All you need to know about different patterns of Optical Design

Nowadays, the growing demand for optical design products has increased the search for highly skilled and experienced optical designers. The emerging technology has made it easier to hire an efficient optical designer. A good designer in optics has thorough knowledge about the design aspect and knows how to use the latest technologies to manufacture a unique optical device. These expertise work hard to meet all your design needs in the best possible manner.

What is Optical Design?

The term describes the procedure of refracting or reflecting of various elements in an optical system to meet a set of performance parameters. The system is related to visible light as well as invisible light rays. The optical design solutions are manufactured using high quality materials and well tested to ensure the long term usage without any problem.

More About Opto Mechanical Systems Design

Optomechanics is termed as part of optical engineering that implies the maintenance of shape and position of an optical system surface. Opto-mechanical system design focus on deflection rather than the mechanical engineering exercise. In other words, optical system performance relies on the position and orientation of optical element.

Designing Lens and Mirror Optical Systems

Lenses are the most crucial device in the field of optics. It is a transparent object with two curved surfaces. The light rays get refracted after falling on lens and get refracted to make an object look smaller or bigger than its normal size. Lens are made of glass, plastic or fiber and commonly used in commercial, industrial, medical and other areas.

Custom lenses can be designed by contacting a good reliable optical design consultant. For meeting your business needs you can customize lens accordingly. These lens are optimized for large format sensors to offer greater resolution. You get the lens with great imaging experience. Thus, experienced optical design engineers manufacture high quality optical devices to meet your unique requirements.

Once the optical design passes the prototype stages to deliver world-class design optical system design experts can be contacted. Moreover, you get integration of optical and mechanical engineering with quick prototyping and bulk of custom lens manufacturing.

Designing and Developing Reflectors and LED

Reflectors are those devices that reflect light rays onto an object. Also available in different shapes, sizes and colors and used in a wide variety of applications. LED optics comprises of primary optics that has concentrators and secondary optics for circular, square or rectangular areas. The LED systems offers high system transmission, reduction of stray light and short system length compared to conventional illumination systems.
How Optical Design Experts Can Help

A good optical designer is well versed to face any optical challenge. They are experienced in optical and electrical designing projects. They have a thorough knowledge about the design aspect and use latest technologies and tools to manufacture a unique optical device. These engineers can create custom solutions to meet your specific business needs.

In addition, they have working experience in planning, designing and developing reflectors and LED collimators, zoom lenses, laser marking system and many more. These are also proficient in using software needed to produce high quality optical devices. Knowing the traditional and modern optical techniques, optical modelling and prototyping these experts provide the best optical solutions.

At Optics for Hire, the optics design consulting services of engineers provide optical designing opto-mechanical systems for a wide range of applications including optical media, biomedical devices, illumination and imaging systems etc. The designers have created a wide range of products to meet specific client needs. All the team members are highly qualified to complete all optical, opto-mechanical and LED design projects with utmost precision and as per the client specification.

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Opto -mechanical Engineering To Design Better Optical System

Optimizing a design is done to meet the performance goals. An optical engineer works closely with mechanical engineering for tolerance as well as specifying the electronic detection of the signal. This requires very tight tolerances so that the product design can be easily designed. This results in increasing the cost and other problems in production. Thus, Optical engineers by including data in their designs can work up with mechanical engineers.

Optical and mechanical engineers working together can turn an optical system design into a real product. The process is costly and error prone and engineers sometimes face difficulty solving the issue. Optical and mechanical engineers work using design software. With expansion of the toolbox of optical engineers it is possible to optimize mechanical designs for multiple configurations and perform structural analysis.

Moreover, optical systems are made up of multiple configurations. Optimizing multiple configuration is a process to accumulate whole systems as a group for each set of position. The space between the elements is done to adjust the focal length, zoom and focus. Thus, both the optical and mechanical design can be optimized to accommodate each configuration.

Opto mechanical Design ensures that Optical components are placed the right way

All the optical component are positioned the right way is ensured by opto mechanical design. The design provide effective solution that gives measurable results. There is an extreme rise of optimal stature due to high-octane instrumentation capacities and the facilities. Mechanical engineers find the designing methodology perfect for testing requirements. Thus, optical design achieves a significant level of advancement and growth in past few years.

However, the physical and environmental effects should be analysed before producing a design. To meet the needs of industrial optics optomechanical design is a great option. It has been adopted by many optical engineering services and fulfills the vital needs providing the best possible results to the users.

In the present scenario relying on optical phenomenon is imperative. Almost many optical engineering services are taking the advantage of this technology. The professionals from the lens design industry have great hope from this technology. It helps to solve the issues related to the seating of the lenses as well as other problems.

Furthermore, increasing demand for more sophisticated products is posing challenges. Everyone looks out for the high quality lenses and other optical systems. As a result using latest technology for producing optical products is a boon. The optical design consultants make smart plan to fulfill the production smoothly. All this lead to provide optical solutions meeting the highest standards and effectively find solutions to challenging problems. Optical engineering consulting team have the knowledge and expertise from specification to verification, implementation and finally manufacturing to deliver a product of extremely high quality.

With optical engineering consulting you can develop the finest design according to requirement. It aims to fulfill the needs according to your budget. This process may go from design to manufacturing and finally testing before launching the instruments. At Optics for hire, you get the optical system design available according to your specific requirements .

If you are looking for a truly and unique optical design solution, you’re at the right place. Optics for Hire consists of experienced and highly skilled optical engineers and designers, LED specialists and more. Over the years, our experts have created extensive optical solutions. As a premier optical solutions provider, fulfilling customer product requirements in a timely, cost-effective manner. Thus, Optics for hire offers complete optical engineering consulting service that includes opto-mechanical design etc. Get optical engineering design option that meets your standards and help your business stand out from the crowd.

How Skilled Optical Design Consultants are beneficial?

How Skilled Optical Design Consultants are beneficial?

In the fast paced world, there is a constant need for new engineering and development across all verticals. Commercial sectors have constant requirement of high quality electro-optical products for various uses. It is obvious to look for experienced optical design consultants for advanced electronics solutions.

However, with changing time and increasing demand the optical design teams are facing challenges. Everyone looks for high quality lens and such other optical systems that ensures the durability. Therefore, to get the best quality services on time hiring an optical engineering consultant is important.

Optical Engineering and it’s Scope?

Optical engineering is a progressive and exciting field. Making use of optics the consultants helps to do something productive. Optical engineers design and develop devices such as lasers, lens and fiber optics that use the properties of light. With working on various usage forms of light they make our life more comfortable.

Various forms of lasers are used in different kinds of applications. In medical field the laser is used to cut out birthmarks and cancerous growths etc. In homes the laser light is used to play your favorite music. Also, the advance technology laser printers and scanners show how laser technology has merged into our lives.

Optoelectronics: A Good Choice

Optoelectronics deals with designing devices that can detect or emit light in any part of the spectrum. Nowadays, it has become a very important field on its own.

In developed countries, optical technologies are widely used for system development in fields of communication, biomedical application, industrial manufacturing etc.
The optical designers use latest technologies to manufacture wide variety of optical products. An important aspect in optical designing is to make such decision that should not affect the production process. Proper planning is needed to ensure the accurate size, quality and performance of each product.

Choosing the best optical design consultants ensures making smart plan to meet all aspects smoothly. Whenever you look for optical consulting, check for the knowledge and expertise to get you a product of extremely high quality. The effective solutions from the best of optical design consultant are personalized according to your needs. With their help you get the kind of technology you are looking to use.

Benefits Offered by an Experienced Optical Design Consultant

No doubt, working with a good consultant allows you to use your own resources. The major objective is to produce standard optical design products to meet the varied business needs. A competent optical design consultant can take care of various aspects related to illumination design, imaging, lens design etc. Also, an optical design consultant also helps getting repeat customers. Offering the high quality optical designs will make the clients satisfied and they approach again. In short the experienced optimal design consultants can fulfill the needs of organizations. In this way, technology and engineering proficiency support varied customer needs.

An optoelectronics consultant have years of experience in fields such as electronics software, hardware, electrical circuits etc. They focus on designing and prototyping of electronics applications. They are expertise in different methodologies and technologies required for developing a high-end product. Also, they are proficient in using software needed to produce high quality optical devices.

If you are looking for specialized custom optics services then you got a way out. Our technical experts at Optics for Hire are highly skilled in optical design. These techies analyze the specifications according to requirements and offer new methods to achieve goals. The team of designers and engineers constantly strive to meet the optics design needs of varied industries. After knowing the specific needs of clients the engineering consultant at Optics for hire will design the specific products. Thus, you get quality optical instruments used in optical media, biomedical devices, imaging systems and many more.

How does Depth of Field affect Telecentric Lenses?

It is a general misunderstanding that the telecentric lenses innately enjoy a preponderant depth of field than the usual conventional lenses. While depth of field is still conclusively governed by the wavelength and f/# of the lens, it is true that the telecentric lenses can have a greater adaptable depth of field than the conventional lenses due to the symmetrical glaring on either side of best focus. As the part under examination shifts toward or away from the lens, it will follow the angular field of view (or the main ray) that is correlated with it. In a non-telecentric lens, when an object is shifted in and out of focus, the part blurs asymmetrically due to the prolix and the magnification change that is correlated with its angular field of view. However, telecentric Lenses, blur symmetrically since there is no angular component to the field of view. In practice, this means that features such as edges possess their center of mass location; a judicious measurement can still be made when the object is beyond best focus as long as the variation remains high enough for the contrivance being used by the machine vision system to work properly.

While it may seem counterintuitive, blur can be used advantageously in certain applications with Telecentric Lenses. For example, if a machine vision system needs to find the center location of a pin, as shown in Figure 3a, the transition from white to black is quite sharp when the lens is in focus. In Figure 3b, the same pin is shown slightly defocused.

The Same Pin Imaged both In and Out of Focus

Figure 3: The Same Pin Imaged both In and Out of Focus. Note that the transition from white to black covers many more pixels when the lens is slightly out of focus (b). This can be advantageous!

Looking at a plot of the image grey levels from a line profile taken across the edge of the part, as in Figure 4, the slope of the line is much shallower for the slightly defocused image, as the pin edge is spread over more pixels. Due to the symmetric blurring of the Telecentric Lens, this blur is still usable as the centroid has not moved and the amount of sub-pixel interpolation needed is decreased. This reduces sensitivity to grey level fluctuations caused by sensor noise and allows the pin center location to be found more reliably and with higher repeatability.

Plot showing the difference in Slope between a Focused and Defocused Edge

Figure 4: Plot showing the difference in Slope between a Focused and Defocused Edge where the defocused edge takes up more pixels; searching the edge becomes easier without relying on sub-pixel interpolation.

 Article is posted by Opticsforhire.com –  An Optical Design Consultant.

Using Structured Illumination

Illumination is a censorious intrinsic of any machine vision system, and can often become the digression between a good imaging system and of a great one. The illumination location and wavelength requires to be solely considered for each appositeness not only does, but certain systems require structured illumination to aggrandize system performance.

Structured illumination takes advantage of straight-out impressions of light to detain the geometric contour and intensity of objects. A compelling 3D system can be cobbled up by illuminating objects with different impressions, such as dots, lines or grids, while reducing cost, parts, and multiplicity.

As a well-deliberated system aggrandizes measurement exactitude, it is substantial to know clearly that structured illumination isn’t solitary, and assured structures should be used to achieve certain measurements. For example, a dot grid impression may be good enough to scrutinize a few flecks on a gadget, but a line or a multiple line impression is needed to measure an gadget’s 3D contour.

The table given below shows some conventional structured illumination impressions and their prototypical appositeness.

Common Structured Illumination Patterns
Structured Illumination Method of Determination Purpose
 1-usi2-usi.jpg Triangulation Based Determining the dimensions of most objects while the object is scanned
 3-usi4-usi Shadow and Triangulation Based Determining the dimensions of refractive objects while the object is scanned
 5-usi6-usi Distortion Based Determining the depth information at multiple discrete points in a single exposure

Article is posted by Optics For Hire – lens design and manufacturing Consultant.

The Advantages of Telecentricity

To be able to perform repeatable quickly, high exactitude measurements is quite critical to aggrandize the performance of many automation vision systems. For these kind of systems, a telecentric lens grants the highest possible verity to be obtained. Here we will discusses the solitary performance characteristics of Telecentric Lenses and how telecentricity can jounce a system’s performance.

What is Zero Angular Field of View and the Elimination of Parallax Error?

Conventional lenses have an angular field of view in such a way that as the distance between the object and lens cumulates, the magnification shrinks. This is exactly how the human vision behaves, and dispenses to our depth sagacity. This angular field of view consequences in parallax, also known as perspective error, which downturns exactitude, as the inspected measurement of the vision system will change if the object is displaced (even when remaining within the depth of field) due to the magnification tempering. Telecentric Lenses dispose of the parallax error characteristic of standard lenses by having a constant, non-angular field of view; at any outpost from the lens, a Telecentric Lens will always have the same field of view. See figure below to understand the difference between a non-telecentric and a telecentric field of view.

Telecentric Lens

Figure 1: Field of View comparison of a Conventional and Telecentric Lens. Note the conventional lens’s angular field of view and the Telecentric Lens’s zero angle field of view.

A Telecentric Lenses’ invariable field of view has both benefits and suppression for gauging applications. The primary advantage of a Telecentric Lens is that its magnification does not modify in respect to depth. The figure below shows two different objects at different working stretches, both imaged by a Fixed Focal Length (non-telecentric) Lens (center) and a Telecentric Lens (right). Take a note that in the image taken with a Telecentric Lens, it is almost impossible to say which object is anterior of the other while with the Fixed Focal Length Lens, it is quite evident that the object that emerges smaller is located farther from the lens.

Optical-Lens

Figure 2: The Angular Field of View of the Fixed Focal Length Lens decodes to Parallax Error in the Image and makes the two Cubes emerge to be of contrasting sizes.

While the above figure is radical in terms of a dynamic distance shift, it delineates the importance of minimizing parallax error. Several automated investigation tasks are imaging objects that run through the field of view of an imaging system, and the location of parts is seldom perfectly repeatable. If the working distance is not indistinguishable for each object that the lens is imaging, the measurement of each object will dissent due to the magnification shift. A machine vision system that yields different results based on a magnification calibration error (which is compulsory with a Fixed Focal Length Lens) is a vulnerable solution and cannot be used when high fidelity is compulsory. Telecentric Lenses remove the concern about measurement errors that would else occur due to factors such as a vibrating conveyor or vague part positions.

Article is posted by Optics For Hire – lens design and manufacturing Consultant.

Understanding Resolution

Understanding a manufacturer’s specifications for a lens can greatly simplify the research and purchasing processes. In order to know how a lens works, it is critical to understand resolution, magnification, contrast, f/#, and how to read common performance curves including Modulation Transfer Function (MTF), Depth of Field (DOF), Relative Illumination, and distortion. Resolution is a measurement of an imaging system’s ability to reproduce object detail, and can be influenced by factors such as the type of lighting used, the pixel size of the sensor, or the capabilities of the optics. The smaller the object detail, the higher the required resolution.

Dividing the number of horizontal or vertical pixels on a sensor into the size of the object one wishes to observe will indicate how much space each pixel covers on the object and can be used to estimate resolution. However, this does not truly determine if the information on the pixel is distinguishable from the information on any other pixel.

As a starting point, it is important to understand what can actually limit system resolution. An example can be shown in Figure 1 a pair of squares on a white background. If the squares are imaged onto neighboring pixels on the camera sensor, then they will appear to be one larger rectangle in the image (1a) rather than two separate squares (1b). In order to distinguish the squares, a certain amount of space is needed between them, at least one pixel. This minimum distance is the limiting resolution of the system. The absolute limitation is defined by the size of the pixels on the sensor as well as the number of pixels on the sensor.

Camera Resolution Limit

Figure 1: Resolving Two Squares. If the space between the squares is too small (a) the camera sensor will be unable to resolve them as separate objects

The Line Pair and Sensor Limitations

The relationship between alternating black and white squares is often described as a line pair. Typically, the resolution is defined by the frequency measured in line pairs per millimeter (lp/mm). A lens’s resolution is unfortunately not an absolute number. At a given resolution, the ability to see the two squares as separate entities will be dependent on grey scale level. The bigger the separation in the grey scale between the squares and space between them (Figure 1b), the more robust is the ability to resolve the squares. This grey scale separation is known as contrast (at a specified frequency). The spatial frequency is given in lp/mm. For this reason, calculating resolution in terms of lp/mm is extremely useful when comparing lenses and for determining the best choice for given sensors and applications. Contrast is explained in more detail in this application note.

The sensor is where the system resolution calculation begins. By starting with the sensor, it is easier to determine what lens performance is required to match the sensor or other application requirements. The highest frequency which can be resolved by a sensor, the Nyquist frequency, is effectively two pixels or one line pair. Table 1 shows the Nyquist limit associated with pixel sizes found on some highly used sensors. The resolution of the sensor, also referred to as the image space resolution for the system, can be calculated by multiplying the pixel size in μm by 2 (to create a pair), and dividing that into 1000 to convert to mm :

optics

Sensors with larger pixels will have lower limiting resolutions. Sensors with smaller pixels will have higher limiting resolutions.

With this information, the limiting resolution on the object to be viewed can be calculated. In order to do so, the relationships between the sensor size, the field of view, and the number of pixels on the sensor need to be understood.

Sensor size refers to the size of a camera sensor’s active area, typically specified by the sensor format size. However, the exact sensor proportions will vary depending on the aspect ratio, and the nominal sensor formats should be used only as a guideline, especially for telecentric lenses and high magnification objectives. The sensor size can be directly calculated from the pixel size and the number of active pixels on the sensor.

pic1

pic2

Pixel Size (μm) Associated Nyquist Limit (lp/mm)
1.67 299.4
2.2 227.3
3.45 144.9
4.54 110.1
5.5 90.9

Table 1: As pixel sizes get smaller the associated Nyquist limit in lp/mm rises proportionally.

Article is posted by Optics For Hire – lens design and manufacturing Consultant.