PATENT CLAIM ANALYSIS

Application Number: 15533028
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-07
Patent Classification: ["356", "139010"]

Abstract:
A polar axis calibration system ( 100 ) comprises: a polar scope ( 10 ), a polar axis calibration control device ( 20 ) and a display device ( 30 ). The polar scope comprises an optical lens ( 11 ) and an image sensor ( 12 ) for collecting constellation images (IM); the polar axis calibration control device receives the constellation images from the polar scope and determines the position (P 1 ) of the rotation center of the polar axis and the celestial pole position (P 2 ), the position of the rotation center of the polar axis means the position of the rotation center (R 0 ) of the polar axis ( 510 ) of the equatorial instrument in the plane of the constellation image, and the celestial pole position means the position of the celestial pole in the plane of the constellation image; and the display device is coupled to the polar axis calibration control device and used to display the constellation image, the celestial pole position and the position of the rotation center of the polar axis. The present invention also provides a polar scope, a polar axis calibration control device, as well as an equatorial instrument ( 500 ) and an astronomical telescope comprising the aforesaid polar scope or polar axis calibration system. According to the present disclosure, it is possible to align the celestial pole position directly with the rotation center of the polar axis, thus improving the calibration accuracy. Furthermore, it is possible to lower the requirements for the installation accuracy of the polar scope.

Claim (Index 8):
The polar axis calibration system according to  claim 4  or  7 , wherein the celestial-pole-position determining module comprises an atmospheric refraction correcting module, which performs the following operations:\n obtaining correction amount for the atmospheric refraction according to the geographical latitude and empirical formula; \n determining the correction distance in the constellation images according to the image angular resolution of the constellation image, based on the correction amount for the atmospheric refraction; \n determining the height direction of the horizon system of coordinates in the constellation images; and \n moving the celestial pole position by the correction distance along the height direction of the horizon system of coordinates in the plane of the constellation image, to obtain a corrected celestial pole position.

Metadata:
- Claim Count in Document: 38.0
- Percentile: 90.0
- Lexical Diversity: 3.31395
- Patent Class: 356.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['12740251', '12927185', '11082473', '11013275', '11285030']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7545078817906168
- 35 USC 102 Novelty (BERT): 0.5165727798682588
- Combined Prediction Score: 0.7307143715983809
- Mean Citation Score: 278.08071
- Max Citation Score: 309.1831
- Similarity Product: 211.7483145460368

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test