Within Reflections

Why Dashboard Lights Can Look Alive

Dashboard lights and phone screens can appear to slide, hover or pace a car because the observer and glass are moving together.

On this page

  • How sloped and curved windscreens shift reflections
  • Common sources inside cars and nearby traffic
  • Roadside checks that separate reflection from object
Preview for Why Dashboard Lights Can Look Alive

Introduction

One of the more convincing ways a UFO report can originate from a reflection is inside a moving car. A bright dashboard display, mobile phone screen, instrument cluster, navigation screen or even a nearby vehicle’s lights can be reflected by the windscreen and appear to hover outside the vehicle. Because the observer, the glass and the reflected source are all moving together, the reflected image can seem to pace the car, slide across the sky, change altitude or maintain a fixed position relative to the horizon. What looks like an intelligently moving aerial object may actually be a stationary reflection locked to the viewing geometry of the windscreen. Research on automotive optics and windscreen glare shows that vehicle glass routinely produces reflected and ghost images, especially when lighting contrasts are strong and the windscreen is steeply raked. [DIVA Portal]diva-portal.orgDIVA PortalDaytime veiling glare in automobiles caused by dashboard…April 28, 2008 — by A Dunsäter · 2008 · Cited by 3 — Veiling glare…Published: April 28, 2008 [ReaVis]en.rea-vis.comReaVisGhost Image and Its Solutions (Part I)Light rays from the HUD are reflected off the windshield and into the driver's eyes, allowing…

Windscreens illustration 1

Why Dashboard Lights Can Look Alive

Unlike a house window, a car windscreen is rarely vertical or flat. It is typically sloped, curved and laminated, creating conditions where reflected images appear displaced from their true source. Automotive head-up displays deliberately exploit this effect by projecting information onto the windscreen so that it appears to float ahead of the vehicle. Engineers designing these systems must account for multiple reflections and ghost images because the windscreen naturally creates virtual images that seem suspended beyond the glass. [ResearchGate]researchgate.netResearch Gate Maximal Acceptable Ghost Images for Designing a LegibleResearchGateMaximal Acceptable Ghost Images for Designing a Legible…October 2, 2017 — 2 Oct 2017 — This is accomplished using a system…Published: October 2, 2017 [rea vis]en.rea-vis.comReaVisGhost Image and Its Solutions (Part I)Light rays from the HUD are reflected off the windshield and into the driver's eyes, allowing… In everyday driving, the same optical behaviour can make ordinary interior lights appear external. The brain interprets the road scene as being beyond the windscreen and often assigns the reflected image to that same distant space. A reflected light therefore appears not as something on the glass but as an object somewhere ahead.

The effect becomes particularly persuasive when:

  • The outside environment is dark or featureless.
  • The reflected source is bright and sharply defined.
  • The observer is concentrating on distant scenery.
  • The windscreen angle places the reflection near the apparent horizon.
  • The observer is moving, creating strong motion cues. DIVA Portal+2Wikipedia [diva-portal.org]diva-portal.orgDIVA PortalDaytime veiling glare in automobiles caused by dashboard…April 28, 2008 — by A Dunsäter · 2008 · Cited by 3 — Veiling glare…Published: April 28, 2008

Because the reflection is tied to the vehicle rather than the landscape, it can appear to maintain a suspiciously constant position. To a witness, this may resemble an unknown craft pacing the car.

How Sloped and Curved Windscreens Shift Reflections

The geometry of a windscreen helps explain why reflections seem to move independently.

Motion without independent movement

A reflection remains fixed relative to the glass, but the car itself is constantly changing position and direction. As the vehicle turns, climbs, descends or changes lanes, the apparent position of the reflected image shifts against the background sky. The observer perceives this as movement of the object rather than movement of the viewing platform.

A useful clue is that the reflected light often follows the driver’s viewpoint. If the driver leans left or right, the apparent object may drift as well. Genuine distant objects do not normally mirror such small head movements. [BIMMERPOST]f10.5post.comBIMMERPOSTReflections from dash in windscreenIf you raise your seated driving position…Read more…

Ghost images and double objects

Modern windscreens consist of multiple layers. Light can reflect from both the inner and outer glass surfaces, creating offset duplicate images known as ghost images. Automotive optics research and HUD engineering literature describe this as a routine consequence of laminated windscreen construction. [ReaVis]en.rea-vis.comReaVisGhost Image and Its Solutions (Part I)Light rays from the HUD are reflected off the windshield and into the driver's eyes, allowing… [Google Patents]patents.google.comGoogle PatentsWO2021079154A1 - Ghost image free head-up displayAn image generation system for providing a ghost image free head-up displa…

In UFO-style sightings, these duplicates can be misinterpreted as:

  • Two objects flying in formation.
  • An object accompanied by a smaller satellite light.
  • A craft with structured lighting.
  • A light that appears to split and rejoin.

The effect is strongest when bright interior sources strike the glass at oblique angles. [ReaVis]en.rea-vis.comReaVisGhost Image and Its Solutions (Part I)Light rays from the HUD are reflected off the windshield and into the driver's eyes, allowing…

Windscreens illustration 2

Common Sources Inside Cars and Nearby Traffic

Many reported “moving lights” seen through windscreens originate from surprisingly ordinary sources.

Dashboard displays. Digital instrument clusters, warning lamps and infotainment screens can generate bright reflections, particularly at night. Automotive glare studies identify dashboard reflections as a major contributor to visible ghost images in windscreens. [DIVA Portal]diva-portal.orgDIVA PortalDaytime veiling glare in automobiles caused by dashboard…April 28, 2008 — by A Dunsäter · 2008 · Cited by 3 — Veiling glare…Published: April 28, 2008

Mobile phones and tablets. A navigation app, incoming notification or illuminated screen can reflect as a floating light. Because the device moves with the vehicle, the reflection can seem to track perfectly with the observer.

Head-up displays. These systems intentionally project virtual images that appear beyond the bonnet. Their existence demonstrates how easily windscreens can create convincing floating lights. [ResearchGate]researchgate.netResearch Gate Maximal Acceptable Ghost Images for Designing a LegibleResearchGateMaximal Acceptable Ghost Images for Designing a Legible…October 2, 2017 — 2 Oct 2017 — This is accomplished using a system…Published: October 2, 2017

Traffic behind or beside the vehicle. Headlights, emergency lights and illuminated signs can bounce off the windscreen and appear ahead of the driver rather than behind. Curved glass can further distort their apparent location. [DIVA Portal]diva-portal.orgDIVA PortalDaytime veiling glare in automobiles caused by dashboard…April 28, 2008 — by A Dunsäter · 2008 · Cited by 3 — Veiling glare…Published: April 28, 2008

Bright dashboard trim. Even non-luminous surfaces can create reflected shapes. Studies of automotive veiling glare note that light-coloured dashboards and high-contrast interior surfaces can produce mirror-like images in the windscreen. [DIVA Portal]diva-portal.orgDIVA PortalDaytime veiling glare in automobiles caused by dashboard…April 28, 2008 — by A Dunsäter · 2008 · Cited by 3 — Veiling glare…Published: April 28, 2008

Why the Illusion Feels So Convincing

Many UFO witnesses specifically report an object that seems to accompany their vehicle for long distances. Windscreen reflections naturally create this impression.

A truly distant aircraft, planet or tower light usually changes position slowly as the vehicle moves. A reflection, however, remains tied to the vehicle’s geometry. The apparent object therefore keeps pace effortlessly, creating the impression of deliberate tracking behaviour.

The illusion becomes stronger when the background lacks depth cues. A reflection seen against a dark sky, distant hills or a uniform cloud deck has little visual competition. Without nearby reference points, the brain often assigns the reflection a great distance and interprets its motion accordingly. This combination of distance misjudgement and vehicle movement can transform a fixed reflection into what appears to be an intelligently controlled aerial object. [DIVA Portal]diva-portal.orgDIVA PortalDaytime veiling glare in automobiles caused by dashboard…April 28, 2008 — by A Dunsäter · 2008 · Cited by 3 — Veiling glare…Published: April 28, 2008

Roadside Checks That Separate Reflection from Object

Many reflection-based sightings can be tested quickly.

Change viewing position. Move your head slightly left, right, up or down. Reflections often shift noticeably relative to the outside scene, whereas distant objects remain nearly fixed. [BIMMERPOST]f10.5post.comBIMMERPOSTReflections from dash in windscreenIf you raise your seated driving position…Read more…

Cover or dim suspected sources. Lower dashboard brightness, switch off a screen or shield a phone. If the object weakens or disappears, the source is probably inside the vehicle.

Observe through an open side window. A reflection tied to the windscreen will usually vanish when viewed without the glass in the optical path.

Watch during a turn. Reflections frequently move in ways that correspond to the vehicle’s orientation rather than to independent motion outside.

Use polarised sunglasses if available. Polarisation can reduce some windscreen reflections, making hidden reflected sources easier to identify. [Reddit]reddit.comDash mat will also help to stop some of those reflections.Read moreRedditDashboard reflection in windshield: r/AutoDetailingOctober 20, 2018 — Polarized sunglasses will definitely cut through reflections…Published: October 20, 2018

These simple checks do not explain every unusual sighting, but they are particularly effective for reports involving bright lights that seem to accompany a moving vehicle.

Windscreens illustration 3

What This Means for UFO Reports

Car windscreen reflections occupy an important middle ground in UFO investigations. The witness is genuinely seeing a light, and the light may appear to move in complex and convincing ways. Yet the apparent motion often arises from the interaction of a moving observer, a reflective windscreen and a nearby light source rather than from anything travelling through the sky.

The significance of this explanation is not that all vehicle-based UFO reports are reflections. Rather, it shows how ordinary automotive optics can create a surprisingly lifelike aerial target—one that seems to hover, follow, accelerate or remain fixed in the distance even though its true origin is inside the vehicle itself. [DIVA Portal]diva-portal.orgDIVA PortalDaytime veiling glare in automobiles caused by dashboard…April 28, 2008 — by A Dunsäter · 2008 · Cited by 3 — Veiling glare…Published: April 28, 2008 [ReaVis]en.rea-vis.comReaVisGhost Image and Its Solutions (Part I)Light rays from the HUD are reflected off the windshield and into the driver's eyes, allowing…

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Endnotes

  1. Source: diva-portal.org
    Link: https://www.diva-portal.org/smash/get/diva2%3A18109/FULLTEXT01.pdf
    Source snippet

    DIVA PortalDaytime veiling glare in automobiles caused by dashboard...April 28, 2008 — by A Dunsäter · 2008 · Cited by 3 — Veiling glare...

    Published: April 28, 2008

  2. Source: researchgate.net
    Title: Research Gate Maximal Acceptable Ghost Images for Designing a Legible
    Link: https://www.researchgate.net/publication/320176392_Maximal_Acceptable_Ghost_Images_for_Designing_a_Legible_Windshield-Type_Vehicle_Head-Up_Display
    Source snippet

    ResearchGateMaximal Acceptable Ghost Images for Designing a Legible...October 2, 2017 — 2 Oct 2017 — This is accomplished using a system...

    Published: October 2, 2017

  3. Source: Wikipedia
    Title: Vehicle blind spot
    Link: https://en.wikipedia.org/wiki/Vehicle_blind_spot

  4. Source: f10.5post.com
    Title: BIMMERPOSTReflections from dash in windscreen
    Link: https://f10.5post.com/forums/showthread.php?t=540745
    Source snippet

    If you raise your seated driving position...Read more...

  5. Source: patents.google.com
    Link: https://patents.google.com/patent/WO2021079154A1/en
    Source snippet

    Google PatentsWO2021079154A1 - Ghost image free head-up displayAn image generation system for providing a ghost image free head-up displa...

  6. Source: reddit.com
    Title: Dash mat will also help to stop some of those reflections.Read more
    Link: https://www.reddit.com/r/AutoDetailing/comments/9purkk/dashboard_reflection_in_windshield/
    Source snippet

    RedditDashboard reflection in windshield: r/AutoDetailingOctober 20, 2018 — Polarized sunglasses will definitely cut through reflections...

    Published: October 20, 2018

  7. Source: reddit.com
    Link: https://www.reddit.com/r/premiere/comments/1bhmvf3/how_to_remove_the_dashboard_reflection_from_the/
    Source snippet

    How to remove the dashboard reflection from...Then use motion values to slide the top image over the reflections, & adjust masks & feath...

  8. Source: en.rea-vis.com
    Link: https://en.rea-vis.com/media/detail188.html
    Source snippet

    ReaVisGhost Image and Its Solutions (Part I)Light rays from the HUD are reflected off the windshield and into the driver's eyes, allowing...

Additional References

  1. Source: f.hubspotusercontent10.net
    Link: https://f.hubspotusercontent10.net/hubfs/2779114/Lumetrics_August2021/PDF/Wedge-Angle-Measurements-for-HUD-displaysfinal.pdf
    Source snippet

    Wedge Angle and Layer Thickness Measurementsby MA Marcus · Cited by 3 — The present article describes the types and layer structures invo...

  2. Source: spie.org
    Link: https://www.spie.org/news/6610-simultaneous-head-up-display-windshield-wedge-angle-and-layer-thickness-measurements
    Source snippet

    Simultaneous head-up display windshield wedge-angle...29 Jul 2016 — We demonstrate that low-coherence interferometry can be used to meas...

  3. Source: forum.mapillary.com
    Title: reducing dashboard reflections with a cpl circular polarizer filter
    Link: https://forum.mapillary.com/t/reducing-dashboard-reflections-with-a-cpl-circular-polarizer-filter/174
    Source snippet

    Mapillary Community ForumReducing dashboard reflections with a CPL (Circular...13 Sept 2015 — A polarizer reduces certain kinds of refle...

  4. Source: facebook.com
    Link: https://www.facebook.com/groups/kiaev3/posts/1456837948693013/
    Source snippet

    over, wearing polarized sunglasses, or tinting the windshield...Read more...

  5. Source: facebook.com
    Link: https://www.facebook.com/groups/341871730272007/posts/416186059507240/
    Source snippet

    eld and the smooth surface of the dashboard, which...Read more...

  6. Source: eclat-digital.com
    Title: materials reflections inside car cabin
    Link: https://eclat-digital.com/materials-reflections-inside-car-cabin/
    Source snippet

    Identify materials reflections inside car cabin16 Sept 2021 — To reduce parasitic reflections on glass surfaces in car cabins, we evaluat...

  7. Source: mynissanleaf.com
    Title: windshield reflection solution.8647
    Link: https://mynissanleaf.com/threads/windshield-reflection-solution.8647/
    Source snippet

    My Nissan Leaf ForumWindshield Reflection? Solution?24 Apr 2012 — I notice this problem at certain times of the day. The light colored p...

  8. Source: youtube.com
    Title: 3D Hologram Display – Futuristic Gadget in Action! 🛸
    Link: http://www.youtube.com/watch?v=DETga_D08UA
    Source snippet

    Why dashboard lights reflect in car windshields Night glare problem Before & After results 🤩 #automobile #glass #viral #shorts Number 1...

  9. Source: instagram.com
    Link: https://www.instagram.com/reel/DUKHrAsEsd6/?hl=bg
    Source snippet

    so its projection appears mirrored on the windshield...

  10. Source: arstechnica.com
    Title: anyway to eliminate dashboard reflection in a windshield.238877
    Link: https://arstechnica.com/civis/threads/anyway-to-eliminate-dashboard-reflection-in-a-windshield.238877/
    Source snippet

    Maybe you should just get some black felt and tape it on there to see how it works.Read more...

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