Cross image rapid positioning transmission-type eccentric instrument

Abstract

The invention discloses a cross image rapid positioning transmission-type eccentric instrument, which comprises an adjusting seat, a test light path and a test CCD, a jig for loading a lens or a lens assembly is arranged in the adjusting seat, the cross image rapid positioning transmission-type eccentric instrument is characterized by further comprising an auxiliary CCD and an auxiliary light path, an auxiliary point is arranged on the auxiliary CCD, the auxiliary CCD can shoot the circle center on the jig through the auxiliary light path, and the image of the circle center on the auxiliary CCD can coincide with the auxiliary point. According to the eccentric meter, the double-light-path design of the test light path and the auxiliary light path is adopted, the test light path ensures that a cross image is sharp and clear, the resolution ratio is high, the eccentric core of a tested element or assembly can be accurately calculated, the auxiliary light path adopts a large field angle to assist in simply and rapidly finding the circle center and the cross image, and the simplicity and convenience of use of the eccentric meter are greatly improved.

Description

technical field [0001] The invention relates to an eccentricity meter, in particular to a transmission type eccentricity meter for quick positioning of a cross image. Background technique [0002] With the continuous development of the optical industry, the requirements for lens analysis are getting higher and higher, such as mobile phone lenses, security lenses, etc., and the corresponding requirements for lens processing and lens assembly technology are becoming more and more stringent. Lens eccentricity is one of the important factors to evaluate the quality of lens processing. Lens assembly eccentricity is the fatal factor that determines the quality of lens imaging. It is also used more and more widely; the eccentricity instrument includes test CCD, test optical path, adjustment seat, the adjustment seat is equipped with light source, chart board (there is a fixed cross line in the chart board), fixture and placed on A lens or lens assembly on a jig. Under standard co...

AI Technical Summary

Problems solved by technology

Because the cross wipe image of the eccentricity meter is required to be very clear, the corresponding field of view of the test optical path is also very small (about 2 degrees). Therefore, it is not easy to take a cross wipe image with the test CCD when the eccentricity meter on the market is in use. If the position of the jig is moved, the cross wipe will deviate from the field of view displayed by the test CCD. When replacing a new test jig or testing different types of lenses or components, it is not easy to find the cross wipe on the test CCD, causing great inconvenience to the use. Therefore, in order to solve the above problems, the applicant designed a cross-image rapid positioning transmission eccentricity instrument

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