G2812 512-565 nm nominal pass-region bandpass filter
G2812 is a bandpass filter. The main high-transmission region is approximately 513-559 nm.
- Measured wavelength range: 380-780 nm
- Main-band width: ≈ 54.5 nm at half-peak transmission
- Lower 50% edge: ≈ 510.1 nm
- Upper 50% edge: ≈ 564.1 nm
- Peak transmission: ≈ 94.9% at 543 nm
- Custom options: Wavelength response, dimensions and operating conditions
Values shown are sample measurements. Final specifications are agreed for your order.
G2812 512-565 nm nominal pass-region bandpass filter
G2812 is a bandpass filter. The main high-transmission region is approximately 513-559 nm.
- Measured wavelength range: 380-780 nm
- Main-band width: ≈ 54.5 nm at half-peak transmission
- Lower 50% edge: ≈ 510.1 nm
- Upper 50% edge: ≈ 564.1 nm
- Peak transmission: ≈ 94.9% at 543 nm
- Custom options: Wavelength response, dimensions and operating conditions
Values shown are sample measurements. Final specifications are agreed for your order.
512-565 nm nominal pass-region bandpass filter (G2812)
G2812 is a bandpass filter. The main high-transmission region is approximately 513-559 nm. Use the full curve to match the desired signal and check secondary transmission before choosing the filter.
Optical performance
- Measured wavelength range: 380-780 nm. Performance outside this measured interval is not established by this curve.
- Main band at half-peak transmission: Approximately 509.9-564.4 nm, giving a full width at half maximum (FWHM) of approximately 54.5 nm. This describes the main band only; other transmitted regions may remain.
- Selected regions at or above 80% transmission: 513-559 nm. Approximate measured intervals.
- Selected regions at or below 5% transmission: 386-501 nm; 581-780 nm. Measured sample intervals; confirm the required blocking for your order.
- Peak transmission: Approximately 94.9% at 543 nm. Peak wavelength is not the same as a defined centre wavelength.
- Measured edge at 50% transmission: Approximately 510.1 nm. Interpolated absolute-transmission crossing, checked against the factory summary.
- Measured edge at 50% transmission: Approximately 564.1 nm. Interpolated absolute-transmission crossing, checked against the factory summary.
- Customization: We can customize stock and sample-book designs. Tell us the wavelength response, size and operating conditions you need.
These values come from the measured samples and help you choose a starting design. We will agree the final specification for your order. Custom versions have their own specifications and measured curves.
Applications to consider
- 532 nm illuminated inspection: Consider a source around 532 nm. Match the full source bandwidth to the curve, and check ambient-light rejection over the detector response.
- Optical sensing channels: Evaluate the transmitted region for a source-and-detector pair. Secondary transmitted light may require additional blocking or a detector with a limited response.
- Fluorescence instrument development: Consider the profile for an excitation or collection channel after matching both spectra. Confirm rejection of the excitation line and other transmitted bands in the complete optical layout.
Choosing this filter
- Check the full wavelength range of your light source, the wavelengths your detector responds to, and how much unwanted light you need to block. Use the full curve when choosing a filter; the product code and peak do not tell the whole story.
- Tell us the angle at which light reaches the filter and whether the beam is parallel or converging. For demanding rejection or high-power use, confirm the required blocking and power-handling specifications.
Custom options
Start with this stock or sample-book design, then tell us what you need to change. We can discuss the wavelength bands, transmission, blocking, angle, glass material, size and operating conditions with you, and agree a specification for your custom filter.
Transmission spectrum
Questions about G2812
What high-transmission regions should I compare for G2812?
The measured regions at or above 80% transmission are 513-559 nm. They are measured intervals, not guaranteed passband tolerances. Compare the full curve with the signal wavelengths you need to retain.
Can I use the low points on the G2812 curve as a blocking guarantee?
The measured regions at or below 5% transmission are 386-501 nm; 581-780 nm. That threshold is a way to summarize this sample, not a guaranteed blocking specification. For a weak signal beside a bright unwanted wavelength, tell us the actual wavelengths and maximum leakage you can accept.
Discuss this filter with KUPO - include the product reference, source wavelength, working angle and required dimensions.