JP3179815B2 - Optical device unit housing and method of forming the same - 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 device unit housing used for an optical print head or an equal-size sensor unit in an image output apparatus or an image input apparatus such as a facsimile, a digital copying machine, and a printer, and a forming process thereof. About the method.

[0002]

2. Description of the Related Art A conventional optical device unit housing used for an optical print head and a 1: 1 sensor unit in an image input / output device such as a digital copying machine is disclosed in, for example, Japanese Utility Model Laid-Open No. 1-169257. Something like that. This relates to an arrangement of a housing of an exposure apparatus (that is, an optical device unit housing) disposed close to a photosensitive drum in an electrophotographic recording apparatus. In this case, by using such a housing, the angle occupied by the exposure device with respect to the peripheral surface of the photosensitive drum can be reduced, so that the size can be reduced without lowering the reliability of the device.

[0003] Further, as a device provided with the above-mentioned housing, there is, for example, an optical print head of a solid-state scanning type. In this case, the optical print head integrally holds at least an array light source such as a phosphor dot array, an LED array, and an LC shutter array, and a 1: 1 imaging element such as a rod lens array and a roof mirror lens array. The housing is made of In such an optical print head, flare light and ghost light are liable to occur, and the image quality is greatly affected unless appropriate countermeasures are taken. Therefore, a specific example of an optical print head using a phosphor dot array or a roof mirror lens array in which measures against flare light and ghost light have been taken will be described with reference to FIG.

[0006] A roof mirror lens array (RMLA) 2 is provided in a housing 1, and a reflection mirror 3 is arranged on the front surface of the roof mirror lens array 2 in an inclined manner. A light shielding member 4 is attached to the front outside of the reflection mirror 3, and an extension member 5 is provided above the reflection mirror 3 so as to cover the inside. A slit opening 6 is formed on the incident light side below the housing 1 so as to be inclined.
A hole 7 is formed on the outgoing light side of the front side surface of the housing 1. In the optical print head having such a configuration, light emitted from the object surface 8 is transmitted through the slit opening 6.
, Is deflected and reflected by the reflection mirror 3 and enters the roof mirror lens array 2. The convergent light reflected and converged by the roof mirror lens array 2 passes through a transparent portion 3a formed integrally with the reflection mirror 3, and then the image plane 9 of the roof mirror lens array 2 on which the photosensitive member surface is to be disposed.
An image is formed at the upper point Q, whereby a target image can be formed on the surface of the photosensitive drum or the like.

[0005]

In the optical print head as described above, the cross-sectional side surface of the slit opening 6 is formed in a tapered shape so as to have a predetermined angle with respect to the light beam in a cross section perpendicular to the array direction. Therefore, ghost light due to reflection on the inclined surface can be removed. However, considering the cost and configuration of the optical print head including the housing 1, the structure and shape of the housing 1, and the forming method, the shape of the slit opening 6, the structure of the housing 1, and the forming method are naturally limited. And it is not always economical.

[0006] Such a phenomenon can be said of the same magnification sensor unit and its housing. FIG. 12 and FIG. 13 show an example of a unit-size sensor unit. FIG. 12 is a diagram often used in a digital copier, and the same-magnification imaging element 30 includes a housing 31.
A fixed-size sensor 34 covered with a cover glass 33 is provided on a PCB substrate 32 fixed at an upper portion of the housing 31 and screwed at a lower portion of the housing 31. FIG. 13 is a diagram often used for a facsimile, in which a light source 36 is disposed on a slope portion of a housing 35,
Is held by a housing 35 on the side surface. A PCB board 39 is placed on a leaf spring 38 at the bottom of the housing 35, and a 1: 1 sensor 41 covered with a cover glass 40 is provided on the PCB board 39. ing. in this way,
In FIG. 12, the PCB substrate 32 is directly attached to the housing 31, so that the
In FIG. 13, an equal-magnification sensor 41 is fixed to a housing 35 by a leaf spring 38, and the housing 35 and an equal-magnification imaging element 37 are used. Double sensor 41 and light source 3 facing these
And 6 are integrated. Therefore, even in such a unit-size sensor unit, the configuration, shape, forming method, and the like including the housings 31 and 35 are naturally limited, and cannot be said to be necessarily versatile and economical.

[0007]

According to the first aspect of the present invention, there is provided a first light source for holding an array light source in which at least a large number of light emitting segments are arranged in an array or an array sensor in which a large number of light receiving segments are arranged in an array. A holding unit, a second holding unit that holds the same-size imaging element facing the array light source or the array sensor, and a partition plate that partitions between the first holding unit and the second holding unit. An optical device unit housing comprising a formed housing, wherein the arrayed light source or the arrayed sensor and the unity magnification imaging element are integrally unitized by the housing, the partition of the molded housing being A slit opening having a slit width through which only the effective light beam passes was formed at a position where the plate could be processed later.

According to the second aspect of the present invention, a housing forming die for forming a housing is formed, and a molding member is drawn into the housing forming die to thereby form the first holding portion and the first holding portion in accordance with the mold shape. 2 holding part and a partition plate for separating between the first holding part and the second holding part are integrally formed at the same time to form the housing, and the formed housing is taken out from the housing forming die. , Molding
The slit opening was formed by performing post-processing at a position where post-processing of the partition plate provided on the processed housing was possible.

According to the third aspect of the present invention, a housing forming die for forming a housing is formed, and a molding member is inserted into the housing forming die to form the first holding portion and the first holding portion by the shape of the molding member. 2 holding part and a partition plate for separating between the first holding part and the second holding part are integrally formed at the same time to form the housing, and the formed housing is taken out from the housing forming die. , Molding
A slit opening having a slit width through which only an effective light beam passes was formed by performing post-processing at a position where post-processing of the partition plate provided on the processed housing was possible.

[0010]

[0011]

According to the first aspect of the present invention, since the shape of the slit opening of the housing has a slit width such that only an effective light beam passes, it is possible to prevent flare light and ghost light from being generated. Further, since the slit opening is formed at a position where post-processing can be performed, the slit width through which only the effective light beam passes can be easily formed by post-processing.

According to the second aspect of the present invention, the slit opening is formed by post-processing so that the slit shape is formed with the minimum possible number of processing steps in consideration of other attached optical systems. It becomes possible.

According to the third aspect of the present invention, the slit opening is formed in a shape having a slit width through which only the effective light beam passes in post-processing, so that the slit opening can be appropriately formed from both surfaces of the optical function and processing. Thus, it is possible to prevent the occurrence of flare light and ghost light, and to further simplify the working process.

[0014]

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention is shown in FIGS.
A description will be given based on FIG. Here, the configuration of an optical device unit housing and a forming method thereof will be described by taking an example of an optical print head using a combination of a roof mirror lens array and a phosphor dot array. First, the overall configuration of the optical print head 11 will be described with reference to FIG. The optical print head 11 is provided close to the photosensitive drum 10. The housing 12 of the optical print head 11 is provided below a glass substrate 13, and the glass substrate 13 is fixed to a support plate 15 via an elastic member 14 by screws 16. On the surface of the glass substrate 13, there is provided a phosphor dot array 17 as an array light source in which a number of light emitting segments (not shown) are arranged in an array. A roof mirror lens array 18 as an equal-magnification image-forming element for forming an image of the light emitted from the phosphor dot array 17 is provided in an upper portion of the housing 12. On the optical path in front of the roof mirror lens array 18, a reflection mirror 19 is attached by the housing 12 so as to be inclined. As a result, the light emitted from the phosphor dot array 17 passes through the slit opening 20 formed in the housing 12, is deflected and reflected by the reflection mirror 19, and is reflected by the roof mirror lens array (RMLA).
18 is incident. The converged light reflected and converged by the roof mirror lens array 18 passes through a transparent portion 19a integrally formed on the lower side of the reflection mirror 19 and irradiates the surface of the photoreceptor drum 10 to thereby achieve an object. An image can be drawn on the drum surface. Although an array light source has been described here as an example, an array sensor in which a large number of light receiving segments are arranged in an array may be used.

Next, the shape of the housing 12 of the optical print head 11 will be described with reference to FIG. The housing 12 includes a first holding portion 21 for holding and positioning the phosphor dot array 17 in the reference plane a _1, a second holding unit 22 for holding and positioning the roof mirror lens array 18 in the reference plane a _2, A third holding portion 23 for holding the reflection mirror 19 including the transparent portion 19a; a roof mirror lens array 18 covering the upper surface of the phosphor dot array 17;
9 and a slit opening 20 for preventing flare light and ghost light and allowing only an effective light beam to pass therethrough. This slit opening 20
Is formed at a position where the partition plate 24 can be processed later, and has a slit width that allows only the effective light beam to pass therethrough.

In such a configuration, the housing 12
Is generally formed by molding or cutting a resin or aluminum or the like, but the slit opening 20 must have a shape capable of forming and working regardless of simultaneous molding or post-processing. The shape is also limited by the structure and shape of the housing 12 around the slit opening 20. As shown in FIG. 1, both sides of the slit opening 20 are exposed to the outside of the housing 12, and a certain amount of margin is provided in the structure and shape around the opening to form the slit opening 20. If there is a margin enough to allow a jig or a cutting tool to enter or exit, the work can be performed from two directions A and B (however, the work from the A direction requires the roof mirror lens array 18 and the reflection mirror 19). C that is the holding part
Part obstructs from the right oblique direction), the shape to prevent flare light and ghost light is time, workability,
It can be formed if the forming means, cost, etc. are ignored. However, when actually commercializing, since the shape with the lowest working cost is selected, in the case of post-machining by cutting, the shape of the actual housing 12 is such that only one machining step is required. Specifically, the shape shown in FIG. 11 as described in the conventional example, the shape shown in FIG.
(Note that FIG. 10 is considered to have a shape similar to a part of the housing 12 in FIG. 2.) In general, the shape is as shown in FIG. Since these shapes are very simple, they can be machined with a very common cutting tool such as an end mill or a circular saw. In the case of the shape shown in FIG. 9, flare light can be prevented, but ghost light cannot be prevented.
It is necessary to apply anti-reflection means such as anti-reflection treatment to the side surface of the light source.

Next, a method of forming the housing 12 will be described with reference to FIGS. In general, since the housing has a complicated structure and strict precision, molding by a conventional mold or cutting is low in mass productivity and expensive. Therefore, in the present embodiment, the housing 12 is formed by the extrusion method to reduce the cost and improve the productivity. FIG. 3 shows the shape of the extruded material of the housing 12, and FIG. 4 shows an example of an optical print head obtained by molding the housing 12 by an extrusion method.

In this case, first, a housing mold (not shown) for molding the housing 12 is prepared. Next, a molding member (for example, aluminum, resin, or the like) is drawn in using the molding die for the housing, so that the first holding portion 21, the second holding portion 22, the first holding portion 21, It is possible to form the housing 12 in which the partition plate 24 for partitioning between the second holding portion 22 and the holding portion 22 is integrally formed at the same time. Next, the molded housing 12 is taken out by extrusion from the housing mold. afterwards,
A slit opening 20 having a slit width enough to allow only the effective light beam to pass therethrough is formed at a position in the partition plate 24 of the housing 12 where post-processing is possible by post-processing. Thereby, the housing 12 that integrally forms the phosphor dot array 17 and the roof mirror lens array 18 into a unit.
Can be created.

That is, the roof mirror lens array 18
Is a second holding portion 2 having a box shape so as to be extrudable.
2 inserted from a vertical direction (a direction perpendicular to the paper surface) longitudinal direction of the housing 12, the reference plane a ₂ is brought into contact with the front surface of the roof mirror lens array 18, the pressing member comprising a supporting plate 25 and the leaf spring 26 from the back side And is positioned and fixed at a predetermined position. On the outside of the housing 12 behind the support plate 25, there are formed pilot holes 27 for tapping screws, which are provided at the both ends in the longitudinal direction of the housing 12 by simultaneous extrusion molding to attach shielding (side plate) members (not shown). In this case, if the shielding member is formed of resin, it is advantageous in terms of workability, weight reduction, and cost. Also, in this case,
The slit opening 20 is always post-processed by cutting,
The flare light and the ghost light can be prevented and the shape can be made to be advantageous from the processing side, and the same effect as in the case of FIGS. 1 and 2 can be obtained.

In the present embodiment, the extrusion method is used as the method of molding the housing 12. However, the present invention is not limited to this, and it is also possible to form a mold using a molding method or a casting. The effect of post-processing in such a mold or casting is effective when the slits are simultaneously molded with a mold and the strength of the housing is reduced, causing warpage or when the mold that forms the slits is formed after molding. This is advantageous in cases where it is impossible to remove the housing due to the structure of the housing and cannot actually be molded.

Next, a second embodiment of the present invention will be described with reference to FIGS. In this embodiment, the housing 12
5 shows another forming method. FIG. 5 shows the shape of the extruded material of the housing 12, and FIG. 6 shows the structure of an optical print head in which the housing 12 is formed by extrusion.

That is, the housing 12 has a box-shaped first holding portion 21 which is located at a lower portion and covers the entire phosphor dot array 17 in a cross section perpendicular to the array direction of the phosphor dot array 17. A box-shaped second holding unit 22 having an open effective light beam entrance / exit side for holding the roof mirror lens array 18 above the third mirror; a third holding unit 23 for holding the reflection mirror 19 including the transparent portion 19a; A partition plate 24 for partitioning between the first holding portion 21 and the second holding portion 22; and a flare light and a ghost light among the light emitted from the light emitting point P of the phosphor dot array array 17 to prevent only the effective light flux. And a slit opening 20 through which the light passes.

In the method of forming the housing 12 according to the present embodiment, the first holding portion 21 and the second holding portion 22
Is formed by extrusion and not only the slit opening 20 is formed by post-processing, but also the slit opening 20 is formed into a shape that allows only an effective light beam to pass therethrough and that can be post-processed with a minimum processing step. Thus, the housing can be formed by integrally integrating the phosphor dot array 17 and the roof mirror lens array 18 into a unit.

By molding the housing 12 in this manner, unlike the case where the support plate 15 is attached to the lower surface side as shown in FIGS. It is possible to realize a print head. In this case, attachment of the phosphor dot array 17, the front side (light emission point side) of the glass substrate 13 of the phosphor dot array 17 to the reference plane a ₁ provided on the inner wall of the first holding portion 21
The phosphor dot array 17 is inserted from the longitudinal direction of the housing 12 (perpendicular to the paper surface) so that both ends of the glass substrate 13 are in contact with each other, and the support plate 15 and the elastic member 14 are pressed from the back side of the glass substrate 13. The member is pressed and positioned and fixed at a predetermined position. The installation of the roof mirror lens array 18 can be performed in the same manner as in the case of FIG. 4 described above.

Next, a specific example in which the housing 12 is formed by an extrusion method based on the two embodiments described above will be described. In the case where the housing 12 having the shape shown in FIG. 5 is extruded, the slit opening 20 can be simultaneously formed in some cases (for example, when the width of the slit opening 20 is wide). However, in the housing 12 in the present embodiment, in a cross section perpendicular to the array direction, the slit opening 20 prevents flare light and ghost light, reduces the width as much as possible in order to allow only the effective light beam to pass, and forms a box shape. Since the first holding portion 21 is formed so as to cover the entire phosphor dot array 17, the slit opening 20 is always post-processed by cutting.

A specific example of the housing 12 will now be described. FIG. 7A and FIG.
2 shows the shape when extruded. In this case, if the width of the slit opening 20 is 2.1 mm and the die material of the hot extrusion is SKD61 having a thickness of 45 to 50 mm, the temperature of the die during extrusion is 550 to 550.
Increase to 560 ° C. Accordingly, the mold strength is reduced by about 20% as compared with that at normal temperature. In addition, the shear stress of the extrusion dies is greatly affected by the use thereof.
It is desirable to set it to ² or less (in some manufacturers, the allowable value is set as high as 40 to 45 kg / mm ² ).

The box-shaped first holding portion 21 has an internal cross-sectional area of 187.2 mm ² and a molding pressure of 66 kg / mm.
² , when the width of the slit opening 20 is 2.1 mm, the thickness of the die is 50 mm, and the shear stress of the slit opening 20 is calculated,

[0029]

(Equation 1)

And exceeds the allowable value.

Therefore, if the slit opening 20 is formed by extrusion, the die slit will be damaged. Therefore, the slit opening 20 must be formed by post-processing such as cutting or pressing. Further, when only one side of the slit opening 20 is exposed to the outside of the housing 12, or when the post-processing can be performed from only one direction due to the structure and shape around the slit opening 20 even when both sides are exposed. Since the operation is performed only from the side where the opening can be formed, the shape of the slit opening 20 is necessarily determined. Further, depending on the structure and shape of the housing 12 on the side where the opening can be formed, the slit opening 20 is formed.
Will be further limited. In the case of the housing 12 shown in FIG. 5, the slit opening 20 is formed only in one direction (A direction) on the side where the opening is exposed outside the housing 12, and the roof mirror is formed. Since the cutting tool cannot be moved in and out in the vertical direction by the portion C which is a holding portion between the lens array 18 and the reflection mirror 19, the operation is performed from the upper right side. Thereby, the housing 1 as shown in FIG.
In the case of No. 2, the shape of the slit opening 20 prevents flare light and ghost light, and requires only one processing step with a simple shape, that is, as shown in FIGS.
It will be limited to the shape of 0. For this reason, the shape of the slit opening 20 in FIG. 7 is formed by a circular saw at an angle of 7 °.

The array light source (phosphor dot array 1)
7) Imaging element with equal magnification (roof mirror lens array 18)
Type, combination method, and further, the housing (housing 12), pressing member shape, each positioning, fixing means, etc.
The present invention is not limited to the above-described embodiments and specific examples. Further, the description so far has been directed to an optical print head, but the present invention is not limited to this. For example, a CCD 1: 1 sensor and a 1: 1 imaging element such as a rod lens array and a roof mirror lens array are combined. The same can be applied to the double sensor unit.

Next, as a third embodiment, means for forcing deflection generated in the housing 12 in each of the embodiments described above will be described. Generally, in an optical device in which an optical device such as an imaging element, a light receiving element, and a light source is assembled to a housing singly or in combination, the housing is required to be as small, lightweight and cost-effective as possible. You. Therefore, no matter how the housing is formed, the thickness of the housing is reduced and the thickness is reduced as much as possible. By performing such a process, a portion having a weak strength is generated, and deflection occurs there. In particular, the deflection becomes remarkable in a housing of an optical device that is long in the longitudinal direction, such as a 1: 1 imaging element, a 1: 1 sensor, or an array light source. In the past, as countermeasures against such deflection, a reinforcing member was inserted into a weak part to force the deflection, or the thickness of the portion was increased to prevent the occurrence of the deflection, and The outbreak was being dealt with.

Such deflection occurs in each of the embodiments described above in the same manner as in the conventional case. As an example, in the housing 12 of FIGS. 3 and 5 formed by extrusion molding, the box-shaped second holding portion 2 is used.
2 roof mirror lens array 18 and reflection mirror 19
Is deformed in the direction D (downward) as indicated by the arrow in FIG. As a cause of such deflection, insufficient strength of the E portion at the root due to the thickness may be considered.
Reduction in strength due to hot extrusion (processing temperature 5
When the temperature rises to 50 to 560 ° C., the longitudinal elastic coefficient decreases to 1/7, and deflection occurs due to its own weight because the reflection mirror 19 side is open).

Therefore, in this embodiment, the lower surface of the box-shaped second holding portion 22 and one lower reference surface a ₂ are connected to the reference surface a _{3 for} mounting the roof mirror lens array 18 as an optical device. Then, the roof mirror lens array 18 is inserted into the second holding portion 22 and is fixed in contact with the respective reference surfaces, thereby forcing the deflection of the portion C. That is,
The shape of the portion C is made to conform to the outer shape of the roof mirror lens array 18, thereby forcing deflection. Similarly, the deflection may be forced by using the reflection mirror 19 as an optical device. in this case,
The mounting reference surface of the reflection mirror 19 is
It becomes the third holding portion 23 formed on the side.

Further, in the housing 12 of FIG. 1 formed by molding or cutting, the roof mirror lens array 18 of the box-shaped second holding portion 22 and the reflection mirror 1
Although the entire upper holding portion 9 is bent downward around the center in the longitudinal direction, the deflection can be forced in the same manner by the above-described means.

Therefore, as described above, the deflection generated in the manufacturing process of the housing 12 is positioned and fixed to the reference portion (surface) of the holding portion of the housing 12, and is forced. Since it is not necessary to insert the housing 12 or increase the thickness of the housing 12, the size, weight, and cost of the housing 12 can be reduced.

In the means for forcing the deflection, the types and shapes of optical devices such as an imaging element, a light receiving element, and a light source, the optical devices alone or in combination, and the shape and shape of a housing are also considered. The forming method and the like are not limited to this embodiment, and the present invention can be applied to a general housing of an optical device in which deflection occurs in a processing step.

[0039]

According to the first aspect of the present invention, a first holding unit for holding an array light source in which at least a large number of light emitting segments are arranged in an array or an array sensor in which a large number of light receiving segments are arranged in an array, A housing in which a second holding unit that holds an equal-magnification imaging element facing the array light source or the array sensor and a partition plate that partitions between the first holding unit and the second holding unit are formed. With
In the optical device unit housing formed by integral unit and said like Baiyui image element and the array-shaped light source or the array sensor by the housing, molded under
Since a slit opening having a slit width through which only the effective light beam passes is formed at a position where the partition plate of the engineered housing can be further processed, it is possible to prevent flare light and ghost light from being generated, In addition, since the slit opening is formed at a position where post-processing can be performed, the slit width through which only the effective light beam passes can be easily formed by post-processing, whereby the housing can be formed and the slit opening can be formed. The post-processing workability can be improved, and the production cost can be reduced to improve the production efficiency.

According to the second aspect of the present invention, a housing molding die for molding the housing is prepared, and a molding member is inserted into the housing molding die, whereby the first holding portion and the first holding portion are formed by the mold shape. 2 holding part and a partition plate for separating between the first holding part and the second holding part are integrally formed at the same time to form the housing, and the formed housing is taken out from the housing forming die. , Molding
Since the slit opening is formed by performing post-processing at a position where the partition plate provided on the processed housing can be post-processed, the slit shape of the slit opening is considered in consideration of other attached optical systems. In this way, it is possible to form with the minimum possible number of processing steps, thereby simplifying the working steps of the forming processing, improving the productivity, being advantageous in terms of cost, and improving the strength of the housing. It is possible to provide an optical device unit housing having a highly accurate slit opening without lowering the size.

According to the third aspect of the present invention, a housing forming die for forming the housing is formed, and a molding member is drawn into the housing forming die to form the first holding portion and the first holding portion by the shape of the molding member. 2 holding part and a partition plate for separating between the first holding part and the second holding part are integrally formed at the same time to form the housing, and the formed housing is taken out from the housing forming die. , Molding
A slit opening having a slit width through which only the effective light beam passes is formed by performing post-processing at a position where the partition plate provided in the processed housing can be post-processed, so that optical functions and processing are performed. It is possible to determine an appropriate shape of the slit opening from both sides, thereby preventing the occurrence of flare light and ghost light, and providing an optical device unit housing that is more advantageous in work efficiency and productivity. Is what you can do.

[0042]

[Brief description of the drawings]

FIG. 1 is a sectional view showing a shape of a housing of an optical print head according to a first embodiment of the present invention.

FIG. 2 is a sectional view showing a shape of an optical print head constituted by using the housing of FIG.

FIG. 3 is a cross-sectional view showing a shape of a housing formed by an extrusion method.

FIG. 4 is a cross-sectional view showing a shape of an optical print head constituted by using a housing formed by the extrusion processing method of FIG.

FIG. 5 is a sectional view showing a shape of a housing of an optical print head according to a second embodiment of the present invention.

FIG. 6 is a sectional view showing a shape of an optical print head constituted by using the housing of FIG. 5;

FIGS. 7A and 7B show a specific example of a configuration of a housing according to a third embodiment of the present invention, wherein FIG. 7A is a sectional view of the housing, FIG. 7B is a front view thereof, and FIG. It is AA sectional drawing of.

FIG. 8 is a cross-sectional view showing a configuration example of a housing in a case where only one post-processing step is required.

FIG. 9 is a sectional view showing another example of the configuration of FIG. 8;

FIG. 10 is a cross-sectional view showing another configuration example of FIG.

FIG. 11 is a sectional view showing a conventional example.

FIG. 12 is a cross-sectional view showing an example of a unit-size sensor unit often used as a digital copier.

FIG. 13 is a sectional view showing an example of a unit-size sensor unit often used as a facsimile.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 12 Housing 17 Array light source 18 1: 1 imaging element 20 Slit opening 21 First holding part 22 Second holding part 24 Partition plate

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ identification code FI H04N 1/028 1/036 (58) Fields investigated (Int.Cl. ⁷ , DB name) B41J 2/44 B41J 2/45 B41J 2/455 G03G 15/04 H01L 33/00 H04N 1/028 H04N 1/036

Claims (3)

(57) [Claims] A first holding unit for holding an array light source in which at least a large number of light emitting segments are arranged in an array or an array sensor in which a large number of light receiving segments are arranged in an array, and the array light source or the array shape A second holding unit for holding the same-magnification imaging element facing the sensor;
A housing provided with a partition plate for partitioning between the holding unit and the second holding unit; the housing unitizes the array light source or the array sensor and the unity magnification imaging element integrally; In the optical device unit housing, a slit opening having a slit width through which only an effective light beam passes is formed at a position where the partition plate of the molded housing can be processed later. Optical device unit housing. 2. A housing forming die for forming a housing is formed, and a first holding portion is formed by extracting a forming member into the housing forming die.
The housing is formed by simultaneously and integrally forming a second holding portion and a partition plate for partitioning the first holding portion and the second holding portion, and the housing formed from the housing mold is formed. A method for forming and processing an optical device unit housing, wherein a slit opening is formed by performing post-processing at a position where post-processing can be performed on the partition plate provided on the taken-out and formed housing. 3. A housing forming die for forming a housing is prepared, and a first holding portion is formed by extracting a forming member into the housing forming die by means of the mold shape.
The housing is formed by simultaneously and integrally forming a second holding portion and a partition plate for partitioning the first holding portion and the second holding portion, and the housing formed from the housing mold is formed. A light opening characterized in that a slit opening having a slit width through which only an effective light beam passes is formed by performing post-processing at a position where post-processing can be performed on the partition plate provided on the taken-out and formed housing. Method for forming device unit housing.