JPS6362459A - Optical device - Google Patents

Abstract

PURPOSE:To remarkably improve the operability in adjusting the optical state by displacing angularly a reflecting member unidirectionally at the adjustment of the optical state of a photodetector and facing the adjusting member having an optical pattern with the photodetector. CONSTITUTION:An electronic blackboard 21 consists of a light source 32 such as a fluorescent light, a photoelectric transducer 23, an angle adjusting unit 25 including a lens 24 and a copying machine (not shown). In adjusting the optical state, a support plate 33 of a mirror 33 is moved clockwise and screws 45, 46 are tightened while they reach the end limit of guide long holes 43, 44. In this case, the support plate 34 is made nearly in parallel with a rear plate 29 and an adjusting reference sheet 11 arranged to an end face 30a facing the angle adjusting unit 25 of a frame 30 appears. The adjusting reference sheet 11 is used to apply various adjustments to the angle adjusting unit 25.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a prior art device suitably used in an image reading VC device called a so-called electronic blackboard.

PRIOR TECHNOLOGY An image reading device known as a so-called electronic blackboard, etc. In i, light from a light source is irradiated onto a sheet on which a manuscript to be read is written, and the manuscript image is guided by a reflecting mirror and reflected, and is imaged on a charge conversion element through a lens. It is configured. In such an image reading position, a clear image cannot be obtained unless the reflecting mirror, lens, and photoelectric conversion element (hereinafter abbreviated as CCD) are arranged on a straight line. That is, the image becomes clearest when the likely optical path from the reflecting mirror matches the optical axis of the lens and CCD, and the image becomes unclear as the optical axis deviates from the optical path.

Further, unless the imaging condition is good on the CCD, that is, if the image is not in focus, a clear image cannot be obtained. For this reason, in the past, Wj4 was applied to the sheet body.
``I installed one member and adjusted the optical condition as @mentioned.

Figure vJ17 is a typical prior art cross-sectional view.

The VC device for reading an image includes a sheet body 2 on which a document to be read is written, and a running roller 19 on which the sheet body 2 is stretched.
, 20, angle adjustment including a light source 3 that illuminates the sheet body 2, a reflector 4 that reflects the light irradiated on the sheet body 2, a lens 5 that receives the light from the reflection 1a4, and a CCD G 7 These are surrounded by a back plate 8 and two 7-frame frames 9g10.

The manuscript written on the sheet body 2 is irradiated by the light source 3, and is reflected by the lens 5 and C of the angle adjustment unit 7 via the reflecting mirror 4.
Sent to CDG. The CCD 6 converts the received light into an electrical signal and outputs it to a copy space (not shown). This allows the copying device to output the manuscript written on the sheet body 2 onto recording paper.

FIG. 18 is a top view of the ii1 leveling reference sheet 11 used for adjusting the optical state of the image reading device 1.

i1! The alignment reference sheet 11 is made of the same material as the sheet body 2, and has vertical reading range adjustment lines for the CCD 6 (hereinafter referred to as P
12t13 (abbreviated as t51g maintenance line) is drawn,
In the central part in the left-right direction in FIG. 18, there are three left-right and twisted '14I! ji line (hereinafter abbreviated as second adjustment line)> 14.
15.16 are drawn. In addition, the second m maintenance line 14,
On the left and right sides of Figure 18 of 16, there are two focal points of 51g silk 17.
18 is depicted.

Such an adjustment reference sheet 11 is used to adjust the CC of the sheet body 2.
D6 is pasted at position A (see Fig. 17) where the original is to be read.

Therefore, CCD G receives light from, for example, line 12. The user can adjust the vertical reading range of the light sheet body 2 read by the CCD 6.

Similarly, second adjustment lines 14, 15 . IG adjusts the horizontal reading position of the sheet body 2 to be read by the CCD 6 and the twist about the optical axis.
Focusing stripes 17.18 give focus, 14! ! 〒
can become.

Problems to be Solved by the Invention In the prior art as described above, when adjusting the optical state as described above, the adjustment base sheet 11 is attached to the sheet body 2, so that it is difficult to adjust the optical state by attaching the adjustment base sheet 11 to the sheet body 2. roller 1
9 and 20 are placed at both ends of the 7-frame frame 9.
, 10, and after the adjustment reference sheet 11 is attached to the sheet body 2, the sheet body 2 is attached to the 7-frame frames 9, 10 to perform the optical adjustment. .

Furthermore, after the adjustment is completed, if the adjustment reference sheet 11 remains attached to the sheet body 2, the adjustment reference sheet 11 will interfere with the document reading operation of the image reading VC device, so the adjustment reference sheet 11 must be removed. Therefore, the sheet body 2 must be removed and installed again.

Furthermore, in the past, 31 adjustment jigs were required for each 3!1 adjustment work for each optical adjustment, and the adjuster had to carry the adjustment jigs at all times, making the adjustment work difficult. It was very complicated.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and to provide an optical device that can significantly improve the ease of rubbing when adjusting the optical state.

Means for Solving the Problems The present invention includes a light source, a subject irradiated with light from the light source,
An optical device including a reflecting member that reflects light reflected from a subject and a light receiving element into which light from the reflecting member is incident, the reflecting member being arranged around an axis perpendicular to an optical axis from the reflecting member to the light receiving element. When adjusting the optical state of the light-receiving element, the reflecting member is angularly displaced in one direction, and a predetermined point provided on the extension line of the optical axis on the opposite side of the light-receiving element with respect to the reflecting member is adjusted. s! with an optical pattern 4. An optical device characterized in that a 4-alignment member faces the light-receiving element, and after 11-alignment, the reflecting member is angularly displaced in the opposite direction so that the reflected light from the directly-aligned subject is incident on the light-receiving element. be.

Function The optical device according to the present invention basically operates as follows. That is, light from the light source is irradiated onto the subject, the reflection member reflects the light reflected from the subject, and the reflected light from the reflection member is incident on the light receiving element.

According to the present invention, when adjusting the optical state of such an optical device, the reflecting member can be angularly displaced about an axis perpendicular to the optical axis extending from the reflecting member to the light receiving element. Therefore, regarding the reflecting member, the adjusting member provided 11 vcm above the optical axis on the opposite side to the light receiving element can be made to face the light receiving element, and thereby,
The light receiving element reads the predetermined optical pattern of the i5!19 member, and the optical state of the optical device according to the present invention can be adjusted.

Also, after adjustment, il! ! By angularly displacing the reflecting member while the regular metal member is still attached, the reflected light from the object can be made to enter the light receiving element.

Embodiment FIG. 1 is a simplified sectional view of a so-called electronic blackboard 21, which is a prior art device according to an embodiment of the present invention.

The electronic blackboard 21 basically includes a light source 32 such as a fluorescent lamp,
For example, a CCD (CI+argeCoupl) receives light from the light source 32 and converts it into an electrical signal corresponding to the amount of received light.
A photoelectric conversion element (hereinafter abbreviated as CCD) 23 realized by a device such as edD eviee) and a light source 32
It includes an angle adjustment unit 25 including a lens 24 for focusing light from the CCD 23 on the CCD 23, and a copying device (not shown) that performs a copying operation in response to electrical signals from the CCD 23.

These are a pair of right cylindrical running rollers 226, 27 having rotational axes parallel to each other, and these running rollers 2G, 27.
an endless sheet body 28 that is stretched around the sheet body 28; a back plate 29 provided parallel to the sheet body 28;
and a 7-frame frame 30 attached to both ends of the back plate 29,
It is surrounded by 31. The sheet body 28 is composed of, for example, a polyester film laminated with a 7-base resin or the like. Further, near the light source 32, there is provided a reflection m33 that guides the original image on the sheet body 28.

Front fil of sheet body 24 (lower ggl in PtS1 figure)
The document written on the surface of the C0D is driven to the rear side by the drive of the running rollers 2G and 27, and is sent to the C0D through the light source 32.
The image is formed on 23. The CCD 23 converts the received light into an electrical signal and outputs it to the copying device.

As a result, the copying device copies the manuscript written on the sheet body 28 onto the recording paper.

FIG. 2 is a plan view of the vicinity of the reflection mirror 33 of the electronic whiteboard 21, FIG. 3 is a front view of the vicinity of the reflection mirror 33 with the sheet body 28 removed, and FIG. 4 is a perspective view thereof.

The reflection 1fi33 is the support plate 3 disposed on the upper side in FIG.
4, and the support plate 34 has a pair of hinges 35, which are provided at a constant interval in the vertical direction of the Pt53 figure.
3G to the back plate 29. As a result, the support plate 34 can be freely angularly displaced around the hinges 35 and 36. Also, hinges 35 at both longitudinal ends of the support plate 34
, 36 are formed with protrusions 39, 40 having screw holes 37, 38.

On the other hand, the hinges 35, 3G
Centering on the hinge 735.3G and the protrusion 39.40
Guide elongated holes 43 and 44 are formed along a virtual arc whose radius is the distance @RI. The support plate 34 is fixed at an arbitrary position by interposing screws 45.4G in the guide holes 43.44 and screwing them into the screw holes 37.38.

That is, when the screws 45.4G are loosened, the support plate 34 can be angularly displaced within the range provided by the guide slots 43 and 44, and by tightening the screws 45.4G at any position, is fixed.

Therefore, by angularly displacing the support plate 34 clockwise in FIG. 34 is approximately parallel to the back plate 29. Hereinafter, this position will be referred to as adjustment position A. Also, the position where the support plate 34 is angularly displaced counterclockwise in FIG. It is called usage position B.

By the way, the angle of the frame 30 is 1! An adjustment reference unit 11 shown in FIG.
If the adjustment reference sheet 11 is fixed at the angle g adjustment unit 25 (see Fig. 4), when the support plate 34 is fixed at the use position jii'B,
As shown in FIG. 1, the intersection point P between the optical axis X parallel to the longitudinal direction of the sheet body 28 and the reflecting mirror 33
1 along the optical axis X! 1 and the distance between the intersection P and the sheet body 28! The guide elongated holes 43, 44 and other structures may be set in advance so that the numbers 2 and 2 are equal to each other.

FIG. 5 is a perspective view of the angle adjustment unit 25.

The angle adjustment unit 25 includes a CCD 23. Ren r24,
It is composed of a lens barrel 47 to which the lens 24 is attached, a CCD board 48 to which the CCD 23 is attached, a lens holder 49 which integrally fixes the lens barrel 47 and the CCD board 48, and a mounting member 50 to which the four lens holders are attached.

The mounting member 50 has a substantially triangular prism-like appearance with the −a side missing, and the respective ends of the rectangular bottom plate 51 and back plate 52 are arranged vertically, and the bottom plate 51 and the back plate 52 are arranged vertically in the upper and lower portions of FIG. Approximately triangular plate-shaped support plates 53 and 54 are arranged at both ends in the direction, and these bottom plate 51, back plate 52, and support plates 53.
54 are integrally constructed.

The back plate 52 of such a mounting member 5() has mirror pullers 47,
The lens holder 49 and the CCD board 48 are attached in this order from the left side in FIG.

Further, a lens fixing screw 5G is attached near the longitudinal center of the end surface of the back plate 52 opposite to the end surface that abuts the bottom plate 51. When this lens fixing screw 5G is heated, the lens barrel 47 becomes freely displaceable in the direction of arrow C in FIG. Can be fixed in position. As a result, the focal point i of the lens 24 and the CCD 23 is
i! Can perform one set.

The mounting member 50 having such a configuration is supported by a mounting piece 53 (see FIG. 1) attached to the 1t29 so as to be freely angularly displaceable about the axis of rotation shown in FIG. 1
The axis of rotation in 11j is perpendicular to the optical axis X. f511
21 (in the vertical direction of the page). On the other hand, the bottom plate 51
An angle adjustment screw 57 is attached to the opposite end of the end where the bottom plate 51 and back plate 52 contact, and the shaft portion of this screw 57 is screwed into the attachment piece 58. Therefore, screw 5
When screw 7 is screwed forward, the mounting member 50 is angularly displaced in the direction of arrow E about the rotation axis, and when screw 57 is screwed back, it is angularly displaced in the direction opposite to arrow E. . As a result, the horizontal reading position adjustment of the CCD 23, which will be described later, is performed.

FIG. 6 is a front view of the CCD board 48. CCD board 4
Reference numeral 8 has a substantially rectangular plate shape, and a CCD 23 is attached to the back t& side of the paper in FIG. 6 near the center in the longitudinal direction. In Figure 6 of CCD 23 and near both ends of the lower side,
Elongated holes 59 and 6 into which the shaft of a hexagonal nut to be described later is inserted.
0 is formed.

The longitudinal direction of these two elongated holes 59 and 60 extends in the left-right direction in FIG. Further, a long hole 61 having its longitudinal direction in the vertical direction is formed near the top of the long hole 60 in the fjSG diagram, and a screw 62 for fixing the CCD board 48 to the lens holder 49 is inserted into this long hole 61. inserted.

Figure 7 is a front view of the hexagonal nut 63 for adjusting the reading range, and Figure 8 is a side view thereof. This hexagonal nut 63 consists of a cylindrical shaft portion G4 and a hexagonal columnar head 65. A through hole 66 passing through in the axial direction is formed. Note that the diameter R3 of the shaft portion 64 is
The length is selected to be approximately equal to the length of the elongated hole 59 of the substrate 48 in the vertical direction in FIG.

FIG. 9 is a sectional view of the vicinity of the elongated hole 59 of the CCD substrate 48. A CCD board 48 is located on the left side of the lens holder 49 in FIG.
is arranged, and a hexagonal nut 63 is inserted into the elongated hole 59 as described above.
The shaft portion 64 of is inserted.

In this state, the screw 67 is inserted into the through hole 6G of the hexagonal nut 63, and screwed into the screw hole 79 provided in the lens hole 49.Thereby, the hexagonal nut 63 is inserted into the lens holder 49, with the h-hole 67 centered. It can be mounted with free angular displacement.

*In addition, the CCD board 48 is supported by the lens holder 49 by this hexagonal nut 63 and the screw 62.

FIG. 10 is a perspective view of the lens holder 49.

The lens holder 49 has a through hole 68 for mounting the lens barrel 47 formed in its longitudinal center, and its 17I edge 6
The lens fixing screw 56 is located on the left side end surface of FIG. 10 of 9.
A screw hole 70 is provided into which the screw hole 70 is screwed. Further, at the upper blade side end in FIG. 10, a long hole 72 into which the throat flap 1 for attaching the lens holder 49 to the mounting member 50 is inserted is formed so that its longitudinal direction extends in the left-right direction in FIG. Ru.

On the other hand, 1llll opposite to the long hole 72 of the lens holder 49
A cutout 73 having an opening facing downward in FIG. 10 is provided at the lower end. This notch 73 has the above-mentioned 6
The ring part of the hexagonal nut 74 having the same structure as the square nut 63? 5 is inserted.

FIG. 11 is a sectional view of the vicinity of the hexagonal nut 74 with the CCD board 48 and four lens holders attached to the attachment member 50. The shaft portion 75 of the hexagonal cutter 74 contacts the right end surface 52a of the back plate 52 of the mounting member 50 in FIG. Similar to the hexagonal nut 63 shown in FIG. 9, the hexagonal nut 74 is attached to the back plate 52 by climbing the screw 7G so as to be freely angularly displaceable about the screw 76.

Next, the adjustment of the optical state of the electronic blackboard 21 by the angle g adjusting unit 25 will be explained.

The support plate 34 of the reflecting mirror 33 is fixed at the adjustment position A. As a result, the 51 alignment reference sheet 11 faces the angle adjustment unit 25 as described above. Next, as shown in the first diagram, the onroscope 77 is connected to the CCD 23, and the optical beam irradiated onto the CCD 23 is Statue Oscilloscope 7
Display on 7. Therefore, in this state, the waveform related to the image of the adjustment reference sheet 11 read by the CCD 23 is displayed on the oscilloscope 77. The optical state of the electronic blackboard 21 can be adjusted using the 'I4I4 leveling reference sheet 1 displayed on the onroscope 77 in this way.
Do this while reading the waveform related to 1□.

Adjustment of this optical state is performed by the lens 24 and the CCD 23.
Focus adjustment with C0D23, vertical reading range adjustment of C0D23, horizontal reading position of C0D23 r! i 31 adjustment, C
There are 4 types of CD23 [Yuzu ni t Rene ert'I 4 Sei. Hereinafter, each of the 14-order procedures will be explained in accordance with this order.

FIG. 12 is a waveform diagram displayed on the oscilloscope 77 during focus adjustment. When adjusting the focus, the angle 'I4!
! ! ■Adjust the screw 57 to slightly angularly displace the angle adjustment unit 25 around the rotation axis #ilD (see diagram m5), and
For example, the reading range of the CD 23 is the grass cutting sheet 11 for adjustment.
(see FIG. 18). (Note that each pixel of C0D23 is arranged in #a pear shape), so the reading range of CCD23 is
For example, 1! ! It becomes linear like the focus adjustment position F on the alignment reference sheet 11. ) In this state, C0D23 is the focal point, iq alignment ii1? F
For example, if reading is performed sequentially from the top to the bottom of FIG. 18, the oscilloscope 77 will see the image shown in FIG. 12! ! The waveform is displayed. That is, focus, α adjustment position Fl
:Come, fjS1 adjustment line 12 and focal point r14 fringe 1
7 is white, so the oscilloscope 77 displays a high-level waveform 78 called the so-called own level. In the focusing box 17, the upper stripes in FIG. 18 are dense and thin lines, and the lower stripes are? The degrees are sparse and thick lines are drawn. Therefore, the CCD 23 is the focal point v! When the four-regular fringes 17 are read from above, a waveform 79 with a small amplitude appears first, and then a waveform 8oIJt whose amplitude is about the same as the own level 78 appears. Next, a white level 81 is displayed between the focus adjustment boxes 17 and 18, and in the focus adjustment box 18, the same waveform as the focus and α adjustment stripes 17 is obtained.

The level HIt of the waveform 80 of the waveform obtained in this way
, l/nX 24 is determined by the focal position of the FCOD 23, and is known to be highest in the so-called focused state. Therefore, the lens fixing screw 5
7, keeping the lens barrel 47 freely displaceable in the optical axis direction, and adjusting the displacement of the lens barrel 47 in the optical axis direction while visually observing the level H of the waveform 80 of the on-loss hoop 77, the focal point can be adjusted. You can make a thousand adjustments.

Next, the adjustment of the downward reading range of the CCD 23 will be explained. When adjusting the reading range in the vertical direction, adjust the angle adjustment screw 57 so that the reading position of the CCD 23 is at the second position.
Adjustment line 14.15.16 and focus adjustment wheel 17.18
Vertical reading range located between v4! ! position Wi (hereinafter abbreviated as vertical adjustment position) G.

In this state, when the CCD 23 reads the adjustment reference sheet 11, the oscilloscope 77 displays a waveform as shown in FIG. 13(1). That is, CCD23 is plSl
1 I! ! Reading starts from the upper part of the i line 12 in FIG. 18, and immediately after starting reading, the 13th!1st line 12 is read. Therefore, the waveform on the oscilloscope 77 is
At first, it rose to the white level, and then tjSlil!
A descending waveform a′ of the straight line 12 and the straight line 12 appears. After that, the white level is maintained until the CCD 23 reads the first adjustment line 12, and if the first adjustment line 13 is read,
The falling waveform b' appears again.

Therefore, Figure 13 (1) appearing on the oscilloscope 77
In the illustrated waveform, the distance between the two falling waveforms 1°b' corresponds to the distance between the two first adjustment lines 12 and 13 on the adjustment reference sheet 11.

#S13 FIG. 2 is a waveform diagram of the reference pulse S created by another electronic circuit. The reference pulse S is CCD2
It is built at the reference position of the vertical reading range of 3,
The distance between the rising edge and the falling edge b is chosen to be equal to the distance between the two falling waveforms 1 and 51 in the waveform shown in FIG. 13(1). Therefore, if we consider the rising waveform a or the falling waveform of the reference pulse S, the falling edge a' of the waveform shown in FIG. It is possible to detect the deviation of the reading range of the upper and lower blade directions from the reference position, and to adjust this by 14 times.

FIG. 14 is a plan view of the vicinity of the elongated hole 59 of the CCD substrate 48. If the hexagonal nut 63 is angularly displaced in the direction of the arrow, 6
As mentioned above, the square corner 7 63 is in an eccentric position, and the screw 6
Since it is attached to the lens holder 49 by 7,
The CCD board 48 is displaced downward in FIG. In this case, it is assumed that the screw 62 is installed later. On the other hand, if the hexagonal nut 63 is angularly displaced in the direction of arrow J, the CCD board 48
teeth! @Figure 6 Displaces to the upper blade side.

Therefore, the vertical reading range adjustment of C0D23 is as follows:
13 (1) and (2) displayed on the on-loss hoop 77
) is realized by detecting the deviation of the reading range from the reference position in the vertical direction and angularly displacing the hexagonal napht 63 as described above. Adjust the hexagonal nut 63 to correct the above-mentioned deviation (if the screw 62
screw on. As a result, the CCD board 48 is fixed at a normal position.

Next, the horizontal reading position adjustment of C0D23 will be explained.

This 3! I adjustment is performed using an angle adjusting screw 57.

That is, by angularly displacing this screw 57, the reading position of the CCD 23 is set to the second il! l Cleaning line 14, 15゜16
519 to match. To do this, visually observe the oscilloscope 77 and angularly displace the screw 57 until a waveform as shown in FIG. 15(1) is displayed. This is because the reading position of the CCD 23 is fm2i1! If they match the i adjustment lines 14, 15, and 16, the three 2'I4 adjustment lines 14 to 1G are displayed at the black level, that is, the low level, and for the other fa k&, the white level,
In other words, it is displayed at a high level, and the result is as shown in Figure 15 (
1) The waveform shown in the figure can be obtained.

Therefore, in the end, the oscilloscope 77 is
) If the waveform shown in the figure is displayed, it can be said that the optical state of C0D23 is normal.
When the reading position of 23 is inclined with respect to the vertical direction of the second adjustment fin, that is, when it is twisted with respect to the optical axis, the oscilloscope 77 has a reading position of m2y4 as shown in FIG. 15(2). The waveform that read only the maintenance line 15 is displayed, and 5! ! need to be adjusted.

FIG. 16 is a front view of the vicinity of the notch 73 of the lens holder 49. Since the hexagonal nut 74 is attached to the back plate 52 of the mounting member 50 by the screw 76 at an eccentric position as described above, for example, in FIG.
When the square nut 74 is angularly displaced, the lens holder 49 is angularly displaced clockwise in FIG. 10 about the through hole 68. On the other hand, since the CCD board 48 is attached to the four lens holders as described above, it is displaced together with the lens holder 49. Therefore, the CCD 23 attached to the COD board 4S is angularly displaced, and the reading position of the CCD 23 is also displaced.

The waveform shown in FIG. 15 (2) shows that the white level is
A black level corresponding to the second pg line 15, that is, a single falling low level is formed.

Therefore, as mentioned above, the hexagonal nut 74
4, a waveform as shown in FIG. 15(1) is obtained, and the reading position of C0D23 and the second adjustment fin 14,
5.16, the optical state of the CCD 23 becomes normal.

In the above manner, g* of the optical state of the electronic blackboard 21 is determined, and after the adjustment is completed, the support plate 34 on which the reflection t/1t33 is supported is angularly displaced in the counterclockwise direction in FIG. The usage position is fixed at IWB. As a result, the electronic whiteboard 21 returns to its normal usage state.

Therefore, according to this embodiment, the support @34 is first adjusted to the adjustment part r! If it is fixed to the IA, the adjustment reference sheet 11 is attached to the frame frame 30 in advance, so electronic:! %
Preparations for adjusting the optical state of @21 are now complete. Therefore, as in the past, each time an adjustment is made, r! 4. It is not necessary to attach or remove the sheet 11 according to the method of use, and it is not necessary to attach or remove the sheet 11 to
Do not perform work to remove the frame from the frame 30° 31 (g adjustment work is performed).

Effects According to the present invention as described above, the optical Vcr according to the present invention
When adjusting the optical state of li,
By angularly displacing the reflecting member, the adjusting member provided on the opposite side of the light receiving element with respect to the reflecting member can be made to face the light receiving element. This allows optical adjustment of the optical device. Therefore, the adjustment work is greatly simplified.

[Brief Description of the Drawings] Fig. 1 is a simplified sectional view of the electronic whiteboard 21, Fig. 2 is a plan view of the vicinity of the reflector 33 of the electronic blackboard 21, and Fig. 3 is a reflection with the sheet body 28 removed. 4 is a front view of the vicinity of wt33, FIG. 4 is a perspective view of the vicinity of reflector 33 with sheet body 28 removed, and FIG. 5 is an angle of 14! ! A perspective view of the unit 25,
6 is a front view of the CCD board 48, FIG. 7 is a front view of the hexagonal nut 63 for adjusting the reading range g, figure f58 is a side view of the hexagonal nut 63 for adjusting the reading range, and FIG.
8 is a cross-sectional view of the vicinity of the elongated hole 59, FIG. 11 is a perspective view of the lens holder, and FIG. 12 is a waveform diagram displayed on the oscilloscope 77 during focus adjustment, FIG. 13 is a waveform diagram displayed on the oscilloscope 77 during vertical reading of the CCD 23 I) range adjustment, and FIG. 14 is a CC
A plan view of the vicinity of the elongated hole 59 of the D board 48, FIG. 15 is C0D.
16 is a waveform diagram displayed on the oscilloscope 77 when adjusting the horizontal reading position i of lens holder 4.
9, a plan view of the vicinity of the notch 73, Pt517 is a diagram for explaining the prior art, and FIG. 18 is a 7I! 4 is a plan view of the standard sheet 11; 11... Adjustment reference sheet, 21... Consultation device,
23-COD, 24---- Ren x:, 25 ・
...Angle 3! l! Ij-knit, 28... Sheet body,
30.31...7 frame frame, 32...light source, 33.
...Reflector, 34...Support plate, 35.36...Hinno's agent Patent attorney Number of strokes Keiichibe Part 3 Figure m4 Figure 5 Figure 6 Prisoner Figure 7 Figure 8 Figure 9 Figure 10 Figure 12 Figure 13 District 215

Claims (1)

[Scope of Claims] An optical device that includes a light source, a subject that is irradiated with light from the light source, a reflective member that reflects light reflected from the subject, and a light receiving element that receives light from the reflective member. The reflecting member is configured to be able to be angularly displaced around an axis perpendicular to the optical axis extending from the reflecting member to the light-receiving element, and when adjusting the optical state of the light-receiving element, the reflecting member is angularly displaced in one direction to prevent reflection. An adjusting member having a predetermined optical pattern provided on an extension line of the optical axis on the opposite side of the light receiving element with respect to the member faces the light receiving element, and after the adjustment is completed, angularly displacing the reflecting member in the opposite direction, An optical device characterized in that the reflected light from the subject is incident on a light receiving element.