JPH05313052A - Optical image recording device - Google Patents

Abstract

PURPOSE:To provide an optical image recording device improved in fitting work performance by simplifying mechanism for holding an optical lens. CONSTITUTION:In an optical image recording device using an optical system provided with at least one optical lens, a lens 10 formed of material moldable into various shape and provided with an integrally molded protruding part 10a is provided as an optical lens and fixed to the fixing parts 7a, 7b of a housing 6 by heat-caulking utilizing the protruding part 10a. Since the lens 10 is thus fixed to the housing 6 by heat-caulking utilizing the protruding part 10a, constitution can be simplified, and the number of part items required for fitting can be reduced considerably so as to simplify fitting-fixing work.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical image recording apparatus such as a camera, a laser printer, a facsimile, a copying machine and a digital copying machine, and more particularly to an optical image recording method characterized by fixing an optical lens to a housing. Recording device

[0002]

2. Description of the Related Art In an optical image recording apparatus such as a laser printer, various kinds of optical lenses are arranged. Conventionally, a mechanism for fixing this type of optical lens at a predetermined position is complicated and the number of parts is large. 16 (a),
(b) is a diagram showing a fixing mechanism of the cylindrical lens 1 in the conventional optical image recording apparatus. In the lens frame 2,
As shown in FIGS. 16 (a) and 16 (b), a recess having a step and a hole are provided, and after the cylindrical lens 1 is fitted into this recess, both sides are pressed by the rubber pressers 3a and 3b, and From the holding metal fitting 4, attach the cylindrical lens 1 to the lens frame 2
It is designed to be fixed to. The fixing is performed with the set screw 5.

[0003]

As shown in FIGS. 16 (a) and 16 (b), in the case of the conventional device, the fixing mechanism of the optical lens is complicated and the number of parts is large. Therefore, if such a configuration is provided for all the optical lenses, there is a problem in that the optical system alone becomes considerably complicated and the mounting work requires a considerable number of man-hours. Further, there is an example in which a plastic lens integrally formed with a mounting portion is used and a hole is formed in the mounting portion and screwed (Japanese Patent Laid-Open No. 61-149912). However, also in this case, since fixing is performed by screwing, a considerable number of steps are required for the mounting work. There is also an example in which a projection or a recess is provided at substantially the optical axis position of the optical element in the scanning direction, and the projection or recess is held by the projection or the recess (JP-A-62-47010).
In this example, it is only described that the projection and the recess are fitted, and the positioning accuracy is not described. The present invention has been made in view of the above circumstances, and an object thereof is to realize an optical image recording apparatus in which a mechanism for holding an optical lens is simplified and workability of mounting is improved. ..

[0004]

To achieve the above object, the invention of claim 1 is an optical image recording apparatus using an optical system having at least one optical lens, wherein the optical lens has various shapes. It is characterized in that it is provided with a lens integrally formed with a protrusion using a moldable material, and that the protrusion is used to fix the lens to the housing by heat staking.

According to a second aspect of the present invention, in an optical image recording apparatus using an optical system having at least one optical lens, a material that can be molded into various shapes is used as the optical lens, and the protrusion is integrally molded. It is characterized in that the lens is provided, and the protruding portion thereof serves both as a fixing reference to the housing by heat staking and a positioning reference.

According to a third aspect of the present invention, in the optical image recording apparatus according to the first or second aspect, the material of the protruding portion of the lens and the housing in contact with the protruding portion is the same.

According to a fourth aspect of the present invention, in an optical image recording apparatus using an optical system having at least one optical lens, a material that can be molded into various shapes is used as the optical lens, and the optical lens is fitted into the recess of the housing. A lens integrally formed with a positioning reference protrusion for inserting the lens is provided, and at least one fixing protrusion is provided on a surface other than the reference surface of the positioning reference protrusion of the lens. Also,
According to a fifth aspect of the invention, in the optical image recording apparatus according to the fourth aspect, at least one fixing protrusion is provided on the surface of the positioning reference protrusion that faces the reference surface.

According to a sixth aspect of the present invention, in an optical image recording apparatus using an optical system having at least one optical lens, a material that can be molded into various shapes is used as the optical lens, and the optical lens is fitted into the recess of the housing. A lens integrally formed with a positioning reference protrusion for inserting the lens is provided, and at least one fixing recess is provided on a surface other than the reference surface of the positioning reference protrusion of the lens. Also,
According to a seventh aspect of the present invention, in the optical image recording apparatus according to the sixth aspect, at least one fixing recess is provided particularly on a surface of the positioning reference protrusion that faces the reference surface.

According to an eighth aspect of the present invention, in an optical image recording apparatus using an optical system having at least one optical lens, a material that can be molded into various shapes is used as the optical lens, and the optical lens is fitted into the recess of the housing. A lens integrally formed with a positioning reference projection for inserting the lens, and having at least one fixing projection on a surface other than the reference surface of the recess of the housing corresponding to the positioning reference projection of the lens. To do. According to a ninth aspect of the invention, in the optical image recording apparatus according to the eighth aspect, at least one fixing protrusion is provided on a surface of the concave portion of the housing corresponding to the positioning reference protrusion portion, the surface facing the reference surface. It is characterized by

According to a tenth aspect of the present invention, in an optical image recording apparatus using an optical system having at least one optical lens, a material that can be molded into various shapes is used as the optical lens, and the optical lens is fitted into the recess of the housing. The lens is characterized in that it includes a lens integrally formed with a positioning reference protrusion for inserting the lens, and a surface of the lens other than the reference surface of the positioning reference protrusion has a spring structure. The invention of claim 11 is
An optical image recording apparatus according to a tenth aspect of the invention is characterized in that the surface of the positioning reference protrusion that faces the reference surface has a spring structure.

According to a twelfth aspect of the present invention, in an optical image recording apparatus using an optical system having at least one optical lens, a material that can be molded into various shapes is used as the optical lens, and the optical lens is fitted into the recess of the housing. It is characterized in that it is provided with a lens integrally formed with a positioning reference projection for inserting, and a surface other than the reference surface of the recess of the housing corresponding to the positioning reference projection of the lens has a spring structure. According to a thirteenth aspect of the present invention, in the optical image recording apparatus according to the twelfth aspect, the surface facing the reference surface of the recess of the housing corresponding to the positioning reference projection has a spring structure. To do.

According to a fourteenth aspect of the present invention, in an optical image recording apparatus using an optical system having at least one optical lens, a material that can be molded into various shapes is used as the optical lens, and a housing fixing member is used. Equipped with a lens integrally molded with a positioning reference projection for fitting into
Two or more reference projections for positioning the lens are provided with a minute gap therebetween.

[0013]

In the optical image recording apparatus of the present invention, a material that can be molded into various shapes is used as the optical lens, and the projection or the reference projection for positioning to be fitted into the fixed portion or the recess of the housing is used. Equipped with an integrally molded lens, the protrusions or the positioning reference protrusions are used to fix and position on the housing, and the number of parts required for mounting can be greatly reduced. Matching can be simplified.

[0014]

1 is a perspective view showing a schematic structure of an optical lens portion of an optical image recording apparatus showing an embodiment of the invention described in claims 1 and 3, and FIG. 2 shows the optical lens portion of FIG. It is a top view when it sees from an optical axis direction. The illustrated embodiment shows an improved example of the fθ lens used in the optical scanning optical system of a laser printer. In FIGS. 1 and 2, 6 is a housing, and 10 is an fθ lens integrally formed with a protrusion 10a using a material that can be molded into various shapes. Hound 6
Has a groove formed by the fixing members 7a and 7b, and the protrusion 10a of the fθ lens 10 is set so as to enter the groove. At this time, if the bottom surface of the fθ lens 10 is brought into contact with the reference surfaces 9a and 9b of the positioning members 8a and 8b provided on the housing 6 side, positioning in the optical axis direction can be performed. Then, heat is applied to a portion where the protruding portion 10a and the fixing members 7a and 7b are in contact with each other, and the protruding portion 10 is subjected to thermal caulking.
Fix a to the housing 6.

By the way, since the fθ lens 10 is a moldable material, it deforms due to environmental changes, so there is a possibility that it will be unfixed by heat staking. Therefore, in the present invention, the protrusion 10a of the lens 10 and the protrusion 10a
The materials of the fixing members 7a and 7b of the housing that come into contact with are the same. That is, if the protrusion 10a and the fixing members 7a and 7b on the housing 6 side are made of the same material having the same coefficient of thermal expansion, the deformation due to the environmental change causes a difference between the protrusion 10a and the fixing members 7a and 7b. Since it is not present, it is possible to prevent the heat staking from coming off.

Next, FIG. 3 is a perspective view showing a schematic structure of an optical lens portion of an optical image recording apparatus showing an embodiment of the invention described in claims 2 and 3, and FIG. 4 is an optical lens of FIG. It is a top view when a part is seen from the optical axis direction. The illustrated embodiment is fθ used in an optical scanning optical system of a laser printer or the like.
An improved example of the lens is shown. In FIGS. 3 and 4, 11
Is a housing, and 14 is a fθ in which the positioning reference protrusion 14a is integrally molded using a material that can be molded into various shapes.
It is a lens. In the illustrated embodiment, the housing 11
In addition, a U-shaped positioning fixing member 12 is provided on the reference surface 1
2a is formed so that the reference projection 15a for positioning enters the groove while the reference surface 15 of the reference projection 14a for positioning on the lens side is in contact with the reference surface 12a of the positioning fixing member 12 on the housing side. , And lens 1
4 has a bottom surface provided on the housing 11 side.
Set as shown in 3b. Then, heat is applied to a portion where the positioning reference protrusion 14a and the positioning fixing member 12 are in contact with each other other than the reference surface, and the positioning reference protrusion 14a is fixed to the positioning fixing member 12 of the housing 11 by thermal caulking. This enables positioning and fixing in the optical axis direction at the same time.

By the way, also in this embodiment, since the fθ lens 14 is made of a moldable material and is deformed due to environmental changes, there is a possibility that the fixing due to heat staking will be released. Therefore, in the present invention, the positioning reference protrusion 14a of the lens 14 and the positioning fixing member 12 of the housing 11 that contacts the positioning reference protrusion 14a are made of the same material. That is, if the positioning reference protrusion 14a and the positioning fixing member 12 on the housing 11 side are made of the same material having the same coefficient of thermal expansion, the positioning reference protrusion 14a and the positioning fixing member 1 will be deformed due to environmental changes.
Since there is no difference between 2 and 2, it is possible to prevent thermal caulking from coming off.

Next, FIG. 5 is a perspective view showing a schematic construction of an optical lens portion of an optical image recording apparatus showing an embodiment of the invention as defined in claim 4. The illustrated embodiment shows an improved example of the fθ lens used in the optical scanning optical system of a laser printer. In FIG. 5, reference numeral 26 is a housing, and 27 is an fθ lens integrally formed with a positioning reference projection 27a using a material that can be molded into various shapes. In the embodiment shown in the drawing, the positioning reference projection 27a of the lens 27 is used.
At least one fixing projection 29 on a surface other than the reference surface of
a and 29b, the positioning reference protrusions 27a on the lens 27 side are fitted into the holes (recesses) 26a of the housing 26 so that the surfaces 28b and 28c of the positioning reference protrusions 27a are attached. The fixing protrusions 29a and 29b are pressed against the surface of the hole 26a, and the lens 27 is fixed to the housing 26. At this time, the positioning reference protrusion 27a, which is a hidden surface in the drawing,
28a is a reference surface, and if the reference surface 28a is fixed while contacting it, the lens 27 can be positioned and fixed in the optical axis direction at the same time.

Next, FIG. 6 is a perspective view showing a schematic construction of an optical lens portion of an optical image recording apparatus showing an embodiment of the invention as defined in claim 5. The illustrated embodiment shows an improved example of the fθ lens used in the optical scanning optical system of a laser printer. In FIG. 6, reference numeral 30 is a housing, and 31 is an fθ lens in which a positioning reference protrusion 31a is integrally molded using a material that can be molded into various shapes. In the embodiment shown in the figure, the reference projection 31a for positioning the lens 31 is provided.
Of the lens 31 is characterized by having at least one fixing projection 33 on a surface 32b facing the reference surface 32a of
By fitting the positioning reference protrusion 31a of FIG. 3 into the hole (recess) 30a of the housing 30, the positioning reference protrusion 31a, which is a hidden surface in the drawing, is attached to the facing surface 32b of the reference surface 32a. The fixing projection 33 is pressed against the surface of the hole 30 a, and the lens 31 is fixed to the housing 30. At this time, the lens 27 is automatically positioned and fixed in the optical axis direction at the same time.

Next, FIG. 7 is a perspective view showing a schematic construction of an optical lens portion of an optical image recording apparatus showing an embodiment of the invention described in claim 6. The illustrated embodiment shows an improved example of the fθ lens used in the optical scanning optical system of a laser printer. In FIG. 7, reference numeral 44 is a housing, and 47 is an fθ lens integrally formed with a positioning reference projection 47a using a material that can be molded into various shapes. In the illustrated embodiment, the positioning reference projection 47a of the lens 47 is used.
At least one fixing recess 49 on a surface other than the reference surface of
a and 49b, the positioning reference projection 47a on the lens 47 side is fitted into the hole (recess) 44a of the housing 44 to attach to the surfaces 48b and 48c of the positioning reference projection 47a. The fixing recesses 49a and 49b are pressed against the fixing protrusions 46a and 46b provided on the surfaces 45a and 45b of the hole 44a, so that the lens 47 is fixed to the housing 44. At this time, the reference projection 47a for positioning, which is a hidden surface in the drawing,
Surface 48a is a reference surface, and if the reference surface 48a is fixed while being in contact with it, the lens 27 can be positioned and fixed in the optical axis direction at the same time.

Next, FIG. 8 is a perspective view showing a schematic structure of an optical lens portion of an optical image recording apparatus showing an embodiment of the invention as defined in claim 7. The illustrated embodiment shows an improved example of the fθ lens used in the optical scanning optical system of a laser printer. In FIG. 8, 50 is a housing, and 53 is an fθ lens integrally formed with a positioning reference projection 53a using a material that can be molded into various shapes. In the embodiment shown in the drawing, the reference projection 53a for positioning the lens 53 is provided.
Of the lens 53 is characterized by having at least one fixing recess 55 on a surface 54b facing the reference surface 54a of
By fitting the positioning reference projecting portion 53a of FIG. 2 into the hole (recess) 50a of the housing 50, the positioning reference projecting portion 53a, which is a hidden surface in the drawing, is attached to the facing surface 54b of the reference surface 54a. The fixing recess 55 is pressed against the fixing protrusion 52 attached to the surface of the hole 50a, and the lens 53 is fixed to the housing 50. At this time, the lens 53 is automatically positioned and fixed in the optical axis direction at the same time.

Next, FIG. 9 is a perspective view showing a schematic construction of an optical lens portion of an optical image recording apparatus showing an embodiment of the invention as defined in claim 8. The illustrated embodiment shows an improved example of the fθ lens used in the optical scanning optical system of a laser printer. In FIG. 9, reference numeral 56 is a housing, and 59 is an fθ lens integrally formed with a positioning reference protrusion 59a using a material that can be molded into various shapes. In the illustrated embodiment, the reference projection 59a for positioning the lens 59 is provided.
At least one fixing projection 58a, 5 on the surface other than the reference surface of the hole (recess) 56a of the housing 56 corresponding to
8b, the positioning reference projection 59a on the lens 59 side is provided with a hole (recess) 5 of the housing 56.
6a, the surface 57a of the hole 56a,
The fixing projections 58a and 58b attached to 57b are pressed against the surfaces 60b and 60c of the positioning reference projection portion 59a, and the lens 59 is fixed to the housing 56. At this time, the surface 60a of the positioning reference protrusion 59a, which is a hidden surface in the drawing, is the reference surface, and the reference surface 60
By fixing a while contacting a, the lens 59 can be positioned and fixed in the optical axis direction at the same time.

Next, FIG. 10 is a perspective view showing a schematic construction of an optical lens portion of an optical image recording apparatus showing an embodiment of the invention as defined in claim 9. The illustrated embodiment shows an improved example of the fθ lens used in the optical scanning optical system of a laser printer. In FIG. 10, 61 is a housing, 64
Is an fθ lens in which the positioning reference protrusion 64a is integrally molded using materials that can be molded into various shapes. In the embodiment shown in the figure, the reference projection 6 for positioning the lens 64 is provided.
4a, at least one fixing projection 6 is provided on the surface of the hole (recess) 61a of the housing 61 facing the reference surface.
3, the positioning reference projection 64a on the lens 64 side is fitted into the hole 61a of the housing 61 to form a hidden surface in the drawing, which is a reference surface of the positioning reference projection 64a. 65a facing surface 65b
Fixing projection 6 attached to the surface 62 of the hole 61a
3 is pressed against the facing surface 65b of the positioning reference protrusion 64a, and the lens 64 is fixed to the housing 61. At this time, the lens 64 is automatically positioned and fixed in the optical axis direction at the same time.

Next, FIG. 11 is a perspective view showing a schematic construction of an optical lens portion of an optical image recording apparatus showing an embodiment of the invention as defined in claim 10. The illustrated embodiment shows an improved example of the fθ lens used in the optical scanning optical system of a laser printer. In FIG. 11, 66 is a housing, 6
Reference numeral 8 is an fθ lens in which the positioning reference protrusion 68a is integrally molded using materials that can be molded into various shapes. The embodiment shown in the figure is characterized in that the surface 70 other than the reference surface 69a of the positioning reference projection 68a of the lens 68 has a spring structure, and the positioning reference projection 68a on the lens 68 side is formed in the hole of the housing 66. The surface 70 of the positioning reference protrusion 68a is fitted into the portion (recess) 66a.
Has a fixing spring structure, the lens 68 is pressed against the surface 67 of the hole 66a and the lens 68 is fixed to the housing 66. At this time, the surface 69a of the positioning reference projection 68a, which is a hidden surface in the drawing, is the reference surface. If the reference surface 69a is fixed while being in contact with it, the lens 68 is positioned and fixed in the optical axis direction. Are possible at the same time.

Next, FIG. 12 is a perspective view showing a schematic construction of an optical lens portion of an optical image recording apparatus showing an embodiment of the invention described in claim 11. The illustrated embodiment shows an improved example of the fθ lens used in the optical scanning optical system of a laser printer. In FIG. 12, 71 is a housing, and 7
Reference numeral 3 denotes an fθ lens in which the positioning reference protrusion 73a is integrally molded using materials that can be molded into various shapes. The embodiment shown in the figure is characterized in that the surface 75 of the positioning reference projection 73a of the lens 73 facing the reference surface 74a has a spring structure, and the positioning reference projection 73a on the lens 73 side is fixed to the housing 71. By being fitted into the hole (concave portion) 71a, it is a hidden surface in the drawing, and is a surface 75 facing the reference surface 74a of the positioning reference projection 73a.
Has a fixing spring structure, so that the lens 73 is fixed to the housing 71 by being pressed against the surface 72 of the hole 71a. At this time, the lens 73 is automatically positioned and fixed in the optical axis direction at the same time.

Next, FIG. 13 is a perspective view showing a schematic structure of an optical lens portion of an optical image recording apparatus showing an embodiment of the invention as defined in claim 12. The illustrated embodiment shows an improved example of the fθ lens used in the optical scanning optical system of a laser printer. In FIG. 13, 76 is a housing, 7
Reference numeral 8 is an fθ lens in which the positioning reference protrusion 78a is integrally molded using materials that can be molded into various shapes. In the illustrated embodiment, the hole portion (recess) 76a of the housing 76 corresponding to the positioning reference protrusion 78a of the lens 78 is provided.
The surface 77 other than the reference surface has a spring structure. By fitting the positioning reference projection 78a on the lens 78 side into the hole 76a of the housing 76, the surface 77 of the hole 76a is fixed. Because of the spring structure, the lens 78 is fixed to the housing 76 by being pressed against the surface 79b of the positioning reference protrusion 78a. At this time, if the reference surface 79a of the positioning reference projection 78a, which is the reference surface and is a hidden surface in the drawing, is fixed while contacting it, the lens 78 can be positioned and fixed in the optical axis direction at the same time. It will be possible. If a claw-shaped projection is provided on the surface 79b of the positioning reference projection 78a that is pressed against the spring-structured surface 77 of the hole 76a of the housing 76, the projection and the housing side The lens 78 is more securely fixed by the engagement with the spring portion.

Next, FIG. 14 is a perspective view showing a schematic construction of an optical lens portion of an optical image recording apparatus showing an embodiment of the invention as defined in claim 13. The illustrated embodiment shows an improved example of the fθ lens used in the optical scanning optical system of a laser printer. In FIG. 14, 80 is a housing, and 8
Reference numeral 2 is an fθ lens integrally formed with a positioning reference projection 82a using materials that can be molded into various shapes. In the embodiment shown in the drawings, the hole (recess) 80a of the housing 80 corresponding to the positioning reference projection 82a of the lens 82 is provided.
The surface 81 opposite to the reference surface has a spring structure, and by fitting the positioning reference projection 82a on the lens 82 side into the hole 80a of the housing 80,
The reference projection 8 for positioning, which is a hidden surface in the figure
The hole 80a for the facing surface 83b of the reference surface 83a of 2a
Since the surface 81 has a fixing spring structure, it is pressed against the facing surface 83b of the positioning reference projection 82a,
The lens 82 is fixed to the housing 80. At this time, the lens 82 is automatically positioned and fixed in the optical axis direction at the same time. If a claw-shaped projection is provided on the facing surface 83b of the reference surface 83a of the positioning reference projection 82a that is pressed against the spring-shaped surface 81 of the hole 80a of the housing 80, as shown in FIG. The engagement of the projection and the spring portion on the housing side ensures more secure fixing of the lens 82.

Next, FIG. 15 is a perspective view showing a schematic structure of an optical lens portion of an optical image recording apparatus showing an embodiment of the invention as defined in claim 14. The illustrated embodiment shows an improved example of the fθ lens used in the optical scanning optical system of a laser printer. In FIG. 15, reference numeral 84 denotes a housing, 8
Reference numeral 6 is an fθ lens in which the positioning reference projection 86a is integrally molded using materials that can be molded into various shapes. The embodiment shown in the figure is characterized in that two or more positioning reference projections 86a for positioning the lens 86 are provided with a minute gap therebetween, and the positioning reference projections 86a on the lens 86 side are provided.
By fitting the fixing member 84a of the housing 84 into the gap, the reference surface 87 of the positioning reference protrusion 86a is pressed against the surface 85 of the fixing member 84, and the lens 86 is fixed to the housing 84. At this time, the lens 86 is automatically positioned and fixed in the optical axis direction at the same time.

[0029]

As described above, in the optical image recording apparatus according to the first aspect of the present invention, the optical lens is made of a material that can be molded into various shapes, and is provided with a lens integrally formed with a protrusion. Since it is characterized in that it is fixed to the housing by heat caulking using the part, the configuration can be simplified, the number of parts required for mounting can be greatly reduced, and the mounting and fixing work can be simplified.

In the optical image recording apparatus of the second aspect, the optical lens is made of a material that can be molded into various shapes, and is provided with a lens integrally formed with a protrusion, and the protrusion is heat caulked into the housing. Since it is also used as a fixing reference and a positioning reference, the configuration can be simplified, the number of parts required for mounting can be significantly reduced, and the reference positioning and the mounting and fixing work can be performed at the same time.

In the optical image recording apparatus of the third aspect, since the projection of the lens and the housing in contact with the projection are made of the same material, the structure can be simplified and the number of parts required for mounting can be reduced. The structure can be greatly reduced, the mounting and fixing work can be simplified, and the structure is resistant to environmental changes.

In the optical image recording apparatus of the fourth aspect, the optical lens is made of a material that can be molded into various shapes, and is provided with a lens integrally formed with a positioning reference projection for fitting into the recess of the housing. Since the lens has at least one fixing projection on a surface other than the reference surface of the positioning reference projection of the lens, the configuration can be simplified and the number of parts required for the installation can be significantly reduced. The fixing work can be simplified. Further, in the optical image recording apparatus of claim 5, since at least one fixing projection is provided on the surface of the positioning reference projection that faces the reference surface, the configuration can be simplified. The number of parts required for mounting can be drastically reduced, and reference positioning and mounting and fixing work can be performed simultaneously.

In the optical image recording apparatus of the sixth aspect, the optical lens is made of a material that can be molded into various shapes, and is provided with a lens integrally formed with a positioning reference projection for fitting into the recess of the housing. Since the lens has at least one fixing recess on the surface other than the reference surface of the positioning reference protrusion of the lens, the configuration can be simplified, and the number of parts required for mounting can be significantly reduced. The fixing work can be simplified. Further, in the optical image recording apparatus according to claim 7, since the surface facing the reference surface of the positioning reference protrusion has at least one fixing recess, the structure can be simplified. The number of parts required for mounting can be drastically reduced, and reference positioning and mounting and fixing work can be performed simultaneously.

In the optical image recording apparatus of the eighth aspect, the optical lens is made of a material that can be molded into various shapes, and is provided with a lens integrally formed with a positioning reference projection for fitting into the recess of the housing. Since the housing has at least one fixing projection on a surface other than the reference surface of the recess of the housing corresponding to the positioning reference projection of the lens, the configuration can be simplified and the number of parts required for mounting can be reduced. Significantly reduced, and mounting and fixing work can be simplified. Further, in the optical image recording device of claim 9,
In particular, since at least one fixing protrusion is provided on the surface of the concave portion of the housing facing the reference surface of the positioning reference protruding portion, the structure can be simplified and the number of parts required for mounting can be significantly increased. The number can be reduced, and the reference position adjustment and mounting and fixing work can be performed simultaneously.

In the optical image recording apparatus of the tenth aspect, the optical lens is made of a material that can be molded into various shapes, and is provided with a lens integrally formed with a positioning reference protrusion for fitting into the recess of the housing. Since the surface other than the reference surface of the positioning reference projection of the lens has a spring structure, the structure can be simplified, the number of parts required for mounting can be significantly reduced, and the mounting and fixing work can be simplified. Can be converted. Further, in the optical image recording apparatus of claim 11, the surface facing the reference surface of the positioning reference projection has a spring structure, so that the structure can be simplified and the number of parts required for mounting can be increased. Can be significantly reduced, and reference position alignment and mounting and fixing work can be performed at the same time.

In the optical image recording apparatus according to the twelfth aspect of the present invention, the optical lens is made of a material that can be molded into various shapes, and is provided with a lens integrally formed with a positioning reference projection for fitting into the recess of the housing. Since the surface other than the reference surface of the recess of the housing corresponding to the reference projection for positioning the lens has a spring structure, the configuration can be simplified and the number of parts required for mounting can be significantly reduced. The installation and fixing work can be simplified. Further, in the optical image recording apparatus according to claim 13, since the surface facing the reference surface of the recess of the housing corresponding to the positioning reference projection has a spring structure, the configuration is simplified. In addition, the number of parts required for mounting can be significantly reduced, and the reference position alignment and mounting and fixing work can be performed at the same time.

In the optical image recording apparatus of the fourteenth aspect, as the optical lens, a material that can be molded into various shapes is used, and a positioning reference projection for fitting into a fixing member of the housing is integrally molded. A lens, and positioning reference projections of the lens, with a small gap,
Since two or more are provided, the structure can be simplified, the number of parts required for mounting can be significantly reduced, and reference positioning and mounting and fixing work can be performed at the same time.

[Brief description of drawings]

FIG. 1 is a perspective view showing a schematic configuration of an optical lens unit of an optical image recording apparatus showing an embodiment of the invention described in claims 1 and 3.

FIG. 2 is a plan view of the optical lens unit of FIG. 1 when viewed from the optical axis direction.

FIG. 3 is a perspective view showing a schematic configuration of an optical lens portion of an optical image recording apparatus showing an embodiment of the inventions as defined in claims 2 and 3.

FIG. 4 is a plan view of the optical lens unit of FIG. 3 when viewed from the optical axis direction.

FIG. 5 is a perspective view showing a schematic configuration of an optical lens unit of an optical image recording apparatus showing an embodiment of the invention as set forth in claim 4.

FIG. 6 is a perspective view showing a schematic configuration of an optical lens portion of an optical image recording apparatus showing an embodiment of the invention as claimed in claim 5;

FIG. 7 is a perspective view showing a schematic configuration of an optical lens section of an optical image recording apparatus showing an embodiment of the invention as set forth in claim 6;

FIG. 8 is a perspective view showing a schematic configuration of an optical lens unit of an optical image recording apparatus showing an embodiment of the invention as set forth in claim 7.

FIG. 9 is a perspective view showing a schematic configuration of an optical lens unit of an optical image recording apparatus showing an embodiment of the invention as set forth in claim 8.

FIG. 10 is a perspective view showing a schematic configuration of an optical lens unit of an optical image recording apparatus showing an embodiment of the invention as set forth in claim 9.

FIG. 11 is a perspective view showing a schematic configuration of an optical lens unit of an optical image recording apparatus showing an embodiment of the invention as set forth in claim 10.

FIG. 12 is a perspective view showing a schematic configuration of an optical lens unit of an optical image recording apparatus showing an embodiment of the invention as set forth in claim 11.

FIG. 13 is a perspective view showing a schematic configuration of an optical lens unit of an optical image recording apparatus showing an embodiment of the invention as set forth in claim 12.

FIG. 14 is a perspective view showing a schematic configuration of an optical lens portion of an optical image recording apparatus showing an embodiment of the invention as set forth in claim 13.

FIG. 15 is a perspective view showing a schematic configuration of an optical lens section of an optical image recording apparatus showing an embodiment of the invention as set forth in claim 14;

16A and 16B are views showing a fixing mechanism of an optical lens in a conventional optical image recording apparatus, FIG. 16A is an exploded perspective view of an optical lens portion, and FIG. 16B is a sectional view of the optical lens portion.

[Explanation of symbols]

6,11,26,30,44,50,56,61,6
6, 71, 76, 80, 84 ... Housing 7a, 7b ... Housing-side fixing member 8a, 8b ... Housing-side positioning member 9a, 9b, 12a ... Housing-side reference surface 10, 14, 27, 31, 47, 53, 59, 64, 6
8, 73, 78, 82, 86 ... Optical lens 10a ... Projection portion 12 ... Housing side positioning and fixing member 13a, 13b ... Housing side stand 14a, 27a, 31a, 47a, 53a, 59a, 6
4a, 68a, 73a, 78a, 82a, 86a ...
Positioning reference protrusions 15, 28a, 32a, 48a, 54a, 60a, 65
a, 69a, 74a, 79a, 83a, 87 ... Reference surface of positioning reference protrusion 26a, 30a, 44a, 50a, 56a, 61a, 6
6a, 71a, 76a, 80a ... Holes (recesses) in the housing 29a, 29b, 33 ... Fixing protrusions for positioning reference protrusions 49a, 49b, 55 ... For fixing positioning reference protrusions Recesses 58a, 58b, 63 ... Fixing projections for housing recesses 70, 75 ... Spring structure surface of positioning reference projections 77, 81 ... Spring structure surface of housing recesses 84a ... Housing side fixing Parts

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takashi Mama 1-3-6 Nakamagome, Ota-ku, Tokyo, Ricoh Co., Ltd. (72) Inventor Takeshi Yamakawa 1-3-6 Nakamagome, Ota-ku, Tokyo・ Inside Ricoh Co., Ltd.

Claims (14)

[Claims] 1. An optical image recording apparatus using an optical system having at least one optical lens, wherein the optical lens is made of a material that can be molded into various shapes, and is provided with a lens integrally formed with a protrusion. Utilizing the protrusion,
An optical image recording device characterized by being fixed to a housing by heat staking. 2. An optical image recording apparatus using an optical system having at least one optical lens, wherein the optical lens is made of a material that can be molded into various shapes, and has a lens integrally molded with a protrusion. An optical image recording apparatus characterized in that the projection is used both as a fixing reference to a housing by heat staking and as a positioning reference. 3. The optical image recording apparatus according to claim 1 or 2, wherein the projection of the lens and the housing in contact with the projection are made of the same material. 4. An optical image recording apparatus using an optical system having at least one optical lens, wherein a material that can be molded into various shapes is used as the optical lens, and is used for positioning to be fitted into a recess of a housing. An optical image recording apparatus comprising a lens integrally formed with a reference protrusion, and having at least one fixing protrusion on a surface other than the reference surface of the positioning reference protrusion of the lens. 5. The optical image recording apparatus according to claim 4, wherein at least one fixing projection is provided on a surface of the positioning reference projection that faces the reference surface. .. 6. An optical image recording apparatus using an optical system having at least one optical lens, wherein a material that can be molded into various shapes is used as the optical lens, and the optical lens is used for positioning to be fitted in a recess of a housing. An optical image recording apparatus comprising a lens integrally formed with a reference protrusion, and at least one fixing recess on a surface other than the reference surface of the positioning reference protrusion of the lens. 7. The optical image recording apparatus according to claim 6, wherein at least one fixing recess is provided on a surface of the positioning reference projection that faces the reference surface. .. 8. An optical image recording apparatus using an optical system having at least one optical lens, wherein a material that can be molded into various shapes is used as the optical lens, and is used for positioning to be fitted into a recess of a housing. A reference projection is integrally formed on the lens, and the surface other than the reference surface of the concave portion of the housing corresponding to the positioning reference projection of the lens,
An optical image recording device having at least one fixing projection. 9. The optical image recording apparatus according to claim 8, wherein at least one fixing projection is provided on a surface of the concave portion of the housing corresponding to the positioning reference projection, the surface facing the reference surface. Optical image recording device. 10. An optical image recording apparatus using an optical system having at least one optical lens, wherein a material that can be molded into various shapes is used as the optical lens, and the optical lens is used for positioning in a recess of a housing. An optical image recording device comprising a lens integrally formed with a reference protrusion, and a surface other than the reference surface of the positioning reference protrusion of the lens has a spring structure. 11. The optical image recording apparatus according to claim 10, wherein the surface of the positioning reference protrusion facing the reference surface has a spring structure. 12. An optical image recording apparatus using an optical system having at least one optical lens, wherein a material that can be molded into various shapes is used as the optical lens, and the optical lens is used for positioning in a recess of a housing. An optical image recording device comprising a lens integrally formed with a reference protrusion, and a surface of the recess corresponding to the positioning reference protrusion of the lens other than the reference surface has a spring structure. 13. An optical image recording apparatus according to claim 12, wherein a surface of the concave portion of the housing corresponding to the positioning reference protrusion has a spring structure, the surface facing the reference surface. Recording device. 14. An optical image recording apparatus using an optical system having at least one optical lens, wherein a material that can be molded into various shapes is used as the optical lens, and the material is fitted into a fixing member of a housing. An optical image recording apparatus comprising a lens integrally formed with a positioning reference protrusion, and two or more positioning reference protrusions of the lens are provided with a minute gap therebetween.