JPH01251020A - Display device - Google Patents

Abstract

PURPOSE:To enable the adjustment of diopter by providing turning operation members with eccentric pins for fine adjustment of a display substrate in an optical axis direction to a display holder. CONSTITUTION:The means for fine adjustment in the optical axis direction designed to adjust the fixing position of the fixing plate of the display substrate 2 in the optical axis direction to the display holder 1 is formed in the position where the display holder 1 and the display substrate 2 are engaged with each other. The display substrate 2 engaged with the eccentric pins 15a, 16b can be finely adjusted in the optical axis direction when the turning operation members 15, 16 with the eccentric pins 15a, 16a turnably provided to the display holder 1 are turned by a screw driver. The diopter is thereby easily adjusted.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to a display device in an optical device such as a camera, and in particular to a display device for enabling minute positional adjustment between members in the assembly process of a display device in a viewfinder. The present invention relates to a display device equipped with means.

[Prior Art] FIGS. 4 to 6 are diagrams showing a part of a known display device in a finder installed in photographic equipment such as a silver halide film camera and a video camera.

In FIG. 4, 8 is a cylindrical part in which an erector lens, an eyepiece, etc. are incorporated, 9 is a finder block in which a mirror 10 and a focusing plate 12 are incorporated, and is attached to one end of the cylindrical part 8; is suspended and supported by pins 6 and 7 protruding from the outer circumferential surface of the cylindrical part 8, and screws 5
A display holder is fixed to the outer circumferential surface of the cylindrical portion 8, and 11 is a known quick return mirror, and a light beam entering the quick return mirror 11 from the direction of arrow A through a photographing lens (not shown) passes through the quick return mirror. 1
After being reflected by the lens 1, the light enters the eyepiece lens in the cylindrical portion 8 via the focusing plate 12 and the mirror 1o.

FIGS. 5 and 6 are diagrams showing the mounting structure of the display holder 1 and various parts mounted thereon. Figures 5 and 6
In the figure, 2 is attached to the display holder 1 by screws 3 and 4.
13 is a transparent cover made of acrylic resin that covers an unillustrated display element (for example, an LED) fixed on the display substrate 2, and 14 is glued to the cover 13. It is a mirror. The display substrate 2 is made of epoxy resin reinforced with glass fibers, on which a circuit pattern is formed and display elements such as LEDs are mounted. The mirror 14 is fixed to the cover 14 diagonally upward, as shown in FIG. 5, in order to direct the light generated from the display element toward the eyepiece in the cylindrical portion 8.

The ends of two parallel arms provided on the display holder 1 are provided with pin holes 1a and 1b for inserting pins 6 and 7 (Fig. 4), and one of the arms is provided with holes 1a and 1b. is the hole I for inserting the screw 5 (Fig. 4) near the bottle hole 1a.
C is installed through it.

When attaching a display device having the above structure (a device consisting of a combination of the display holder 1 and various parts attached thereto) to the cylindrical part 8, before tightening the screws 5, center the bottle hole 6 and the flange. While rotating the display holder 1, the vertical position of the display with respect to the field of view is adjusted, and when the display reaches a desired position near the field of view frame, the display holder 1 is fixed to the cylindrical part 8 by tightening the screw 5.

[Problems to be Solved by the Invention] In the display device having the structure as described above, the display relative to the field of view can be adjusted in the vertical direction, but cannot be adjusted in the optical axis direction, and therefore has the disadvantage that the diopter of the display cannot be adjusted. was there. In order to adjust the display in the optical axis direction (that is, adjust the diopter), for example, the bottle holes 1a and 1b may be made oblong holes instead of round holes, but if the bottle holes 1a and 1b are made oblong holes, , it becomes difficult to slightly move the display holder 1, and the position adjustment of the display holder 1 becomes difficult because the position adjustment in the vertical direction and the position adjustment in the optical axis direction (back and forth direction) must be performed at the same time. Further, there was a problem in that the positioning accuracy of the display holder 1 was also lowered.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a display device configured so that the diopter can be adjusted and the display holder can be positioned in the same manner as in the prior art.

[Means for Solving the Problems] In the present invention, the diopter can be adjusted by providing the display holder with a rotating operation member with an eccentric bottle for slightly moving the display substrate in the optical axis direction. Features.

[Function] When the rotation operating member with the eccentric bottle rotatably provided on the display holder is rotated with a screwdriver, the display substrate engaged with the eccentric bottle can be slightly moved in the optical axis direction.

[Embodiment] An embodiment of a display device according to the present invention will be described below with reference to FIGS. 1 and 2. In FIGS. 1 and 2, members corresponding to those of the conventional apparatus shown in FIGS. 4 to 6 are designated by the same reference numerals as those in FIGS. 4 to 6.

In the exploded perspective view shown in FIG. 1, 1d and 1e are screw holes corresponding to the two screw insertion holes 2a and 2b of the display board 2. After aligning the hole 2a with the screw hole 1d and aligning the screw insertion hole 2b with the screw hole 1e, the screws 3 and 4 are inserted into the screw insertion holes 2a and 2b and rotated to remove the display board. 2 to the display holder 1.

The display holder 1 is provided with holes through which rotating operation members 15 and 16 (plugs with eccentric pins) having eccentric pins 15a and 16a at one end are inserted,
and 16 non-eccentric large diameter portions 15b (see FIG. 2) are rotatably inserted and lightly caulked so as not to escape from the holes. The rotation operation members 15 and 16 have a part 15 that is concentric with the non-eccentric large diameter portions 15b and L6b.
Heads 15c and 16c having a larger diameter than those of b and 1lib are formed at the ends opposite to the eccentric pins 15a and 16a, and the end faces of the heads 15c and 16c have grooves that engage with the tip of the screwdriver. is formed.

On the other hand, the display substrate 2 has a hole 2d for inserting the eccentric bottle 15a and a horizontally long hole 2e for inserting the eccentric bottle 16a.
is installed through it.

Note that 2c is a display element such as an LED formed on the substrate 2.

Next, the operation when attaching the display device of this embodiment to the cylindrical portion 8 will be explained.

After fastening the display substrate 2 onto the display holder 1 using the screws 3 and 4 as described above, the display holder 1 is slightly rotated around the bins 6 and 7 (Fig. 3) to move the display in the vertical direction. Adjust the display so that it is at the desired position near the viewing frame, and when the display is at the desired position, tighten screw 5.
The display holder 1 is fixed to the cylindrical part 8 by tightening. Next, after loosening the screws 3 and 4, the tips of the screwdrivers are engaged with the grooves in the heads 15C and 16c of the rotation operating members 15 and 16, and the screwdrivers are rotated. Since the eccentric large-diameter portions 15b and 16b are rotated and the eccentric bins 15a and 16a move during the day on circular arc orbits centered on the axes of the portions 15b and 16b, the display substrate 2
moves relatively horizontally on the display holder 1. Note that the eccentric bin 15 at the time before the display substrate 2 starts moving
Since the resting positions of a and 16a are perpendicular to the optical axis direction, when the eccentric bins 15a and 16a start moving, the movement of the eccentric bins has a large motion component parallel to the optical axis. Therefore, the display substrate 2 is slightly moved in the optical axis direction on the display holder 1, and as a result, the diopter is adjusted. Then, with a suitable diopter, turn! I] Stop rotating the operating members 15 and 16, and tighten the screws 3 and 4 to secure the display board 2 to the display holder 1 so that it does not move.

In the above embodiment, a rotation operation member with an eccentric bottle is used as a means for slightly moving the display substrate in the optical axis direction on the display holder, but other fine movement means can be used instead of the rotation operation member with an eccentric bottle. Of course, it may be used.

Next, another embodiment will be described with reference to FIG. Furthermore, the third
In the drawings, members corresponding to those shown in FIGS. 4 to 6 are designated by the same reference numerals as in FIGS. 4 to 6.

In the exploded perspective view shown in FIG. 3, numerals 17 and 18 are positioning bins installed in the display holder 1. 2f and 2
g is a long hole penetrated through the display substrate 2, and the bottle 17
and 18 are inserted, respectively.

According to the above configuration, when adjusting the diopter by moving the display substrate 2 in the optical axis direction by rotating the rotation operating member 16 having the eccentric bins 18a, the display substrate 2 is moved to the positioning bins 17 and 18. It is guided by long holes 2f and 2g, and does not move in the direction perpendicular to the optical axis, but moves only in the direction of the optical axis. Therefore, it is possible to adjust the display diopter without changing the visual field in the horizontal direction.

[Effects of the Invention] As explained above, according to the present invention, a display device is provided in which the diopter can be easily adjusted and image adjustment in the vertical direction can be performed using the same operations as conventional display devices. provided.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of one embodiment of the display device of the present invention, FIG. 2 is a longitudinal cross-sectional view of some of the components of the device shown in FIG. 1, and FIG. 3 is another embodiment of the present invention. FIG. 4 is a perspective view showing a conventional display device and optical equipment components related to the display device; FIG. 5 is a perspective view of the conventional display device; FIG. FIG. 1... Display holder 2... Display substrates 3 and 4.
... Screw 5... Screw 6 and 7... Screw
8... Cylindrical part 9... Finder block 10... Mirror 11... Quick return mirror 12... Focusing plate 13... Cover 14...
Mirrors 15 and 16... Rotating operation members with eccentric bins 17 and 18... Positioning pin Ryo 1 Figure 2 Sagi Figure 4

Claims (1)

[Scope of Claims] 1. A display device that includes a display holder that is rotatably provided in an optical device such as a camera and can be rotated about an axis perpendicular to the optical axis, and a display substrate fixed to the display holder. In this case, an optical axis direction fine movement means is formed at an engagement portion between the display holder and the display substrate to enable adjustment of the fixing position of the fixed substrate of the display substrate with respect to the display holder in the optical axis direction. A display device characterized by: 2. The display device according to claim 1, wherein the optical axis direction fine movement means is a rotation operation member with an eccentric pin attached to the display holder.