JPS62102669A - Position adjusting device for image pickup element - Google Patents

Abstract

PURPOSE:To easily and surely adjust the position of an image pickup element without requiring a special jig by turning an adjusting ring coupled with a slide ring by a screw so as to move the slide ring axially. CONSTITUTION:The camera is selected into the operating state, and the while the reproducing picture of a monitor is observed, an adjusting ring 60 is turned by using a small sizes screw driver or the like from a recess 16 at th upper side of a front panel 10. Thus, the slide ring 70 inhibited for turning by a lock pin 19 is moved smoothly in forward/reverse direction (axial direction) and the image pickup element 30 is adjusted easily to a prescribed flange back. After the end of adjustment, the rollet 62 of an outer face 61 of the adjusting ring 60 and a small sized steel ball 17 of the front panel 10 are engaged elastically to prevent the turning of the adjusting ring 60 and the adjusted state is kept surely.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a position adjustment device for an image sensor of a television camera.

[Summary of the invention]

The present invention inserts an adjustment ring and a slide ring screwed together between a lens mount and an image sensor, rotates the adjustment ring, and moves the slide ring in the axial direction, thereby adjusting the image sensor relative to the lens mount. The position can be adjusted easily and reliably.

[Conventional technology]

A lens used in a television camera (hereinafter simply referred to as a camera) has a reference plane for attachment to the camera housing, that is, the distance between the flange surface of the lens barrel and the imaging plane of the optical image (
7 range pack) etc. are stipulated by the standard. Conventionally, cameras have been designed based on this standard, but in order to obtain high-quality reproduced images, it is necessary to closely match the imaging surface of the image sensor and the imaging surface of the lens. A mechanism for adjusting the relative positions of the elements was prepared in advance.

[Problem that the invention seeks to solve]

There are two types of adjustment mechanisms described above: one that moves the image sensor in the front and back direction, and one that adjusts the lens attachment section. However, conventional adjustment mechanisms all require special tools and have the problem of being difficult to make fine adjustments.

In view of the above, an object of the present invention is to provide an image pickup element position adjustment device that does not require special tools and can perform adjustment easily and reliably.

[Means for solving problems]

The present invention provides an annular adjusting member and an annular moving member that are screwed together between the lens mounting member and the image pickup element, one end of the annular adjusting member is brought into contact with the lens mounting member, and the annular moving member This is an image sensor position adjustment device in which one end of the image sensor is brought into contact with an image sensor section.

[For production]

According to this configuration, by rotating the annular adjustment member, the position of the image pickup element relative to the lens attachment member can be easily and reliably adjusted.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an image sensor position adjustment device according to the present invention will be described below with reference to the drawings.

An embodiment of the present invention and the configuration of its essential parts are shown in FIGS. 1 and 2, respectively.

In both figures, α0 indicates the front header of the light alloy guicast as a whole, and the front face α force of the front header αQ has a substantially rectangular first stage concave portion in order to fit the Lens Machund diagram, which will be described later. (2) is provided, and a recess (2) is provided.
) are provided with four screw holes (6). From the first stage recess (6) to the rear, open the front panel (6) 0
A large-diameter cylindrical surface (to) forming a cylindrical surface is provided, and the upper part of this cylindrical surface (to) is notched to provide a second recess αQ. , is biased by a compression coil spring (not shown), and a part of it forms a large-diameter cylindrical surface (
For example, it protrudes from the left side of 6). Large diameter cylindrical surface (G)
A small-diameter cylindrical surface (to) is provided rearward from the small-diameter cylindrical surface (to), and a locking pin (2) is installed, for example, on the right side of the rear end of this small-diameter cylindrical surface (g). Projections (A) are provided at the upper and lower parts, respectively. Each end 01) of the protrusion □□□ is cut out horizontally.

On the rear surface of the 70-tont A channel CLO, a pair of id pins (A) and (to) are planted at appropriate positions, and both the id pins (A) and the ends of (C) and koji are threaded respectively. will be shot. In addition, front panel CL (] is pack panel,
The housing of the camera is configured by being appropriately combined with a bottom plate, a top plate, etc. (all not shown).

■ indicates the image sensor part as a whole, for example, a charge-coupled device (COD) type image sensor 0υ, a printed wiring board 0■ to which many pins P of the image sensor 0◇ are connected, and a filter holder. It consists of Nine color filters (not shown) are built into the cylindrical portion (B) of the filter holder (B), and a window (B) is provided in the front surface of the cylinder S (B).

The image sensor 0]) and filter holder (G) are connected through the through hole (to) and the screw hole of the case of the image sensor 0 center.
to).

A pair of small-diameter through holes (6) and (6) and a hole and a ring are provided in the filter holder 03 and the image sensor 0η, respectively, and a pair of holes and a ring are provided in the filter holder 03 and the image sensor 0η, respectively, corresponding to the Idobin kan and @ of the front panel αO. A pair of large diameter through holes (9) and (G) are provided in the wiring board (32).These small diameter through holes ←υ~- are engaged with both guide pins (A) and the forceps, respectively. In this state, compression coil springs (B) are loosely fitted into both the guide pins 4 and 2 through the large-diameter through holes of the printed wiring board 02. After that, the ends of both the guide pins 4 and @ (
c) Nuts μs are connected to the wires and the wires, respectively, and soldered and fixed as appropriate.

The inner diameter D2o of the pair of protrusions (1) at the rear of the front 9-channel α0 and the outer diameter D34 of the cylindrical part (b) of the filter holder of the image sensor part (7) are as follows: D2o>D34... Since it is set so that . It becomes a prominent state.

The button shows the lens mount as a whole, has approximately rectangular projecting parts (9) on both the left and right sides, has a cylindrical part at the rear, and has a button in front of the opening Q of the lens mount IIQ.
The screws (B) for attaching the lens have been cut. Moreover, the overhanging part 61) is the front no! ? The screw (
4) and a screw hole (to).

... is an adjustment ring, and there are knurling marks carved all over its outer circumference◇. The width of this knurling groove is the diameter of the small diameter steel ball α force of the front spring/L/αQ! ,t
lll is selected to be small. Also, the entire inner surface of the adjustment ring is threaded.

QO is a slide ring, and there is a mooring groove (
(c) are provided, and cutouts (2) are provided at the top and bottom of the rear portion, respectively. This mooring groove (c) is Freon)/”
The flanges (corresponding to the locking pins (6) of 11 and in the notches) correspond to the protrusions, respectively. Further, the outer surface i and C of the slide ring 0 are threaded over the entire surface in order to be coaxially connected to the inner surface of the adjustment ring 2, and the inner surface is smooth.

The outer diameter D5□ of the cylindrical part (a) of the lens mount and the diameter D74 of the inner surface σ of the slide ring are D5□ - D7
4 ・・・・・・・・・■ Since it is set so that the slide ring is loosely fitted into the cylindrical part of the lens cap L) while it is combined with the adjustment ring. .

Also, the outer surface of the adjustment ring ■ and the slide ring G'0
The respective diameters D61 and D73 of the front panel (LQ's large diameter cylindrical surface (end) and small diameter cylindrical surface α barrel) are set to be as follows.

Therefore, the slide ring (7) combined with the adjustment ring ■
) is loosely fitted, and when the lens cap (H) and the 70-ton 9-channel αQ are combined, the outer surface 6 of the adjustment ring faces the large-diameter cylindrical surface (G) of the 70-ton main channel α0, and , the outer surface (c) of the slide ring (to) faces the small diameter cylindrical surface (2). In this state, the small-diameter steel ball αη on the left side of the large-diameter cylindrical surface (to) comes into contact with the candle (13) of the outer surface radius υ of the adjustment ring, and the outer surface 6°C of the adjustment ring is on the upper side of the 70-ton nine channel αQ. is partially exposed in the recess αQ.

Also, the engagement groove (c) of the slide ring fO engages with the locking pin (to) on the small diameter cylindrical surface (g) of the front panel αQ, and the rear end q0 of the slide ring (7) Each end face of a pair of protrusions -? Projects backward from between υ. The rear end (c) of this protruding slide ring Q0 is attached to the filter holder (c) of the image sensor section (to), which is engaged with the front panel αQ as described above.
contact the front of the

The image sensor side is pressed forward by the elastic force of the α force of the pair of compression coils, so the slide ring (
c) When the rear end 7G comes into contact with the front of the filter holder (to), the adjustment ring connected to the slide ring (to) ■
The front end surface 1 of the lens abuts against the rear surface of the projecting portion 1) of the lens macromolecular lens (M).

Furthermore, the outer diameter D3 of the cylindrical portion (b) of the filter holder (to)
4 and the diameter D of the inner surface of the cylindrical part C of the lens
53 is set to be D, 4D53 ・・・・・・・・・■, so the lens mount is set to be When these are combined, the cylindrical part (b) of the filter holder is inserted into the cylindrical part (b) of the lens mount M in a fitted state, resulting in good optical axis accuracy.

The position adjustment in this embodiment is performed in the following procedure.

With the camera in use and viewing the playback image on the monitor,
Rotate the adjustment ring from the recess QQ on the upper side of the front panel αQ using a small screwdriver or the like. Then, the slide ring f*, whose rotation is prohibited by the locking pin (to), smoothly moves in the front-rear direction (axial direction), and the image sensor section (2) is easily adjusted to the predetermined flange pack.

After the adjustment is completed, adjust the adjustment ring - 〇Outer surface part υ candle) 62
and the small-diameter steel ball αη of the front mother tongue αQ are elastically engaged to prevent rotation of the adjustment ring and to reliably maintain the adjusted state.

〔Effect of the invention〕

As detailed above, according to the present invention, the slide ring f
The position of the image sensor is adjusted by rotating the adjustment ring connected to the O with a screw and moving the slide ring in the axial direction, making it easy to make fine adjustments without the need for special tools. At the same time, after adjustment, the adjustment ring is adjusted by elastically engaging the small diameter steel ball αη.
Since the rotation of the image sensor is prevented, it is possible to obtain an image sensor position adjustment device that can reliably maintain the adjusted state.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view showing the structure of an embodiment of an image sensor position adjustment device according to the present invention, and FIG. 2 is an exploded perspective view showing the structure of main parts of the embodiment. α0 is the front panel, (to) is the image sensor section, the ring is the lens mount, the ring is the adjustment ring, and fO is the slide ring.

Claims (1)

[Scope of Claims] An annular adjustment member and an annular moving member are provided between a lens attachment member and an image pickup element portion, and are screwed together, one end of the annular adjustment member is brought into contact with the lens attachment member, and the above-mentioned A position adjustment device for an image sensor, characterized in that one end of an annular moving member is brought into contact with the image sensor section.