JPS58191918A - Optical projecting device of vertical reference - Google Patents

Abstract

PURPOSE:To set easily and accurately positions of two points based on the vertical, by constituting the device so that the optical axis of projection is adjusted on a basis of a vertical line. CONSTITUTION:The optical projecting device of vertical reference consists of a supporting base A and a main body B. The box-shaped supporting base is supported by three legs 1-3, and a supporting face 5 provided with a supporting hole for supporting the main body B is provided on the upper face of the supporting base. Horizontal adjusting knobs 6 and 7, by which heights of legs 1-3 are controlled to make the supporting face 5 horizontal, and a level are provided on the supporting face 5. The main body B is approximately cylindrical and consists of a light source cylinder member 20, a supporting cylinder member 30, an intermediate cylinder member 50, and a projection lens supporting member 70. A pentagonal prism 28 as a horizontal refracting means is provided on the light source cylinder member 20.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vertical reference optical projection device that can easily set the positions of two points based on the vertical.

In building lighting wiring work, interior decoration work, etc., for example, when finding the position of a point marked on the floor and a corresponding point on the ceiling or wall, conventionally a pendulum suspended from the ceiling was used. The method used is to wait for the weight to stop and then repeat the same process by changing the hanging position of the ceiling thread until the position where the weight stopped matches the mark on the floor. It takes a lot of effort and time to position it.

Therefore, the present invention provides a vertical reference optical system that can easily and accurately determine the position of a point on the floor and a corresponding point on the ceiling, wall, etc. with a vertical line as a reference, simply by installing the device on the floor. The aim is to provide a projection device.

Hereinafter, the apparatus of the present invention will be explained in detail based on the illustrated embodiments. The device of the present invention is broadly divided into a support base A and a main body B. A box-shaped support stand A is supported by three legs 1, 2.3, and a support surface 5 having a support hole 4 for supporting the main body is provided on the upper surface.

The height of the legs 1.2.3 is adjusted on the support surface 5.
horizontal adjustment knobs 6, 7 and a spirit level 8,
9 is the setting. The level 8 is placed parallel to the straight line connecting the legs 1.degree.2, and the level 9 is placed at right angles to the level 8. The rotation of the horizontal adjustment knob 6°7 is directly transmitted to the leg 1.3 through flexible wires 11 and 1.3, and the rotation of the horizontal adjustment knob 6 is transmitted to the leg 2 through a pair of reversing gears 14 and 15. Flexible wire 1
2 (7) On the other hand, the main body B is approximately cylindrical and consists of a light source cylindrical member 20, a support cylindrical member (material), an intermediate cylindrical member 50°, and a projection lens support member 70, and has an integral structure. A transparent glass M21 is provided at the top of the light source section 20, and four cooling holes 22 are provided on its peripheral wall.Nine holes 22a are provided inside the cooling holes 22. It is a light plate.A plug n is attached to one of the cooling holes η, and it is configured to be connected to an external power source.A socket 24 is provided under the plug n, and a fixing screw 5 is provided along with the plug. It is fixed to the light source cylindrical member 20 at [7].

The light source 26 attached to the socket 24 is configured to be located at the axis of the cylinder of the light source cylindrical member 20. Further, as a light source, a halogen lamp is used in this embodiment. A supporting cylindrical member (9) is integrally attached directly below the light source cylindrical member 20. Centering adjustment screw; 32 to support cylindrical member 3
The indicator plate support ring 31 is fixedly fixed so that it can be freely positioned at 0.
A condenser lens is mounted directly below the light source section using a fixture, and an index plate 35 having a leveling index in the center is mounted directly below the condenser lens. A flange 37 is provided on the outer peripheral portion of the lower end of the support cylindrical member 30, and is configured to be placed on the support surface 5 of the support stand A. Moreover, the bottom surface of the flange 37 is
The surface is perpendicular to the axis of the main body so that the axis of the main body B becomes vertical when placed on a horizontal support surface 5. 7 The main body fixing lever 41 is attached to the flange 37 with a pin 42 and a fastening pin 43 so that the main body B can be fixed to the support base A.
A ring-shaped fastening plate 45 is attached to the head 44 of the fastening pin 43 via a spring plate 46 so as to surround the main body B. A movable cylindrical part stamp is provided in the lower space of the intermediate cylindrical member 50 whose upper end is fixed inside the flange 37. At the top of the movable cylindrical member ω, a concave mirror 61 with a transparent or perforated center is attached to a spring ring 62.
It is attached with a circumferential groove a on the outer periphery.

Here, a diagonal groove 51 is provided in the intermediate cylindrical portion (part) opposite to the circumferential groove 67K, and an adjustment ring portion for moving the movable cylindrical portion marking is rotatably provided on the outer periphery of the diagonal groove 51. On the adjustment ring B, a protrusion 6 passes through the oblique groove 51 and fits into a circumferential groove 67. Further, the longitudinal protrusion provided on the inner wall of the movable cylindrical member ω fits into the longitudinal groove n provided on the inner cylinder 74 of the projection lens support member 70, and by turning the adjustment ring B, the movable cylindrical member It is constructed so that the stamp can move up and down without rotating. Reference numeral 71 denotes a downward projection lens and a pusher 2 attached to the upper end of the threaded cylindrical member 73. Further, the screw receiver rotatably provided in the inner cylinder 74 of the projection lens support member 70 has a ball 75 and a screw groove 76 of the screw cylindrical member 73 screwed together, and is provided integrally with the screw cylindrical member 73. By turning the adjustment ring 78, the threaded cylindrical member 7
3 is configured to move up and down. The optical axes of the condenser lens, the concave mirror 61, and the downward projection lens 710 are configured to coincide with the axis (2) of the main body.

Furthermore, a horizontal refracting means is attached to the upper part of the light source cylindrical member of the main body B so that the projection optical axis directed vertically upward is refracted by 90 degrees by the concave mirror 61 to obtain a horizontal projection axis H. It is. In the case of the embodiment, a pentagonal prism 28 is used as the horizontal refracting means, and the prism attachment 27 is mounted on the upper surface of the light source cylindrical member 20 to achieve attachment. In this case, if the pentagonal prism 4 is used as the horizontal refracting means, even if the mounting surface of the prism attachment 27 is slightly tilted from the horizontal with respect to the upper surface of the light source cylindrical member 20, the vertical projection optical axis may be vertical. For example, there is an effect that the error of the horizontal projection axis H from the horizontal is much smaller than the inclination of the mounting surface.

Further, a lens optical system can be provided above the light source as a vertically upward projection means, but in this case, an expensive and large lens optical system is required to perform bright and clear projection. In this respect, if the concave mirror 610 reflective optical system is used as in the embodiment, it is possible to construct a bright and clear target projection means free of chromatic aberration at low cost and in a small size.

Furthermore, in the above embodiment, it is assumed that the target object vertically above the ceiling surface is located far away [7, and the target object vertically below the floor surface is located nearby], and the concave mirror 61 is moved vertically upward. The projector is configured to project vertically downward by the projection lens 71, but conversely, in cases where the vertically upward target is close and the vertically downward target is far away, such as in an underground construction ring, , turn the optical projector main body B of the embodiment upside down [7], attach the 7 flange 37 of the support cylindrical member (material) to the support surface 5 of the support base A, direct the projection optical axis by the concave mirror 61 vertically downward, and project. The projection optical axis of the lens 71 may be directed vertically upward.

Note that if the projector body BV is installed horizontally with respect to the support base A, horizontal refraction means will not be necessary, and the projector body BV can be tilted at an angle of 30°, 45°, 65°, etc. By making it possible to install the projection optical axes at different angles with respect to the vertical, projection optical axes can be obtained.

The mode of use of the device of the present invention will be explained based on the embodiment having the above configuration. First, the support stand A is placed almost directly above the marked point on the floor to level the support surface 5. Suppose now that the bubble in the spirit level 8 is at position 8a. At this time, when the horizontal adjustment knob 6 is turned to the right, the rotation is transmitted through the flexible wire 11 and the leg 1 protrudes.At the same time, the rotation is transmitted through the reversing gears 14 and 15 to IpH2 through the flexible pull wire 12, and the leg 1 comes out. It is configured so that the leg 2 is retracted by the same amount as the amount,
Therefore, the bubble 8a of the level 8 can be moved to the center 8c without moving the bubble of the level 9.

Furthermore, when the bubble is located at position 8b, the reverse operation may be performed. Since the rotation of the horizontal adjustment knob 7 is transmitted only to the legs 3 through the flexible wire 13, the bubbles in the level 9 can be moved without moving the bubbles in the level 8. Therefore, the support surface 5 can be easily leveled no matter which of the level adjustment knobs 6.degree. 7 is operated first. Next, the main body B is placed on the support surface 5 through the support hole 4 with the flange 37, so that its projection optical axis and the axis 2 of the main body coincide with the vertical line at the same time. Here, on the floor surface, the light from the logen lamp is transmitted through the condenser lens O, the index plate A, the central transparent part of the concave mirror 61, and the downward projection lens 71. An index for leveling will be projected. At this time, the threaded cylindrical member 73
By rotating the adjustment ring 78, the downward projection lens at the top thereof can be moved up and down to adjust the focus of the leveling index. The support hole 4 of the support surface 5 is larger than the outer diameter of the intermediate cylindrical member (material) so that the main body B can be moved within a certain range, so the main body B can be moved and the marks on the floor and the projected leveling When the main body fixing lever 41 is tilted when the indexes of 2 and 2 match, the cam action pulls the fastening pin kuru upwards, and the head 44 of the fastening pin 43 lifts up the fastening plate 45 via the spring plate 46, and the flange r and the fastening plate 45 and the support surface 5, the main body B and the support base A can be fixed. At this time, the leveling index is reflected vertically upward by the concave mirror 61, and is projected onto Oigashi through the space around the halogen lamp 26.

Further, by rotating the adjustment ring B, the concave mirror 61 attached to the movable cylindrical member ω is moved up and down, and the leveling index can be focused. In addition, if the prism attachment 27 is placed on the light source cylindrical member 20 and the pentagonal prism A is attached, the optical axis (2) emitted vertically upward is bent at a right angle and becomes the horizontal optical axis (H), and a leveling index is placed on the wall cape. Can be projected.

As described above, according to the vertical reference optical projection device according to the present invention, the projection optical axis of the optical projector that can irradiate light in two directions directly opposite to one projection optical axis is leveled with respect to the vertical line. Because of its configuration, the position of the corresponding point on the ceiling or wall can be accurately and easily determined by simply installing the device on the floor and matching a point on the floor with the projected leveling index. This has the effect of making it possible to achieve this goal, and it is of great practical benefit.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of the apparatus of the present invention, FIG. 2 is a plan view of the support base, and FIG. 3 is a longitudinal sectional view of the main body. A: Support stand, B: Main body, 1.2.3: Legs, 6, 7; Horizontal adjustment knob, 8, 9: Level, 2o: Light source cylindrical member, 2
6: Light source (halogen lamp), 3o: Support cylindrical member, O: Condenser lens, 35: Index plate, 37: 7 Lunge, 41: Body fixing lever, 45: Fastening plate, 50: Intermediate cylindrical member, (A): Movable cylindrical member, 61: Concave mirror, 71:
Downward projection lens, 73: threaded cylindrical member. Patent applicant Masaru Arai Figure 2

Claims (1)

[Claims] (1) In an optical projector configured to irradiate light in two directions directly opposite to a single projection optical axis, a vertical reference optical system configured to level the projection optical axis with respect to a vertical line. Projection device. (2) When the optical projection device according to claim 0 is placed on a horizontal surface, its projection optical axis points in the vertical direction, one projection light is directed vertically upward, and the other projection light is directed vertically downward. A vertical reference optical projection device configured to face the vertical reference. (31) In the optical projection device according to claim (2), by installing a pentagonal prism on the projection optical axis, the projection optical axis can be bent at a right angle. A vertical reference optical projection device configured such that one projection light is directed in the horizontal direction.