IR Longpass Filter (LP)

Product Introduction:

MULTI IR Long-Pass Filter features wide cutoff bandwidth, deep cutoff depth, high transition steepness, and high transmittance. It is widely used in high-precision optical applications such as temperature detection, human body sensing, and industrial temperature measurement. Customization of size, cutoff wavelength, and spectral parameters is available to meet the design requirements of various optical systems.

Spectrogram:

LP5500 SPECIFIC PARAMETERS
Size	Φ0.1-300mm，customisable
Substrate Material	Silicon
Half-height Cut-off Wavelength	5500nm
Transmission Band (≥5700nm)	Tavg ≥ 88%
Cut-off Band (≤5300nm)	Tavg ≤ 0.1%
Transmission Wavelength Range (TWR)	≥70%
Out-of-band Cut-off Range	400～5000nm
Average Transmittance (Tavg)	≤ 0.5%
THE ABOVE PARAMETERS CAN BE CUSTOMIZED

product list

Introduction

related products

Name	5% CUT ON	50% CUT ON	HT (nm)	Tmin	Tavg	Size (mm)	Sub	Tmax	Tavg	Spectrogram
LP1200	/	1200	1300~4800	/	≥80	Φ0.1~300	Sapphire		<1
LP1500		1500	1600~5300		≥85	Φ0.1~300	Sapphire		<1
LP1600	/	1600	1650~1700	/	≥90	Φ0.1~300	Quartz		<1
LP1600	/	1600	1650~1660	/	≥90	Φ0.1~300	White Glass		<1
LP2000	1930	2000	2100~2800	/	≥85	Φ0.1~300	Sapphire		<1
LP2400	/		2400~11100 11100~13300	≥80	/	Φ0.1~300	Ge		<5
LP2750	2700	2750	2800~3670	/	≥90	Φ0.1~300	Quartz		<1
LP2800		2800	2950~5100	/	≥90	Φ0.1~300	ZnSe		<1
LP2900		2900	3050~5100	/	≥90	Φ0.1~300	ZnSe		<1
LP3200	3320	3400	3480~5350	/	≥90	Φ0.1~300	Ge		<1
LP3300	3200	3300	3400~5000	/	≥90	Φ0.1~300	Sapphire		<1
LP3450	/	3450	3700~5000	/	≥93	Φ0.1~300	Ge		<1
LP3500	3600	3670	3800~5600	/	≥90	Φ0.1~300	Ge	<1
LP3550	/	3550	3800~5500	/	≥90	Φ0.1~300	Ge		<1
LP3600	/	3600	3960~4800	/	≥90	Φ0.1~300	Ge		<1
LP3650	3540	3620	3700~5200	/	≥85	Φ0.1~300	Sapphire		<1
LP3700	/	3700	4000~5500	/	≥90	Φ0.1~300	Ge		<1
LP3730	0.1	3730	4400~4900	/	≥90	Φ0.1~300	Ge		<1
LP3750		3750	3800~4900	/	≥90	Φ0.1~300	Ge		<1
LP3760	/	3760	3960~4800	/	≥90	Φ0.1~300	Ge		<1
LP3800	/	3800	4200~5500	/	≥90	Φ0.1~300	Ge		<1
LP3850	/	3850	4000~5000	/	≥90	Φ0.1~300	Ge		<1
LP4000	3850	4000	4100~5100	/	≥90	Φ0.1~300	Ge		<1
LP4250			4350~5000	/	≥85	Φ0.1~300	Ge		<1
LP4730		4730	4900~5150	/	≥80	Φ0.1~300	Sapphire		<1
LP5500	5500	/	7500~13500	/	≥72	Φ0.1~300	Sapphire		<1
LP6100	/	6100	6300~12600	/	≥90	Φ0.1~300	Ge		<1
LP6200	/	6200	6400~12600	/	≥90	Φ0.1~300	Ge		<1
LP6300	/	6300	6550~14500	/	≥90	Φ0.1~300	Ge		<1
LP6400	/	6400	6500~12600	/	≥90	Φ0.1~300	Ge		<1
LP6900	6900	7030	7200~12610	/	≥85	Φ0.1~300	Ge		<1
LP6500	/	6500	6800~11000	/	≥85	Φ0.1~300	Ge		<1
LP6750	/	/	7000~14000	/	≥80	Φ0.1~300	ZnSe		<1
LP7150-A	7150	/	8000~11000	/	≥90	Φ0.1~300	Ge	20	<5
LP7150-B	7150	/	8000~12000	/	≥80	Φ0.1~300	Ge lens	15	<3
LP7200	/	/	10000~12600	/	≥90	Φ0.1~300	Ge	10	<1
LP7300	7420	/	8000~11000	/	≥90	Φ0.1~300	Ge		<1
LP7400	/	7400	8000~14000	/	≥80	Φ0.1~300	Ge lens		<1
LP7500	/	/	8400~12500	/	≥90	Φ0.1~300	Ge		<1
LP7675		7675	8000~14000	/	≥90	Φ0.1~300	Ge		<1
LP7700	/	7700	8000~11000	/	≥90	Φ0.1~300	Ge		<1
LP7730	7730	/	8000~14000	/	≥80	Φ0.1~300	Ge wafer		<1
LP7750		7750	8100~11000	/	≥90	Φ0.1~300	Ge		<1
LP7800	/	7800	8100~11000	/	≥90	Φ0.1~300	Ge		<1
LP7850	/	7850	8000~11000	/	≥85	Φ0.1~300	Ge		<1
LP7900	/	7900	8200~11000	/	≥90	Φ0.1~300	Ge		<1
LP7925	/	7925	8100~12600	/	≥90	Φ0.1~300	Ge		<1
LP7950	/	7950	8050~14000	/	≥85	Φ0.1~300	Ge		<1
LP8000	/	8000	8150~12000	/	≥85	Φ0.1~300	Ge		<1
LP8100	/	8100	8150~12000	/	≥85	Φ0.1~300	Ge		<1
LP8200	8200	/	9000~14000	/	≥80	Φ0.1~300	Ge wafer		<1
LP8400	8400	/	8800~15000	/	≥90	Φ0.1~300	ZnSe		<1
LP9000		9000	9500~12500	/	≥90	Φ0.1~300	Ge		<1
LP9700	9700		10100~15000	/	≥90	Φ0.1~300	ZnSe		<1
LP9800	/	9800	10000~16300	/	≥90	Φ0.1~300	ZnSe		<1
LP9900	/	9900	10000~16300	/	≥85	Φ0.1~300	ZnSe		<1
LP10000	/	10000	10150~14300	/	≥90	Φ0.1~300	ZnSe		<1
LP10015	/	10015	10450~14500	/	≥85	Φ0.1~300	Ge		<1
LP10080	/	10080	10180~13500	/	≥85	Φ0.1~300	Ge	3	<1
LP10100	/	10100	10150~14300	/	≥90	Φ0.1~300	ZnSe		<1
LP10200	/	10200	10500~14000	/	≥85	Φ0.1~300	Ge	3	<1
LP10300	/	10100	10500~13000	/	≥85	Φ0.1~300	Ge	3	<1
LP10400	/	10325	10500~15000	/	≥90	Φ0.1~300	ZnSe		<1
LP10500	/	10500	10700~15000	/	≥85	Φ0.1~300	ZnSe		<1
LP10600	/	10600	11000~14000	/	≥80	Φ0.1~300	Ge	5	<1
LP10840	/	10840	10940~13500	/	≥85	Φ0.1~300	Ge		<1
LP10900	/	10900	11200~15400	/	≥80	Φ0.1~300	Ge		<1
LP11050	/	11050	11200~15400	/	≥80	Φ0.1~300	Ge		<1
LP11190	/	11190	11500~15700	/	≥80	Φ0.1~300	Ge		<1
LP11400	/	11400	11600~12250	/	≥90	Φ0.1~300	Ge		<1
LP11600	/	11600	11800~12200	/	≥85	Φ0.1~300	Ge		<1
LP11700	/	11700	11900~12300	/	≥80	Φ0.1~300	Ge		<1
LP11900	/	11900	12100~12500	/	≥75	Φ0.1~300	Ge		<1

123

The above list shows our current stock items.

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MULTI IR IR Longpass Filter is one of the core optical filter products, specifically designed for precise infrared spectrum selection. Its core function is to allow efficient transmission of specific long-wavelength infrared light while achieving high-efficiency cutoff of short-wavelength infrared light (including visible light, ultraviolet light, etc.).

As an important category of industrial-grade optical filters, it is manufactured using high-quality dielectric materials and advanced coating technology, featuring core advantages such as high transmittance, high signal-to-noise ratio, and high cutoff rate. It can be customized for wavelength ranges from 800nm to over 10000nm according to actual application scenarios. This product is widely used in infrared imaging, thermal imaging cameras, infrared photography, medical detection, gas analysis and other fields. For example, in thermal imaging equipment, it can effectively filter short-wave interference in the environment and improve the intensity and imaging clarity of infrared signals; in medical detection scenarios, it can accurately meet the temperature detection needs of body temperature and blood, ensuring the accuracy of diagnostic data. MULTI IR IR Longpass Filter supports customization services, allowing adjustments to optical film layers, size, coating process and other parameters according to customer needs. It is compatible with various equipment such as telescopes, DSLR cameras, and industrial sensors. Whether for standardized mass production or personalized customization, it can meet the stringent requirements of different fields such as industry, scientific research, and consumer electronics, and is a key optical component for enhancing the performance of infrared systems.

Substrates: Silicon, germanium, zinc sulfide, zinc selenide, chalcogenide glass, gemstone, infrared quartz, CaF₂, MgF₂ and other materials;

Size: Circular wafers Ф0.1-300mm, square wafers 1×1-400×300mm, lenses, aspherical lenses, etc. Materials and sizes can be customized according to customer requirements;

Optical indicators: For example, Silicon LP5500, transmittance ≥ 70%.