What's New in HUD Solution 2018

The new 2018 dedicated solution has 3 ambitions
to make you see HUD virtual prototyping in a new light:

Reinforce your Strength, Expand your creativity and rEvolutionize
your process by stretching the limits of digital transformation.


Include electronics within HUD optical assessment
Comply with SAE standard for automotive HUD


Benefit from innovation in digital ligting
The ghostbuster of vehicle HUD
Assembly tolerancing of automotive HUD


Revolutionnize HUD integration in automotive
Take the next step in HUD augmented reality
Reach the perceived quality target


Include electronic processing within optical assessment
Include electronic processing within optical assessment

Electronically correct the optical defects of your HUDs -induced by the windshield and mirrors-  by pre-processing the projected images.

With ANSYS SPEOS 2018, perform dedicated HUD optical system analysis, to easily and quickly generate data feeding the warping algorithm. This way, you not only evaluate  the optical system, but also the global system, including the embedded software.

Additionally, you can simultaneously generate pre-distorted images with the optical performance analysis feeding the perception simulation of the HUD virtual image from different eye positions within the eyebox.

 Performance: Include electronic processing in the visual simulation process. 

 Ease of use: Easily pre-distort images directly from ANSYS SPEOS Hud Optical Analysis

 Productivity: Take advantage of the numerical certification and assess  simulations based on pre-distort images like in a real car. 

 Collaboration: Seamlessly work from CAE to VR: you can use this feature from ANSYS SPEOS HUD Optical Analysis to feed the applications ANSYS SPEOS HUD Visual eXperience and ANSYS SPEOS Visual Ergonomics directly. 


The Society of Automotive Engineers (SAE) is about to publish a new standard optical metrology SAE J1757-2  for Automotive HUD: it will provide methods to qualify HUD's virtual image.

As a member of the SAE committee, ANSYS OPTIS is providing today, in advance, a virtual metrology process by the upcoming publication.


Indeed, the ANSYS OPTIS Library now includes a dedicated test for SAE J1757-2:  simply download it  to assess your HUD virtual image based on SAE optical metrics. 

ANSYS SPEOS Hud Optical Analysis enables OEMs to implement their own specific HUD requirements: thus they share them easily with their ecosystem while protecting the intellectual property. And they generate reporting automatically in accordance with SAE standard. 

 Collaboration: Standardize the communication between automaker, projector, and windshield suppliers.

 Ease of use: Just load pre-defined SAE J1757-2 test from OPTIS online library to use it within SPEOS. 

Discover the OPTIS library

 Expert tool: Assess advanced HUD metrics such as virtual image distance, the horizontal and vertical field of view, luminance non-uniformity, contrast and contrast ratio, image rotation, horizontal and vertical distortion, and ghost image. 


ANSYS OPTIS software is used by Texas Instrument since the creation of the Digital Light Processing (DLP) division in 1993. The objective was to create all digital optical devices that would enable light to be manipulated with accuracy and speed. Thus, Digital Micromirror Device (DMD) is born, bringing innovation into light-steering applications, ranging from digital cinema and home entertainment projectors to optical networking and DNA synthesis.

ANSYS SPEOS has always been a virtual prototyping solution of choice to develop new optical devices, from the cost-effective LCD technologies to the most advanced DMD equipment.

Recently, new applications integrating DMD technologies are emerging in automotive, for the « intelligent » pixel headlights and HUD systems.

ANSYS SPEOS 2018 release has been designed to ease the cross-fertilization between industries: it packages the knowledge developed in pioneering sectors with effective user experience, including the relevant functionalities and parameters you need.

 Expert tool: Expertise inside: take advantage of the know-how that has been developed by pioneering industries.

 Productivity: ANSYS SPEOS 2018 enables you to adopt best practices developed by the field to save you time and effort. The reliability you gain will also strengthen your decision-making.

 Performance: ANSYS SPEOS 2018 is the optical software with most in-depth CAD integration. This is the solution of choice to invent the most innovative optomechanical technologies.

Ease of use: The user experience is refined: in each workbench, you access only the functions and parameters that are contextually relevant. Save time and cost by accessing a library of DLP that are dedicated to HUD in automotive.


The ghostbuster

Windshield-type vehicle head-up displays are increasingly popular and are progressing augmented reality; however, the windshield causes an annoying problem: ghost images.

This problem is solved by a wedge-shaped interlayer film in the windshield that controls the appearance of double imaging.

The need is to determine the optimal wedge angle that makes ghost disappear.

In the early phases of the process, the challenge is to define the angle before the design of the projector while answering to the technical feasibility.

Then, after the design of the projector, the need is to refine the wedge angle to reach the Perceived Quality target and finally define the HUD windshield testing device.

In this 2018 version, the interoperability between analysis -ANSYS SPEOS Hud Optical Analysis- and automation -ANSYS SPEOS Optimizer- has been reinforced. The calculation of the values of the different parameters is automatic, notably the wedge angle, to reach the requirements.

 Collaboration: As each car maker has its own specific definition of the ghost, ANSYS SPEOS 2018 gives the ability to the suppliers to work on these specific definitions to minimize it. 

 Performance: Optimize the Perceived Quality for all drivers sizes and for the whole displayed content. 

 Human Aspect: Weight differently the near and far layers of the dual images considering that the static and dynamic contents are perceived differently by the human eye.

In the past, it was necessary to make the sample and then adjust the corrections each time.
Thanks to ANSYS SPEOS, we can clearly define the tolerances of each component in advance.

Mping Lai | Optical Design Manager - Smart Vehicle Application | LITE-ON

Assembly tolerancing


Optical tolerances are complicated to define: they are generally stated in a dimension, like a mechanical error, but the allowable error is determined by the effect upon an entire set of wavefronts passing through lenses and reflecting by mirrors.

Thus defining the assembly tolerances from HUD optical metrics acceptance criteria is a real challenge.

To review it, you have to synthesize the reporting of optical performances from a large amount of variations.

The need is to include assembly tolerance analysis in the design loop process and enable the root cause analysis of failed configurations.

Assembly tolerancing

 Productivity: Cost & Time reduction: drastically reduce data preparation and result analysis for assembly tolerancing.

 Performance: Numerical certification: Include assembly tolerances in hud design iterations.

 Collaboration: Facilitate the communication between optic, electronic, mechanical and GD&T teams.


The significant growth of HUD implementation and the upcoming arrival of augmented reality reveal new challenges, regarding development productivity and collaboration between engineers from automakers and the supply chain.

In the concept phase, the constraints on the OEM’s side are to identify any packaging issues early, to reach the specifications. On the supplier’s side, in the Invitation For Bidding phase, the challenge is to win the deal while limiting the time and expert resources involved.

Revolutionize HUD integration

ANSYS SPEOS HUD Optical Design 2018 brings a cutting-edge application, ‘Interactive Layout,’ to enable you design from scratch and on-the-fly, without any optical expertise.

Thanks to real-time calculation, immediately understand the impact of the design parameters on the reserved volume, also taking the mechanical constraints into account. Intuitively detect wrong optical paths, thanks to a colored preview. 

 Ease of use: Take advantage of an intuitive interface, including a 3D gizmo, to design the complete system without any expertise.

 Performance: Pre-visualize in real time the freeform shape and enjoy on-the-fly methods.

 Productivity: For the OEMs, it enables drastic improvement with the current development process by anticipating issues at a very early development stage. For the suppliers in ‘request for quotation’ phase, a limited effort in time and expertise is sufficient to win the deal.


ANSYS SPEOS intuitive 3D interface immediately shows the optical analysis of data in the 3D
environment; this significantly improves the effectiveness of communication and coordination
between the customers and the optical department in the company.

Mping Lai | Optical Design Manager - Smart Vehicle Application | LITE-ON

“From 2020, an explosion of AR-HUDs will launch the function into most major luxury brands” according to IHS Automotive.

One of the primary challenges for the manufacturers is to create optical systems based on several freeform mirrors, which improve the quality of the HUD to be able to project Augmented Reality information adequately. 

That is the purpose of the new 2018 'multi-freeform' feature in ANSYS SPEOS HUD Optical Design. Now, design multi-freeform mirror systems, taking advantage of the improvements of the optimizer.

 Performance: Provide best in class HUD: high quality of the image for a reduced volume occupied. 

 Productivity: Save time: design an AR-HUD in a few hours. 

 Expert tool: Enjoy multi-freeform HUD design for CAD engineer. 

 Ease of use: Benefit from an optimized and automated configuration of the multi-freeform system, using the Interactive feature layout of ANSYS SPEOS HUD Optical Design.


For car manufacturers, HUDs today are a masterpiece to convey their brand image. More than satisfying ergonomic requirements, they have to reach their Perceived Quality targets.

New in 2018, ANSYS OPTIS offers a reliable lifelike visual experience of a HUD system still in its virtual state. As soon as the design of the dashboard, pillars, and instrument panel are available, you can create a complete simulation of the driver’s perception to see how the virtual image will be perceived and this, very early in the process and without a physical prototype.

You assess how the veiling glare, coming from the reflection of the sun on the dashboard and then on the windshield, can lower the Perceived Quality. You evaluate how the background luminance will affect the legibility of information. Moreover, you can do all of this using different configurations in terms of exterior lighting conditions, materials, and driver size.

Eye to eye with the drivers, you ensure very early in the development process that your HUD will reach the PQ targets.

 Performance: Thanks to a unique real-time optical simulation, you can experience the HUD in lifelike conditions. 

 Productivity: Iteration loop between design and experience takes minutes not days. 

 VR Connection: Assess a high image quality thanks to stereo display and head tracking. 

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