After the light is combined, a light beam 314 is formed, and the light beam 314 passes through the lens array 317, the lens group 318, and the internal total reflection enthalpy (TIR Prism) 319. Thereafter, internal total reflection 稜鏡 319 reflects beam 314 to digital micromirror device 320. At this time, the digital micro-mirror device 320 converts the light beam 314 into a plurality of sub-images 314a, and the sub-images 314a sequentially pass through the internal total reflection 稜鏡319 and the optical path adjustment mechanism 340, and the sub-images 314a are transmitted via the projection lens 330. Projected on the screen 350. In the present embodiment, when the sub-images 314a pass through the optical path adjusting mechanism 340, the optical path adjusting mechanism 340 changes the transmission paths of some of the sub-images 314a. That is, the sub-images 314a passing through the optical path adjusting mechanism 340 are projected on the first position (not shown) on the screen 350, and the sub-images 314a passing through the optical path adjusting mechanism 340 in another part of the time. Projected on a second position (not shown) on the screen 350, wherein the first position and the second position differ by a fixed distance in the horizontal direction (X-axis) or/and the vertical direction (Z-axis). In the present embodiment, since the optical path adjusting mechanism 340 can move the imaging position of the sub-images 314a in the horizontal direction or/and the vertical direction by a fixed distance, the horizontal resolution or/and the vertical resolution of the image can be improved. Of course, the above embodiments are merely illustrative. The optical path adjustment mechanism of the embodiment of the present invention can be applied to different optical systems to obtain different effects, and the arrangement position and arrangement manner of the optical path adjustment mechanism in the optical system are not limited at all.

In various embodiments of the present invention, the configuration of the magnetic body is not limited. For example, as shown in FIG. 2, the coil group 122 (or coil) may surround the optical element or be disposed outside the optical element, and two magnetic or magnetic materials such as the magnet 124 may be respectively located on both sides of the rotation axis A. And can be configured such that a line C at each end of each magnet 124 is substantially not Parallel rotation axis A, or as shown in FIG. 5, may be arranged such that a line C at each end of each magnet 224 is substantially parallel to the axis A. As shown in FIG. 12A, in another embodiment, the magnet 124 of the optical path adjusting mechanism 100a may include a first segment 1241 and a second segment 1242 at an angle, a first segment 1241 and a second region. The segments are connected to each other, and a line C at both ends of the magnet 124 may be substantially non-parallel to the axis A, that is, the extension line of the line C and the extension line of the axis A may intersect at one point. As shown in FIG. 12B, in another embodiment, the magnet 124 of the optical path adjusting mechanism 100b can include a first segment 1241 and a second segment 1242 at an angle, a first segment 1241 and a second region. The segments 1242 are separated from each other, and the leaf springs 132 and 134 are respectively provided with the linking member 110 and the frame 140, and the connecting line D of the two leaf springs 132 and 134 can be substantially non-parallel to the connecting line C at both ends of the magnet 124, that is, the connecting line C. The extension line with connection A will intersect at one point. It should be noted that although not shown, the non-parallel configuration of the magnet 124 of FIGS. 12A and 12B can also be combined with other embodiments of the present invention. For example, if the connector is used as the cross member 210 as shown in FIG. a leaf spring 232 having a ring portion 232e and two extending portions 232f and 232g extending from the ring portion 232e toward the both ends of the linking member 210, wherein the extending directions of the extending portions 232f and 232g are substantially non-parallel A line C at each end of each magnet 224. The configuration of the magnetic body can be made more flexible by the non-parallel configuration of the magnets of Figs. 12A and 12B. For example, as shown in FIG. 16A, when the magnet 424 is disposed on the side not parallel to the rotation axis A, the light member such as the light valve module 450 can be moved away from and away from the optical valve module 450, so that the magnet 424 is extended to provide a higher height. Magnetic force.

FIG. 13 is a schematic diagram of an optical path adjusting mechanism according to another embodiment of the present invention. As shown in FIG. 13, in the embodiment, the linking member 110 of the optical path adjusting mechanism 100c is disposed in the frame 140 and includes a deflectable light. The lens 112, the magnet 124 is disposed on the lens 112, for example, disposed on the periphery of the lens 112. The coil assembly 122 is disposed on the frame 140, for example, around the periphery of the frame 140, and the coil assembly 122 surrounds the lens 112. The magnet 124 is located within a range around which the coil assembly is wound. When the linkage 110 is actuated, the magnet 124 is combined with the mirror. The piece 112 is swung and the coil set 122 remains fixed. Figure 14 is a schematic view of an optical path adjusting mechanism according to another embodiment of the present invention. As shown in FIG. 14 , in the embodiment, the linking member 210 of the optical path adjusting mechanism 200 a can be disposed in the frame 240 and can include, for example, a lens 212 and a lens holder 214 for receiving the lens 212. The magnet 224 can be disposed on the lens 214. The lens holder 214 is disposed, for example, on the periphery of the lens holder 214, and the coil assembly 222 can be wound around the frame 240. For example, the coil assembly 222 can be wound around a circumference of the frame 240. 224 is located within the range of the coil assembly circle. In one embodiment, the linking member 210 can be received in the frame 240. The linking member 210 includes an optical element 212 that deflects light, and a magnetic material or magnetic body (such as the magnet 224) disposed around the optical element 212. And a control mechanism or transmission member (such as the connector 230), the control member or the transmission member is disposed between the optical member 212 and the frame 240, and the coil or coil assembly (for example, the coil assembly 222) is wound around The frame 240 is on and around the optical element 212. That is, in various embodiments of the present invention, the relative arrangement positions of the magnetic body/magnetic material and the coil/coil group may be changed according to actual needs, and are not limited. Further, if the magnetic body/magnetic material is provided on the movable member to increase the rotational torque, the movement can be made smoother by adjusting the shape, weight, magnetic force, and the like of the magnetic body/magnetic material. FIG. 15A is an exploded perspective view showing an optical path adjusting mechanism according to another embodiment of the present invention, and FIG. 15B and FIG. 15C are respectively a side view and a plan view of the optical path adjusting mechanism of FIG. 15A after assembly. As shown in FIG. 15A, the optical path adjusting mechanism 400 includes a linking member 410, an actuating component 420 (for example, a coil 422 and a magnet 424), a connecting member 430, and a frame 440. In an embodiment, the material of the frame 440 may be metal or plastic. The optical path adjustment mechanism 400 can be disposed, for example, adjacent to the position of the light valve module 450 and the internal total reflection 稜鏡 460. In one embodiment, the total reflection 稜鏡 may be replaced by a reflective lens, a mirror or a field lens, such that the reflective lens elements mentioned below are identical to the total reflection 稜鏡 denoted by the same reference numeral 460. In one embodiment, the light valve module 450 can include, for example, a light valve, a circuit board, a mechanical component, a protective cover, and a heat sink, but is not limited thereto, and The light valve module 450 can comprise, for example, a digital micromirror device. In one embodiment, the protective cover of the light valve module includes a light transmissive lens 452 having a surface that is less than 2 mm in line with the reflective lens 460. In another embodiment, the surface of the permeable lens 452 is at a linear distance from the reflective lens 460 of less than 1 mm. In another embodiment, the surface of the permeable lens 452 is at a linear distance from the reflective lens 460 of less than 0.6 mm. In this embodiment, a frame 440 is adjacent to one end of the light valve module 450 to form a notch 442, and a portion of the light valve module 450 can extend into the notch 442. If the frame 440 does not form the notch 442, one end of the frame 440 interferes with the light valve module 450, so that the optical path adjusting mechanism 400 cannot be closer to the internal total reflection 稜鏡460, resulting in a longer back focus of the lens. Therefore, please refer to FIG. 15A and FIG. 15B simultaneously. With the design of the embodiment, a notch 442 is formed at one end of the frame 440 facing the light valve module 450, and a part of the light valve module 450 can extend into the notch 442, that is, The optical path adjustment mechanism 400 can avoid the light valve module 450 to bring the assembled position closer to the internal total reflection 稜鏡 (or reflective lens) 460, which can further reduce the overall volume and shorten the back focus of the lens. On the other hand, please refer to FIG. 15A and FIG. 15C. In this embodiment, the frame 440 can be adjacent to the light valve module 450 (including a light valve such as the digital micro-mirror device 320). For example, the optical component of the lens 412 can be set. In the frame 440, the coil 422 can surround the lens 412. For example, the coil 422 can be the same as the coil 122a shown in FIG. 7B. The axis can be substantially parallel to the normal direction N of the optical element such as the lens 412, and the coil 422 can be wound in multiple turns. It is located outside the optical component. For example, the magnetic material of the magnet 424 can be disposed adjacent to the coil 422, and one end of the frame 440 can form or connect a light shielding structure such as the light shielding portion 440d, and the light valve in the light valve module 450 can convert an illumination light into a light. For example, the image light of the light valve of the light valve module 450 in the ON state can enter the optical component corresponding to an effective optical path of the optical component of the lens 412, and the optical valve module 450 The image light when the light valve is in the OFF state may be guided away from the optical element and may be irradiated to other members such as the coil 422 and the magnet 424, causing the coil 422 or the magnet 424 to heat up to cause a problem of disabling. because Therefore, the light shielding structure of the embodiment of the present invention can be disposed outside the effective optical path of the optical component to avoid blocking the image light that should enter the optical component. Further, the light shielding structure can be disposed on the optical path of the image light through the coil or the magnetic material to provide light shielding. The effect is that the image light of the light valve or the stray light in the system is reduced or prevented from being irradiated to the coil 422 or a member such as a magnetic material (for example, the magnet 424), and the possibility of dissipating the temperature of the coil 422 or the magnet 424 is reduced, and the light shielding structure is Reduces unwanted light into the lens and improves contrast. In an embodiment, for example, the light shielding structure of the light shielding portion 440d may be provided independently or integrally formed with the frame body 440. In one embodiment, the linkage 410 includes a lens 412 having a surface that is less than 3 mm in line with the reflective lens 460. In another embodiment, the linear distance between the surface of the lens 412 and the reflective lens 460 is less than 2 mm. In another embodiment, the linear distance between the surface of the lens 412 and the reflective lens 460 is less than 1.5 mm.

16A is a schematic view of an optical path adjusting mechanism according to another embodiment of the present invention. As shown in FIG. 16A, the frame 440 of the optical path adjusting mechanism 400a has an upper extending portion 440a and a lower extending portion 440b adjacent to the optical valve module 450, and the upper extending portion 440a and the lower extending portion 440b define an accommodation. The space 444, the light valve module 450 can be placed between the upper extension portion 440a and the lower extension portion 440b, so that the upper and lower sides of the light valve module 450 are overlapped with the extension portions 440a, 440b, for example. The term "superimposed relationship" may be defined as a projection of the light valve module 450 in a horizontal or vertical direction in space into at least a portion of the extensions 440a, 440b, or the extensions 440a, 440b being horizontal or vertical in the space. The projection of the direction can be projected onto at least a portion of the light valve module 450. In this embodiment, the optical component of the linkage 410 can be disposed in the frame 440, the coil 422 can be disposed between the frame 440 and the optical component of the linkage 410, and the frame 440 can carry the internal total reflection 稜鏡 460 ( The internal total reflection 稜鏡 460 is covered by the frame 440 to bring the position of the optical path adjustment mechanism 400 closer to the internal total reflection 稜鏡 460. 16B is a schematic diagram of an optical path adjusting mechanism according to another embodiment of the present invention. As shown in FIG. 16B, the optical path adjusting mechanism 400b The extending portion of the frame 440 formed at one end of the light valve module 450 may include a lug structure 440c, and the light valve module 450 may be inserted into the opening 446 surrounded by the lug structure 440c, that is, the lug structure. The 440c may be in a superposed relationship with at least two sides of the light valve module 450 such that the assembled position of the optical path adjustment mechanism 400 is closer to the internal total reflection 稜鏡 460. Based on the foregoing embodiments, the frame 440 only needs to form a notch or an extension portion corresponding to the light valve module 450 at one end adjacent to the light valve module 450, and the notch or extension portion can define at least a portion of the light valve module 450. The space can be obtained to bring the position of the optical path adjusting mechanism 400 closer to the internal total reflection 稜鏡 460.

17A is an exploded perspective view showing an optical path adjusting mechanism of another embodiment of the present invention, and FIG. 17B is a side view and a plan view of the optical path adjusting mechanism of FIG. 17A after assembly. As shown in FIG. 17A and FIG. 17B, the light shielding structure of the optical path adjusting mechanism 400c can be a separate light shielding sheet 448, and the light shielding sheet 448 can be disposed on the frame body 440 and other light members (for example, the light valve module 450 and the internal total reflection edge). Between the mirrors 460), the reflected light of the light valve module 450 in the OFF state or other components of the stray light illumination system of the system are prevented from causing temperature rise or contrast degradation. FIG. 17C is a schematic diagram showing the light shielding sheet 448 and the light valve module 450 and the internal total reflection 稜鏡 460 according to an embodiment of the invention. As shown in FIG. 17C, since the independent light shielding sheet 448 is not disposed on the frame 440 or the condition of connecting the frame 440, it has a large design flexibility in the configuration type. In one embodiment, the light shielding sheet 448 The distribution area and the area size can be optimally configured by the OFF state reflected light of the light valve module 450 and the main infested position of the system stray light to further enhance the light shielding effect. In the various embodiments of the present invention, the form of the light shielding structure is not limited, and may be, for example, a light shielding portion, a light shielding sheet, a light shielding member, and the like. Moreover, in an embodiment, at least a portion of the light shielding structure of the light shielding sheet 448 or the light shielding portion 440d may be in an overlapping relationship with an internal total reflection 稜鏡 (or reflective lens) 46.

It should be noted that in the above embodiments, for example, the light valve module and the internal total reflection 稜鏡 are only exemplified, for example, the internal total reflection 稜鏡 can be replaced by a field lens, a mirror or a reflection lens, and when the optical path adjustment mechanism is applied to different When the optical system is disposed at different positions of the optical system, the light shielding structure (for example, the light shielding portion 440d or the light shielding sheet 448) can also be used to shield unnecessary light or stray light generated by different light members. Furthermore, the material of the light-shielding structure is not limited, for example, may be plastic or metal, and if the light-shielding structure is formed of a metal heat conductive material, the light-shielding structure may also extend to contact the light valve module 450 to provide assistance to the light valve module. Group 450 cooling function. In addition, the light-shielding structure can also be sized and shaped to be an aperture between the light valve module 450 and the projection lens (not shown), or can be used as a light machine cover to provide a dustproof effect.

It should be noted that the individual features mentioned in the various embodiments of the present invention are not only applicable to the embodiments in which the features are illustrated or described, that is, the features can be applied to various other embodiments of the present invention or other descriptions are not illustrated. The variation is not limited. For example, the embodiment of FIG. 15A shows that the frame 440 has a notch 442 and a light blocking structure 440d. However, the frame 440 having the notch 442 can also be combined with the frame 440 as shown in FIG. 17A. A separate light shield 448. Alternatively, in another embodiment as shown in FIG. 18, the lens 212 can be disposed on a carrier such as the lens holder 214 by a leaf spring 232, and two independent coil groups 222 can be respectively disposed on the lens holder 214. The two diagonal sides.

While the present invention has been described in its preferred embodiments, the present invention is not intended to limit the invention, and the present invention may be modified and modified without departing from the spirit and scope of the invention. The scope of protection is subject to the definition of the scope of the patent application. In addition, any of the objects or advantages or features of the present invention are not required to be achieved by any embodiment or application of the invention. In addition, the abstract sections and headings are only used to assist in the search of patent documents and are not intended to limit the scope of the invention.

Claims (10)

An optical path adjusting mechanism comprises: a linking member comprising an optical element capable of deflecting light, wherein the connecting member has a concave portion in a thickness direction of the circumference; and a coil group is disposed around the concave portion of the linking member And surrounding the optical component; and a transmission member, one end of the transmission member is coupled to the linkage. The optical path adjusting mechanism according to claim 1, wherein the optical component is a lens, and the coil set is a coil. The optical path adjusting mechanism according to claim 1 or 2, wherein the transmission member is a spring, a leaf spring, a wire spring, a flexible sheet member or a flexible blade member. The optical path adjusting mechanism according to claim 1 or 2, wherein the optical element is disposed on a carrier, and the coil group is wound around a periphery of the carrier. The optical path adjusting mechanism of claim 1 or 2, wherein the connecting member is driven to rotate in a first rotational direction, the transmitting member is applied to cause the linking member to be opposite to the first rotational direction The resilience of rotation. The optical path adjusting mechanism according to claim 1 or 2, wherein the optical path adjusting mechanism satisfies one of the following conditions: (1) the transmitting member is two leaf springs disposed at two ends of the linking member, and the a connecting direction of the two leaf springs substantially coincides with a rotating shaft of the linking member, and (2) the transmitting member is a leaf spring spanning the linking member, the leaf spring having a ring portion and Two extending portions extending from the annular portion toward the two ends of the linking member, and each of the extending portions respectively overlaps the linking member. The optical path adjusting mechanism according to claim 1 or 2, wherein the coil bobbin is wound out of a range, and the transmitting member is located outside the winding range. The optical path adjusting mechanism according to claim 1 or 2, wherein the peripheral thickness direction of the linking member is provided with a plurality of concave portions which are discontinuous from each other. An optical path adjusting component comprising: a lens having a stepped portion in a thickness direction of an outermost edge of the lens, wherein the stepped portion includes a plurality of sidewalls connected to each other; and a coil wound around the sidewalls of the stepped portion Near the side wall of the center of the lens. The optical path adjusting component of claim 2, wherein the axis of the coil is substantially parallel to a normal direction of the lens and is disposed in a plurality of turns around the lens.