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Optica Latin America Optics and Photonics Conference

Letter of Invitation

Individuals requiring letters of invitation to obtain travel visas may access the online form here

Important information regarding Visa Invitation Letters:

  • Your name must be listed exactly as it appears on your passport. Any differences between the name on your passport and the name on your invitation letter or other documentation could lead to a delay and/or denial of your visa.

  • If you are presenting a paper, include the title and session in which the paper will be presented.

  • Please note that each individual requesting an invitation letter must fill out a separate form.

  • All letters of invitation will be sent by a locked PDF unless otherwise requested. If you require a paper copy please provide a courier
    account number or credit card number with expiration date with the original request.

  • Please allow up to 15 business days to process your request.

  • Optica Management reserves the right to request further information regarding the company or affiliation of the attendee to ensure the validity of requests. Meeting attendees do not need to wait until your paper is accepted to request a Visa Invitation Letter.

  • Optica is unable to contact Embassies in support of an individual attempting to gain entry to attend a meeting.

  • We recommend that you secure your travel visa before registering for the conference as cancellations after the preregistration cutoff may
    result in a cancellation fee.

For questions about the Visa Invitation Letter application process, email

Visa Information 

 If you need a travel visa, begin the visa application process now! The application process can take up to 6 months or more. We strongly encourage you to apply for your visa as early as possible, but no later than three months before you wish to enter Brazil. Strict security requirements may cause delays in visa processing. More information about applying for a visa to Brazil is available here
Online Resources:

Visa and Non Visa Required Countries
Determining Requirements for Brazil Travel
How to Apply

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