Spy Mirrors – "One-Way Mirror" coatings on glass
TDS Series
Special Properties
- Appears like a mirror from an observed brighter space
- Transparent for the observer in the darker area
- Chromium coated glass-based mirror
(no plastics or foils) - RoHS compliant
- Good image quality
- Approximately 3-4% of transmittance
- High moisture resistance (outdoor use)
- Condensation-resistant
Typical Applications
- "One-way mirror"
- Hidden camera animal observation
- Hiding security video camera systems
- Hidden observation windows
- Mirrors for environments with high humidity
Request for Quotation
Available within 48 hours
A so-called spy mirror makes it possible to observe an illuminated room from a dark room. At the same time, it is impossible to see the observer when looking from the bright room into the dark room. Only a mirror reflection appears in the brightly lit area, so that the observer located on the dark side of the mirror is not detected. Due to this effect, a spy mirror is also called a one-way mirror. This one-way mirror effect is based exclusively on a substantial difference in brightness between the mirror's two sides. A mirror that only transmits from one side is not feasible for physical reasons. Hence, it is essential for the desired function of a spy mirror that the lighting conditions between the place to be observed and the area from which it is observed differ significantly. The observed space should be illuminated as brightly as possible for the best results, while the monitored room remains as dark as possible.
You can also use our TDS mirror to hide surveillance camera systems. The camera is placed into a box or dark place behind the TDS mirror in such an application. The camera can't be seen from the outside, but it can still film through the TDS mirror. However, the camera must provide enough sensitivity to produce an image bright enough for this application.
Our TDS "one-way mirror" is based on a chrome coating applied to a high-quality substrate glasses and offers higher image quality and, therefore, a more professional solution than plastic films or acrylic designs. For best results, the coated side of the mirror should point towards the bright room. The TDS is corrosion-resistant, resistant to water, acids, and other environments, and it is RoHS compliant.
With sufficient quantity, thermal hardening, as often necessary for safety-relevant areas, is possible. Other optical transmissions and other thicknesses are also available for larger purchase quantities. Please send us your requirements in case you have any questions.
To request a quote for our TDS spy mirror with individual dimensions, please click the button below:
Request for Quotation
Available within 48 hours
Specifications
Optical properties
- Average visible transmittance: approx. 3-4%
- Reflectance: approx. 60%
Standard Thickness
Please click on a thickness to request a quote.Thickness (mm) |
Tolerance |
|
|---|---|---|
| 3.0 | ±0.25 | ✔ |
| Thicknesses marked with "✔" are also available within 48 hours. | ||
| Thicknesses up to 10 mm are possible in large quantities on request. | ||
Substrate
Coating
- Single side chrome layer (RoHS compliant)
All data and specifications given are average guide values and are not guaranteed. Moreover, please consider the “Notes on Specifications”.
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Last update: November 19, 2025