JP2827596B2 - Optical components - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical component having a light reflecting surface formed on a surface thereof, such as a reflecting mirror or a cylindrical mirror for a laser printer, and more particularly, to a light reflecting surface formed on the surface. The present invention relates to an optical component having a structure in which a low-rigidity light reflecting member made of a low-rigidity material is supported by a high-rigidity high-rigidity supporting member.

[0002]

2. Description of the Related Art Conventionally, when a low-rigidity light-reflecting member having a light-reflecting surface formed on its surface and made of a low-rigidity material (for example, a plastic material) is fixed to a high-rigidity, high-rigidity supporting member, a screw is used. In order to prevent the occurrence of distortion due to a clamping force of a spring or the like, a method of fixing a low-rigidity light reflecting member to the surface of a high-rigidity supporting member by bonding or the like has been performed.

[0003]

In the method of fixing the back surface of a low-rigidity light reflecting member such as the conventional plastic optical component and the surface of a high-rigidity supporting member, the low-rigidity light reflecting member has a high rigidity. Since the supporting member is deformed according to the shape of the reflecting member supporting surface, the entire reflecting member supporting surface must be finished to a planar shape with high accuracy. In this case, the processing time is long, the cost is high, and the low-rigidity light reflecting member is distorted by a temperature change during actual use due to a difference in linear expansion coefficient between the low-rigidity light reflecting member and the high-rigidity supporting member. was there. The present invention has a structure in which the surface of the high-rigidity supporting member that supports the low-rigidity light-reflecting member can be formed into a highly accurate planar shape by a simple processing method with high mass productivity, and the high-rigidity supporting member is formed. An object of the present invention is to prevent the low-rigidity light reflecting member supported by the above from being deformed even by a temperature change in actual use.

[0004]

Next, the present invention devised to solve the above-mentioned problems will be described. Elements of the present invention are used to facilitate correspondence with elements of the embodiments described later. , The reference numerals of the elements in the embodiments are enclosed in parentheses. The reason for describing the present invention in correspondence with the reference numerals of the embodiments described below is to facilitate understanding of the present invention,
It is not to limit the scope of the invention to the examples. In order to solve the above problems, an optical component (K) according to the first invention of the present application is provided.
A high-rigidity light-reflecting member (4) having a light-reflecting surface (6) provided on the surface thereof; and a high-reflection member-supporting surface (2) for fixing a back surface of the low-rigidity light-reflecting member (4). In the optical component (K) including the rigid support member (1), a plurality of protrusions (2a) are provided on the back surface of the low-rigidity light reflection member (4) or on one surface of the reflection member support surface (2). Are formed, and the surfaces (2b) of the plurality of protrusions (2a) are respectively arranged in the same plane, and the back surface of the low-rigidity light reflecting member (4) or the other of the reflecting member supporting surface (2). The surface and the surface (2b) of each of the protrusions are adhered via a cushioning material (3) , and all the adhered portions are adhered via the cushioning material.
It is characterized by having been done.

In the optical component according to a second aspect of the present invention, in the first aspect, the plurality of protrusion surfaces (2b) are formed on the reflection member support surface (2), and the protrusion surface (2b) is formed. ) Is formed with a position regulating hole (2c), and a projection (5a) to be inserted into the position regulating hole (2c) is formed on the back surface of the low-rigidity light reflecting member (4). The projection (5a) is inserted into 2c).

As the low-rigidity light reflecting member (4) having the reflecting surface (6) formed on the surface, there is, for example, plastic or glass having a metal deposited on the surface. Also,
A material having high rigidity such as metal, ceramic, or plastic composite material can be used for the high rigidity support member (1). Further, the shape of the position regulating hole (2c) may be a circle, an oval, or the like.

[0007]

According to the present invention having the above-described structure, the surfaces (2b) of the plurality of protrusions are arranged in the same plane. In order to arrange the plurality of protrusion surfaces (2b) in the same plane as described above, the plurality of protrusion surfaces (2b) may be formed flush with each other by grinding or the like. As in the present invention, it is easier to form the plurality of projecting portion surfaces (2b) flush with each other than to eliminate the projecting portion surface (2b) and form the entire surface flush. When both the reflecting member supporting surface (2) of the high-rigidity supporting member (1) and the back surface of the low-rigidity light reflecting member (4) are formed as flat surfaces, the low-rigidity light reflecting member (4) has the high rigidity reflecting member (4). The low-rigidity optical member (4) is deformed following the reflecting member supporting surface (2) of the rigid supporting member (1), but through a plurality of protrusion surfaces (2b) arranged in the same plane as in the present invention. ) And the high-rigidity support member (1), the deformation due to the above-mentioned copying is eliminated.

Further, the low-rigidity light reflecting member (4) and the high-rigidity supporting member (1) are fixed via the plurality of projecting portion surfaces (2b) and the cushioning material (3) adhered to the surfaces. Therefore, even if the back surface of the low-rigidity light reflecting member (4) or the other surface of the reflecting member supporting surface (2) is not completely flush (even if there are some irregularities), The irregularities are absorbed by the cushioning material (3). For this reason,
The light reflecting surface (6) of the low-rigidity light reflecting member surface (4) will not be distorted even if the projection surface (2b) has some irregularities. Also, when a difference occurs in the amount of expansion and contraction between the low-rigidity light reflecting member (4) and the high-rigidity supporting member (1) due to a temperature change, the deformation of the cushioning material (3) reduces the distortion. Due to the absorption, the low-rigidity light reflecting member (4) is prevented from being distorted.

[0009]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory view of a first embodiment of the optical component of the present invention. In FIG. 1, three protruding portions 2 are provided on the surface of a high-rigidity support member 1 made of metal such as iron, that is, on an optical member support surface 2.
a is formed, and the surface 2b of each protruding portion 2a is arranged in the same plane by grinding (formed flush). The back surface of the low-rigidity light reflecting member 4 is fixed to each of the protruding portion surfaces 2b via a buffer material (silicone-based adhesive) 3 which also serves as an adhesive. The low-rigidity light reflecting member 4 is composed of an injection-molded polycarbonate plastic body 5 and a light reflecting surface 6 formed by evaporating copper on the surface thereof. The optical component K of the present embodiment is constituted by the components indicated by the reference numerals 1 to 6. The optical component K is used by attaching the high-rigidity support member 1 to a necessary place (for example, a place where a reflection mirror is installed in a copying machine).

Next, the operation of the optical component of the first embodiment will be described. Forming the surfaces 2b of the plurality of protrusions 2a flush with each other as in the above-described embodiment is equivalent to eliminating the protrusions 2a and covering the entire surface (optical member support surface) 2 of the high-rigidity support plate 1. It is easier than forming them together. When both the reflecting member supporting surface 2 of the high rigid supporting member 1 and the back surface of the low rigid light reflecting member 4 are formed as flat surfaces,
Although the low-rigidity light reflecting member 4 is deformed following the reflecting member supporting surface 2 of the high-rigidity supporting member 1, the low-rigidity optical member 4 is provided on a plurality of protrusion surfaces 2b arranged in the same plane as in the present invention. Is fixed, the deformation following the entire flat reflecting member supporting surface 2 of the high rigidity supporting member 1 is eliminated.

Further, since the low-rigidity light reflecting member 4 and the high-rigidity supporting member 1 are fixed via the plurality of protruding portion surfaces 2b and the cushioning material 3 serving as an adhesive on the surfaces, the low-rigidity light reflecting member 4 and the high-rigidity supporting member 1 are fixed. Even if the back surface of the rigid light reflecting member 4 is not completely flush (even if there are some irregularities), the irregularities are absorbed by the deformation of the cushioning material 3. Therefore, the light reflecting surface 6 on the surface of the low-rigidity light reflecting member 4 is not distorted even if the projection surface 2b of the reflecting member supporting surface 2 has some irregularities. Further, even when a difference occurs in the amount of expansion or contraction between the low-rigidity light reflecting member 4 and the high-rigidity supporting member 1 due to a temperature change, the deformation is absorbed by the cushioning material 3 to absorb the distortion. The light reflecting member 4 is prevented from being distorted.

Next, referring to FIG.
An embodiment will be described. In the description of the second embodiment, the same reference numerals as in the first embodiment are used for the components of the second embodiment that correspond to the components of the first embodiment.
By using such reference numerals, description overlapping with the description of the first embodiment will be omitted. In the second embodiment shown in FIG. 2, a position regulating hole 2c is formed in the three protruding portions 2a of the high rigid support member 1, and a protrusion 5a is formed on the back surface of the plastic main body 5 of the low rigid light reflecting member 4. Are formed. The projection 5a is inserted into the position regulating hole 2c. In FIG. 2, the position regulating hole 2c formed in the protrusion 2a arranged at the left end of the three protrusions 2a is circular, and the position regulation hole 2e formed in the other two protrusions 2a. Is oval. The inner diameter of the circular position restricting hole 2c and the minor diameter of the elliptical position restricting holes 2e, 2e are formed to have the same dimensions. The protrusions 5a are all circular in cross section, and the diameter thereof is the circular position regulating hole 2c.
Is set to a size that fits into the inner diameter of the or the shorter diameter of the oval position regulating hole 2e. Accordingly, in the second embodiment, the projection 5a inserted into the circular position regulating hole 2c causes the low-rigidity light reflecting member 4 to move in the left-right direction (the left-right direction in FIG. 2) with respect to the high-rigidity supporting member 1. Positioning can be easily performed. In addition, the three projections 5a and the respective position regulating holes 2c, 2e,
2e, the position of the low-rigidity light reflecting member 4 in the front-rear direction with respect to the high-rigidity support member 1 (the direction perpendicular to the paper surface in FIG. 2) and the relative rotation position in a plane including the protrusion surface 2b Can be easily performed.

Next, a third embodiment of the optical component of the present invention will be described with reference to FIGS. FIG. 3 shows an optical component K of the third embodiment.
And FIG. 4 is a perspective view. In the description of the third embodiment, the same reference numerals as in the first and second embodiments are used for the components of the third embodiment corresponding to the components of the first and second embodiments. . By using such reference numerals, the description overlapping with the description of the first and second embodiments will be omitted. In the third embodiment shown in FIGS. 3 and 4, the high-rigidity support member 1 is a sheet metal bent in a U-shape. A protruding portion 2a is provided on the surface of the sheet metal by drawing. The surface 2b of the protrusion 2a is arranged in the same plane by grinding. In the third embodiment, the left one of the three projections 2a has a circular position regulating hole 2c.
Is formed on the right protruding portion 2a, but an oval position restricting hole 2e is formed, but no position restricting hole is formed on the central protruding portion 2a. The position restricting holes 2 are formed on the back surface of the plastic body 5 of the low-rigidity light reflecting member 4.
Two projections 5a to be fitted with c and 2e are provided. Therefore, in the third embodiment, the protrusion 5a inserted into the circular position regulating hole 2c causes the low-rigidity light reflecting member 4 to move in the left-right direction with respect to the high-rigidity supporting member 1 (see FIG. 2).
(In the left-right direction). Further, the low-rigidity light reflecting member 4 is formed by the two projections 5a and the respective position regulating holes 2c and 2e fitted thereto.
The position in the front-rear direction (the direction perpendicular to the paper surface in FIG. 2) and the relative rotation position with respect to the high-rigidity support member 1 can be easily determined. According to the third embodiment, since a high-rigidity support member obtained by pressing a sheet metal is used, the manufacturing cost can be reduced.

The embodiments of the optical component according to the present invention have been described above in detail. However, the present invention is not limited to the above embodiments, and does not depart from the present invention described in the claims. Various design changes can be made. For example, an elastic member such as a rubber block and an adhesive may be used instead of using an adhesive that also serves as a buffer.

[0015]

According to the present invention, forming the surfaces of a plurality of protrusions flush with each other (forming them on the same plane) means eliminating the surface of the protrusions and forming the entire surface flush. It is easier than that. In addition, since the low-rigidity light reflecting member is supported by the high-rigidity support member via the cushioning material on the surface of the plurality of protrusions, the light-reflection member does not deform when attached to the high-rigidity support member. In addition, since it is not necessary to make the surface of the protruding portion provided on the reflection member support surface of the high-rigidity support member or the back surface of the low-rigidity light reflection member have high precision, a processing method with high mass productivity, for example, a sheet metal pressing process is used. As a result, the manufacturing cost can be reduced. In addition, the quality of the optical system can be improved because the light reflecting surface of the low-rigidity light reflecting member is not distorted even by a temperature change during actual use.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a first embodiment of the optical component of the present invention.

FIG. 2 is a longitudinal sectional view of a second embodiment of the optical component of the present invention.

FIG. 3 is a longitudinal sectional view of a third embodiment of the optical component of the present invention.

FIG. 4 is a perspective view of a third embodiment of the optical component of the present invention.

[Explanation of symbols]

K: optical component, 1: high rigid support member, 2: reflective member support surface, 2a: projecting portion, 2b: projecting surface, 2c: position regulating hole, 3: buffer material, 4: low rigid light reflecting member, 5a ... projections,
6 ... light reflecting surface,

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) G02B 5/08 G02B 7/00 G02B 7/18 F16F 15/00-15/32

Claims (2)

(57) [Claims] 1. An optical component comprising: a low-rigidity light reflecting member provided with a light reflecting surface on a surface; and a high-rigidity supporting member provided with a reflecting member supporting surface for fixing a back surface of the low-rigidity light reflecting member. A plurality of protrusions are formed on a back surface of the low-rigidity light reflecting member or one surface of the reflection member supporting surface, and the surfaces of the plurality of protrusions are respectively arranged in the same plane, and the low-rigidity light Optics wherein the back surface of the reflection member or the other surface of the reflection member support surface and the surface of each of the protruding portions are bonded via a buffer material , and all the bonded portions are bonded via the buffer material. parts. 2. A surface of the plurality of protrusions is formed on the reflection member support surface, a position restriction hole is formed on the surface of the protrusion, and a rear surface of the low-rigidity light reflection member is inserted into the position restriction hole. The optical component according to claim 1, wherein a protrusion is formed, and the protrusion is inserted into the position regulating hole.