Definition of CCD sensor - ccd sensor array

 2024-09-04 23:59:27

Event tickets may always be added to general admission reservations; however, we encourage you to purchase Illumination tickets in a separate transaction, if possible, to ensure that the scan codes are kept separate.

DreamWorks

Celebrate the holidays and marvel at how light transforms a magnificent landscape at Illumination: Tree Lights at The Morton Arboretum.

When light rays with a specific orientation hit the surfaces of either parabolic or elliptical mirrors, they create a bundle of reflected rays. This bundle converges at a single point known as the focus.

To minimize divergence of a collimated beam, two factors must be balanced: focal length of the collimating system and size of the light source. The diagram below demonstrates the approximate divergence of a collimated beam:

Exciting features and immersive installations in this festive experience will delight all ages along a one-mile path that is fully ADA compliant.

Arboretum members receive the lowest ticket prices, with a 20% discount on all tickets. Become a member to get the best pricing for Illumination tickets.

illumination中文

In this article we will discuss how collimated light beams are created, lenses and coatings that can be applied to manipulate a broad spectrum of wavelengths, and practical applications.

Dayy Photonics offers fiber coupled light sources but also free space products with a collimated beam. We can customize our light sources to provide the desired beam diameters and minimum divergence angle.

New for 2024 is an Illumination sensory evening on Tuesday, December 3, from 4:30 to 9:30 p.m.; last entry is at 8:00 p.m. This modified experience will feature static lights and music at low volume. Tickets are available in a limited capacity for the event on this night to provide a sensory-sensitive environment.

Animation

Treats Double Fudge Brownie Rice Krispies Treat™ Peppermint Bark Frosted Holiday Cookie Jumbo Pretzel with Dipping Sauce S’mores Kit

Craft beer lovers won’t want to miss IllumiBrew. At this event for adults 21 and older on Friday, November 15, enjoy a first look at the newest version of Illumination while sampling local brews along the trail.

A full dining and beverage menu featuring freshly made sandwiches, salads, burgers, and more is available from the Ginkgo Restaurant, located inside the Visitor Center. The restaurant is open until 8:00 p.m. during Illumination. Guests can purchase sandwiches, salads, and soups, along with assorted alcoholic and nonalcoholic beverages.

Because Illumination is an outdoor event in winter, on very rare occasions the Arboretum may cancel an evening or temporarily close the event until weather passes. Many factors are considered, including predictions from the National Weather Service and other weather services, before making a decision that has an impact on guests. If Illumination is canceled or temporarily closed for part of an evening, ticket holders will be notified via email, and notice will be posted to the Arboretum’s website homepage. We will honor tickets on alternate nights, schedule permitting. For more information, email or call the ticket line at tickets@mortonarb.org or 630-725-2066 between 9:00 a.m. and 4:00 p.m. daily (except holidays).

Plan-ahead pricing is adjusted daily based on a variety of factors, such as remaining tickets available, weather conditions, and most popular times. As those variables change, ticket prices may go up for particular times and dates. Prices will not go down from those listed at the time you check the website. The further in advance you purchase your tickets, the more you save.

To achieve collimated light, there are two theoretical methods: a) positioning an extremely tiny source precisely at a distance equal to the focal length of an optical system with a positive focal length or b) observing the point source from an infinitely distant location. In reality, neither of these situations is achievable. As well, according to diffraction theory, even if one of these conditions were met, there would still be a certain degree of spreading or divergence.

An AR coating reduces the reflection of the light from the surface. AR coatings are used to reduce reflection loss and hence improve transmission efficiency, while at the same time reducing stray light and ghost images.

A temperature-activated, color-changing ceramic mug will be available to purchase for $18 (price includes tax) on all Illumination and Electric Illumination dates. The purchase includes any warm beverage choice (alcoholic or nonalcoholic). The mug will feature a photo of the Treemagination light display, which appears once the mug is warm.

The Morton Arboretum offers a way to make changes to existing ticket reservations for Illumination and Electric Illumination ticket holders. You can use this rebooking tool if you are changing your tickets from one date to another, even if there is a cost difference between the two dates. Only dates and times that are still available will show during the rebooking process.

Illumination movies

Tuesday, December 3, from 4:30 to 8:00 p.m., will be a sensory evening of Illumination, new for 2024.This quiet walk will feature static lights and music at low volume.

Electric Illumination offers a special late-night experience from 8:30 to 10:00 p.m. on three special weekends in November and December, each with a unique theme. Adults 18 and older will enjoy a curated playlist of music synchronized to breathtaking light displays.

A secluded glade is strung with fairy lights, kinetic LED tall grasses honor a Midwest native species, and trees light up with a hug. New this year, Celebration Circle is an interactive light display in The Gerard T. Donnelly Grand Garden featuring four sets of illuminated tree-shaped installations, each synced to the music of a different instrument.

A collimated beam is light with weak divergence, meaning it’s a flow of photonics that move in parallel to one another, without dispersing. The beam remains concentrated in a specific direction, and its energy is evenly distributed along its path. This distinct characteristic of collimated beams makes them valuable in different industries, such as scientific research, engineering, and medical applications.

If you have questions, you can contact the ticket line by email at tickets@mortonarb.org or by phone at 630-725-2066, Monday through Sunday (excluding holidays), 9:00 a.m. to 4:00 p.m.

Tickets for available dates and times can be purchased online or in person. Up to 10 Museums for All tickets can be purchased. When buying tickets online, a valid LINK or WIC card is required to receive the discounted rate. Online ticket purchasers will receive an email confirmation and must show a valid LINK or WIC card with their tickets at the entrance on the night of the event.

The diagram below shows a beam of initial diameter x1 being shrunk to a final diameter of x2 and the distance between the two lenses is d. If we wanted to expand the beam, the plano-concave (negative focal length) lens would be placed first and have focal length f1, and the plano-convex lens would be placed second and have focal length f2.

Achromatic lenses are particularly good for collimating when a broad spectrum of wavelengths is present. They typically consist of two optical components cemented together, usually a positive low-index (crown) element and a negative high-index (flint) element.

Prices are determined based on a number of factors, including attendance patterns, popular holidays and special events, and weather. For busier periods with higher estimated attendance, prices will reflect high demand. For quieter attendance days, prices will be lower.

Located in Centennial Plaza in The Grand Garden, Celebration Circle is a new Illumination experience featuring four interactive sets of abstract trees. Each tree lights up with dynamic colors that are synced to a different instrument: grand organ, bass, bells, and strings.

Prices for Illumination and Electric Illumination vary based on the day and time. Plan-ahead pricing allows you to get the best deal on Illumination and Electric Illumination tickets when you buy in advance. The farther in advance you purchase tickets, the more you save!

Chromatic aberration of a single lens causes different wavelengths of light to have differing focal lengths, whereas an achromatic doublet brings red and blue light to the same focal point.

Guests directed to a secondary lot (Parking Lot 21), near the Thornhill Education Center on the Arboretum’s West Side, can take advantage of a shuttle bus that will transport them to the main event area. Please note that this is the only shuttle bus during Illumination and it only runs between Parking Lot 21 and the Visitor Center. The bus does not have a wheelchair lift.

The Morton Arboretum welcomes visitors with service animals to Illumination. Please note that pets are not permitted at the Arboretum except on special dog admission days.

Illumination ticket purchases are nonrefundable. However, guests may be able to exchange tickets in advance for a fee of $1 per ticket, depending upon event capacity and at the discretion of the Arboretum. Tickets can be rebooked (prior to their original start time) using the Arboretum Rebooking Tool; guests who need additional assistance can also email the help desk or call 630-725-2066. If the Arboretum cancels a night of Illumination (in whole or part), we will accommodate ticket holders according to the cancellation policy.

Please note that this tool is currently only available for use when rebooking Illumination or Electric Illumination tickets.

If you do not have a disability placard and someone in your party has mobility concerns, you are also welcome to drop off passengers in the circle drive adjacent to the Visitor Center before you park. Please notify the parking attendants and they will direct you accordingly.

This Illumination-specific discount is an extension of the popular Museums for All program, a partnership between the Institute of Museum and Library Services (IMLS) and the Association of Children’s Museums (ACM).

On days with four or more inches of snow, Illumination attendees are welcome to bring snowshoes or cross-country skis to the Arboretum during usual daylight hours. During Illumination, the East Side of the Arboretum will close at 3:00 p.m. to prepare for opening of the exhibition each evening at 4:30 p.m. Only the West Side is available for skiing or snowshoeing prior to mid-January, when Illumination equipment is removed on the East Side). Once Illumination is over rentals will be available based on snowfall.

Arboretum staff make best efforts to clear the path of ice and snow. Crowds are generally lighter on Tuesday, Wednesday, and Thursday, making it easier to navigate the trail.

A collimator lens system, composed of a set of lenses, can be employed to create a collimated beam. In this method, the light source is situated at one end of the system, and the lenses are arranged in a way that they refract and concentrate the light, resulting in a parallel beam. This technique is commonly utilized in laser diodes, telescopes, and other optical devices that necessitate a collimated beam.

An achromatic lens comes in a variety of configurations, most notably, positive, negative, triplet, and aspherized. It is important to note that it can be a doublet (two elements) or triplet (three elements); the number of elements is not related to the number of rays it can correct. In other words, an achromatic lens designed for visible wavelengths corrects for red and blue, independent of it being a doublet or triplet configuration. Below are diagrams outlining the four varieties of achromatic lenses.

The Arboretum has a small number of nonmotorized wheelchairs available on loan free of charge in the Visitor Center on a first-come-first-serve basis. Guests must leave a driver’s license or other photo ID to check out a wheelchair. Because the supply is limited, we recommend bringing a wheelchair to the Arboretum, if one is needed. Personal mobility scooters may also be used on the trail.

The Arboretum has the expertise and advice to help you beautify your home landscape, improve your community, and advocate for trees.

Warm up by a crackling fire and roast marshmallows for s’mores, stop in at the concession tent for snacks and beverages along the Illumination trail, or sit down to a delicious meal at the Ginkgo Restaurant in the Visitor Center while you view a laser light finale on Meadow Lake.

There are different types of lenses used to generate a collimated beam, each with their own disadvantages and advantages. We will discuss a few options below.

Please be aware that Illumination features moving and flashing lights along the trail. There are no strobe lights in the exhibition. Laser features are directed away from guests and follow International Laser Display Association safety standards.

Parking is available near the entrance for those with a disability placard on their vehicle—please notify the parking attendant as you drive in. Otherwise, parking is first come, first served, and is directed by parking attendants.

Universal Pictures

Please note that there will be a $1 charge per ticket for any changes made to Illumination tickets, plus any changes in the price of the tickets.

To look up an existing order, enter your order ID and last name in the field below. You can find your order ID listed on the “Order Summary” email that was sent to you from tickets@mortonarb.org.

Guests may borrow sensory supports such as headphones, sunglasses, fidgets, or a copy of the Illumination social narrative (English, Spanish) when they arrive. Families can use the social narrative to help prepare for their visit. Any loaned items should be returned to the Information Desk in the Visitor Center before departure.

A concession tent on Frost Hill along the Illumination trail will serve snacks and hot beverages. S’mores are available for roasting on the fire pits. The concession tent will be open from 4:30 to 9:00 p.m. during Illumination.

Illumination AnyDay tickets are special, single-use tickets that can be used once by either an adult or a child (age 4 and older), at any entry time, on any day of Illumination.

Yes. The Illumination trail is a one-mile paved path that is ADA compliant and fully accessible to guests with limited mobility. Please see the Illumination Accessibility section for more information.

To learn more about our light source options for collimated output, contact DAYY Photonics to talk about the specialized needs in your application.

The Illumination trail is a one-mile paved path that is ADA compliant for people with limited mobility. The exhibition is not visible or accessible by car.

Aspheres are often used to collimate light that is leaving a fiber or laser diode. The surface of an asphere is designed to eliminate spherical aberration, as spherical aberration is often what prevents a single spherical lens from achieving diffraction limited performance when focusing or collimating light for monochromatic sources.

Aspheric lenses have a varying curve across the lens, whereas traditional lenses have a circular shape and could be part of a larger circle or sphere. Aspheric lenses tend to be thinner and flatter compared to their traditional lens counterparts.

The amount you save varies, but the prices listed for each date will always be the lowest option at that time, for that particular date. Prices will never decrease but they may increase, so buying ahead is always your best option.

Illumination ticket holders may enter the Arboretum after 4:30 p.m., but will not be able to access the Illumination trail or Visitor Center until the time listed on their tickets. Due to often cold weather conditions, we encourage ticket holders to arrive as close as possible to the time on their tickets for the best experience.

Illuminate

Minions

Illumination AnyDay tickets are special, single-use tickets that can be used once by either an adult or a child (age 4 and older), at any entry time, on any day of Illumination.

Monday, November 18 Tuesday, November 19 Monday, November 25 Thursday, November 28 (Thanksgiving) Monday, December 2 Monday, December 9 Tuesday, December 10 Monday, December 16 Tuesday, December 17 Tuesday, December 24 (Christmas Eve) Wednesday, December 25 (Christmas Day)

Each type of plano lens has its specific properties and applications, making them suitable for different optical needs. Plano lenses are typically a cost-effective option when your minimum divergence specification can be relaxed, such as systems that do not require the beam to stay collimated for long distances.

There is something for everyone to enjoy during Illumination! This enchanting event is perfect for celebrating the holiday season, special occasions, family outings, date nights, or wintertime fun with friends.

Ticket holders who make the choice not to attend Illumination based on their personal circumstances may request a ticket exchange, depending on schedule and ticket availability, for a $1 fee per ticket. Refunds are not available. For more information, use the Arboretum Rebooking Tool, email the help desk, or call the ticket line at 630-725-2066 between 9:00 a.m. and 4:00 p.m. daily (except holidays).

Beverages Hot Chocolate Hot Chocolate with Baileys® Hot Chocolate with Peppermint Schnapps Hot Cider Hot Cider with Spiced Rum Boxed Water™

Despicable Me

Warm up by a crackling fire and roast marshmallows for s’mores, stop in at the concession tent on Frost Hill for snacks and beverages, or sit down to a delicious meal at the Ginkgo Restaurant to view a laser light finale on Meadow Lake.

In the real world, light is collimated with a collimator device, which essentially is a lens or curved mirror where the focal length or curvature radius is chosen such that the originally curved wavefronts become flat. Of course, the beam radius at the position of the lens or mirror should be large enough to obtain a low divergence. Any residual divergence can be fine adjusted via the position of the lens or mirror along the beam direction. The collimation can be checked, for example, by measuring the evolution of beam radius over some distance in free space with certain kinds of interferometers.

Through the Arboretum’s participation in the Museums for All program, a limited number of reduced-rate Illumination tickets are available on select dates for guests with a state-issued Electronic Benefits Transfer (EBT or LINK) card, or a valid WIC card. Tickets may be purchased online or in person, as long as the date and time is not sold out. When buying tickets at the gatehouse, purchasers are required to show a valid LINK or WIC card to receive the discounted rate. When purchasing online, purchasers will receive an email confirmation and must show a valid LINK or WIC card with their tickets at the entrance on the night of the event.

Arboretum members receive the lowest ticket prices, with a 20% discount on all tickets. Become a member to get the best pricing for Illumination tickets.

Support the Arboretum’s work to create a greener, healthier, more beautiful world where people and trees thrive together.

ComEd is sponsoring a limited number of discounted Illumination tickets. Receive a $5 discount on Illumination tickets by using the code COMEDLIGHTS2024, while supplies last. Supply is limited and guests are encouraged to get their tickets using this code as soon as possible once tickets go on sale October 15. Arboretum members are not eligible to use the discount code, as members already receive the best price on all Illumination tickets. The discount code is not valid for Electric Illumination, IllumiBrew, or the Illumination Sensory Night. If the code does not apply the $5 discount during checkout, those tickets are sold out.

AR coatings are applied via a series of layers adhered to the front and back of the lenses. These layers block certain wavelengths of light, helping to reduce reflection.

With plan-ahead pricing for Illumination and Electric Illumination, choose the price, date, and time that best fit your budget and schedule. The further in advance you purchase your tickets, the more you save!

Achromatic lenses provide users with the ability to regulate the field of view, collection efficiency, and spatial resolution of their setup. They also enable the configuration of illumination and collection angles, which is beneficial for sampling purposes.

Collimated beams find practical use in various fields such as scientific investigations, laser advancements, sensors, medical imaging, and industrial processes like laser cutting and welding.

To collimate a diverging beam, we can use lenses with different focal lengths. The resulting diameter of the collimated beam increases as the focal length becomes longer. Assuming an initial tight focus and the subsequent expansion of the beam over a long distance, the distance between the focus and the collimation lens should be equal to the focal length. Using this information, the radius of the collimated beam can be determined by multiplying the half-angle of the beam divergence (or more precisely, its tangent) by the distance.

News