CN2549480Y - Optical element - Google Patents

Abstract

The utility model relates to an optical element, which is a glass body containing an automatic rotating shaft. The glass body has a first plane and a second place parallel to the first plane. The automatic rotating shaft is positioned on the glass body; the axial direction of the automatic rotating shaft is substantially vertical to the normal line direction of the first and second planes. According to the structure, the rotating shaft is integrated with the glass body so that the optical element of the utility model has the automatic rotating shaft spontaneously so as to gain comparatively high element reaction speed. Furthermore, the element has the automatic rotating shaft so that the parts such as fixing seat, bracket and interlocking mechanism are not needed like the prior part because the rotating shaft is out of the flat glass so as to greatly simplify the rotating mechanism of the optical element; and the reduced volume and weight are helpful for the improvement of the element reaction speed so as to rapidly and flatly move and switch the optical transmission path and reduce the transmission loss of the optical signal.

Description

Optical element

Technical field

The utility model relates to a kind of optical element, particularly relates to a kind of optical element that switches the travel path of light in order to translation.

Background technology

In the composition of light communication element, as configurable optical access multiplexer (ReconfigurableOptical Add/Drop Multiplexer; RODAM), photoswitch (Switch) and adjustable filter (Tunable Filter) or the like, all can apply to an optical element that comes the switches light thread path in the mode of translation.

Fig. 1 is for having the synoptic diagram in order to the optical element of translation switching-over light path now.As shown in Figure 1, this existing optical element 101 is that a sheet glass 102 is placed whole being pivoted on the turning axle 103 in a holder 104 backs.When the incident light 105 in the external world enters, use drive unit (not icon) as motor and screw rod and so on simultaneously with driven rotary axle 103.Be fixed in the sheet glass 102 of this holder 104 this moment, is that the center rotates an angle with this turning axle 103, the travel path that makes the light that sheet glass 102 reflects by light path 106 move to light path 106 '.

Use above-mentioned optical element with translation switches light thread path, must satisfy the rapid-action strong request, so rapidly switches light transmission path and the transmission loss of light signal is reduced to minimum.Yet existing sheet glass optical element must use a complexity and the numerous mechanism arrangement of element for reaching the rotation purpose, and be difficult to its miniaturization, more can't reach the effect that light path is switched rapidly.In addition, because of the shift length of translation light path formation and the linear direct ratio of thickness of sheet glass, go up must strengthen this shift length the time when design, the weight of sheet glass and volume also increase thereupon, its W-response speed is more reduced and cause the loss of more optical signal transmission.

The utility model content

At the problems referred to above, the purpose of this utility model is for providing a kind of optical element, it has the simple structure of the Miniaturizable that can reduce weight and volume, and can increase the reaction velocity of element, reaches the effect of the transmission loss of rapid translation switches light transmission path and reduction light signal.

For reaching above-mentioned purpose, optical element of the present utility model is the vitreum of tool spin axis.This vitreum has one first plane, and with first parallel plane one second plane.Spin axis is positioned at vitreum itself, and its axis direction is in fact perpendicular to the normal direction on first plane and second plane.

Aforesaid better model, for the axis of spin axis by Vitrea center of gravity.

Again, to be Vitrea shape be symmetry with respect to the axis of spin axis to a better model.

Again, a better model be vitreum also to have profile be taper or columniform blind hole, and an end of external turning axle is inserted into and is fixed in the blind hole, and this blind hole cooperates with external turning axle close-fitting.

Again, another better model is that vitreum also has the paired turning axle that one is connected with.

Again, another better model is set up on the bearing of symmetry for this vitreum.

Again, a better model is that vitreum also has two arc surfaces, and the radius-of-curvature of this arc surface equates, and its center of circle is dropped on the axis of spin axis.

According to said structure, turning axle is the design of vitreum itself, makes optical element of the present utility model itself promptly have spin axis, and can obtain a higher element reaction velocity.Moreover, because of element itself promptly has spin axis, so must be as the prior art, outside sheet glass, need the design of holder, support and interlinked mechanism etc. in addition because of turning axle, therefore can simplify the rotating mechanism of optical element in a large number, and therefore volume and the weight that reduces can directly be reflected in the raising of element reaction velocity again, and reaches the effect of rapid translation switches light transmission path with the transmission loss of reduction light signal.

Description of drawings

Below in conjunction with drawings and Examples the utility model is elaborated:

Fig. 1 is for having the synoptic diagram in order to optical element one example of translation switching-over light path now;

Fig. 2 is for according to embodiment of the present utility model, and one switches the stereographic map of optical element of the travel path of light in order to translation;

Fig. 3 is for according to embodiment of the present utility model, switches the front view of optical element of the travel path of light in order to translation;

Fig. 4 is according to the utility model embodiment, shows the vertical view of the function mode of this optical element;

Fig. 5 is another preferred embodiment stereographic map of optical element of the present utility model;

Fig. 6 is the front view of another preferred embodiment of optical element of the present utility model.

Symbol description among the figure:

1,101 optical elements

2 vitreums

2a first plane

2b second plane

3 spin axiss

4,5 blind holes

6 incident lights

7,7 ' light path

8 turning axles

9 bearings

102 sheet glass

103 turning axles

104 holders

105 incident lights

106,106 ' light path

The displacement of D light path

Embodiment

Fig. 2 is embodiment of the present utility model, switches the stereographic map of optical element 1 of the travel path of light in order to translation.Fig. 3 is the front view according to the optical element 1 of this embodiment.As shown in Figure 2, this optical element 1 comprises a vitreum 2.Be formed with the one first plane 2a and the one second plane 2b that are parallel to each other on the vitreum 2.Extraneous light is entered wherein by the first plane 2a of this vitreum 2, refracts to the external world by the second plane 2b again.This vitreum 2 has a spin axis 3, and the axis direction of spin axis 3 is in fact perpendicular to the normal direction of this first plane 2a and this second plane 2b.

As shown in Figure 2, in this embodiment, vitreum 2 is to grind out a paired parallel surfaces with a glass cylinder in its side and to form, and therefore this Vitrea profile has two arc surfaces that radius-of-curvature equates, and the center of circle of cambered surface is dropped on the axis of this spin axis.Vitreum 2 also has blind hole 4,5, the profile of this blind hole for example can be taper or cylindrical or the like, its size is to cooperate external turning axle (not icon) so that an end of external turning axle is when inserting blind hole, both can fluid-tight engagement to reach fixing effect.

Fig. 4 is according to the utility model embodiment, shows the vertical view of the function mode of this optical element 1.At first, vitreum 2 is positioned at the O-A position, when incident light 6 is entered by the first plane 2a, vitreum 2 is driven by drive source (not icon) simultaneously and rotates a θ angle, because of in the present embodiment, spin axis 3 is to be positioned at vitreum 2 itself, so enter by the first plane 2a and when the second plane 2b reflects at light, vitreum 2 is that the center rotates the θ angle to O-A ' position by the O-A position with this spin axis 3 promptly, and the opticpath that the second plane 2b is reflected, by the light path 7 of the O-A position of original cooperation vitreum 2 switch to the light path 7 that cooperates O-A ' position '.

Because the design of vitreum 2 tool spin axiss 3 own, optical element like this and existing is compared, at first, the turning axle 103 that present embodiment will have element now is outer and move to and become spin axis 3 on the vitreum 2 by sheet glass 2, then be the vitreum 2 of center rotation, can produce identical rotational angle theta to move more short-range mode with this spin axis 3.In other words, can obtain higher element reaction velocity.Particularly effect is particularly remarkable when spin axis 3 moves to center of gravity place on the vitreum 2.Moreover, because of element itself promptly has spin axis, so must be as the prior art, outside sheet glass, need the design of holder, support and interlinked mechanism or the like because of turning axle, and can simplify the rotating mechanism of optical element and the volume of itself in a large number, and the weight that therefore reduces can directly be reflected in the raising of element reaction velocity again.In sum, so the utility model can come the switches light transmission path with a higher reaction velocity, and the transmission loss of reduction light signal.

Again, because of light path 7 and light path 7 ' displacement D and Vitrea thickness be linear direct ratio, go up must strengthen this light path displacement D the time when design, Vitrea volume and weight also can increase thereupon, and cause the decline of W-response speed.More need this moment to consider with the direction of weight reduction, thereby more highlight effect of the present utility model towards simplifying optical element structure.

Fig. 5 is another preferred embodiment stereographic map of optical element 1 of the present utility model, and Fig. 6 then is the front view of this embodiment.As Fig. 5 and shown in Figure 6, this optical element 1 is the integrated mode of adopting, and directly grinds out paired turning axle 8 on vitreum 2 two ends.When the turning axle 8 of vitreum 2 was driven by drive source (not icon), it was the center rotation that vitreum 2 promptly is positioned at collinear spin axis 3 with this moment and turning axle 8, and reaches the effect of translation light path.

Moreover as Fig. 5 and shown in Figure 6, vitreum 2 also can be set up on the pair of bearings 9, and the bearing 9 by symmetry is with the position of fixing glass body 2.

The above only is an illustrative, but not is restricted.Anyly do not break away from spirit of the present utility model and category, and, all should be included in the protection domain of the present utility model its equivalent modifications of carrying out or change.For example, can be any solid shape of the paired parallel surfaces of tool as vitreum of the present utility model, but not be defined in the above embodiments.

Claims (10)

1. optical element is characterized in that: comprises,

One has the vitreum of spin axis, and it has one first plane and one second plane, and this first plane and this second plane are parallel to each other, and its axis direction of this spin axis is in fact perpendicular to the normal direction on this first plane and this second plane.

2. optical element as claimed in claim 1 is characterized in that: the axis of this spin axis is by this Vitrea center of gravity.

3. optical element as claimed in claim 1 is characterized in that: this Vitrea shape is symmetry with respect to the axis of this spin axis.

4. optical element as claimed in claim 1 is characterized in that: this vitreum also has blind hole, so that an end of external turning axle is inserted into and is fixed in this blind hole.

5. optical element as claimed in claim 4 is characterized in that: this external turning axle cooperates with this blind hole close-fitting.

6. optical element as claimed in claim 4 is characterized in that: this blind hole is taper.

7. optical element as claimed in claim 4 is characterized in that: this blind hole is cylindrical.

8. optical element as claimed in claim 1 is characterized in that: this vitreum also has the paired turning axle that one is connected with.

9. optical element as claimed in claim 1 is characterized in that: this vitreum is set up on the bearing of symmetry.

10. optical element as claimed in claim 1 is characterized in that: this vitreum also has two arc surfaces, and the radius-of-curvature of this arc surface equates, and its center of circle is dropped on the axis of this spin axis.