CN-224230931-U - Optical detection device for lens coating thickness

Abstract

The application relates to the technical field of optical detection of lenses, in particular to an optical detection device for the thickness of a lens coating film, which comprises a fixed seat, a laser, a sight glass adjusting seat, an L-shaped bracket, an X-axis micro motor, a Y-axis micro motor and a motor reflector, wherein the laser is in threaded connection with one side of the fixed seat, the sight glass adjusting seat is arranged in the middle of the opposite side of the L-shaped bracket and the laser, and the X-axis micro motor is in sliding connection with the inner side of the L-shaped bracket. The optical detection device for the film thickness of the lens is a non-contact optical detection device, namely a laser interferometry is adopted to avoid film damage, a sight glass adjusting seat and a double-shaft micro motor reflecting mirror are used for correcting an optical path in real time to adapt to lenses with different angles, an electric telescopic rod is matched with a connecting rod and a hinged lug plate to realize pitching fine adjustment of the reflecting mirror, and when the lenses are deflected, a system automatically adjusts the angle of the reflecting mirror through sight glass beam feedback, so that a measuring beam always keeps vertical incidence, and errors are reduced.

Inventors

• XIAO ZHIHONG

Assignees

• 日禺光学科技(苏州)有限公司

Dates

Publication Date

20260512

Application Date

20250611

Claims (6)

1. 1. The utility model provides an optical detection device of lens coating film thickness, its characterized in that includes fixing base (11), laser instrument (12), sight glass regulating seat (13), L shape support (14), X axle micro motor (15), Y axle micro motor (16) and motor mirror (17), laser instrument (12) threaded connection is in one side of fixing base (11), sight glass regulating seat (13) set up L shape support (14) with the opposite side middle part of laser instrument (12), the surface of L shape support (14) with one side threaded connection of Y axle micro motor (16), X axle micro motor (15) sliding connection is in the inboard of L shape support (14), motor mirror (17) are provided with two sets of, and two sets of motor mirror (17) one end respectively with X axle micro motor (15) with the motor shaft of Y axle micro motor (16) passes through shaft coupling fixed connection.
2. 2. The optical detection device for the thickness of the lens coating film according to claim 1, wherein a second reflecting mirror (2), an electric telescopic rod I (3), a connecting rod (4) and a hinged lug plate (5) are further arranged in the sight glass adjusting seat (13), the bottom of the second reflecting mirror (2) is fixedly connected with one side of the hinged lug plate (5), the output end of the electric telescopic rod I (3) is fixedly connected with the bottom of the connecting rod (4), and the top of the connecting rod (4) is hinged with the middle part of the hinged lug plate (5).
3. 3. The optical detection device for the thickness of a lens coating film according to claim 2, wherein an elastic supporting rod (6) is hinged to one side of the second reflecting mirror (2) close to the first electric telescopic rod (3).
4. 4. The optical detection device for the thickness of a lens coating film according to claim 1, wherein positioning foresight (7) is arranged on opposite sides of the foresight adjusting seat (13) and the L-shaped bracket (14) in a penetrating manner.
5. 5. The optical detection device for the thickness of a lens coating film according to claim 4, wherein a fixing frame (8), an electric telescopic rod II (9), a push rod (10) and a sliding block (20) are further arranged on the outer side of the L-shaped support (14), the fixing frame (8) is fixedly connected to the surface of the L-shaped support (14), the output end of the electric telescopic rod II (9) is fixedly connected with one end of the push rod (10), the outer side of the push rod (10) is fixedly connected with the surface of the sliding block (20), and the inner side of the sliding block (20) is in threaded connection with one side of the X-axis micro motor (15).
6. 6. The optical inspection device of the thickness of a lens coating according to claim 5, wherein the L-shaped bracket (14) is further provided with a limit notch (21) having a size larger than that of the slider (20).

Description

Optical detection device for lens coating thickness Technical Field The application relates to the technical field of optical detection of lenses, in particular to an optical detection device for the thickness of a lens coating film. Background The optical detection device for the thickness of the lens coating is key equipment in optical manufacture and precision machining, the lens coating can obviously change the transmissivity, reflectivity and damage resistance of an optical element, and is widely applied to the fields of camera lenses, spectacles, lasers, semiconductor lithography and the like, and early detection of the thickness of the coating mainly depends on a mechanical stylus method, namely contact measurement of a film layer which is easy to scratch, has low precision and is not suitable for a soft film. According to the detection device for the optical lens coating layer, disclosed by the publication No. CN218787833U, firstly, an optical lens is placed between a first clamping seat and a second clamping seat, then a cylinder is controlled to enable the first clamping seat to be close to the second clamping seat, the first clamping seat and the second clamping seat clamp the optical lens, the optical lens is detected through a detection mechanism, when the surface of the optical lens needs to be replaced, a first motor is started to enable an incomplete gear to rotate, and when the incomplete gear is meshed with a transmission gear, the transmission gear drives a second rotating shaft to rotate, so that the first clamping seat drives the optical lens to rotate in a degree that the second clamping seat is turned over, the optical lens is further enabled to achieve surface replacement detection, and the detection effect of the optical lens can be improved. Aiming at the related technology, the inventor considers that the device has the technical defect that the device only has a single clamping effect, scratches are easily left on the surface of the nanoscale film layer through a probe or a step instrument, reverse damage is caused to a soft coating, an optical detection effect is not realized through the calibration of the included angle between the center of a relevant focusing light spot and a penetrating positioning sight beam, and the detection flexibility and reliability of a lens cannot be detected. Disclosure of utility model The application provides an optical detection device for the thickness of a lens coating film, which is used for improving the technical problems that the device only plays a single clamping effect, scratches are easily left on the surface of a nanoscale film layer through a probe or a step instrument, reverse damage is caused to a soft coating film, the optical detection effect is not realized through the calibration of the included angle between the center of a relevant focusing light spot and a penetrating positioning sight beam, and the detection flexibility and reliability of the lens cannot be detected. The application provides an optical detection device for the film coating thickness of a lens, which adopts the following technical scheme that the optical detection device for the film coating thickness of the lens comprises a fixed seat, a laser, a sight glass adjusting seat, an L-shaped bracket, an X-axis micro motor, a Y-axis micro motor and a motor reflecting mirror, wherein the laser is in threaded connection with one side of the fixed seat, the sight glass adjusting seat is arranged in the middle of the opposite side of the L-shaped bracket and the laser, the surface of the L-shaped bracket is in threaded connection with one side of the Y-axis micro motor, the X-axis micro motor is in sliding connection with the inner side of the L-shaped bracket, the motor reflecting mirror is provided with two groups, and one ends of the two groups of motor reflecting mirrors are respectively fixedly connected with motor shafts of the X-axis micro motor and the Y-axis micro motor through a coupler; In one technical scheme of the application, a second reflecting mirror, an electric telescopic rod I, a connecting rod and a hinged lug plate are further arranged in the sight glass adjusting seat, the bottom of the second reflecting mirror is fixedly connected with one side of the hinged lug plate, the output end of the electric telescopic rod I is fixedly connected with the bottom of the connecting rod, and the top of the connecting rod is hinged with the middle of the hinged lug plate. In one possible technical scheme of the application, one side of the second reflecting mirror, which is close to the first electric telescopic rod, is also hinged with an elastic supporting rod. In one possible technical solution of the present application, the alignment regulating seat and the opposite side of the L-shaped bracket are provided with positioning alignment pins. In one technical scheme of the application, a fixing frame, an electric telescopic rod II, a push rod and a sliding