HM-707 Hot Mirror & UV-IR Cut Filter
Achieve broad visible transparency with a gentle spectral roll-off and targeted mid-infrared blocking.
- Passband (visible): 421–691 nm, 85.5–99.3 % T
- Cut-off (T50): ≈ 707 nm
- Edge steepness: ~54 nm (90 → 10 % transition)
- IR rejection: < 0.5 % T from 765–810 nm (OD ≥ 1.3)
- AOI: 0° (normal incidence); custom angles available
- Construction: Ion-assisted hard-oxide; 5–450 mm shapes, 0.21–3.8 mm thick
- Custom options: Edge tuning, extended IR blocking range, 45° AOI for beam-steering, rapid prototypes
Learn more
HM-707 Hybrid delivers Passband (visible) 421–691 nm, 85.5–99.3 % T, Cut-off (T50) ≈ 707 nm, and Edge steepness ~54 nm (90 → 10 % transition).
The hard-oxide coating is built for repeated handling, heat, and cleaning.
Best suited for:
Achieve broad visible transparency with a gentle spectral roll-off and targeted mid-infrared blocking.
Description
The HM-707 achieves the highest peak transmission in the KUPO Optics hot mirror catalog-an exceptional 99.3 % at 537 nm. It passes visible light across the entire spectrum from 415 nm to 707 nm (50 % crossover points) with outstanding fidelity: blue reaches 78.8 %, green vaults to 98.3 %, yellow peaks at 98.6 %, and red reaches 95.4 %. This means nearly all incident visible light is delivered to the target, with minimal absorption or scattering losses. The downside is some NIR leakage: NIR(700-850) transmission is 12.7 % and NIR(850-1000) is 11.7 %. For applications prioritizing brightness and light efficiency over absolute IR blocking, HM-707 is unmatched.
Key Advantages
- Peak transmission efficiency - 99.3 % peak transmission at 537 nm is the highest in the hot mirror lineup. Delivers maximum visible light brightness with minimal absorption, critical for light-limited applications.
- Broad visible pass-band - Passes 415-707 nm with blue (78.8 %), green (98.3 %), yellow (98.6 %), and red (95.4 %) all exceeding 78 %, ensuring full-spectrum visible transmission for color-accurate imaging.
- Hard-oxide ion-assisted coating - Advanced durable coating maintains peak transmission over years of operation, thermal cycling, and exposure to high-intensity light sources without efficiency loss.
- High-efficiency brightness delivery - The 99 % transmission efficiency means maximum light energy reaches the target with minimal waste-critical for projectors, displays, and light-efficiency-constrained applications.
- Versatile custom format options - Round, square, free-form blanks from 5 mm to 450 mm diameter, thickness 0.21-3.8 mm, on Borofloat, soda-lime, Schott D263 T, or Corning Eagle XG substrates.
Typical Applications
- High-brightness projection and cinema - The 99.3 % peak transmission enables maximum lumen output for large-venue projection, cinema systems, and high-ambient-light applications where brightness is critical.
- LED and solid-state laser systems - High-efficiency visible transmission maximizes photon delivery from modern LED and laser light sources to imaging optics, extending illumination range and brightness.
- Microscopy and biological imaging - Exceptional green and yellow transmission (98 %) delivers maximum photon flux for fluorescence imaging, confocal microscopy, and photo-sensitive biological specimen analysis.
- Endoscopy and surgical visualization - Near-complete visible transmission ensures maximum visibility for surgical guidance, minimizing image darkening and light loss in confined optical spaces.
- Display and architectural lighting - 99 % efficiency enables bright, vibrant displays and architectural lighting installations with minimal heat generation and maximum light delivery per unit power consumption.
KUPO Optics manufactures HM-707 in fully custom specifications-your choice of diameter, shape, thickness, and substrate-with rapid prototype turnaround and production scaling.
FAQ
HM-707 FAQ
What is HM-707 and what is it used for?
HM-707 is a Exceptional Peak Transmission at 99.3 Percent. The HM-707 achieves the highest peak transmission in the KUPO Optics hot mirror catalog-an exceptional 99.3 % at 537 nm. It passes visible light across the entire spectrum from 415 nm to 707 nm (50 % crossover points) with outstanding fidelity: blue reaches 78.8 %, green vaults to 98.3 %, yellow peaks at 98.6 %, and red reaches 95.4 %. Common uses include High-brightness projection and cinema, LED and solid-state laser systems, Microscopy and biological imaging, and Endoscopy and surgical visualization.
What are the key optical specs of HM-707?
Key published specs for HM-707 include Passband (visible): 421–691 nm, 85.5–99.3 % T; Cut-off (T50): ≈ 707 nm; Edge steepness: ~54 nm (90 → 10 % transition); IR rejection: < 0.5 % T from 765–810 nm (OD ≥ 1.3); AOI: 0° (normal incidence); custom angles available.
What applications is HM-707 best suited for?
HM-707 is commonly used for High-brightness projection and cinema, LED and solid-state laser systems, Microscopy and biological imaging, and Endoscopy and surgical visualization. High-brightness projection and cinema - The 99.3 % peak transmission enables maximum lumen output for large-venue projection, cinema systems, and high-ambient-light applications where brightness is critical.
Can HM-707 be customized for size, substrate, or coating requirements?
KUPO lists the construction for HM-707 as Ion-assisted hard-oxide; 5–450 mm shapes, 0.21–3.8 mm thick. Published custom options include Edge tuning, extended IR blocking range, 45° AOI for beam-steering, rapid prototypes. Versatile custom format options - Round, square, free-form blanks from 5 mm to 450 mm diameter, thickness 0.21-3.8 mm, on Borofloat, soda-lime, Schott D263 T, or Corning Eagle XG substrates.
What should I know about angle of incidence and durability for HM-707?
The published angle of incidence for HM-707 is 0° (normal incidence); custom angles available. The hard-oxide coating is built for repeated handling, heat, and cleaning.
