JP3107326U - Optical module beam path adjustment device - Google Patents

Abstract

The present invention provides an adjustment structure capable of adjusting a ray trajectory in an optical module and making a light incident angle on a lens vertical.
A rotating mirror 11 and two fixed stands 12 are provided. The swivel mirror 11 has a swivel member 111, a reflector 112, two clamps 113, and a knob 114. The reflector 112 is fixed to the turning member 111 with a clamp 113. The knob 114 is attached to one end of the turning member 111 so as to jump out through the fixed stand 12, thereby rotating the turning member 111. The two fixed stands 12 are installed in the lens box 20 of the optical module and support the turning member 111. The light beam trajectory is adjusted by rotating the reflector 112 and changing its angle. The fixing stand 12 includes a screw hole 121 for fixing the lens box 20.
[Selection] Figure 3

Description

  The present invention relates to a beam trajectory adjustment structure of an optical module.

  In recent years, all electronic industries, including the high-tech industry, have developed remarkably, and modern products such as computers and peripherals, electronic devices, and office equipment have made significant progress in their functions and appearance. . Taking a scanner as an example, the resolution has been over 1200 dpi in recent years, and when the interpolation method is adopted, the resolution reaches 9600 dpi. These are also being improved from one to the next, thereby intensifying market competition. Surviving the market, suppliers are relentless in their research and development for higher performance and lower cost product production. In other words, how to produce high-performance products at low cost is an important key in research and development.

  Most scanners in the current market employ a CCD to sense the reflected light emitted from the original document being scanned. In order to map the reflected beam onto the CCD module as an accurate mapping, the beam must be incident perpendicular to the CCD module, and to improve the performance of the scanner, the trajectory of this beam can be adjusted. Necessary.

  As a practical application, the CCD module is installed on the lens box of the optical module, and the reflected light from the original document to be scanned passes through this lens box and enters the CCD module so that a mapping is made there. produce. In the optical module which is a combination of the lens box and the CCD module, the beam trajectory is adjusted, thereby producing a higher quality map. In the current technology, a three-axis and five-axis adjustment system is used for this adjustment. The three-axis adjustment system first adjusts the position of the CCD module in the vertical direction, the horizontal direction, and the vertical turning direction, and then adjusts the focal distance of the lens. On the other hand, the five-axis adjustment system first fixes the lens box, and then adjusts the CCD module in its vertical direction, horizontal-X direction, vertical turning direction, horizontal turning direction, and horizontal-Y direction.

  FIG. 1 illustrates a triaxial adjustment optical module. The triaxial adjustment optical module 200 includes a lens box 210 and a CCD module. The lens box 210 has a coupling window 210 a for installing the CCD module 220. When the CCD module is installed in the coupling window 210a, as shown in the drawing, the screw 230 is passed through the CCD module 220 and firmly fixed to the screw hole 240 of the coupling window 210a.

  Since the CCD module 220 is firmly fixed to the lens box 210, the adjustment of the triaxial adjustment optical module is easy. In other words, the adjustment of the triaxial adjustment optical module is simply completed by arranging the CCD module 220 at appropriate positions in the vertical direction, the horizontal direction, and the vertical turning direction, and then adjusting the focal length of the lens box 210. It is. The focus adjustment is to adjust the focus along the X-axis direction, and is adjusted according to the relative position along the X-axis of the CCD module 220. Although this adjustment method may be considered as a four-axis adjustment, since the focal point is adjusted only by the relative position along the X-axis of the CCD module 220, this is a three-axis adjustment from a strict point of view. It is adjustment of the adjustment optical module by.

  The advantage of the triaxial adjustment optical module is that there are few elements to be adjusted, and the cost for the adjustment is the lowest, which is widely adopted by manufacturers. However, in order to keep the cost low, the lens box 210 is usually formed by mold injection using a plastic, and the coupling window 210a is not parallel to the YZ plane due to slight defects that occur during this formation process. End up. As a result, the surface of the CCD module 220 installed on the coupling window 210a cannot keep parallel to the YZ plane. In this case, that is, since the horizontal turning adjustment of the CCD module 220 cannot be performed and the optimum adjustment cannot be performed, the scanning performance is deteriorated.

  As described above, the five-axis adjusting optical module developed for solving the problems in the three-axis adjusting optical module includes the CCD module in the vertical direction, horizontal-X direction, vertical turning direction, horizontal turning direction, and horizontal-Y direction. In this way, the scanning performance can be improved. FIG. 2 is an explanatory diagram of a five-axis adjusting optical module. As shown therein, the five-axis adjusting optical module 300 includes a lens box 310, a CCD module 320, an element 330, an element 340, and an element 350. ing. A coupling window 310 a is formed in the lens box 310 for installation of the element 330, and the CCD module 320 is installed on the element 350. As is apparent from FIGS. 1 and 2, whether or not the elements 330, 340, and 350 are included is a difference between the triaxial adjustment optical module and the five-axis adjustment optical module. 340 and 350 are used for adjustment in five directions. The five-axis adjustment optical module 300 achieves high precision, but the adjustment requires high cost. Moreover, since there are many components and the cost for them is high, the competitive ability of the product itself is reduced.

The above-described conventional optical module has the following problems.
<1> The triaxial adjustment optical module cannot adjust the CCD module in the horizontal turning direction, and cannot perform optimum adjustment.
<2> The five-axis adjusting optical module can be adjusted in five directions. However, since it requires high cost and many components, the competitive ability in the market decreases.

  The object of the present invention is to solve the above-mentioned problems of the prior art, and it is possible to adjust the ray trajectory in the optical module and to make the incident angle of the ray with respect to the lens vertical. It is to provide an adjustment structure.

  In order to solve the above-described problem, the light beam trajectory adjustment structure of the optical module according to claim 1 of the present application is arranged on the light ray trajectory, adjusts the light ray trajectory, and makes the incident angle of the light ray to the lens vertical. It is characterized by comprising the light beam starting adjustment part which adjusts so that.

  The light beam trajectory adjusting structure of the optical module according to claim 2 is characterized in that, in claim 1, the light beam activation adjusting portion is supported at both ends by two fixed stands installed on a lens box and the fixed stand, It is characterized by comprising a revolving mirror having a reflector for adjusting the ray trajectory by changing.

  According to a third aspect of the present invention, there is provided a light path adjusting structure for an optical module according to the second aspect, wherein the swivel mirror has a swivel member and two fixed clamps, and the reflector is mounted on the swivel member by the fixed clamps. It is characterized in that it is installed and fixed to.

  A light beam trajectory adjusting structure for an optical module according to claim 4 has the knob according to claim 2, wherein the swivel mirror has a swivel member and a knob formed so as to protrude the fixed stand at one end of the swivel member. The swivel member is rotated by the knob.

  The optical path adjusting structure of the optical module according to claim 5 is characterized in that, in claim 2, the fixing stand has a screw hole, and is fixed to the lens box by screwing the screw hole. It is what.

  A light beam trajectory adjustment structure of an optical module according to claim 6 is the optical module according to claim 1, wherein the light beam activation adjusting unit includes a mirror holder installed on the lens box, and a reflector installed on the mirror holder. And a knob that is fixed to the mirror holder and adjusts the ray trajectory by changing the angle of the reflector.

  The optical path adjustment structure of the optical module according to claim 7 is the optical module according to claim 6, wherein the mirror holder includes a fixed stand, a protective plate, and a fixed slot, and the fixed stands are formed at both ends of the protective plate. The fixed slot is installed on the fixed stand for installing the reflector.

  The optical path adjustment structure of the optical module according to claim 8 is characterized in that, in claim 7, the fixing stand has a screw hole, and is fixed to the lens box by screwing the screw hole. To do.

The light path adjustment structure of the optical module of the present invention can obtain at least one of the following effects by means for solving the above-described problems.
<1> The light beam trajectory adjusting structure according to the present invention includes a light beam trajectory adjusting unit, whereby the incident angle of the light beam with respect to the lens can be easily adjusted vertically.
<2> The present invention can be applied to the conventional three-axis, four-axis and five-axis adjustment optical modules, and another adjustment axis can be added.

  The beam trajectory adjustment structure in the present invention mainly has a beam trajectory adjustment unit on the ray trajectory in the optical module, thereby adjusting the ray trajectory and making the incident angle to the lens vertical. It is.

  The embodiment of the present invention includes a swivel mirror provided with a reflector and two fixed stands. The two fixed stands are installed on the lens box of the optical module and support both ends of the swivel mirror. Both ends of the swivel mirror are supported by two fixed stands, so that the swivel can be swiveled, and thereby the incident angle of the light beam can be adjusted perpendicularly to the surface of the lens. Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 3 illustrates the first embodiment of the present invention, and FIG. 4 shows a state in which the structure of the first embodiment of the present invention is installed on a lens box. The optical module according to the present invention is disposed on the light path of the optical module and includes a light path adjusting unit 10 for adjusting the incident angle of light to the lens vertically.

  The beam trajectory adjusting unit 10 in the first embodiment includes a turning mirror 11 and two fixed stands 12. The swivel mirror 11 has a swivel member 111, a reflector 112, two clasps 113, and a knob 114. The reflector 112 is fixed to the turning member 111 with a clamp 113. The knob 114 is attached to one end of the turning member 111 so as to jump out through the fixed stand 12, thereby rotating the turning member 111. The two fixed stands 12 are installed in the lens box 20 of the optical module and support the turning member 111. The light beam trajectory is adjusted by rotating the reflector 112 and changing its angle. The fixing stand 12 includes a screw hole 121 for fixing the lens box 20.

  Regarding the assembly of the first embodiment, the reflector 112 is first installed on the turning member 111 by the clamp 113, and both ends of the turning member 111 are fixed to the fixed stand 12 by the clamp 113. Next, the knob 14 is attached to the turning member 111 and completed. This is fixed to the lens box 20 with some screws 40 and screw holes 121.

  The angle adjustment of the reflector 112 is performed by rotating the knob 14. The trajectory of the light beam is adjusted by changing the angle of the reflector 112, set to an appropriate angle, and then the reflector 112 is fixed at that angle.

  As shown in FIG. 4, the incident light of the lens 30 is reflected by the reflector 112 and another mirror, and is adjusted so that the angle of the incident light with respect to the lens 30 becomes vertical by the light beam trajectory adjusting unit 10. To do.

  FIG. 5 shows a state in which the structure of Embodiment 1 of the present invention is installed on a lens box together with other parts. The incident light of the lens 30 is reflected by the mirror and then reflected by the reflector 112 and another mirror. The light beam trajectory adjustment unit 10 adjusts the angle of the incident light with respect to the lens 30 to be vertical.

  6 and 7 show a state in which the structure according to the first embodiment of the present invention is installed on the lens box together with other components. The beam trajectory adjusting unit 10 may be installed anywhere on the trajectory of the light beam. The incident light of the lens 30 is reflected by several mirrors other than the mirror, and the beam trajectory adjusting unit 10 adjusts the angle of the incident light with respect to the lens 30 to be vertical.

  The first embodiment of the present invention can be applied to the three-axis, four-axis and five-axis adjustment optical modules of the prior art described above, and another adjustment axis can be added.

  FIG. 8 illustrates the second embodiment of the present invention, and FIG. 9 shows a state in which the structure of the first embodiment of the present invention is installed on the lens box. The optical module according to the present invention is disposed on the light path of the optical module and includes a light path adjusting unit 10 for adjusting the incident angle of light to the lens vertically.

  The beam trajectory adjusting unit 10 according to the second embodiment of the present invention includes a mirror holder 13, a reflector 14, and a knob 15. The mirror holder 13 has a fixed stand 131, a protective plate 132, and a fixed slot 133. The fixed stand 131 is formed at both ends of the protective plate 132 together with the fixed slot 133. The fixed stand 131 is fixed on the lens box 20 with screw holes 1311 and screws 40. Both ends of the reflector 14 are installed in a fixed slot 133, and the angle of the reflector 14 and the ray trajectory are adjusted by the knob 15.

  Regarding the assembly of the second embodiment, the reflector 14 is fixed to the fixing slot 13 of the mirror holder 13. Further, the screw 40 is passed through the screw hole 1311 to fix the structure to the lens box 20.

  The angle of the reflector 14 is adjusted by rotating the knob 15. The trajectory of the light beam is adjusted by changing the angle of the reflector 14, and after setting an appropriate angle, the reflector 14 is fixed at that angle.

  The incident light of the lens 30 is reflected by the reflector 112 and another mirror, and the light beam trajectory adjustment unit 10 adjusts the incident light so that the angle with respect to the lens 30 is vertical.

  The beam trajectory adjusting unit 10 may be installed anywhere on the trajectory of the light beam, and the incident light of the lens 30 is reflected by several mirrors other than the mirror, and the incident angle with respect to the lens 30 is reflected by the beam trajectory adjusting unit 10. Is adjusted to be vertical.

  Note that the second embodiment of the present invention can be applied to the three-axis, four-axis, and five-axis adjustment optical modules of the prior art, and another adjustment axis can be added.

  Although the embodiments of the present invention have been described above, it is possible for the engineer to derive variations other than the above embodiments without exceeding the scope of the present invention, that is, the present invention is not limited to the embodiments described above. It is not limited to.

Illustration of the triaxial adjustment optical module Explanatory drawing of the 5-axis adjustment optical module Explanatory drawing of Example 1 of this invention Explanatory drawing which showed a mode that the structure in Example 1 of this invention was installed in the lens box Another explanatory view showing a state in which the structure in Embodiment 1 of the present invention is installed in the lens box Another explanatory view showing a state in which the structure in Example 1 of the present invention is installed in the lens box Another explanatory view showing a state in which the structure according to the first embodiment of the present invention is installed in the lens box. Explanatory drawing of Example 2 of this invention Explanatory drawing which showed a mode that the structure in Example 2 of this invention was installed in the lens box

Claims (8)

A light beam trajectory adjustment structure for an optical module, wherein the light beam trajectory adjustment structure is arranged on a light beam trajectory and adjusts the light beam trajectory to adjust the incident angle of the light beam to the lens to be vertical. The light beam trajectory adjustment structure of the optical module according to claim 1, wherein the light beam activation adjusting unit is supported at both ends by two fixed stands installed on a lens box, and the angle is changed by changing the angle. A light path adjusting structure for an optical module, comprising: a swivel mirror having a reflector for adjusting a light path. 3. The light beam trajectory adjusting structure for an optical module according to claim 2, wherein the swivel mirror has a swivel member and two fixed clamps, and the reflector is installed and fixed on the swivel member by the fixed clamps. A beam trajectory adjustment structure for an optical module, wherein 3. The beam trajectory adjustment structure of an optical module according to claim 2, wherein the swivel mirror has a swivel member and a knob formed so as to protrude the fixed stand at one end of the swivel member. A light beam trajectory adjustment structure for an optical module, wherein the turning member is rotated. 3. The optical trajectory adjustment structure for an optical module according to claim 2, wherein the fixing stand has a screw hole, and is fixed to the lens box by screwing the screw hole. Module beam orbit adjustment structure. 2. The light path adjustment structure of the optical module according to claim 1, wherein the light beam activation adjusting unit includes a mirror holder installed on the lens box, a reflector installed on the mirror holder, and the mirror holder. And a knob for adjusting the ray trajectory by changing the angle of the reflector. 7. The optical path adjustment structure of an optical module according to claim 6, wherein the mirror holder has a fixed stand, a protective plate, and a fixed slot, and the fixed stands are formed at both ends of the protective plate, A light path adjusting structure of an optical module, wherein a slot is installed on the fixed stand for the reflector installation. 8. The optical module according to claim 7, wherein the fixing stand has a screw hole, and is fixed to the lens box by screwing the screw hole. Light beam trajectory adjustment structure.

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