TWI730733B - Projector - Google Patents

Abstract

A projector includes a lens, a first base, a lock member, a second base and a first fixing member. The lens includes at least one adjusting member. The first base is disposed with respect to the lens. The lock member is disposed on the at least one adjusting member. The second base is disposed with respect to the lock member. When the first fixing member fixes the second base to the first base, the second base pushes the lock member, such that the lock member forces the at least one adjusting member on the lens tightly.

Description

Projector

The present invention relates to a projector, in particular to a projector that can prevent the projection setting from being changed due to collision or vibration.

Recently, the application of projectors has become more and more extensive. In addition to meeting reports in general offices, projectors are often used in various seminars or academic courses due to their audio-visual playback functions. Generally speaking, a projector includes optical elements such as a lens, a light source, and an opto-mechanical module. The light source is used to emit a light beam. Therefore, the lens is an extremely important optical element in the projector. At present, most of the projector lenses are provided with a zoom adjustment ring and a focus adjustment ring to provide a zoom adjustment function and a focus adjustment function. In addition, some projectors are also equipped with a displacement adjustment mechanism to adjust the displacement of the lens. When using the projector, the user will first adjust the relevant projection settings (for example, the size, focal length and/or position of the projected image) using the above components. However, when the projector is collided, the above-mentioned components will be displaced due to the collision, causing the projection setting to change. In addition, when the projector is installed in a place where vibrations may occur, the above-mentioned components will also be displaced due to the vibrations, which will change the projection settings.

The present invention provides a projector that can prevent the projection setting from being changed due to collision or vibration, so as to solve the above-mentioned problems.

According to an embodiment, the projector of the present invention includes a lens, a first base, a locking member, a second base, and a first fixing member. The lens includes at least one adjustment piece. The first base is arranged relative to the lens. The locking piece is arranged on at least one adjusting piece. The second base is arranged relative to the locking member. When the first fixing member locks the second base to the first base, the second base pushes against the locking member, so that the locking member presses the at least one adjusting member to the lens.

In another embodiment, the projector may further include a housing, a displacement adjustment mechanism, and a second fixing member. The lens is arranged in the housing. The displacement adjustment mechanism is arranged in the housing, and the lens is connected to the displacement adjustment mechanism. The second fixing member locks the second base on the shell.

In summary, the present invention utilizes the cooperation of the first base, the locking member, the second base and the first fixing member to press the adjustment member (for example, the zoom adjustment ring and/or the focus adjustment ring) on the lens . Therefore, the adjustment member will not be displaced due to collision or vibration, so that the projection setting (that is, the size and/or focal length of the projected image) will not change. In addition, when a lens displacement adjustment mechanism is provided in the projector, the present invention can further lock the second base on the housing by the second fixing member. In another embodiment, when the first base is the housing of the projector, the present invention can use the first base, the locking member, the second base and the first fixing member to cooperate with each other, and at the same time, the adjusting member is pressed tightly. On the lens, and fix the lens. In this way, the lens will not be displaced due to collision or vibration, so that the projection setting (that is, the position of the projected image) will not change.

The advantages and spirit of the present invention can be further understood from the following detailed description of the invention and the accompanying drawings.

Please refer to Figures 1 to 6. Figure 1 is a perspective view of a projector 1 according to an embodiment of the present invention, Figure 2 is a perspective view of the internal components of the projector 1 in Figure 1, and Figure 3 is a perspective view of the internal components of the projector 1 in Figure 1. 2 is an exploded view of the element in Figure 2, Figure 4 is a cross-sectional view of the element in Figure 2 along the line XX, Figure 5 is a perspective view of the locking member 14 in Figure 3 disposed on the adjusting member 100 from another perspective , Fig. 6 is a perspective view of the first fixing member 18 and the second fixing member 24 in Fig. 1 detached.

As shown in FIGS. 1 to 4, the projector 1 includes a lens 10, a first base 12, a locking member 14, a second base 16, a first fixing member 18, a housing 20, A displacement adjustment mechanism 22 and a second fixing member 24. In this embodiment, the projector 1 may include four first fixing members 18 and two second fixing members 24, but it is not limited to this. It should be noted that the number of the first fixing member 18 and the second fixing member 24 can be determined according to actual applications. Generally speaking, the projector 1 will also be equipped with software and hardware components necessary for operation, such as light source, optical engine, controller, circuit board, memory, power supply, application program, communication module, etc., depending on the actual situation. Depending on the application.

The lens 10 includes at least one adjustment element. In this embodiment, the lens 10 may include two adjustment members 100 and 102, as shown in FIGS. 3 and 4. For example, the adjustment member 100 can be a zoom adjustment ring, and the adjustment member 102 can be a focus adjustment ring, but it is not limited to this. The zoom adjustment ring can rotate relative to the lens to adjust the size of the projected image, and the focus adjustment ring can rotate relative to the lens to adjust the focal length of the projected image. In another embodiment, the lens 10 may only include the adjusting member 100 or the adjusting member 102, depending on the actual application. In addition, the lens 10 and the displacement adjustment mechanism 22 are both disposed in the housing 20, and the lens 10 is connected to the displacement adjustment mechanism 22. The displacement adjustment mechanism 22 may include two knobs 220 exposed from the housing 20, so that the user can manipulate the knob 220 to adjust the displacement of the lens (ie, adjust the position of the projected image). It should be noted that the structural design and operating principle of the displacement adjusting mechanism 22 are well-known to those skilled in the art, and will not be repeated here.

The first base 12 is disposed opposite to the lens 10, the locking member 14 is disposed on the adjusting members 100 and 102, and the second base 16 is disposed opposite to the locking member 14. In this embodiment, the first base 12 is disposed on the lens 10 and the locking member 14 is sandwiched between the first base 12 and the second base 16. In this embodiment, the first base 12 and the locking member 14 may be ring-shaped and sleeved on the lens 10. When the locking member 14 is disposed on the adjusting members 100 and 102, the locking member 14 abuts against the adjusting members 100 and 102 toward the radial direction D1 of the lens 10, as shown in FIG. In this embodiment, the first base 12 may have a plurality of studs 120, and the first fixing member 18 may be a nut. In another embodiment, the stud 120 can also be replaced with a screw hole, and the first fixing member 18 can also be a screw.

After the first base 12, the locking member 14, the second base 16 and the lens 10 are assembled with each other, the stud 120 of the first base 12 penetrates the locking member 14 and the second base 16 and is exposed from the housing 20. As shown in Figure 6. At this time, the first fixing member 18 can be locked on the stud 120 to lock the second base 16 to the first base 12. When the first fixing member 18 locks the second base 16 to the first base 12, the second base 16 will push the locking member 14 so that the locking member 14 presses the adjusting members 100 and 102 onto the lens 10.

As shown in FIG. 4, the inner side of the first base 12 may have a first inclined surface 122, and the outer side of the locking member 14 may have a second inclined surface 140. When the locking member 14 is sandwiched between the first base 12 and the second base 16, the first inclined surface 122 of the first base 12 is opposite to the second inclined surface 140 of the locking member 14. Therefore, when the first fixing member 18 locks the second base 16 to the first base 12, the second base 16 pushes the locking member 14 toward the first base 12. At this time, the second inclined surface 140 of the locking member 14 is pressed by the first inclined surface 122 of the first base 12, so that the locking member 14 presses the adjusting members 100 and 102 on the lens 10 in the radial direction D1 of the lens 10. In this embodiment, the locking member 14 may be an elastic body, such as rubber, foam, sponge or other elastic elements. Therefore, the locking member 14 will be elastically deformed when pressed by the first base 12 to press the adjusting members 100 and 102 against the lens 10. In this way, the adjusting members 100 and 102 will not be displaced due to collision or vibration, so that the projection setting (that is, the size and/or focal length of the projected image) will not be changed.

In this embodiment, the locking member 14 can further abut against the adjusting members 100 and 102 toward the axial direction D2 of the lens 10, as shown by regions R1 and R2 in FIG. 4. Therefore, when the first fixing member 18 locks the second base 16 to the first base 12, the second base 16 can push the locking member 14 toward the axial direction D2 of the lens 10, so that the locking member 14 faces the lens 10 The axis D2 of 10 presses the adjusting members 100 and 102 onto the lens 10. In this way, the adjusting members 100 and 102 can be more firmly pressed on the lens 10 to prevent the adjusting members 100 and 102 from being displaced due to collision or vibration.

In addition, as shown in FIG. 5, the adjusting member 100 may have a first limiting structure 104, and the locking member 14 may have a second limiting structure 142. In this embodiment, the first limiting structure 104 may be a protrusion (for example, a lever) on the adjusting member 100, and the second limiting structure 142 may be a notch corresponding to the first limiting structure. In another embodiment, the first limiting structure 104 may also be a notch, and the second limiting structure 142 may also be a protrusion corresponding to the first limiting structure. When the locking member 14 is disposed on the adjusting member 100, the second limiting structure 142 and the first limiting structure 104 can cooperate with the limiting adjusting member 100 (as shown in FIG. 5), so that the adjusting member 100 cannot be locked relative to the adjusting member 100. 14 rotation.

As shown in FIG. 6, the housing 20 may have a fixing hole 200, and the second base 16 may have an opening 160. In this embodiment, the housing 20 may have two fixing holes 200, and the second base 16 may have two openings 160, but it is not limited to this. It should be noted that the number of fixing holes 200 and openings 160 can be determined according to actual applications. The opening 160 of the second base 16 is larger than the fixing hole 200 of the housing 20. Therefore, when the second base 16 is disposed on the lens 10, and the user operates the displacement adjusting mechanism 22 to adjust the displacement of the lens 10, the fixing hole 200 will still be exposed in the opening 160 without being affected by the second base 16 Cover up. After the adjustment of the displacement of the lens 10 is completed, the user can lock the second base 16 on the housing 20 by the second fixing member 24. Furthermore, the second fixing member 24 is locked to the fixing hole 200 of the housing 20 through the opening 160 of the second base 16 to lock the second base 16 to the housing 20. In this way, the lens 10 will not be displaced due to collision or vibration, so that the projection setting (that is, the position of the projected image) will not be changed.

Please refer to FIG. 7, which is a perspective view of the locking member 14 ′ disposed on the adjusting member 100 according to another embodiment of the present invention. The main difference between the locking element 14' and the aforementioned locking element 14 is that the locking element 14' is a partial section of the locking element 14, rather than a ring. In other words, the present invention can determine the size of the locking member according to the actual application.

Please refer to Figures 8 to 12. Figure 8 is a perspective view of a projector 1'according to another embodiment of the present invention, Figure 9 is a perspective view of the internal components of the projector 1'in Figure 8, and Figure 10 The figure is an exploded view of the element in Figure 9, Figure 11 is a cross-sectional view of the projector 1'in Figure 8 along the line YY, and Figure 12 is a cross-sectional view of the element in Figure 9 along the line ZZ.

The main difference between the projector 1'and the aforementioned projector 1 is that the first base 12' of the projector 1'is the casing of the projector 1', and the projector 1'does not include the aforementioned independent first The base 12 is shown in Figs. 8-12. In this embodiment, the locking member 14 abuts against the adjusting members 100 and 102 toward the axial direction D2 of the lens 10. As shown in FIG. 12, the locking member 14 can abut against the plurality of contact surfaces 1000, 1002, 1020, 1022 of the adjusting member 100, 102 toward the axial direction D2 of the lens 10, and the plurality of contact surfaces 1000, 1002, 1020, 1022 is coplanar or non-coplanar. In this embodiment, the contact surface 1000 of the adjustment member 100 and the contact surface 1020 of the adjustment member 102 are coplanar, and the contact surface 1002 of the adjustment member 100 and the contact surface 1022 of the adjustment member 102 are not coplanar.

As shown in FIG. 11, the first base 12' of the projector 1'can have a plurality of screw holes 124, and the first fixing member 18' of the projector 1'can be screws. Therefore, the first fixing member 18' can be locked to the screw hole 124 of the first base 12' through the opening 160 of the second base 16, so as to lock the second base 16 to the first base 12' on. When the first fixing member 18' locks the second base 16 to the first base 12', the second base 16 pushes the locking member 14 toward the axial direction D2 of the lens 10, so that the locking member 14 faces the lens The axis D2 of 10 presses the adjusting members 100 and 102 onto the lens 10. In this way, the adjusting members 100 and 102 will not be displaced due to collision or vibration, so that the projection setting (that is, the size and/or focal length of the projected image) will not be changed. At the same time, since the first base 12' is the casing of the projector 1', the lens 10 will also be fixed by the first base 12', the second base 16 and the first fixing member 18'. In this way, the lens 10 will not be displaced due to collision or vibration, so that the projection setting (that is, the position of the projected image) will not be changed.

Compared with the above-mentioned projector 1, the projector 1'can use the first base 12', the second base 16 and the first fixing member 18' to simultaneously fix the adjusting members 100, 102 and the lens 10, which is quite convenient.

Please refer to Figures 13 to 15. Figure 13 is a perspective view of a projector 1" according to another embodiment of the present invention. Figure 14 is a partial exploded view of the projector 1" in Figure 13. Figure 15 is a cross-sectional view of the projector 1" in Figure 13 along the line WW.

The main difference between the projector 1" and the aforementioned projector 1'is that the projector 1" includes a plurality of locking members 14a, 14b, a plurality of second bases 16a, 16b, and a plurality of first fixing members 18a. , 18b, as shown in Figure 13 to Figure 15. It should be noted that the first base 12" of the projector 1" is still the housing of the projector 1". In addition, the number of the locking member, the second base and the first fixing member can be determined according to actual applications. In this embodiment, each locking member 14a, 14b, each second base 16a, 16b, and each first fixing member 18a, 18b cooperate with each other to press each adjusting member 100, 102 against the lens 10. In this embodiment, the locking members 14a, 14b may be L-shaped, but not limited to this.

As shown in Figure 15, the first base 12" of the projector 1" may have a plurality of screw holes 124a, 124b, and the first fixing members 18a, 18b of the projector 1" may be screws. After the locking member 14a and the second base 16a are sequentially arranged on the adjusting member 100, the first fixing member 18a can be locked to the screw of the first base 12" through the opening 126 of the second base 16a. The hole 124a is used to lock the second base 16a on the first base 12". When the first fixing member 18a locks the second base 16a to the first base 12", the second base 16a pushes the locking member 14a toward the axial direction D2 of the lens 10, so that the locking member 14a faces the lens The axis D2 of 10 presses the adjusting member 100 on the lens 10. In addition, after the locking member 14b and the second base 16b are sequentially arranged on the adjusting member 102, the first fixing member 18b can be locked to the first base 12'' through the opening 126 of the second base 16b. The screw hole 124b is used to lock the second base 16b on the first base 12". When the first fixing member 18b locks the second base 16b to the first base 12", the second base 16b pushes the locking member 14b toward the axial direction D2 of the lens 10, so that the locking member 14a faces the lens The axis D2 of 10 presses the adjusting member 102 on the lens 10. In this way, the adjusting members 100 and 102 will not be displaced due to collision or vibration, so that the projection setting (that is, the size and/or focal length of the projected image) will not be changed. In addition, since the first base 12" is the housing of the projector 1", the lens 10 will also be protected by the first base 12", the second bases 16a, 16b and the first fixing members 18a, 18b. fix. In this way, the lens 10 will not be displaced due to collision or vibration, so that the projection setting (that is, the position of the projected image) will not be changed.

Compared with the above-mentioned projector 1', the adjusting members 100 and 102 of the projector 1" can be locked with the corresponding locking member, the second base and the first fixing member, respectively, without the need to lock the adjusting member at the same time 100, 102.

Please refer to Figures 16 to 20. Figure 16 is a perspective view of a projector 1''' according to another embodiment of the present invention, and Figure 17 is a perspective view of the projector 1''' in Figure 16 Figure 18 is a perspective view of the internal components of the projector 1''' in Figure 16, Figure 19 is an exploded view of the components in Figure 18, and Figure 20 is the projector 1 in Figure 16. '''A section view along the line VV.

The main difference between the projector 1"' and the above-mentioned projectors 1, 1', 1" is that the first fixing part of the projector 1"' locks the second base to the radial direction of the lens. First base. As shown in FIGS. 16 to 20, the projector 1'" includes a plurality of locking members 14c-14e, a plurality of second bases 16c-16e, and a plurality of first fixing members 18c-18e. It should be noted that the first base 12'" of the projector 1'" is still the housing of the projector 1"'. In addition, the number of the locking member, the second base and the first fixing member can be determined according to actual applications. In this embodiment, the locking members 14c-14e, the second bases 16c-16e, and the first fixing members 18c-18e cooperate with each other to press the adjusting members 100 and 102 against the lens 10.

As shown in Figure 20, the upper and lower sides of the first base 12''' of the projector 1''' may have a plurality of screw holes 124c~124e, and the first fixing member 18c~ of the projector 1''' 18e can be a screw. The first fixing members 18c-18e can be respectively locked in the screw holes 124c-124e, and exposed from the first base 12"'. In this embodiment, each of the second bases 16c-16e may have a slot 162, so that one end of each of the first fixing members 18c-18e can be buckled in the slot 162 of each of the second bases 16c-16e. In this embodiment, the locking members 14c, 14d abut on opposite sides of the adjusting member 100 toward the radial direction D1 of the lens 10, and the second bases 16c, 16d abut on the locking members 14c, 14d, respectively. In addition, the locking member 14e abuts against one side of the adjusting member 102 toward the radial direction D1 of the lens 10, and the second base 16e abuts against the locking member 14e.

When the first fixing members 18c-18e are locked toward the radial direction D1 of the lens 10, the first fixing members 18c-18e will lock the second bases 16c-16e to the first base toward the radial direction D1 of the lens 10 12'''. At the same time, the second base 16c-16e pushes the locking members 14c-14e toward the radial direction D1 of the lens 10, so that the locking members 14c-14e press the adjusting members 100, 102 on the lens 10 toward the radial direction D1 of the lens 10. . In this way, the adjusting members 100 and 102 will not be displaced due to collision or vibration, so that the projection setting (that is, the size and/or focal length of the projected image) will not be changed. In addition, since the first base 12"' is the casing of the projector 1'", the lens 10 will also be protected by the first base 12"', the second bases 16c-16e, and the first fixing member. 18c~18e fixed. In this way, the lens 10 will not be displaced due to collision or vibration, so that the projection setting (that is, the position of the projected image) will not be changed. Furthermore, the first fixing members 18c-18e are attached to two opposite sides of the lens 10 to apply force to the lens 10, so that the force of the lens 10 can be averaged. In another embodiment, for the adjusting member 100, the locking member 14c, the second base 16c and the first fixing member 18c may be omitted, or the locking member 14d, the second base 16d and the first fixing member 18d may be omitted, depending on It depends on the actual application.

In the above embodiments, the locking member can be an elastic body, such as rubber, foam, sponge or other elastic elements, depending on the actual application.

In summary, the present invention utilizes the cooperation of the first base, the locking member, the second base and the first fixing member to press the adjustment member (for example, the zoom adjustment ring and/or the focus adjustment ring) on the lens . Therefore, the adjustment member will not be displaced due to collision or vibration, so that the projection setting (that is, the size and/or focal length of the projected image) will not change. In addition, when a lens displacement adjustment mechanism is provided in the projector, the present invention can further lock the second base on the housing by the second fixing member. In another embodiment, when the first base is the housing of the projector, the present invention can use the first base, the locking member, the second base and the first fixing member to cooperate with each other, and at the same time, the adjusting member is pressed tightly. On the lens, and fix the lens. In this way, the lens will not be displaced due to collision or vibration, so that the projection setting (that is, the position of the projected image) will not change. The foregoing descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made in accordance with the scope of the patent application of the present invention shall fall within the scope of the present invention.

1,1',1'',1''': projector 10: lens 12,12',12``,12''': first base 14,14',14a~14e: lock piece 16,16a~16e: second base 18, 18', 18a~18e: the first fixing part 20: shell 22: Displacement adjustment mechanism 24: second fixing part 100, 102: adjustment parts 104: The first limit structure 120: Stud 122: first slope 124, 124a~124e: screw hole 140: second slope 142: The second limit structure 160: opening 162: card slot 200: fixed hole 220: Knob 1000, 1002, 1020, 1022: contact surface D1: radial D2: Axial R1, R2: area V, W, X, Y, Z: section line

Figure 1 is a perspective view of a projector according to an embodiment of the invention. Figure 2 is a perspective view of the internal components of the projector in Figure 1. Figure 3 is an exploded view of the components in Figure 2. Figure 4 is a cross-sectional view of the element in Figure 2. Fig. 5 is a perspective view of the locking member in Fig. 3 arranged on the adjusting member from another perspective. Fig. 6 is a perspective view of the first fixing part and the second fixing part in Fig. 1 detached. Fig. 7 is a perspective view of a locking member disposed on an adjusting member according to another embodiment of the present invention. Fig. 8 is a perspective view of a projector according to another embodiment of the invention. Figure 9 is a perspective view of the internal components of the projector in Figure 8. Figure 10 is an exploded view of the components in Figure 9. Figure 11 is a cross-sectional view of the projector in Figure 8. Figure 12 is a cross-sectional view of the element in Figure 9. Figure 13 is a perspective view of a projector according to another embodiment of the invention. Figure 14 is a partial exploded view of the projector in Figure 13. Figure 15 is a cross-sectional view of the projector in Figure 13. Figure 16 is a perspective view of a projector according to another embodiment of the invention. Figure 17 is a perspective view of the projector in Figure 16 from another perspective. Figure 18 is a perspective view of the internal components of the projector in Figure 16. Figure 19 is an exploded view of the components in Figure 18. Figure 20 is a cross-sectional view of the projector in Figure 16.

1: Projector

10: lens

12: The first base

14: Locking pieces

16: second base

18: The first fixing part

22: Displacement adjustment mechanism

24: second fixing part

100, 102: adjustment parts

104: The first limit structure

120: Stud

122: first slope

140: second slope

D1: radial

D2: Axial

R1, R2: area

Claims (12)

A projector that includes: One lens, including at least one adjustment piece; A first base set relative to the lens; A locking piece arranged on the at least one adjusting piece; A second base arranged relative to the locking member; and A first fixing part; Wherein, when the first fixing member locks the second base to the first base, the second base pushes against the locking member, so that the locking member presses the at least one adjusting member on the lens . The projector according to claim 1, wherein the first base is disposed on the lens, and the locking member is sandwiched between the first base and the second base. The projector according to claim 2, wherein the locking member abuts against the at least one adjusting member in a radial direction of the lens, the first base has a first inclined surface, the locking member has a second inclined surface, the The first inclined surface is opposite to the second inclined surface. When the first fixing member locks the second base to the first base, the second base pushes the locking member toward the first base, And the second inclined surface is pressed by the first inclined surface, so that the locking member presses the at least one adjusting member on the lens in the radial direction of the lens. The projector according to claim 1, wherein the locking member abuts against the at least one adjusting member in the axial direction of the lens, and when the first fixing member locks the second base to the first base The second base pushes the locking member toward the axial direction of the lens, so that the locking member presses the at least one adjusting member on the lens toward the axial direction of the lens. The projector according to claim 1, wherein the at least one adjusting member has a first limiting structure, the locking member has a second limiting structure, and when the locking member is disposed on the at least one adjusting member, the The second limiting structure cooperates with the first limiting structure to limit the at least one adjusting member. The projector described in claim 1, additionally including: A housing in which the lens is arranged; A displacement adjustment mechanism disposed in the housing, and the lens is connected to the displacement adjustment mechanism; and A second fixing member locks the second base on the shell. The projector according to claim 6, wherein the casing has a fixing hole, the second base has an opening, the opening is larger than the fixing hole, and the second fixing member is locked to the fixing hole through the opening The fixing hole is used to lock the second base on the shell. The projector according to claim 1, wherein the first base is a housing of the projector, the locking member abuts against the at least one adjusting member in the axial direction of the lens, and when the first fixing member is When the second base is locked to the first base, the second base pushes the locking member toward the axial direction of the lens, so that the locking member presses the at least one adjusting member toward the axial direction of the lens On the lens. The projector according to claim 1, wherein the locking member abuts against a plurality of contact surfaces of the at least one adjusting member in an axial direction of the lens, and the plurality of contact surfaces are coplanar or non-coplanar. The projector according to claim 1, wherein the first base is a housing of the projector, the lens includes a plurality of adjustment parts, and the projector includes a plurality of locking parts, a plurality of second bases, and a plurality of A first fixing piece, each of the locking piece, each of the second base, and each of the first fixing pieces cooperate with each other to press each of the adjusting pieces against the lens. The projector according to claim 1, wherein the locking member is an elastic body. The projector according to claim 1, wherein the first fixing member locks the second base to the first base toward the radial direction of the lens, and the second base locks the locking member toward the lens Pushing in the radial direction makes the locking member press the at least one adjusting member against the lens in the radial direction of the lens.

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