JPS5934882Y2 - Optical axis adjustment device for optical automatic detection device - Google Patents

Description

[Detailed description of the invention] The present invention relates to an optical axis adjustment device for a light beam type automatic detection device.The purpose of this invention is to enable extremely easy and accurate optical axis adjustment, and to enable the telescope to be adjusted after the optical axis adjustment. To provide an optical axis adjustment device for a light beam type automatic detection device which can be removed to make the emitter and receiver compact, and can be reliably attached to a telescope.

The invention will be further explained by means of illustrated embodiments.

Figures 1a and 1b show a light receiver B according to an embodiment of the present invention, in which an optical axis component 1 in which a lens 5 and a light receiving element 6 are housed is attached to a support 7 with a support fitting 14. , the optical axis forming section 1 is rotatable both horizontally and vertically with respect to the instrument stand 7.

As shown in FIG. 2, the optical axis component 1 includes a pair of frame pieces 8, 8
A pair of telescope supporting locking pieces 2, 2 are provided on the upper surface of the frame pieces 8, 8, respectively.

Each concave groove 2a below the upper water element piece of the locking pieces 2, 2 has a third groove.
As shown in the figure, the tapered portions 9.9 are shaped so that the distance a on the lens 5 side is wider than the distance a on the rear end.

The fixture 3 is made of metal and has an arc-shaped telescope holding part 10 and a flat fitting piece 11.11. In this case, the distance C between the 9H rule ends of the flat pieces 11, 11 is made wider than the distance between the rear ends of the locking pieces 2, 2.

Therefore, when mounting the telescope 4 on the fixture 3 parallel to the optical axis
, 2 from the front end side and move it backward, the telescope holding part 10 of the fixture 3 will fit into the tapered part 9 of the groove 2a.
, the elastic vertical piece 12 of the fixture 3 gradually tightens.
The telescope 4 is held firmly by the elasticity of the telescope 12.

Furthermore, if the locking piece 2.2 and the fixture 3 are designed so that the position of the telescope 4 is not too far from the optical axis X, more accurate optical axis alignment can be achieved.

The telescope 4 has an eyepiece 13 that allows viewing from a direction perpendicular to the light receiving path, and has a mirror or prism inside for reflection in the right angle direction, and can be installed under various conditions. The optical axis can be adjusted sufficiently at any location.

Although the light receiver B has been described above, the telescope mounting portion of the projector A has exactly the same structure.

Now, in order to adjust the optical axis using these emitter A and light receiver B, the telescope 4 must be adjusted as shown in Fig. 4.
All you have to do is rotate the optical axis component 1 horizontally and vertically so that you can see the other side while looking into the telescope.After adjusting the optical axis, remove the telescope 4 and place it on the instrument stand 7 as shown in Figure 1a and b.
Attach the cover 13 to the.

In the present invention, in the emitter and receiver, a pair of telescope supporting locking pieces are integrally formed on the optical axis component that can be rotated in both horizontal and vertical directions, and a pair of locking pieces for supporting the telescope are integrally formed between the locking pieces. Since the telescope is attached to the optical axis component using a removable fixture, the optical axis can be adjusted extremely easily and reliably by simply adjusting the rotation of the optical axis component to a position where the other party can be seen by looking through the telescope. In addition, the locking piece for supporting the telescope is formed so that the cross section is in the shape of a dogleg, and the groove is open on both the front and back sides as well as the opposing sides, and the dimension between the inner walls of the groove is flat from the front to the rear. A tapered part is provided on the inner wall of each concave groove so that the dimension is gradually smaller than the end-to-end dimension of the H rule, and an arc-shaped telescope holder with an open bottom and front and back ends is formed. A fixture is formed which has elastic vertical pieces extending from both ends, and the flat piece extending in the horizontal direction from the lower end of the elastic vertical piece, and both locking pieces are fitted into the grooves of the locking pieces. Since the 99-edge of the flat piece was removably press-fitted and attached to the optical axis component, with the telescope attached to the telescope time holding part of the mount, the H-edge of the flat piece was inserted into the telescope support locking piece. By simply sliding it into the groove from the front to the rear, the elastic vertical pieces of the mount will be pinched by their elasticity along the tapered part of the groove, reducing the diameter of the telescope holder and holding the telescope. The telescope can be firmly held in the holding part, and the telescope can be set at a fixed position corresponding to the axis of emitting and receiving light.
As with the fixed type, the optical axis can be aligned as surely as possible, and by simply installing a similar telescope support locking piece on each emitter and receiver, the telescope and fixtures can be shared, reducing costs. This has an advantageous effect, and furthermore, the telescope can be removed together with the mounting tool by simply pulling out the flat piece that is slidably engaged in the groove from the rear of the groove to the front.
By removing the telescope, which is no longer needed after the optical axis alignment is completed, the emitter and receiver can be made smaller. Furthermore, by removing the telescope, the emitting and receiving directions (warning direction) are difficult to discern from the outside, which is very useful for prevention. It has the effect of being

[Brief explanation of drawings]

Figures 1a and b are a front half sectional view and a side sectional view of the present invention-embodiment, Figure 2 is an exploded enlarged perspective view of the optical axis component of the same, and Figure 3 is a part of the fixture mounting part of the same. Enlarged front view with partial cutaway,
Fig. 4 is an explanatory diagram of the optical axis adjustment state same as above, where A is the emitter, B is the receiver, 1 is the optical axis component, 2 is the locking piece, 3 is the fixture, 4 is the telescope, and 10 is the telescope holder. 11 is a flat piece, 12 is an elastic vertical piece, 2a is a groove, and 9 is a tapered part.

Claims (1)

[Scope of utility model registration request] In the emitter and receiver of the optical beam type automatic detection device, a pair of telescope support locking pieces having grooves with openings on the front, back, and opposite sides are installed on the optical axis component that can be rotated freely in both horizontal and vertical directions. An arcuate telescope holder integrally protruding upward and open at the lower end and the front and back, elastic vertical pieces extending from both ends of the telescope holder, and outwards from the lower ends of the elastic vertical pieces. forming a fitting having an extended flat piece, and the dimension between the inner walls of the concave groove of both the locking pieces gradually decreases from a size slightly larger than a dimension between the outer ends of the flat piece from the front to the rear. A tapered portion is provided on the inner wall of each groove so that the outer ends of both flat pieces are removably press-fitted into the grooves of both locking pieces, and attached to the optical axis component, and then attached to the telescope holder. An optical axis adjustment device for a light beam type automatic detection device in which an inserted telescope is held in place by the diameter reduction of the telescope holder and the elasticity of the elastic vertical piece, and the optical axis is adjusted using the telescope.