Direct-reading type photoelectric collimation angular instrument with yardstick
A direct-reading, goniometer technology, applied in the direction of using optical devices, instruments, measuring devices, etc., can solve the problems of operator fatigue, human error, and low measurement accuracy of 1′, so as to reduce operating intensity and eliminate human error Effect
Inactive Publication Date: 2014-11-19
长春华特光电技术有限公司
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[0003] However, the disadvantage of the optical self-collimation comparison goniometer is that manual reading is easy to cause operator fatigue, and there are also human errors. In addition, the measurement accuracy of 1' is also relatively low
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[0008] In the direct-reading photoelectric collimation goniometer adopting yardstick of the present invention, as Figure 5 As shown, the light source 1, the half mirror 4, and the collimating lens 5 are optically coaxially arranged in sequence, and a screen 8 is placed on the reflected light path of the image of the half mirror 4. The absolute code ruler 11 is located between the light source 1 and the half mirror 4 , and is on the focal plane of the collimator lens 5 . Several code tracks parallel to each other are distributed on the absolute code ruler 11. The first code track is a fine code track, and the rest are coarse code tracks. For example, there are seven coarse code tracks, and each bar code track is formed by combining light and no light The encoding has the characteristics of a single-valued function, and the encoding is a Gray code, such as Figure 7 shown. Fine code track angle period T Φ =51.2″. The reading range of coarse code track is 36T Φ . There is a...
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The invention discloses a direct-reading type photoelectric collimation angular instrument with a yardstick, and belongs to the technical field of photoelectric detection. In the prior art, an operator can easily feel tired because of manual reading, and personal errors exist; in addition, the measurement accuracy of 1' is low. According to the direct-reading type photoelectric collimation angular instrument with the yardstick, a light source, a semi-reflective and semi-permeable lens and a collimating lens are arranged in sequence in an optically coaxial mode, and a screen is arranged on a reflected light path of the semi-reflective and semi-permeable lens. The direct-reading type photoelectric collimation angular instrument with the yardstick is characterized in that the absolute yardstick is located between the light source and the semi-reflective and semi-permeable lens and located on a focal plane of the collimating lens; a plurality of yard ways parallel with one another are distributed on the absolute yardstick, the first yard way is a fine yard way, the other yard ways are coarse yard ways, and the code formed by combining the light-transmission yard ways and the non-light-transmission yard ways has the univalent function characteristics; a slit is formed in the screen, and a set of photosensitive devices are arranged behind the slit along the slit; the photosensitive devices are connected with an A / D converter, and the A / D converter is then connected with a computer. According to the direct-reading type photoelectric collimation angular instrument with the yardstick, no manual reading is needed, the direct-reading type photoelectric collimation angular instrument with the yardstick is used for measuring surface dip angle errors of an optical surface, measurement accuracy is 0.1''.
Description
technical field [0001] The invention relates to a direct-reading photoelectric collimation goniometer using a yardstick, which is used for measuring the inclination angle error of an optical surface and belongs to the technical field of photoelectric detection. Background technique [0002] The optical self-collimation comparison goniometer can measure the inclination angle of the reflective surface, such as wedge angle measurement of wedge-shaped flat glass, optical mirror angle error measurement, etc. It is an optical goniometer commonly used in scientific research, teaching, industrial production and other fields. The structure and measurement process of various optical self-collimation comparison goniometers are different from each other, and the structure and measurement process of one of them are as follows, such as figure 1 As shown, the cross reticle 2 is illuminated by the light source 1, and the transmitted light carrying the crosshair image 3 passes through the ha...
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IPC IPC(8): G01B11/26
Inventor 曹奇峰朱林莉曹向峰
Owner 长春华特光电技术有限公司
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