MIL-STD Neutral Density Filter with Optical Density of 0.1 to 4.0

A neutral-density filter, or ND filter, is a filter that reduces or modifies the intensity of all wavelengths, or colors, of light equally, giving no changes in hue of color rendition. The purpose of a standard photographic neutral-density filter is to reduce the amount of light entering the lens. Doing so allows the photographer to select combinations of aperture, exposure time and sensor sensitivity that would otherwise produce overexposed pictures. This is done to achieve effects such as a shallower depth of field or motion blur of a subject in a wider range of situations and atmospheric conditions.

Neutral-density filters are used to control exposure with photographic catadioptric lenses, since the use of a traditional iris diaphragm increases the ratio of the central obstruction found in those systems, leading to poor performance.

HTOE neutral density filter is a kind of filter that utilizes the absorption or emission of light by substances to attenuate light intensity. After passing through a neutral density filter, light from visible to near infrared region attenuates in the same proportion at different wavelengths, which makes the optical elements maintain approximately the same light energy transmission in a wide band. HTOE is a professional manufacturer of neutral density filters. It provides neutral density filters with various wavelengths ranging from near ultraviolet to far infrared.

Applications

• Surveillance system/ CCTV camera
• 3D imaging equipments/ Optical photometer
• Barcode scan instruments

TECH Supports

• Simulation spectrum
• Sample supply
• Material test
• Trial order
• Customize
• 24H service aftersale

Specifications

Spectral Curve

Hi-Tech Optoelectronics Co., Ltd. is a wholly-owned subsidiary of CECEP, is a high-tech enterprise established on the basis of National Optoelectronic Engineering Research Center.

• Established in 1999
• Registered Capital：227 million RMB
• Located in Shahe Industrial Park, Beijing
• Employees：~180
• Products: Semiconductor Lasers

Headquarter in Beijing：

• Over 3000m² of manufacturing space, and more than 1500m² clean room with class 1,000 and 10,000 ；
• The new factory planned with 11,000m², and under construction now.

R&D Platform

• National Optoelectronic Engineering Research Center
• Post-doctoral Research Center
• Engineering Technology Research Institute Optoelectronics Branch of China Energy Conservation Group

More than 30 core patents：

• Ep-Wafer Structure Design
• COMD control
• Electrode process
• Chip process
• Chip packaging
• Beam shaping
• Fiber coupling

Leading provider of laser diodes and laser-based solutions in China.