TWI494632B - Projector and optical component adjustment system thereof - Google Patents

Description

Projector and its optical component adjustment system

The present invention relates to an alignment system, and more particularly to an optical component adjustment system for use in a projector.

Wafer-level arrays of imaging systems provide the advantages of vertical (ie, along the optical axis) integration capabilities and parallel components. It is known that traditional wafer level imaging systems suffer from the lack of precise integration and parallel components. Due to non-uniform or systematic deviations (including displacement and rotation) of the optical element relative to an optical axis, the offset of the optical element can significantly reduce the integrity of one or more imaging systems of the entire array. In the rotational offset of the common substrate, the offset of the optical element is proportional to the distance from the center of rotation of the substrate to the optical element. For example, a rotational misalignment of one milliradian (0.0573 degrees) can cause a 150 micron offset to an optical component near the perimeter of the substrate for a 300 mm substrate, thereby significantly reducing the quality of the imaging system. Conventional wafer level techniques are generally only aligned with mechanical tolerances of a few microns, and cannot be aligned with optical tolerances (ie, approximately the wavelength of the associated electromagnetic energy), which is the alignment accuracy required for precision imaging system fabrication.

In a projector system, the offset of the optical components can significantly degrade the quality of the imaging system. Referring to the first figure, it shows a schematic view of the center of the lens aligned with the optical axis. In a conventional alignment method, the adjustment system includes two screws 10, 20 and deformable springs 30, 40. The bolts 10, 20 and the deformable springs 30, 40 are utilized for adjustment and positioning of the horizontal and vertical (X-Y axis) positions. Use the image display to see if the center of the lens is aligned with the optical axis. The optical axis is shown as a smaller circular pattern 41, the center of the optical axis is the center of the circular pattern 41, and the lens is shown as a larger circular pattern 42. For example, the lens has a lens shift before it is adjusted. If the lens (center) is biased in the direction of (-Y), the bolt 10 is rotated upward to make the spring 40 looser. The Y-axis position of the center of the circle coincides with the Y-axis position of the center of the small circle; if the lens (center) is oriented in the direction of (-X), the bolt 20 is rotated to the left to make the spring 30 looser. The X-axis position of the center of the large circle coincides with the X-axis position of the center of the small circle, as shown in Figure 1. When the center position of the large circle coincides with the center position of the small circle, it means that the center of the lens has completed the alignment of the optical axis. Connect Next, the bolts 10, 20 of the adjustment system are fixed by UV glue to complete the alignment procedure. Although the method of aligning the lens by loosening or tightening the spring with a rotating bolt is convenient and simple, the springs 30, 40 may be deformed due to metal fatigue after a period of time, and the lens is again deflected. The quality of the image thus has an effect.

In view of the above shortcomings, the inventors have studied the improvement of these shortcomings, and finally the present invention has been produced.

SUMMARY OF THE INVENTION A primary object of the present invention is to provide an optical element adjustment system which can avoid deformation due to spring metal fatigue and cause a lack of displacement of the lens again.

Another object of the present invention is to provide an optical component adjustment system that can adjust the alignment of the optical axis via a plurality of rotational adjustment system components.

It is yet another object of the present invention to provide an optical component adjustment system that can adjust the alignment of the optical axis via rotation and linear sliding adjustment of the components of the system.

In order to achieve the above object and effect, the optical component adjustment system of the present invention comprises: a first alignment structure having a first hollow space for accommodating a lens, the centroid position of the first alignment structure being different from the center position thereof; A second alignment structure has a second hollow space to accommodate the first alignment structure, a center of mass position of the second alignment structure is different from a center position thereof, and a fixed structure for carrying the second alignment structure.

In the above optical component adjustment system, the first alignment structure has a first type of gear structure disposed at a periphery thereof, and the second alignment structure has a second type of gear structure disposed at a periphery thereof.

According to the above optical component adjustment system, wherein the first alignment structure includes a first portion for covering the lens, and the second portion has a first type of gear structure for rotating the first alignment structure .

According to the above optical element adjustment system, wherein the second alignment structure covers the first portion of the first alignment structure without covering the second portion of the first alignment structure.

According to the optical element adjustment system described above, the fixing structure has a recess to accommodate the second alignment structure.

According to another aspect of the present invention, an optical component adjustment system includes: an alignment structure having a first hollow space to accommodate a lens, a center of mass position of the alignment structure being different from a center position thereof; and a fixed structure for Carrying an alignment structure, the fixed structure has a second hollow space, so that The alignment structure is allowed to rotate and linearly slide in the second hollow space.

According to the optical element adjustment system described above, the alignment structure has a gear-like structure for rotating the alignment structure.

The above optical element adjustment system can be applied to a projector.

In order to achieve a more specific understanding of the above objects, effects and features of the present invention, the following figures are illustrated as follows:

10, 20‧‧‧ bolts

30, 40‧‧ ‧ spring

41, 42‧‧‧ round pattern

100‧‧‧Projector

101‧‧‧First Light Emitting Diode (LED) Module

102‧‧‧Second light-emitting diode module

103‧‧‧3rd LED Module

104‧‧‧First light collimator

105‧‧‧Second light collimator

106‧‧‧ Third Light Collimator

107‧‧‧Fixed devices (boards)

108‧‧‧ lens array

109, 112‧‧‧ concentrating lens

110‧‧‧High reflectivity optical coating

111, 113‧‧‧ filter

114‧‧‧稜鏡 Module

115‧‧‧Polarizing film (plate)

116‧‧‧Display module

117‧‧‧Projection lens set

120, 140‧‧‧ lens

121‧‧‧First rotating cover

121a‧‧‧First gear type structure

121b‧‧‧Part I

121c‧‧‧Part II

122‧‧‧Second rotating cover

122a‧‧‧Second gear type structure

123‧‧‧Fixed cover or body

130‧‧‧Initial Center (Lens Center)

131‧‧‧First displacement

132‧‧‧ Center

133‧‧‧ Center

141‧‧‧ lens housing

141a‧‧ class gear structure

141b‧‧‧ part one

141c‧‧‧Part II

141d‧‧‧Part III

142‧‧‧Fixed cover or body

The first figure is a schematic diagram of one of the conventional techniques for aligning the lens center with the optical axis.

The second figure is a structural diagram of an example projector.

The third drawing is a top view of the optical element adjusting system of the first embodiment of the present invention.

The fourth drawing is a front view of the optical element adjustment system of the first embodiment of the present invention.

The fifth drawing is a rear view of the optical element adjusting system of the first embodiment of the present invention.

Figure 6 is a perspective view of an optical element adjustment system of a first embodiment of the present invention.

The seventh drawing is a schematic view of the alignment of the optical elements of the first embodiment of the present invention.

The eighth drawing is a top view of the optical element adjusting system of the second embodiment of the present invention.

Figure 9 is a perspective view of an optical element adjustment system of a second embodiment of the present invention.

The tenth drawing is a schematic view of the alignment of the optical elements of the second embodiment of the present invention.

The invention is described in detail herein with reference to the particular embodiments of the invention, and the description of the invention. Therefore, the present invention may be widely practiced in other different embodiments in addition to the specific embodiments and preferred embodiments of the specification.

Referring to the second figure, it is a structural diagram of a projector of an example. The optical component adjustment system of the present invention can be applied to a projector. The structure of the projector 100 of the second figure is only one of the embodiments, and the projector structure constituted by other different component configurations can also be applied to the present invention. First, among the projector 100, a light source module based on a light emitting diode is provided, which can be used in a portable projector. The projector 100 further includes a lens array 108, a condenser lens 109 and 112, a high reflectivity optical plate 110, filters 111 and 113, and a module. 114, a polarizing film (board) 115, a display module 116, and a projection lens group (projection Lens) 117. The light source module has a first light emitting diode (LED) module 101, a second light emitting diode module 102, a third light emitting diode module 103, a first light collimator 104, and a second The light collimator 105 and the third light collimator 106. For example, the first LED module 101 is used to emit red light (R), the first LED module 101 is used to emit blue light (G), and the third LED module 103 is used. Green light (B). Therefore, the first light-emitting diode module 101, the second light-emitting diode module 102, and the third light-emitting diode module 103 can emit three primary colors of R, G, and B required for forming a full-color projection. The first light collimator 104 is optically connected to the first LED module 101 for collimating the large-angle red light and blue light emitted by the first LED module 101 to achieve the collection. The second light collimator 105 is optically connected to the second light emitting diode module 102 for collimating the blue light emitted by the second light emitting diode module 102; The straight 106 is optically connected to the third LED module 103 for collimating the green light emitted by the third LED module 103. Therefore, the three light collimators of the first optical collimator 104, the second optical collimator 105, and the third optical collimator 106 can achieve the effect of collimating the R, G, and B lights. The number and configuration of the above-mentioned light-emitting diode modules and optical collimators can be adjusted according to different situations, purposes or applications. The first optical collimator 104, the second optical collimator 105, and the third optical collimator 106 may be fixed or disposed in a fixture (board) 107.

For example, the first LED module 101, the second LED module 102, and the third LED module 103 are light sources (array LED matrix light source). ). The lens array 108 has an optical diode assembly 101, a second LED module 102, a third LED module 103, a first optical collimator 104, and a second optical collimation. The light source module of the device 105 and the third light collimator 106. The concentrating lens 109 is disposed in an adjustment housing, and optically connects the lens array 108 to further condense the R, G, and B light passing through the lens array 108. The high reflectivity optical plate 110 is optically coupled to the concentrating lens 109 to reflect red, blue, and green light after filtering through the concentrating lens 109. The high-reflectance optical plate 110 can reflect horizontal R, G, and B light to be perpendicular to R, G, and B light. The conversion from horizontal to vertical allows subsequent components to be configured in the past to reduce the length of the projector.

The filter 111 is optically coupled to the high-reflectance optical plate 110 for filtering red, blue, and green light reflected by the high-reflectance optical plate 110. The other condensing lens 112 is disposed in an adjustment casing, and optically connects the filter 111 to further condense the R, G, and B lights passing through the filter 111. Another filter 113 is optically coupled to the concentrating lens 112 for filtering red, blue, and green light after passing through the concentrating lens 112 to provide further processing. In an embodiment, Preferably, the filter is a dichroic filter. The number and arrangement of the filters of the present invention can be adjusted depending on actual needs or application conditions.

The cymbal module 114 includes two cymbals combined to optically connect the filter 113. The collected and filtered light is deflected to the polarizing film (plate) 115 via the germanium module 114, passed through the polarizing film (plate) 115 to the display module 116 for visualization, or the light is projected by the germanium module 114. The lens group 117 is focused for imaging on an external projection surface. The polarizing film (plate) 115 is, for example, a quarter-wave plate. The 稜鏡 module 114 is, for example, a polarizing beam splitter (PBS).

The light emitted by the first light emitting diode (LED) module 101, the second light emitting diode module 102, and the third light emitting diode module 103 is operated in the projector 100, and the optical axis needs to be optimized. Aurora illumination and light efficiency can achieve better projection results. There must be a better optical alignment in order to achieve the above objectives.

Referring to the third drawing, it is a top view of the optical element adjusting system of the first embodiment of the present invention. The optical element adjustment system or apparatus of the present invention can be applied to adjust or align the concentrating lenses 109 and 112 of the projector 100 described above, or other lenses; or to other electronic products having optical elements (lenses). Similarly, the present invention also utilizes image display to see if the center of the lens is aligned with the optical axis. The optical axis is shown as a smaller circular pattern 41 and the lens is shown as a larger circular pattern 42. In the optical element adjustment system or apparatus of the present embodiment, alignment of the optical axis can be accomplished only by a plurality of components of the rotation adjustment system. After the alignment is completed, the adjustment system is fixed by a bolt 10. In the present embodiment, the adjustment system or device does not require the use of a spring, so that deformation due to fatigue of the spring metal can be avoided, causing the lens to be displaced again. The optical component adjustment system or apparatus of the present embodiment includes a first rotating housing (first alignment structure) 121, a second rotating housing (second alignment structure) 122, and a fixed housing (fixed structure) or body 123. The first rotating outer cover 121, the second rotating outer cover 122, and the fixed outer cover or the body 123 are all rigid bodies, and the rigid structure can maintain structural invariance. The first rotating cover 121 is a lens housing of the inner lens 120 and covers the lens 120. The first rotating housing 121 has a first hollowed out area (space) that is sized or slightly larger than the lens 120 to receive and receive the lens 120. For example, the lens 120 is a circle, and the first hollow region is a circular region sized to correspond to the lens 120. The centroid position of the first rotating outer cover 121 does not coincide with the center position. The centroid position of the first rotating outer cover 121 does not coincide with the central position of the lens 120, that is, the centroid position of the first rotating outer cover 121 does not coincide with the center of the first hollowed out area. The lens 120 is attached to the first rotating housing 121 via the first hollow region such that the lens 120 is enabled with the first rotating housing 121 Rotate and rotate as shown in the fourth figure. For example, the lens 120 may be attached to the first rotating housing 121 by means of UV glue. The fourth figure is a front view of the optical element adjustment system or apparatus of the present embodiment. The first rotating outer cover 121 has a first type of gear-like structure 121a disposed at its periphery. For example, the first rotating outer cover 121 can be rotated via a first type of gear-like 121a on the dial circumference, as shown in the fifth figure. The number of teeth of the first type of gear type structure 121a is determined by the actual application. The position of the optical axis of the center of the lens 120 is determined in accordance with the number of teeth to be rotated. As such, the lens 120 can be rotated as the first rotating housing 121 rotates such that its center position of the lens 120 is changed. The fifth figure is a back view of the optical element adjustment system or apparatus of the present embodiment. The centroid position of the first rotating outer cover 121 is off center, such that its rotational axis is also off center.

The second rotating outer cover 122 is an external adjustment housing that covers the first rotating outer cover 121. The second rotating outer cover 122 has a second hollowed out area (space) sized to correspond to the first rotating outer cover 121 to receive and receive the first rotating outer cover 121. The first rotating outer cover 121 is generally circular, and the second hollowed out area is a circular area sized to correspond to the first rotating outer cover 121. The centroid position of the second rotating outer cover 122 does not coincide with the center of the lens 120, and the centroid position of the second rotating outer cover 122 also does not coincide with the center of the first hollowed out area and the center of the second hollowed out area. The centroid position of the second rotating outer cover 122 is offset from its center. Similarly, the second rotating outer cover 122 can be rotated by dialing the second type of gear structure 122a on the circumference, as shown in the fourth or fifth figure. The number of teeth of the second type of gear type structure 122a is determined depending on the actual application. The position at which the center of the lens 120 is offset is determined in accordance with the number of teeth that are dialed. The first rotating outer cover 121 and the second rotating outer cover 122 can be rotated independently. The lens 120 changes its center position by the rotation of the first rotating outer cover 121 and the second rotating outer cover 122. Therefore, the first rotating housing 121 and the second rotating housing 122 are independently rotated, and the position of the center of the lens 120 can be adjusted to align the optical axis.

A fixed housing or engine body 123 has a recess, such as a half circle groove, for receiving, receiving and carrying the second rotating housing 122, as shown in the fourth or fifth figure. Show.

Referring to the sixth drawing, it is a perspective view of the optical element adjustment system or apparatus of the first embodiment. As can be seen from the sixth figure, the lens 120 is embedded inside the first rotating outer cover 121. The first rotating housing 121 includes a first portion 121b and a second portion 121c. The first portion 121b is the first rotating outer cover 121 as seen in the front view of the fourth figure, which is the cladding portion of the cover lens 120. The second part 121c That is, the first rotating outer cover 121 seen in the rear view of the fifth figure is a rotating portion having the first type of gear structure 121a for rotating the first rotating outer cover 121. The second rotating outer cover 122 covers the covered portion (first portion 121b) of the first rotating outer cover 121 without covering the rotating portion (second portion 121c) of the first rotating outer cover 121. The first type of gear structure 121a and the second type of gear structure 122a are parallel to each other. Therefore, the first rotating outer cover 121 and the second rotating outer cover 122 can be rotated independently. The fixed outer cover or body 123 is a fixed device (structure) as a stationary basis for the rotation of the first rotating outer cover 121 and the second rotating outer cover 122. The first rotating outer cover (internal outer cover) 121 is rotated along (relative to) the second rotating outer cover (outer outer cover) 122. The second rotating outer cover (outer outer cover) 122 is rotated along (relative to) the fixed outer cover or body 123. The above-described rotational operation is performed by the gears on the first type of gear structure 121a and the gears on the second type of gear structure 122a. The first rotating outer cover 121 and the second rotating outer cover 122 can rotate independently, and thus the first rotating outer cover 121 and the second rotating outer cover 122 have their respective rotating shafts. Each axis of rotation is off-center.

Referring to the seventh drawing, which is a schematic view of the alignment of the optical elements of the first embodiment of the present invention. The second rotating outer cover 122 performs the first rotation, and the first rotating outer cover 121 performs the second rotation. For example, the lens 120 has a lens shift before the optical axis is adjusted and aligned, that is, the initial center 130 of the lens 120 has a displacement relative to the center 132 of the fixed cover or the body 123, and the initial of the lens 120. The center 130 also has a displacement relative to the center 133 of the second rotating housing (adjusting housing) 122, as shown in the seventh diagram. The first amount of displacement is different from the second amount of displacement. In the first rotation, the second rotating outer cover 122 rotates (relatively) to the fixed outer cover or the body 123, and the lens center 130 moves from the initial offset position to the first displacement 131, and the broken line in the figure can be regarded as the lens center. The amount of movement (track) of the X-axis and the Y-axis. In the second rotation, the first rotating outer cover 121 rotates (relatively) with respect to the second rotating outer cover 122, and the lens center 130 moves from the first displacement 131 to the second displacement, and the broken line in the figure can be regarded as the lens center 130. The amount of movement (track) of the movement from the first displacement 131 to the X-axis and the Y-axis. When the second displacement coincides with the center 133 of the second rotating outer cover (adjusting cover) 122, the alignment of the lens center 130 is completed. The second rotation is mainly to adjust and compensate the difference between the position of the first displacement and the position of the optical axis at the X-axis and the Y-axis after the first rotation to complete the alignment. Since the first rotating outer cover 121 and the second rotating outer cover 122 are independently rotated, the rotation of the first rotating outer cover 121 and the second rotating outer cover 122 can offset, offset or adjust the offset of the center of the lens 120 to Quasi-optical axis center.

Referring to the eighth figure, which is above the optical element adjustment system of the second embodiment of the present invention view. The optical element adjustment system or apparatus of the present embodiment can be applied to adjust or align the condensing lenses 109 and 112 of the projector 100 described above, or other lenses; or to other electronic products having optical elements (lenses). Similarly, image display is used to see if the center of the lens is aligned with the optical axis. The optical axis is shown as a smaller circular pattern 41 and the lens is shown as a larger circular pattern 42. In the optical element adjustment system or apparatus of the present embodiment, the components of the rotation adjustment system and the members of the linear movement adjustment system are transmitted to complete the alignment of the optical axis. After the alignment is completed, the adjustment system is fixed by a bolt 10. Similarly, in the present embodiment, the adjustment system or device does not require the use of a spring, so that deformation due to fatigue of the spring metal can be avoided, causing the lens to be displaced again. The optical component adjustment system or apparatus of the present embodiment includes a lens housing (alignment structure) 141 and a fixed housing (structure) or body 142. The lens housing 141 and the fixed housing or the body 142 are both rigid bodies, and the rigid structure can maintain structural invariance. The lens housing 141 is an outer cover of the inner lens 140 and covers the lens 140. The lens housing 141 has a first hollowed out area (space) that is sized or slightly larger than the lens 140 to accommodate and receive the lens 140. The fixed outer cover or body 142 has a second hollow space such that the lens housing 141 can be rotated and linearly slid in the second hollow space of the fixed outer cover or body 142. For example, the lens 140 is a circle, and the first hollow region is a circular region sized to correspond to the lens 140. The centroid position of the lens housing 141 does not coincide with the center of the lens 140, that is, the centroid position of the lens housing 141 does not coincide with the center of the first hollow area. Through the first hollow region, the lens 140 is attached to the lens housing 141 such that the lens 140 is rotated or moved with the lens housing 141 as shown in the eighth diagram. For example, the lens 140 can be attached to the lens housing 141 using an ultraviolet glue. The left side of the ninth diagram illustrates a front view of the optical component adjustment system or apparatus of the present embodiment. For example, the lens housing 141 can be rotated via a gear-like structure 141a on the dial circumference, as shown in the upper left illustration of the ninth figure. The number of teeth of the gear-like structure 141a is determined by the number of teeth, and the size is determined depending on the actual application. The position of the optical axis of the lens 140 is determined in accordance with the number of teeth to be rotated. As such, the lens 140 can be rotated as the lens housing 141 rotates such that its center position of the lens 140 is changed. The lower left view of the ninth diagram illustrates a rear view of the optical component adjustment system or apparatus of the present embodiment. The centroid position of the lens housing 141 is offset from its center such that its axis of rotation is also off-center. After rotating the lens housing 141, the second portion 141c of the lens housing 141 is then linearly moved to complete the alignment of the optical axis, as illustrated in the lower left diagram of the ninth figure.

Referring to the right side of the ninth diagram, which is a perspective view of an optical component adjustment system or apparatus of a second embodiment of the present invention. As can be seen from the diagram on the right side of the ninth figure, the lens 140 is embedded in the lens housing 141. internal. The lens housing 141 includes a first portion 141b, a second portion 141c, and a third portion 141d. The first portion 141b, that is, the lower left diagram of the ninth diagram, and the right diagram of the ninth diagram illustrate the covered portion of the cover lens 140 as seen in the front view. The second portion 141c, i.e., the lower left diagram of the ninth diagram, and the right diagram of the ninth diagram, illustrate the linearly movable portion of the linearly movable lens housing 141 as seen in the front view. The third portion 141d is a rotatable moving portion of the rotatable moving lens housing 141 as seen in the perspective view of the right side of the ninth diagram. The third portion 141d is a rotatable moving portion having a gear-like structure 141a (not shown in the lower left diagram of the ninth diagram and the right diagram of the ninth diagram) to rotate the lens housing 141. Therefore, the rotatable moving portion and the rotatable moving portion can move independently. The fixed outer cover or body 142 is a fixed device that serves as a stationary basis for the movement of the lens housing 141. The lens housing 141 is rotated and linearly moved relative to (relative to) the fixed housing or body 142. The above-described rotational motion is performed by a gear on the gear-like structure 141a, and its rotational axis is off-center.

Referring to the tenth embodiment, it is a schematic view of the alignment of the optical elements of the second embodiment of the present invention. The lens housing 141 is rotated and then linearly moved. For example, before the optical axis is adjusted and aligned, the lens 140 has an offset, that is, the initial center of the lens 140 has a displacement relative to the center of the fixed housing or the body 142, and the initial center of the lens 140 is opposite to the lens housing 141. There is also a displacement in the center of the (adjustment cover). The first amount of displacement is different from the second amount of displacement. Referring to the left diagram below the tenth figure, the cross shape represents the predetermined optical axis center. In rotation, the lens housing 141 rotates (relatively) to the fixed housing or body 142 such that the center of the lens is aligned with the parallel (X) axis of the center of the optical axis, as in the middle view of the lower portion of the tenth figure. Then, in linear movement, the second portion 141c of the lens housing 141 slides (linearly moves) (relatively) to the fixed housing or body 142 such that the center of the lens is aligned with the center of the optical axis, as shown in the lower right of the tenth figure. . That is, the center of the lens coincides with the center of the optical axis, that is, the alignment of the center of the lens is completed. The linear movement is mainly to adjust and compensate the difference between the position of the lens and the position of the optical axis at the X axis after the rotation to complete the alignment.

The above rotating action or linear sliding action can be manipulated manually or automatically. The above-described rotation operation or linear sliding operation may be performed by means of mechanical toothing, or may be performed by electric power or magnetic force. In an embodiment in which electrical power or magnetic force is utilized, a gear-like structure or a groove structure may not be used in the first alignment structure and the second alignment structure.

The above description is a preferred embodiment of the invention. Those skilled in the art should be able to understand the invention and not to limit the scope of the patent claims claimed herein. The scope of patent protection is subject to the scope of the patent application and its equivalent fields. Anyone who is familiar with this field, Modifications or modifications made by the spirit of the present invention are intended to be included within the scope of the appended claims.

120‧‧‧ lens

121‧‧‧First rotating cover

121b‧‧‧Part I

121c‧‧‧Part II

122‧‧‧Second rotating cover

122a‧‧‧Second gear type structure

123‧‧‧Fixed cover or body

Claims (4)

An optical component adjustment system comprising: a first alignment structure having a first hollow space to accommodate a lens, the first alignment structure having a centroid position different from a center position thereof; and a second alignment structure having a second hollow space to accommodate the first alignment structure, the centroid position of the second alignment structure is different from the center position thereof; and a fixed structure for carrying the second alignment structure, wherein the first pair The quasi-structure has a first type of gear structure disposed at a periphery thereof, wherein the first alignment structure includes a first portion and a second portion, the first portion is for covering the lens, and the second portion has the first portion a gear-like structure for rotating the first alignment structure, wherein the second alignment structure covers the first portion of the first alignment structure without covering the second portion of the first alignment structure The first alignment structure and the second alignment structure are independently rotated. The optical component adjustment system of claim 1, wherein the second alignment structure has a second type of gear structure disposed at a periphery thereof. A projector comprising an optical component adjustment system, wherein the optical component adjustment system comprises: a first alignment structure having a first hollow space to accommodate a lens, the centroid position of the first alignment structure being The central alignment is different; a second alignment structure has a second hollow space to accommodate the first alignment structure, the second alignment structure has a centroid position different from the center position thereof; and a fixed structure for Carrying the second alignment structure, wherein the first alignment structure has a first type of gear structure disposed at a periphery thereof, wherein the first alignment structure includes a first portion and a second portion, the first portion is used for Encapsulating the lens, the second portion having the first type of gear structure for rotating the first alignment structure, wherein the second alignment structure covers the first portion of the first alignment structure The portion, without covering the second portion of the first alignment structure, causes the first alignment structure and the second alignment structure to rotate independently. The projector of claim 3, wherein the second alignment structure has a second type of gear structure disposed at a periphery thereof.