KR900000111B1 - Optical coordinate position input device - Google Patents

Abstract

The invention is related to an optical coordinate position input apparatus which is attached to the front of display device and inputs coordinate positions for the display device. The apparatus is furnished with the part of selection of light to make only light from emitter received. The above selective part has a couple of arrays to arrange receiver corresponding to emitter in a line. And also the selective part has various kinds of caps, the diameters of their transmitting windows are different from one another, and among them, a cap of a certain diameter is optically arranged in a line. Therefore, the output of the device is controlled by the optical array corresponding to light between uncapped devices and capped devices, only devices of large output signal are covered with caps.

Description

Optical coordinate position input device

1 and 2 are for explaining the first embodiment of the light shielding holder according to the present invention, and FIG. 1 is a cross-sectional view thereof.

2 is a partial perspective view thereof

3 to 6 illustrate the light blocking holder according to the second embodiment of the present invention.

3 is a sectional view showing a first embodiment thereof.

4 is a sectional view showing a second embodiment thereof.

5 is a sectional view showing a third embodiment thereof.

6 is a sectional view showing a fourth embodiment thereof.

7 and 8 illustrate an optical arrangement according to a third embodiment of the present invention.

7 is a partial cross-sectional view of an optical arrangement.

8 is a perspective view of FIG. 7.

9 and 10 illustrate a coordinate input device according to a fourth embodiment of the present invention.

9 is an enlarged view of a portion D in FIG. 10;

10 is a rear view showing an outline of the internal structure of the coordinate input device.

11 is a sectional view showing the principal parts of another embodiment.

12 to 14 are for explaining a conventional example.

12 is a perspective view illustrating a state in which a coordinate input device is attached to a front surface of a display device.

13 is a sectional view of the main portion showing the internal structure.

14 is a rear view showing the outline of the internal structure.

* Explanation of symbols for main parts of the drawings

1 frame 1a, 1b corner portion

3: display device 3a: display surface

4 light emitting element 5 light receiving element

7: substrate 112: shading holder

112a: light transmission hole 112b: entrance direction control room

112c: housing 13: lower mold

11, 11 ': light blocking member 12: optical path

13a: terminal 13b: pressing part

14: upper part 14a: protrusion

31: optical array 33a, 33b, 33c: device

34a, 34b: through hole 35a, 35b: gap

48: Light blocking plate 48b, 48c: End

212: Light blocking holder 212c, 212c ', 212c': Light transmitting hole

212d: direction of incidence regulating chamber 214: Frenal lens

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coordinate position input device of a light detection method attached to a front surface of a display device and detecting a coordinate position of the display device and inputting the coordinate position to a computer. As a device for inputting a coordinate position with a finger to a host computer, there are various methods such as an electromagnetic induction method, a capacitance method, a transparent electrode method, and a light detection method. Among them, a light detection method that is attached to the front surface of the display device and can be used to specify a coordinate position in a non-contact manner to the detection device by simply pressing an arbitrary portion of the display device with a finger or the like has attracted attention in terms of reliability and operability. 12 to 14 show conventional examples of the coordinate input device of the light detection method. FIG. 12 is a perspective view showing an example in which the coordinate input device is mounted on the front of the display device, FIG. 13 is a sectional view of the main portion of the light receiving element side, and FIG. 14 is a rear view showing the internal structure of the coordinate input device with the back plate removed. The coordinate input device is formed into a substantially rectangular shape, and has a frame 1 having an opening portion 2 in the center thereof, and a display device using, for example, a CRT as shown in FIG. A pair of light-emitting elements 4 such as LEDs and light-receiving elements 5 such as phototransistors, and a plurality of light-emitting elements 4 and light-receiving, which are arranged in plural numbers on opposite sides of the display surface 3a of 3). It is comprised by the calculating part 6 which detects the position where the optical path 12 was interrupted among the combination of the elements 5, and inputs the coordinate position to the host computer side.

Moreover, the opening part 2 is provided with the operation panel 2a comprised as a VDT (video display terminal) filter, and arrange | positions it in front of the display surface 3a of the display apparatus 3, and the display surface 3a becomes dirty. It prevents dust and dirt from sticking to your eyes. The light emitting element 4 and the light receiving element 5 are fixed to the substrate 7 attached to the frame 1 so that the light emitting portion 4a and the light receiving element 5a face each other. Since the light emitting element 4 and the light receiving element 5 detect only a predetermined operation area A corresponding to the display area for input of the display surface 3a, at the end B of each side, Omitted so as not to cross the optical axis is provided on each side. On the front side of the light receiving portion 5a of the light receiving element 5, a light transmitting hole 8a having a predetermined area and depth is formed so as to allow the light incident from the pair of light emitting elements 4 to be received. The light shielding plate 8 is provided. In addition, an infrared filter 9 made of a visible light blocking filter is attached to the front edge of the light shielding plate 8 and the front surface of the light emitting element 4 over the entire circumference. Therefore, the invisible optical path 12 is formed through the infrared filter 9 on the side surface in which the display surface 3a of the operation panel 2a does not oppose.

When detecting the coordinate position, for example, as shown in Figs. 12 and 14, when the input and depressing position of the display surface 3a is pressed with the finger 10 or the like from the operation panel 2a, it is appropriate. Since the optical path 12 is formed along the surface of the operation panel 2a, the light paths 12 shielded in each of the X-direction and Y-directions are light-received by emitting light and emitting the light emitting elements 4 sequentially. 5) can be detected sequentially. The shielded optical path 12 is characterized by a computing unit, and outputs its coordinate position to a host computer (not shown).

However, in the coordinate input device of the light detection method, it is necessary to keep the light emitting element 4 or the light receiving element 5 at a right angle and a predetermined height with respect to the substrate 7 in order to prevent malfunction. The mounting structure of these optical semiconductor elements 4 and 5 has a problem that it is difficult to increase the positioning accuracy. That is, these optical semiconductor elements 4 and 5 support only one part of the terminals 4b and 5b (see also fifth and sixth) to the substrate 7 so that the main bodies 4a and 5a are installed at the time of installation. Since the light emitting portion is easily tilted from a predetermined direction, and the bottom surface of the main body 4a, 5a is a non-planar surface by potting, the height accuracy with respect to the substrate 7 is maintained. It was hard to be. As a result, the light emitted from the light emitting element 4 is biased from the predetermined optical path 11 or the light that the light receiving element 5 should not receive, i.e., light from another light emitting element 4 which is not paired, or a pair The light emitting element of the present invention detects the reflected light serving as the light source, for example, the reflected light from the visible light blocking filter surface, which is likely to malfunction, which causes a problem in reliability. In addition, the provision of a large number of these optical semiconductor elements 4 and 5, which are difficult to increase the positioning accuracy, has caused a decrease in workability and complicated assembly work.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object thereof is to provide an optical semiconductor device that can easily secure positioning accuracy with respect to a substrate of an optical semiconductor element installed in a single row state, and can prevent malfunction and improve workability. It is a first technical problem to provide a light shield holder of an element. In the coordinate input device of the optical detection method, it is necessary to keep the light emitting element 4 or the light receiving element 5 at a right angle and a predetermined height with respect to the substrate 7 in order to prevent malfunction. The installation structure of these optical semiconductor elements 4 and 5 in the example has a problem that it is difficult to maintain positioning accuracy. That is, since these optical semiconductor elements 4 and 5 support only one part of the terminals 4b and 5b on the substrate 7, only one side of the terminal 4b and 5a tends to tilt and thus the light emitting part or the light receiving part. It is easy to be biased from a predetermined direction, and since the bottom surfaces of the main bodies 4a and 5a are non-planar cross sections by potting, it is difficult to maintain the height accuracy with respect to the substrate 7. As a result, the light emitted from the light emitting element 4 is biased from the predetermined optical path 11 or the light that the light receiving element 5 should not receive, i.e., light or a pair from another unpaired light emitting element 4 The light emitting element is a light source, for example, reflected light on the surface of the visible light blocking filter is detected, and malfunction is likely to occur.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned point, and an object thereof is to provide a light shielding holder of an optical semiconductor element which can easily secure positioning accuracy of an optical semiconductor element with respect to a substrate and can prevent malfunction. Let's assume technical problem. In addition, the light emitting device and the light receiving device are all classified according to their performance, and one of them is used for the product, but even within the one class, the performance is uneven for each device, so it is difficult to set the threshold level and signal processing. Becomes difficult.

Therefore, in the past, the device showing a large signal value was replaced with another one, but this replacement work was very troublesome because the device was soldered to the substrate.

The present invention solves the problems of the prior art described above, and simply adjusts the amount of light between each element to eliminate the inconsistency in performance and to provide a uniform signal output in a constant optical arrangement. It is set as a 3rd technical subject to provide.

In addition, in recent years, as the general information is increasing, it is strongly required to enlarge the operation area A with respect to the display surface 3a, and accordingly, the installation area of the light emitting element 4 and the light receiving element 5 is deformed. It became necessary to widen to the edge part B of a side. However, when the operating area A is extended to the corner of the opening 2 and the light emitting element 4 and the light receiving element are provided correspondingly, detection errors are generated in the light receiving element 5 located at the end B of each side. Something happened and it became a new problem. This is because the matrix by the light side of the light emitting element 4 and the light receiving element 5 is enlarged over the entire display surface 2a as the operation region A is enlarged, and the sensitivity of the light receiving element 5 is improved in recent years. The cause is caused by the incidence of the amount of light generating a predetermined level or more output to the light receiving element 5 provided at the end side due to the intrusion or diffraction of light from the end of the light shielding plate 8. It is believed that.

That is, in the related art, since the infrared filter 9 on the side of the projection light, the light receiving element 5 and the light emitting element 4 are separated, and this distance is shortened as the matrix is enlarged, from each corner of the infrared filter 9 The incident light beams return inside, resulting in detection by an element provided at the end of the column of light receiving elements 5.

The present invention has been made in view of the above-described situation of the prior art, and its object is to provide a coordinate input device without a coordinate position detection miss caused by light intrusion or leakage. In order to solve the first to fourth technical problems described above, the present invention has a plurality of arrangements in which a light emitting element and a corresponding light receiving element are arranged in a single row, and receives only light from the light emitting element to the light receiving element. And an optical coordinate position input device provided with a light beam selection member. In order to solve the above first technical problem, a plurality of optical semiconductor elements having a light emitting or light receiving function in which the light beam selecting member of the present invention is fixed to a substrate with a terminal protruding from the bottom of the main body are provided on the substrate. In this embodiment, a pair of shapes extending in the column direction of the optical semiconductor element array can be combined in pairs, and the elements in a single row can be integrally mounted and elastic on the bottom of the main body of each element. And a light shielding holder for an optical semiconductor element having a pressing portion to be in contact, a housing portion for accommodating the main body of each element, and a light transmission hole located at the front side of each element.

The light shielding holder has a light shielding holder of an optical semiconductor element provided with an enlarged portion that defines an incidence direction of light having a diameter larger than a diameter of an inlet of the light transmitting hole in the path of the light transmitting hole. In order to solve the above second technical problem, the light selecting member of the present invention includes an optical semiconductor element having a terminal which protrudes from the bottom of the main body to a substrate and which has a light emitting or light receiving function. It is possible to integrally reduce the body, and a leg portion for elastically supporting the bottom of the main body of the device, an accommodating part for accommodating the main body of the device, and a light transmitting hole located at the front side of the device. A light shielding holder for an optical semiconductor element is provided.

In order to solve the above third technical problem, among the devices in which the light selecting member of the present invention prepares various types of beams having different diameters of the light-transmitting window and has a predetermined diameter among them, It has a structure which adjusts the output of an element in the optical array which only covers a large output signal and makes the quantity of light between each element match. In order to solve the above fourth technical problem, the light beam selection member of the present invention includes a light emitting element string and a light receiving element string corresponding thereto, and a plurality of light emitting element strings are provided on the front side of the display surface of the display device between the light emitting element and the light receiving element. A coordinate detection apparatus of a light detection method for forming a light path intersecting the light path, detecting a position at which the light path is blocked, specifying a coordinate position on the display surface, and inputting the position. And a light shielding member for preventing intrusion of light to the light receiving element side in the corner portion.

The above technical means function as follows. The light beam emitted by the light emitting element is introduced only to the light receiving element corresponding to the light beam selection member.

Means for solving the first technical problem are made by combining a pair of shapes installed in the column direction of the optical semiconductor element array, and these thermal elements can be integrally mounted and the elements of each element A light shield holder having a pressing unit elastically contacting the bottom of the main body, a housing unit accommodating the main body of each element, and a light transmission hole located in front of each element is adopted. It functions to have a function of a light shielding plate used in the coordinate input device and a function of securing a position of a thermal optical semiconductor element with respect to a substrate.

Means for solving the second technical problem include: a leg portion capable of integrally mounting an optical semiconductor element and elastically supporting the bottom of the main body of the element, a housing portion accommodating the main body, and a front side of the element. A light shield holder having a light transmitting hole positioned at the position is employed, and the light shield holder functions to have both a function of a light shielding plate used in a conventional coordinate input device and a function of securing positioning of the optical semiconductor element to a substrate. do.

Means for solving the third technical problem is to prepare a variety of different diameters of the through-hole window, and to cover each of the elements having a predetermined diameter among the elements arranged in the optical array only the output signal is large Match the amount of light between the devices.

Means for solving the fourth technical problem is a light receiving element in which the columns of a plurality of light emitting elements and the projected light are opposed to each other so as to receive light, the optical paths are arranged in a matrix shape, and the position on which the light paths are blocked is detected and coordinates on the display surface are detected. In a light detection coordinate input device that specifies a position and inputs the specified position to a computer side, a light shielding member is provided at a corner of a frame adjacent to the light receiving element to block light incident from a corner of the infrared filter. The photoreceptor does not misdetect near this corner. Embodiments of the present invention will be described in detail below with reference to FIGS. 1 to 11.

FIG. 1 is a first embodiment of the present invention, and is a cross-sectional view showing a light blocking holder as a light beam selection member, FIG. 2 is a partial perspective view thereof, 5 is a light receiving element, 7 is a substrate, and 112 is a whole of a light blocking holder. 13 is its lower form, 14 its upper form and 15 is solder

In these drawings, the shading holder 112 formed of polyacetal or the like is provided with a lower mold 13 and an upper mold (13) extending in the column direction (arrow C direction in FIG. 2) of the light receiving elements 5 arranged in a row. 14) in combination, and as shown in FIG. 2, the plurality of light-receiving elements 5 are stored in a columnar shape at the rear of the lower die 13, and then the upper portion of the lower die 13 is placed on the step 13a. By strongly fitting the protruding portion 14a on the mold 14 side, these thermal light receiving elements 5 can be integrally mounted while ensuring light shielding properties. In the state where the light-receiving element 5 is shielded in this manner, the light transmitting hole 112a is provided at the tip of the light blocking holder 112, and the entrance of the light transmitting hole 112 is located behind the transmission hole 112a. An incidence direction regulating chamber 112b as an enlarged portion having a diameter larger than that of the negative portion is formed, and a receiving portion 112C is formed behind the incidence direction regulating chamber 112b, respectively, and the main body of the light receiving element 5 ( 5a is accommodated in the accommodating part 112c, and the pressing part 13b which protrudes in the lower die 13 is made to elastically contact the bottom face of the main body 5a. The light receiving element 5 mounted on the side light-shielding holder 112 has the bottom surface of the main body 5a pressed against the pressing portion 13b, so that when the lead 15 is soldered to the substrate 7, the substrate ( Since the height accuracy with respect to 7) is secured and is enclosed in the accommodating part 112c in which the perpendicularity with the board | substrate 7 is maintained, the perpendicularity with respect to the board | substrate 7 of the main body 5a is also necessarily secured and positioned. Precision is significantly improved.

In addition, the light transmitting hole 112a positioned in front of the main body 5a of the light receiving element 5 has a predetermined area and depth and acts the same as the light transmitting hole of the light shielding plate used in the conventional coordinate input device. You can make it unnecessary.

As such, the positioning accuracy of the light receiving elements 5 arranged in the thermal shape with respect to the substrate 7 is automatically secured only by shielding the light shielding holder 112, thereby not only preventing malfunction but also simplifying the assembly operation. We can plan.

On the other hand, the incidence direction regulating chamber 112b formed as an enlarged portion between the light transmitting hole 112a and the accommodating portion 112c forms a larger space than the incidence hole 112a. Among the light incident on the light transmitting hole 112a by (), that is undesirable, that is, light incident from other than the light emitting element paired with the light receiving element 5 in the accommodating portion 112c is the light receiving element 5 The light receiving portion at the tip of the main body 5a is not reached. Therefore, the light received by the light receiving portion of the light receiving element 5 is subject to strict constraints on the incident direction thereof, so that only incident light from the predetermined light emitting element can be received and the malfunction can be more reliably prevented. In addition, if the wall surface of the incident direction regulating chamber 112b is matte-processed, the effect which removes undesirable incident light further increases.

In the above embodiment, the case where the pressing portion 13b is provided only in the lower type 13 of the light blocking holder 112 is described. However, the pressing portion may be provided in the upper type 14. In addition, in the above embodiment, the light blocking holder 112 is divided into two parts by the lower type 13 and the upper type 14 to be formed separately, so as to form a pair, for example, a hinge having a light transmitting hole 112a type. Hinge) section, the lower section 13 and the upper section 14 are integrally formed through the hinge section, and the optical element is mounted at a predetermined position, and then bent through the hinge section. May be fitted to form a light shielding holder containing the optical element. In addition, the light-transmitting hole 112a having the entrance direction control chamber 112b is formed as a separate body as an adapter, and is formed on the front surface of the light blocking holder formed by the pair of shapes, that is, on the front surface of the light receiving unit 5 of the light receiving element 5. You can also install.

3 is a second embodiment of the present invention, a cross-sectional view showing a light blocking holder as a light beam selection member, FIG. 4 is a cross-sectional view showing another embodiment of FIG. 3, FIG. 5 is a cross-sectional view showing another embodiment of FIG. FIG. 6 is a cross-sectional view showing still another embodiment of FIG. 5, and the same reference numerals are used to refer to the same parts as those in the prior art, the first and second drawings, and the detailed description thereof will be omitted.

In the drawing, reference numeral 5 denotes a light receiving element, 7 a substrate, 212 a light shield holder, and 15 a solder. In FIG. 3, the shading holder 212 formed of polyacetal or the like is hinge-coupled to form a pair of opaque half bodies having an appropriate opening and closing property and at the same time, which are opened to mount the light receiving element 5. After closing both the bodies and engaging each other, the light receiving element 5 can be integrally mounted. In this way, in the state where the light receiving element 5 is shielded, the leg portion 212a at the rear end of the light blocking holder 212 elastically supports the bottom angled portion of the main body 5a of the light receiving element 5. Moreover, the accommodating part 212b of the holder 212 accommodates the main body 5a of the element 5, and also the light transmission hole 212c in the front side (front side of the light receiving part) of the main body 5a of the element 5. ) Is formed. That is, in the light-receiving element 5 attenuated by the light shield holder 212, since the bottom angled portion of the main body 5a elastically contacts the leg portion 212a, the terminal 5b is soldered to the substrate 7 ( 15) the height of the body 5a is secured to the substrate 7 in the housing portion 212b where the height accuracy of the substrate 7 is secured and the perpendicularity to the substrate 7 is maintained. Orthogonality is also inevitably secured, and the positioning accuracy is remarkably improved. In addition, the light transmission hole 212c located in the front side of the main body 5a of the light receiving element 5 has a predetermined area and depth so that only incident light from the light emitting element paired with the element 5 can be received. The light shielding plate used for the conventional coordinate input device becomes unnecessary. In this embodiment, it is also possible to form the completed mold by integral molding in addition to the hinge coupling, and to wear from the top. In the embodiment of FIG. 4, the area of the light transmitting hole 12c 'of the light blocking holder 12 is different from that of the above embodiment, and thus, when forming the light blocking holder 212, the light transmitting hole 212c' The amount of light can be arbitrarily adjusted by changing the area and the length.

In the embodiment of Fig. 5, the incident direction regulating chamber 212b formed by forming a wider space than the light transmission hole 212c between the light transmission light 212c and the accommodating portion 212b is provided. It is different from the example. That is, in the light incident on the light transmission hole 212c by this incidence direction regulating chamber 212d, the incidence direction is undesirable, that is, a light emitting element paired with the light receiving element 5 in the accommodating portion 212b. It is designed so that light incident from the other side is removed and does not reach the light receiving portion at the tip of the main body 5a of the light receiving element 5. Therefore, the light received at the light receiving portion of the light receiving element 5 is severely restricted in the incidence direction, and only incident light from the predetermined light emitting element can be received, thereby making it possible to more reliably prevent malfunction. In this example, unlike the previous two examples, the finished mold cannot be formed by integral molding, and a predetermined finished mold can be obtained by hinge bonding, or by dividing into two by tight fitting. If the wall surface of the incident direction regulating chamber 212b is made matt, the effect of removing undesirable incident light is further increased.

The Fresnel lens 214 is attenuated in the light transmission hole 212c 'of the light shielding holder 212 used in the light emitting element 4 of the embodiment of FIG. The directivity of the light beam projected from the light emitting portion at the tip of the main body 4a of 4) is ensured.

7 is a third embodiment of the present invention, a cross-sectional view showing a light shielding holder as a light beam selection member, and FIG. 8 is a perspective view of FIG. 7, and the parts described in the prior art and FIGS. The same reference numerals are used for the description and detailed description thereof is omitted.

In the figure, 31 is an optical array, and the optical area 31 is provided with elements 33a, 33b, 33c, etc., such as LEDs or phototransistors, in a line at a predetermined interval on the substrate 7. If the output signal of the elements 33a, 33b, 33c, is 33a, and is 33b, 33c, then the amount of light in the elements 33a, 33b is controlled to be equal to 33c, then all the elements 33a, 33b, 33c ... Since the output signal of is adjusted to match, the caps 35a, 35b, which are perforated with the perforation windows 34a, 34b, on the ceiling surface as the light quantity control means, correspond to the elements 33a, 33b. Moreover, the diameters of the perforation windows 34a, 34b ... of these caps 35a, 35b ... are different according to a control amount, and the perforation window 34a is smaller than 34b.

When the optical array 31 is implemented in the optical coordinate input device, it is effective to use caps 35a and 35b on the phototransistor side, but the adjustment example can be further increased by using the caps on the LED side as well. 9 is a rear main view of an optical coordinate position input device showing the arrangement of a light shielding plate which is a fourth embodiment of the present invention and a light beam selection member, FIG. 10 is a rear view of the main part showing the whole of FIG. 9, and FIG. It is a principal side view which shows the formation structure, The part demonstrated in the prior art example, FIGS. 1-8, and the part of the same function are shown with the same code | symbol, and detailed description is abbreviate | omitted.

9 and 10, end portions 48b and 48c of the light shielding plate 48 which are mounted on the frame 1 on the front side of the light receiving element 5 extend on both sides as the light blocking member 11. The light emitting element 4 side of the end 48b is bent along the opening 2 to a position substantially adjacent to the light emitting element 4 as shown in FIG. 1 to act as a light shielding member and to form a corner portion of the frame 1 ( Intrusion of light from 1a) is prevented. Moreover, the edge part 48c of the side which the light receiving element 5 adjoins mutually is bent integrally, and the corner part 1a is fully closed. In addition, all the parts which are not especially described are comprised similarly to the said prior art example.

As described above, the end portions 48b and 48c of the light shielding plate 48 are extended to the corner portions 1a and 1b on the side of the opening 2 of the frame 1 so as to act as the light blocking member 11. 5) The intrusion of external light can be prevented. Therefore, light enters the light-receiving element 5 from outside of the predetermined optical path 12, resulting in an unexpected output, which eliminates the possibility of coordinate detection or error. The output corresponding to the pressing point and one-to-one can be obtained.

Although the light shielding plate 48 which concerns on this embodiment is an example provided in the frame 1 side, it is not necessarily formed only in the frame 1 side as the light shielding member 11 ', for example, as shown in FIG. Similarly, the same effect is provided even when integrally protruding from the back plate 43. For example, the light blocking member is formed by using a signal cable connecting the light emitting elements 4 and the light receiving elements 5 to each other. Alternatively, the corners 1a and 1b may be closed by an elastic body having no light transmitting property to shield light.

According to the first embodiment of the present invention, by adopting a light blocking holder capable of integrally mounting a plurality of light emitting elements or light receiving elements arranged in a line shape, it is possible to easily secure the perpendicularity and height precision of the substrates with respect to the substrate. In addition, when the light-shielding holder is mounted on the light-receiving element array, the light-shielding plate used in the conventional coordinate input device becomes unnecessary, and thus workability and reliability can be greatly improved. According to the second embodiment of the present invention, by adopting a light shielding holder which can be mounted on a light emitting element or a light receiving element and integrally mounts these optical semiconductor elements, the perpendicularity and height accuracy of the element can be easily ensured. Malfunction can be reliably prevented, and when the light blocking holder is fitted to each light receiving element, the light shielding plate used in the conventional coordinate input device can be omitted.

According to the third embodiment of the present invention, since the performance of each element installed in the optical array is adjusted by the light emitting window of the lab, the threshold level can be easily set so that signal processing can be simplified. No troublesome work called exchanging is necessary at all.

According to the fourth embodiment of the present invention, a predetermined light path is provided by installing a light blocking member that prevents unnecessary light from entering behind the light blocking plate and enters the light receiving element in the corner portion of the frame in which the light blocking plate has not been conventionally provided. Since only the coarse light can be detected, there is no fear of detection and error, and it is possible to provide a coordinate input device that can sufficiently cope with the enlargement of the operation region.

Claims (6)

Optical coordinate input, characterized in that a light beam selection member is provided having a plurality of arrays in which the light emitting element 14 and the light receiving element 5 corresponding to each other are arranged in a row, and receive only the light rays from the light emitting element to the light receiving element. Device. The optical semiconductor device (4, 5) according to claim 1, wherein the light selection selector causes the terminal (14a) protruding from the bottom of the main body to be provided on a substrate, and a plurality of optical semiconductor elements (4, 5) having a light emitting or light receiving function are arranged in parallel on the substrate. In this configuration, the light-selective member is formed by combining a pair of shapes extending in the column direction of the optical semiconductor element array, and the elements of the column shape can be integrally wound, and the pressing portion 13a which is pointed at the bottom of the main body of each element and And a light blocking holder 112 of an optical semiconductor device having an accommodating part 112c for accommodating a body of each device and a light transmitting layer 112a located on the front side of each device. Position input device The light blocking holder of an optical semiconductor device according to claim 2, wherein an enlarged portion (112b) for regulating the incident direction of light formed to a diameter larger than the diameter of the inlet portion of the light transmission hole (112a) is provided in the path of the light transmission hole ( Optical coordinate position input device, characterized in that consisting of. The optical semiconductor device according to claim 1, wherein the light selecting member fixedly mounts the terminal protruding from the bottom surface of the main body to the substrate and includes the optical semiconductor devices 4 and 5 having light emitting or light receiving functions. And a leg portion for elastically supporting the bottom of the main body of the element, an accommodating portion 112c for accommodating the main body of the element, and an optical transmission hole 112a located on the front side of the element. Optical coordinate position input device characterized in that the shading holder of 2. The element according to claim 1, wherein the light selecting member prepares several types of beams having different diameters of the light-transmitting window, and among those elements having a predetermined diameter among the elements arranged in an optical array in a row, only the large output signal (35a) Optical coordinate position input device, characterized in that the output of the device is adjusted by covering an optical arrangement in which the amount of light between the devices is matched with the cover (35b). 2. The light emitting device of claim 1, further comprising a plurality of light emitting element strings and corresponding light receiving element strings, wherein a plurality of intersecting light paths are formed between the light emitting element and the light receiving element on the front side of the display surface of the display device, and the light path is blocked. In the light-detecting coordinate input device for detecting a position to be detected and specifying a coordinate position on the display surface, and inputting the position, the light beam selection member is placed on the light receiving element side at least at the corner of the frame 1 adjacent to the light receiving element string. Optical coordinate position input device, characterized in that the light-shielding member (11, 11 ') for preventing the intrusion of light.

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