Glass Agencies produces the Edridge Green Colour Perception Lantern for transport departments, medical institutions, optical labs, and training centers. The lantern supports structured colour perception testing. You use it to assess how a candidate identifies specific colours under controlled light.
View Edridge Green Colour Perception Lantern
Edridge Green Lantern tests help departments maintain colour vision screening standards. Your organisation depends on consistent and stable performance. Our unit supports that need through controlled output, stable filters, and a firm body that holds the optical parts in fixed alignment.
What The Edridge Green Colour Perception Lantern Does
The lantern presents fixed colour signals. The examiner selects a colour. The candidate states the seen colour. The response is recorded. This simple routine gives clear data on colour perception levels.
Transport services depend on this test. A colour mistake in signals creates risk. The lantern helps screen staff for roles in rail, aviation, marine, traffic, and industrial plants. Education centres use the lantern for training and research.
Who Uses This Lantern
- Railway recruitment boards
- Metro rail departments
- Civil aviation screening units
- Marine transport offices
- Driver licensing authorities
- Ophthalmology departments
- Medical colleges
- Optometry training labs
- Research groups studying visual response
Your organisation fits into one or more of these groups if you work with colour signals, visual tasks, or structured light testing.
Primary Function
The lantern shows red, green, and white signals. Each colour is produced through fixed filters. Aperture plates shape the beam. The output stays steady. A controlled viewing distance helps produce consistent testing conditions.
Your examiner follows a standard sequence. The candidate identifies each signal. Your team marks the result. The lantern supports daily testing through simple handling.
How The Lantern Works
The unit contains a metal housing. A lamp sits inside. Filters sit in the light path. The aperture plate sits in front. The operator selects an aperture and a filter. The lamp passes light through these parts. The output presents a colour signal in a narrow beam.
The lantern blocks stray light. The front opening gives a clean point of focus. Candidates see the displayed signal without side glare.
Why Filter Quality Matters
Colour perception testing depends on filter transmission. A filter with uneven tint shifts the final shade. This leads to false responses from candidates. Glass Agencies uses filters with stable colour output. The lantern holds filter frames tightly to prevent movement.
You gain stable colour intensity during long sessions.
Construction by Glass Agencies
Glass Agencies builds the Edridge Green Colour Perception Lantern with a solid metal body. The internal structure prevents vibration. The lens holder and filter holders stay fixed at the correct distance from the lamp. This helps maintain uniform beam conditions.
We focus on four areas.
- Housing stability
- Filter clarity
- Aperture accuracy
- Clean internal light path
Your team receives a unit suitable for routine testing without complex handling.
Features of This Lantern
- Metal body
- Optical grade filters for red, green, and white
- Smooth selector for apertures
- Stable lamp output
- Front shield to block external light
- Ventilation openings for heat control
- Easy switch control
- Balanced weight for steady placement on tables
These features help examiners run the test with minimal preparation time.
Technical Specifications
- Body material, metal
- Colour filters, red, green, white
- Apertures, standard test series
- Light source, controlled intensity lamp
- Power input, standard AC supply
- Mounting, tabletop placement
- Operating distance, specified by testing authority
- Cooling, controlled air vents
- Weight, moderate for stability
Your organisation should match these specifications with tender documents or selection criteria.
Why Departments Choose Our Lantern
- Simple operation
- Consistent colour output
- Stable mounting
- Low care requirement
- Clear beam alignment
- Long usage cycles
These factors make our model suitable for high volume screening.
How To Operate The Lantern
- Place the lantern on a firm table.
- Connect the power source.
- Switch on the light.
- Select the aperture.
- Select the filter.
- Position the candidate at the required distance.
- Present the colour.
- Record the response.
- Repeat the steps in the required order.
The testing workflow stays simple for new staff.
Standard Test Sequences
- Red
- Green
- White
- Mixed order
- Random colour selection
- Different aperture sizes
These sequences follow typical recruitment or medical protocols.
Use Cases
- Railway and metro signal staff
- Aviation ground and flight staff
- Marine navigators
- Traffic signal operators
- Industrial plant operators
- Clinical vision evaluation
- Student training in ophthalmology and optometry
- Lab research in colour response studies
Your department can run daily or periodic tests for staff selection.
Why The Lantern Matters For Transport Services
Transport signals use fixed colours. A candidate must identify these colours under different light conditions. The lantern provides a structured way to test this requirement. A limited colour mistake during the test signals a risk for real world tasks.
Why Construction Quality Influences Results
Loose filter holders shift output quality. Misaligned apertures distort the beam. Internal reflections affect the final shade. Glass Agencies avoids these faults by fixing each part in a rigid frame.
- You get consistent output even during long sessions.
- Your department reduces retesting cycles.
- Your staff gains confidence in the test results.
Maintenance Guidelines
- Wipe the outer surface with a dry cloth.
- Keep the lantern in a dry storage area.
- Avoid touching filters with fingers.
- Replace the lamp when output weakens.
- Check power cords during routine inspection.
- Prevent moisture entry.
- Keep dust away from the front opening.
These steps protect the colour output and extend operational life.
Safety Instructions
- Do not place the lantern near heat sources.
- Do not allow objects to block the air vents.
- Disconnect power before lamp replacement.
- Allow the lamp to cool before handling.
- Use a stable surface to prevent tilt.
Environmental Suitability
- Training centres
- Testing rooms
- Transport screening halls
- Medical departments
- Research labs
The lantern gives stable output under indoor conditions with standard room light control.
Why Your Organisation Gains Value From This Lantern
- Consistent test output supports fair selection.
- Simple workflow reduces training time.
- Stable filters support long schedules.
- Strong housing supports repeated transport inside the facility.
- Compliance with standard colour test procedures improves documentation.
Colour Vision Research Support
Some research groups use the lantern to study colour response patterns. Fixed output signals help create repeatable data sets. Controlled apertures help measure response to small beams. Your lab benefits from predictable light levels.
Packaging and Dispatch
Glass Agencies supplies the lantern in protective packing. Each box includes:
- Lantern unit
- Power cable
- Instruction sheet
- Quality check note
Units for export receive reinforced packaging.
Custom Options
Your organisation can request changes in aperture size or filter specifications for research needs. Glass Agencies prepares custom units on order.
Why Institutions Source This From Glass Agencies
- Clear signal output
- Simple handling
- Strong structure
- Proven use in high volume environments
- Support for teaching and research teams
Final Notes
The Edridge Green Colour Perception Lantern from Glass Agencies supports structured colour perception testing for transport, medical, and research sectors. The design focuses on stable output, clear filters, and a firm structure that supports consistent colour signals.
Your organization receives a practical unit for routine testing, recruitment screening, and academic training. The lantern supports controlled testing conditions and predictable results for visual assessment tasks.