JPH01232310A - Method of fixing optical appliance - Google Patents

Abstract

PURPOSE:To reduce cost by introducing an adhesive agent into recesses provided to the datum plane of a member to be fixed by a joining stage, then integrating the wall surface of the member to be fixed and the wall surface of an optical appliance facing the recesses by the adhesive agent. CONSTITUTION:A contact surface 21a of the optical appliance 2 is pressed to the datum plane 10 of the member 1 to be fixed. The wall surface 21b of the optical appliance 2 is thereby disposed opposite to the recesses 11 of the member 1 to be fixed. The recesses 11 of the bag shapes each having an aperture 111 are thus formed. The adhesive agent 3 is introduced into the bag-shaped recesses 11 through the apertures 111 while the optical appliance 2 is held pressed to the member 1 to be fixed. The adhesive agent 3 is thereafter cured by a heat treatment or natural curing, etc. The wall surface 110 of the member 1 to be fixed and the wall surface 21b of the optical appliance 2 facing the above-mentioned recesses 11 are thereby integrated and fixed.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a method for fixing an optical instrument.

[Prior Art] Conventionally, in order to fix the reflecting mirror of a laser beam scanning device,
Bring the contact surface of the reflector into contact with the reference surface of the member to be fixed, then lock the retainer plate springs to both ends of the reflector, and tighten the retainer plate springs and the reflector with the tightening screws. It was fixed.

[Problems to be Solved by the Invention] The conventional method for fixing an optical instrument described above requires a presser plate spring, a tightening screw, etc. for fixing and holding the reflecting mirror to the member to be fixed. For this reason, it was not possible to reduce the number of parts. Furthermore, a portion of the reflective surface of the anti-tJI mirror is sacrificed due to the presser plate springs engaged with both ends of the reflective mirror.

An object of the present invention is to provide a method for fixing an optical instrument that solves the above-mentioned conventional problems.

[Means for Solving the Problems 1] The method for fixing an optical instrument of the present invention includes abutting a contact surface of an optical instrument against the reference surface of a member to be fixed, which has a reference surface and a recess provided in the reference surface. a contact step of introducing an adhesive into the recess of the fixed member with the optical instrument in contact with the wall surface of the 51iW1 fixing member forming the recess and the wall surface of the optical instrument facing the recess; It is characterized by the following: 1) A part of the culm is integrated with a part of the culm using a hardened adhesive.

[Operation] In the abutting step of the optical instrument fixing method of the present invention, the abutting surface of the optical instrument is brought into contact with the reference surface of the member to be fixed. Then, bonding] Adhesive is introduced into the recess provided in the reference surface of the member to be fixed by the biculm, and the wall surface of the member to be fixed and the wall surface of the optical instrument facing the recess are integrally fixed with the adhesive.

[Example 1] Example 1 of the method for fixing an optical instrument of the present invention is shown in FIGS.
This will be explained using FIG.

The optical instrument fixing Ij method of this embodiment consists of a contacting process and a bonding process. : A holding member was used to hold the optical instrument 2, and a folding reflector of a laser beam device was used as the optical instrument 2.

The fixed member 1 is made of metal or synthetic resin, and includes a reference surface 10 (see FIGS. 1 and 3) with an abbreviated cross section that abuts and fixes the contact surface 21a of the optical instrument 2, and a reference surface 10 (see FIGS. 1 and 3). It has a recess 11 provided in the surface 10. The reference planes 10 are formed at three locations on the fixed portion 441 at constant intervals.

As shown in FIG. 2, the optical instrument 2 is plate-shaped and has a reflective surface 20 on the front side, and the two surfaces, the back surface and the bottom surface, serve as the contact surfaces 21a of the fixing member 1 against the reference surface 10.

As the adhesive 3, an epoxy adhesive, a thermosetting adhesive, or a similar adhesive can be used.

(Abutting process) The abutting surface 21 of the optical instrument 2 is placed on the reference surface 10 of the member to be fixed 1.
a (see Figure 3). As a result, the wall surface 21b of the optical instrument 2 faces the recess 11 of the fixed member 1 (
(See FIG. 4), whereby the recess 11 becomes bag-shaped with an opening 111. Further, in order to maintain the front joint state, temporary fixing means such as a fixing device, fixing tool, instant adhesive, etc. (not shown) can be used.

(Joining process) As shown in FIG.
will be introduced. Thereafter, the front adhesive 3 is cured by heat treatment or natural curing.

As a result, the wall surface 110 of the fixed member 1 and the recess 11
and the wall surface 21b of the optical instrument 2 facing the are integrally fixed.

The optical instrument 2 fixed to the member 1 to be fixed by the abutting process and bonding process is exposed to the irradiation means 4 and the SO8 shown in FIG.
It is used by being attached to a housing 1A of a laser beam scanning device having a split reflector SO8 light receiving element 6. Note that the irradiation means 4 includes a semiconductor laser 41, a collimator lens 42, a cylindrical lens 43, a polygon mirror 44, and a scanning lens 45. The Radhe beam R irradiated by the irradiation means 4 is reflected upward by the reflecting surface 20 of the optical instrument 2 and irradiated onto the photoreceptor 7, so that optical information is captured.

This optical information is electronically photocopied! ! ! ! After being developed by a printing process (not shown), the image is transferred and fixed onto plain paper.

In this embodiment, the optical instrument 2 is a folded back O4.
When a mirror is used, the back and lower surfaces opposite to the reflective surface 20 are used as the contact surfaces 21a, and the reference surface 1 of the fixed member 1
Since the reflection surface 20 is brought into contact with and fixed at 0, a part of the reflection surface 20 is not sacrificed. Therefore, the length of the folding reflector can be shortened.

Furthermore, in the case of this embodiment, there is no need for a presser plate spring and a tightening screw for fixing and holding the folding reflector, which were conventionally used. Therefore, the number of parts can be reduced.

[Implementation f542] FIG. 7 shows Example 2.

In this embodiment, a housing of a laser beam scanning device was used as the fixed member 1B.

Further, the fixed member 1B has a reference surface 10a having an abbreviated cross section,
It has three four parts 11a formed on the reference surface 10a. Thereby, the long optical instrument 2 can be fixed and held more reliably. Further, since the optical instrument 2 can be directly fixed and held on the housing, the number of parts can be reduced, and furthermore, the cost can be reduced.

[Example 3] Embodiment 3 is shown in FIGS. 9 and 10.

In this embodiment, a lens is used as the optical instrument 2A, and
A lens holding member attached to the housing was used as the fixed member 1C. In the case of this embodiment, the contact surface 21c of the optical instrument 2A fixed to the reference surface 10b of the fixed member 1C is set at a position that does not interfere with the operation of the lens. That is, the abutting surface 21c is formed on a portion other than the light passing surface 11 of the lens. Further, the fixed member 1C has two recesses 11b on the reference surface 10b.

Therefore, in the case of this embodiment, the wall 1Ni of the recess 11b
110b and the wall surface 2b of the optical instrument 2A are integrated with the hardened lI adhesive 3, the lens as the optical instrument 2 is
The fixed member 1 can be securely fixed without impairing its optical function.
It is held fixed at C.

L Effect] In the abutting step of the optical instrument fixing method of the present invention, the abutting surface of the optical instrument is brought into contact with the reference surface of the member to be fixed. In the bonding process, an adhesive is introduced into a recess provided in the reference surface of the member to be fixed, and the wall surface of the member to be fixed and a part of the wall surface of the optical instrument facing the four parts are integrally fixed and covered with the adhesive. Therefore, there is no need for a presser plate spring, a tightening screw, etc. for fixing and holding the optical instrument to the member to be fixed as in the conventional case. In addition, the number of parts can be reduced by this amount.
It becomes possible to reduce costs.

In addition, since the optical instrument fixed to the reference surface of the fixed member does not have a presser plate spring in contact with the optically active part for fixing the optical instrument to the fixed member as in the past, the optical action is not impaired. It never happens. Therefore, the optical action of the optical instrument can be effectively utilized. Moreover, the optical instrument and the optical device as a whole can be made more compact.

Furthermore, according to the method for fixing an optical instrument of the present invention, when the optical instrument is hardened and integrated with the member to be fixed with a #marking agent,
Since no adhesive is interposed between the reference surface of the fixed member and the contact surface of the optical instrument fixed to the reference surface, it is possible to maintain the accuracy of the optical instrument with the reference surface as a reference. Become.

[Brief explanation of the drawing]

Embodiment 1 of the present invention is shown in FIGS. 1 to 6.
FIG. 2 is a perspective view showing the main parts thereof. FIG. 3 is a cross-section taken along line A-A in FIG. 6, and shows the contact surface 2 of the optical instrument 2.
FIG. 2 is a cross-sectional view showing a state in which 1a is brought into contact with a reference surface 10 of a member to be fixed 1. FIG. 4 and 5 are cross-sectional views taken along line B-B in FIG.
FIG. 3 is a cross-sectional view showing a state in which the adhesive 3 is not introduced and a state in which the adhesive 3 is introduced into the recessed portion 11. FIG. 6 is a perspective view showing a state in which a combination of the optical instrument 2 and the fixed member 1 obtained according to the present invention is assembled into a laser beam scanning device. FIG. 7 is a perspective view showing a second embodiment of the present invention. FIG. 8 is a plan view showing an example of use of the second embodiment. 9 and 10 are perspective views showing a third embodiment of the present invention. 1... Fixed member 10... Reference plane 11.11
a, 11b...Four parts 110.110b, 110c...Wall surface 2.2A...
Optical instruments 21a, 21C...Abutting surfaces 21b, 21d...Wall surface 3...Adhesive

Claims (1)

[Claims] (1) A contacting step of bringing the abutment surface of the optical instrument into contact with the reference surface of the fixed member having a reference surface and a recess provided in the reference surface; A bonding step of introducing an adhesive into the recess of the member to be fixed, and integrating the wall surface of the member forming the recess and a part of the wall surface of the optical instrument facing the recess with the hardened adhesive. , and more.