Optical element center positioning and adjusting mechanism using double-eccentric-circle principle
An optical element, center positioning technology, applied in optical elements, optics, installation, etc., to save space and reduce costs
Active Publication Date: 2015-07-29
NANJING INST OF ASTRONOMICAL OPTICS & TECH NAT ASTRONOMICAL OBSE
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Problems solved by technology
For example, the optical fiber technology that is gradually being widely used at present often requires a mechanism to precisely place the position of the optical fiber head on the focal point of the system; and in some specific occasions, the existing technology has not yet had a technical solution that can satisfactorily complete the above tasks
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Embodiment 1
[0019] Embodiment 1, using the optical element center positioning adjustment mechanism based on the principle of double eccentric circles, refer to figure 1 , Figure 2: The mechanism is composed of three main components. The optical fiber head to be adjusted is clamped on the clamping disc 1, and the clamping point 4 has an eccentric distance L1 from the center of the clamping disc 1. The outer circle of the clamping disc 1 is installed in the inner circle of the secondary disc 2, and the inner element and the outer circle of the second disc 2 also have an eccentric distance L2. The secondary disc 2 is installed in the inner circle of the basic disc 3, and similarly, the inner circle has an eccentric distance L3 from the outer circle. The center of the outer circle of the basic disk 3 is on the theoretical optical axis O. By rotating the clamping disk 1, it can be seen that the movement track of the optical fiber head to be adjusted is a dotted circle X1, and the distance bet...
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An optical element center positioning and adjusting mechanism using the double-eccentric-circle principle is structurally characterized in that the circle center of a basic disc is disposed on an optical theoretical axis, a secondary disc is disposed on the inner circle of the basic disc, and the eccentric distance between the inner circle of the basic disc and the outer circle of the basic disc is L3; the outer circle of a clamping disc is disposed on the inner circle of the secondary disc, and the eccentric distance between the inner circle of the secondary disc and the outer circle of the secondary disc is L2; a clamping point is disposed on the inner circle of the clamping disc, and the eccentric distance between the clamping point and the circle center of the clamping disc is L1. The optical element center positioning and adjusting mechanism has the advantages that the position of an optical fiber head can be accurately placed at system focal points, the guide rail and the adjusting screw of a conventional adjusting mechanism are omitted by an optimized locking mechanism, and adjusting is achieved only by using concentric circle rotation; space can be saved while cost is lowered in special occasions.
Description
technical field [0001] The invention relates to an optical system adjustment mechanism, in particular to an optical element center positioning adjustment mechanism utilizing the principle of double eccentric circles. Background technique [0002] In the process of optical system adjustment, it is often necessary to adjust a certain component to the optical axis. That is, the center of the component coincides with the center of the system. In general, each element is installed on the optical adjustment mount, and the position and attitude of the element are adjusted through individual adjustment screws and guide rails as required; that is, the displacement in three different directions and the rotation angle around the three coordinate axes in space. In some special cases, if the space position cannot accommodate the placement of the adjustment frame, it is necessary to use some special adjustment methods to adjust the position of the components. For example, the optical f...
Claims
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IPC IPC(8): G02B7/00
CPCG02B7/003
Inventor 陈忆李鹏志戴松新江海娇姜明达侯永辉张凯
Owner NANJING INST OF ASTRONOMICAL OPTICS & TECH NAT ASTRONOMICAL OBSE