DEVELOPMENT IN THE CAMERA MODULE

Abstract

The invention relates to the development of a camera module with IR LEDs and a polarizing filter, intended for use in the Tobacco and Alcoholic Beverage Industry, with the aim of decoding with secure ink.

Description

1 TARIFF DEVELOPMENT IN THE CAMERA MODULE TECHNICAL AREA 5 The invention aims to decipher coding done with secure ink in the Tobacco and... IR LEDs developed for use in the alcoholic beverage industry. It is related to improvements in the camera module, which is supported by a polarizing filter. STATE OF THE ART 10 Different types of security ink technologies have been used for a long time. Current practices generally involve the following approaches: • Wavelength shift inks: Visible or UV Types that absorb light and emit light at a different wavelength. These types of inks, Although they become easily visible with lighting, they only require "presence / absence" verification. 15 This can be done for product classification or high-precision code decoding. It is not possible. • Absorbs IR light and emits IR or visible light of a different wavelength. Inks: Especially anti-Stokes or upconverter inks, special It requires sensing devices, is expensive, and the same 20 on every surface It is not demonstrating performance. • Inks that absorb IR light and emit no light: Highest level of safety. While ensuring this level of quality, reading these inks is technically the most challenging. This method is based on perception only of weak contrast coming from the reflective surface. It is based on their differences. 25 The basic method used in current devices is blue LED lighting + optics. It is based on the filtering principle; this structure only absorbs visible light and blocks IR light. It is suitable for spreading inks. However, in these systems: • Interference caused by reflections makes code reading difficult. • Contrast is poor on diffusely reflective surfaces such as tax stamp paper, 30 • Reflections from glossy print elements or background surfaces It cannot be blocked by filters. 2 Therefore, especially for tax stamps using inks that absorb IR light and do not emit light, Current methods are insufficient in these applications. Due to the problems mentioned above, a new development is necessary. He was born. 5 DEFINITION OF INVENTION The present invention eliminates the aforementioned disadvantages and the related technical Coding done with secure ink to bring new advantages to the field 10 with the aim of providing a solution for use in the Tobacco and Alcoholic Beverage Industry Sector. The camera uses IR LEDs and is supported by a polarizing filter. It is related to development in the module. This invention utilizes cross-polarized IR to solve the problems mentioned above. It develops the principle of the optical system. The innovations brought by the device are as follows: 15 - IR LED Array: Illuminates the surface of the sticker with IR light. The LED array is similar to the previous one. It has been kept the same as the system, but now in the IR band instead of the visible band. He is working. - Source Polarizer (Film): The light emitted from the IR LED is polarized using a specially manufactured film. It is passed through and polarized in a single direction. Thus, 20 from the source The emitted light is controlled. - Interaction between Stamp Paper and Ink: Stamp paper diffuses light. It reflects and distorts polarization, while reflections from bright surfaces It preserves polarization. This physical difference forms the basis of the solution. - Camera Polarizer (90°): A 90° 25' polarizer placed in front of the camera lens, relative to the source polarizer. A second, rotated film polarizer is installed. This allows polarizers to be removed from bright surfaces. Incoming “protected polarization” reflections are suppressed, leaving only scattered ones. The contrast created by the reflection and the ink reaches the camera sensor. - IR Longpass / Band Filter: This filter, added to the camera input, is for IR only. It blocks visible light interference by allowing the spectrum to pass through. 30 This invention offers the following advantages and conveniences compared to existing techniques: It provides: 3 - High reading accuracy: Bright thanks to cross-polarization structure. Reflections from surfaces are suppressed, only the label paper remains visible. Scattered reflection and ink contrast are perceived. This situation It significantly reduces the rate of incorrect / incomplete readings. - Specifically compatible with IR inks: Especially suitable for 5-inch inks that absorb IR light and emit no light at all. It has become possible to read the inks. This type of ink is the most... It was one of the more secure types, but technically difficult to read with current devices. - Ease of integration into the production line: Number of LEDs, placement and triggering. Since the timings were kept the same as the previous system, the device is currently in production. It can be easily integrated into existing lines, requiring no additional infrastructure changes. It is not required. - Optical simplicity and low cost: The problem is, instead of complex hardware... This problem was solved simply by adding film polarizers and a suitable IR filter. This approach provides both ease of maintenance and is cost-effective and durable. It is a solution. 15 - Ease of maintenance and calibration: The polarizer on the front of the camera has an adjustable angle. Thanks to its mounting with a holder, it enables fast and precise calibration in the field. It is possible to achieve optimum performance in varying light conditions. It can be provided. - Increased security level: The coding on the product is 20 Copying or counterfeiting is made more difficult, thanks to the tax stamp system. The security level is being increased. Thanks to this structure, interference caused by reflection is eliminated, and IR light is absorbed. Codes / patterns created by inks that emit no light are clear and reliable. 25 It has been made solvable in this way. The invention involves adding an angle scale or click mechanism to the polarizer holders for reuse. It is possible to make more precise adjustments. The invention involves developing camera modules that are larger and smaller, different They can be produced in various sizes and dimensions. 4 Drawings The present invention, briefly summarized above and discussed in more detail below, applications of the invention, example applications of which are depicted in the attached drawings. This can be understood by referring to the reference. However, the attached drawings are only typical of this invention. It describes the applications and inventions, therefore, of the other 5 equally effective Since it may allow applications, it cannot be assumed that it limits its scope. It should be noted. Figure 1: Exploded view of the device that is the subject of the invention. To make it easier to understand, indicate the identical elements that are common to the shapes. Identical reference numbers have been used where possible. Figures are to scale. It is not drawn and can be simplified for clarity. The elements of an application and Its features are useful to other applications without needing further explanation. It is thought that it can be included in this way. 15 Explanation of Details in the Drawings The corresponding reference numbers shown in the figures are given below. 1. Optical window element 2. Flexible film-based IR polarizing filter 3. Polarized filter positioning fixture 4. IR LED module 5. Aluminum Heat Sink 25 6. Adjustable angle IR polarized filter 7. Camera lens module 8. Camera lens riser 9. Longpass filter 10. Mounting bracket 30 11. Gigabyte Camera DETAILED EXPLANATION OF THE INVENTION This detailed explanation describes the development of the camera module that is the subject of the invention. The preferred alternatives to this structure only lead to a better understanding of the subject. This is explained in a way that is geared towards and does not create any limiting effects. The invention is an improvement on the camera module, as shown in Figure 1; Optics. Window element (1), Flexible film-based IR polarizing filter (2), Polarizing filter Positioning fixture (3), IR LED module (4), Aluminum heatsink (5), Adjustable angle IR polarizing filter (6), Camera lens module (7), Camera lens Booster (8), Longpass filter (9), Mounting bracket (10) and GigE Camera (11) 10 It includes. VisNIR Anti-reflective and Hydrophobic Coated Optical Window Element (1); System External It protects against external factors, and also the flexible film-based IR polarizing filter (2) It provides support in fixing the system. By operating with minimum optical interference, it keeps the system free of dust, 15 It protects against liquids and similar external factors. It also features a flexible film-based IR polarizer. It provides structural support for fixing the filter (2). Flexible film-based IR polarizing filter (2); polarizes IR (Infrared) LED light. It transmits the light to the product, covering the LED with its twisted structure, allowing 20% ​​of the unfiltered light to pass through. It prevents it from passing through and reaching the product. Polarizing filter positioning fixture (3); flexible film-based IR polarizing filter (2) positioning in a curved shape and fixing with an optical window element (1) It provides support from below to the outer parts by the optical window element (1) 25 It helps to compress and secure it properly. IR LED Module (4) mounted on aluminum PCB; with 950 nm IR LED array Provides high-power (~20 W) lighting. Emits light at a peak wavelength of 950 nm. It consists of aluminum PCBs on which IR LEDs are arranged. Approximately 30 at the time of image acquisition. It provides high-intensity lighting while consuming W of electrical power. 6 Aluminum heatsink (5) block; dissipates the heat generated by the LEDs, ensuring stable operation. supports the rapid and efficient use of heat energy produced by IR LED modules (4). It supports stable operation by enabling its distribution. Adjustable angle IR polarizing filter (6); 5 on the side of the camera lens facing the product It is mounted and suppresses reflection with cross-polarization. The angle is adjustable. It has a mechanism that allows cross-polarization with a polarizing filter in front of the LEDs. It suppresses surface reflections by being created. The camera lens module (7) focuses the image onto the sensor and determines the resolution. 10 Camera lens riser (8); allows the focal length to be reduced from 10 cm to 3 cm. And preferably a 0.6mm lens extender. It is mounted between the lens and the sensor. Longpass filter (9); is mounted on the side of the camera lens facing the camera. 15 It only transmits IR light, blocking visible spectrum noise. IR LEDs... It transmits the light it generates to the sensor with high transmittance. Ambient lighting. or by blocking visible spectrum components from artificial light sources It allows only the targeted IR components to reach the camera. Mounting bracket (10); Longpass filter (9), optical with camera lens module (7) It ensures that it is aligned and fixed on the axis. GigE camera (11); enables high-speed and synchronized image capture It is a camera with a global shutter CMOS sensor and high-speed data transfer. It is an industrial camera. It offers low noise, high dynamic range, and performance on production lines. It offers reliable performance. The lighting and pre-polarization in the operation of the invention, the interaction with the product, the second Polarization and reflection suppression, focusing and spectral filtering, image 30 The capture and transmission stages are explained in detail. 7 Infrared lighting, IR LED Module Mounted on Aluminum PCB (4) This module is provided by an LED that emits light at a peak wavelength of 950 nm. It consists of arrays and operates with approximately 20 W of electrical power, providing high performance. It produces high-intensity IR radiation. Produced for the stable operation of the IR LED module (4). Fast and efficient heat dissipation, Aluminum Heat Sink (5) Block 5 It is carried out through. The rays emitted from the LEDs are first passed through a Flexible Film Based IR Polarizing Filter (2) It is passed through. This filter polarizes the light in a single direction. Its twisted structure By covering all of the LEDs, it allows unpolarized light to reach the product at 10%. It prevents it from reaching the polarizer. Correct positioning and securing of the filter is essential. This is provided by the Filter Positioning Fixture (3). The fixture is inside the filter. It supports the curved sections, holds the outer edges from below, and thus the filter By compressing the Coated Optical Window Element (1) into the desired shape It helps to secure it. 15 Polarized IR light passes through the Coated Optical Window Element (1) It reaches the product surface. This window is optical thanks to the VisNIR anti-reflective coating. It increases permeability and, with its hydrophobic coating, prevents the retention of liquids and dust. In this way, negative effects that may arise from the external environment are minimized. 20 The product surface is protected by light, safety ink pigments, and label paper. They interact. Light absorbed by the ink pigments encodes the ink. while creating the designs, the mess from the banderol paper and ink Reflections distort the polarization direction. In contrast, reflections from bright surfaces... Light retains its polarization. 25 All rays returning from the product are re-coated to the Optical Window element (1) It passes through and is directed to the optical system. The camera lens looks at the product. Adjustable Angle IR Polarizing Filter (6) located on the side, in front of the LED 30 with flexible film-based IR polarizing filter (2) in a cross (approximately 90°) position. It is activated. Thanks to this arrangement, the polarization of the light coming from bright surfaces is reduced. The reflective components that protect against light cannot pass through the second filter and are suppressed. [Brandrol] The light that is diffusely emitted from the paper and ink, with its polarization broken, 8 It is partially permeable. Thus, parasitic reflections are eliminated, leaving only beneficial ones. The signal, which is the ink contrast, is transmitted to the camera system. Light passing through the polarization filter is processed by the Camera Lens Module (7). The lens focuses on the sensor. To capture images at close range, the lens and sensor are 5 inches apart. A 0.6 mm Camera Lens Riser (8) is placed between them. This adapter provides minimum By reducing the focal distance from 10 cm to approximately 3 cm, it gets closer to the surface of the sticker. It allows filming to take place. The Longpass Filter (9), located on the side of the lens facing the camera, is only for IR 10 It allows light to pass through. Ambient lighting, artificial light sources, and Visible spectrum components are blocked by this filter. This allows them to reach the sensor. The incoming signal consists only of the targeted infrared components. The filter is positioned through the lens. Lens-Filter Assembly: Ensures axial alignment and secure fastening. It is provided with the apparatus (10). 15 Light that passes through all optical processing steps is then processed in the final stage by the Industrial GigE Camera. (11) reaches the sensor. Thanks to the global shutter CMOS structure, it can reach moving products. Even with blurring, clear images are obtained. The camera captures... The images are transmitted to external systems at high speed in accordance with the GigE Vision standard. It transmits. Thanks to the design of the invention, controlled light can be applied to the product surface using IR illumination. It is applied by polarizing the source light and transmitting it only in the useful direction. Coated windows provide protection from external influences. 25 thanks to cross-polarization technology. Bright surface reflections are suppressed, and ink contrast is emphasized. Lens With the system, a clear image is obtained from a close distance. Thanks to the longpass filter (9) Only IR components are transmitted to the sensor. In the final stage, the industrial camera captures the image. It captures and transfers it to the system.

Claims

9 REQUESTS 1- The invention aims to solve the problem of coding done with secure ink in the Tobacco and... IR LEDs developed for use in the alcoholic beverage industry. 5 related to development in the camera module, which is supported by a polarizing filter. Its characteristic is; - A twisted connector that polarizes and transmits IR (Infrared) LED light to the product. Its structure allows unfiltered light to pass through by covering the LED and into the product. Flexible film-based IR polarizing filter (2) that prevents it from reaching - Flexible film-based IR polarizing filter (2) curved 10 positioning and fixing with the optical window element (1) optical window element (1) which provides and supports the outer parts from below polarized filter that helps to compress and fix it. positioning fixture (3), - 15-inch aluminum PCB with 950 nm IR LED array providing illumination. mounted IR LED module (4), - Mounted on the side of the camera lens facing the product and in front of the LEDs. Cross-polarization is created with a polarizing filter to reduce surface reflections. It is characterized by containing an adjustable angle suppressing IR polarizing filter (6). It is done. 20 2- This relates to improvements in the camera module as in Request 1, and its feature is the system. protection against external factors and flexible film-based IR polarizing filter (2) optical window with anti-reflective and hydrophobic coating that ensures fixation. It contains element (1). 25 3- This relates to improvements in the camera module as in Request 1, and its feature is; image camera lens module (7) that focuses on the sensor and determines the resolution It includes. 4- This relates to improvements in the camera module as in Claim 1, and its feature is; camera mounted on the side of the lens facing the camera and emitting IR LEDs It transmits light to the sensor with high transmittance, whether for ambient lighting or artificial light. by blocking visible spectrum components from light sources Longpass filter (9) that allows the targeted IR components to reach the camera It includes. 5- This relates to the camera module development as in Claim 1, and its feature is Global 5. shutter CMOS sensor, high-speed data transfer and synchronization GigE camera (11) is an industrial camera that enables image capture. It includes. 15 25