JPH01907A - optical bench - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to an optical bench that supports an optical component and is capable of adjusting the attitude of the supported optical component.

(Prior Art) In order to correctly place an optical component in an optical path in various optical devices, it is necessary to make the optical bench that supports the optical component adjustable so that the optical component can be positioned correctly in the optical path. is necessary.

As such an optical bench, there is conventionally one shown in FIG. In this optical bench, a plurality of screws ■ are attached to a holder ■ that holds a lens ■, and a coil spring ■ is attached around the screw ■ between this holder ■ and the optical bench main body (towards).
It is configured to adjust the attitude of the lens (2) by adjusting the rotation of the plurality of screws (2). The optical bench shown in Fig. 4 also includes a holder ■ that supports the optical component ■ and a holder ■
(to the main body supporting the holder) so as to be slidable on one cylindrical surface, and as shown in Fig. 5, the circumferential direction is the longitudinal direction in the groove (2) formed at the end of the holder (2). After forming a long hole (2) and adjusting the position by moving it as shown by the arrow (10) in FIG. 4, it is fixed with a screw (2) via a spacer (11).

However, these conventional optical benches have the following problems.

That is, in the optical bench shown in FIG. 3, the position in the optical axis (13) direction, the angle of inclination of the lens (13) with respect to the optical axis (13), and the direction of inclination must be adjusted using a plurality of screws (2). Since there are many degrees of freedom in adjustment, it takes time to adjust the posture.

Furthermore, since the lens (2) is supported by a screw (2) and a spring (2) attached around it, there is a problem that it is susceptible to external disturbances such as vibrations.

Further, in the optical bench shown in FIG. 4, since the holder (2) can freely move in the circumferential direction, it is difficult to make minute positional adjustments in the circumferential direction. In addition, there is a problem in that the degree of freedom for adjusting the attitude of the optical component (2) is that it is only possible to adjust the rotation around the horizontal axis, but not around the vertical axis perpendicular to the horizontal axis.

(Problems to be Solved by the Invention) As mentioned above, in order to correctly arrange optical components in the optical path in various optical devices, an optical bench is required to correctly position the optical components. Since the optical bench has many degrees of freedom in adjustment, it takes time and effort to adjust the posture. Adjustments can only be made in limited directions. Difficult to make minute position adjustments. Since the optical components are not held sufficiently, there are problems such as being vulnerable to external disturbances such as vibrations.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to construct an optical bench that can easily and accurately adjust the posture of optical components.

[Structure of the invention]

(Means for Solving the Problem) In an optical bench that holds optical components and adjusts their posture, there is a movable optical bench that is connected to the main body via a connecting part and whose parts other than the connecting part are separated from the main body. An optical bench was constructed of a base body having a movable part and an optical component attached directly or indirectly to the movable part, and a displacement means attached to the main body or the movable part to displace the movable part.

(Function) As described above, a movable part is provided which is connected to the main body via a connecting part and whose parts other than the connecting part are separated from the main body, and an optical device is connected to this movable part directly or indirectly. By attaching the component and configuring the movable portion thereof to be displaced by the displacement means, the attitude of the optical component can be adjusted easily and with high precision.

(Example) The present invention will be described below based on an example with reference to one drawing.

Fig. 1 shows the configuration of an optical bench which is an embodiment of the present invention, and Figs. 2 (A) and (B) show its general view and side view, respectively. (20)
a plate-shaped first base (21) supporting the first base (21);
21), and a plate-shaped second base body (22) that supports the optical component (20).

Therefore, the first base body (21) has a small width in the center part.
That is, as will be described later, cut grooves (25a) are formed along the plate surface from both ends of the connecting part (24), which is elastic or flexible and is formed to be easily deformed by external force.
(25b) are formed, and these cut grooves (25a), (2
5b) consists of two parts divided in the thickness direction. The upper part of one of these two parts (26
) is a movable part of the first base (21), and cut grooves (25a),
(25b) are provided, and by screwing screws (28) into these screw holes (27),
By elastically deforming the connecting portion (24), for example, the movable portion, that is, the upper portion (26) can be rotationally displaced relative to the lower portion (29). In addition,
In order to facilitate deformation of the connecting portion (24), cut grooves (25a) and (25b) are provided on both sides of the connecting portion (24).
A circular groove (30) having a diameter larger than the groove width is formed. Further, the lower portion (29), that is, this first base body (21
), there is a second
A protrusion (31) is formed on the base (22) for displacing the first base (21).

Further, the second base body (22) is formed to have almost the same size as the first base body (21), and has a part in the center similar to the connecting part (24) of the first base body (21). Connecting part (3
A movable part (34) separated from the other parts of the base body (22) is provided by a cut groove (33) that passes through both the upper and lower plate surfaces except for the movable part (34). This movable part (34) is
A mounting portion of the first base (21), the first base (21)
1) is a screw hole (35) provided in this movable part (34).
) is attached by a screw (36) that screws into the hole. Also,
The negative end of the second base (22) is attached to the first base (22).
A notch (37) into which the projection (31) provided on the second base (22) is inserted is provided, and the first base (21) attached to the second base (22) is inserted into the notch (37). ) A screw (38) that is screwed into the side wall and presses against the protrusion (31).
), the first base (21) is rotationally displaced in a direction perpendicular to the rotational displacement direction of the movable portion of the first base (21).

When the optical bench is configured as described above, the optical component (20) supported by the upper part (26) of the first base (21), that is, the movable part, can be moved by rotationally displacing the movable part by the screw (28). , it can be adjusted by rotating the connecting part (24) around a horizontal axis.

Further, by rotationally displacing the first base body (21) using a screw (38) attached to the second base body (22), rotation adjustment can be performed around a vertical axis centering on the connecting portion (32).

Therefore, if you configure the optical bench as described above.

With respect to the optical component (20), each substrate (21), (
22), the posture can be adjusted easily. Moreover, by forming the connecting parts (24) and (32) with high rigidity, the connecting parts (24) and (32) formed with high rigidity and the screw (28),
(38) makes it possible to reliably hold the adjusted position, making it possible to provide an optical bench that is resistant to external disturbances such as vibrations.

In the above embodiment, one optical bench was constructed by combining the first base body and the second base body, but if only rotational adjustment around the horizontal or vertical axis is required, only one of the base bodies may be used. It can be an optical bench.

Note that this invention is not limited to the above embodiments,
It goes without saying that various changes can be made without changing the gist of the invention.

〔Effect of the invention〕

A base body, which has a movable part connected to the main body via a connecting part, and a part other than the connecting part of the bracket is separated from the main body, and an optical component is attached directly or indirectly to the movable part, and one main body or Since the optical bench is constructed with a displacement means that is attached to the movable part and displaces the movable part, by forming the connecting part with high rigidity, the posture of the optical component can be adjusted easily and with high precision, and the adjustment position can be easily adjusted. It can be used as an optical bench that reliably holds the

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of an optical bench according to an embodiment of the present invention, FIGS. 2A and 2B are front and side views thereof, respectively, and FIG. 3 is a diagram of a conventional optical bench. FIG. 4 is a diagram of a different conventional optical bench, and FIG. 5 is a partially cutaway diagram of the holder thereof. (20)...Optical parts (24)...Connection part (
25a), (25b)... Cut groove (26)... Upper part (movable part) (28)... Screw (32
)...Connection part (33)...Notch groove (34)
...Movable part (38)...Screw agent Patent attorney Mr. Inoue Figure 1 Figure 2

Claims (1)

[Claims] A base body having a movable part connected to the main body via a connecting part and having a portion other than the connecting part separated from the main body, and an optical component is attached directly or indirectly to the movable part;
An optical bench comprising: a displacement means attached to the main body or the movable part to displace the movable part.