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RSM35-690F4.0
Rising
Wavelength 3.7-4.8um, focal length range 32-690mm, aperture 4.0 medium-wave cooled continuous zoom infrared optical lens, AR outer coating, suitable for 640x512 medium-wave cooled detectors. Due to the wide range of operating temperatures of handheld devices, the medium-wave cooling continuous zoom lens can be used in the working environment of -40°C~+60°C, and has a wide range of uses.
It provides seamless focal length adjustment from wide-angle to long-range telephoto, enabling users to smoothly transition from broad situational awareness to detailed target recognition within a single system.
This lens integrates athermalization technology to ensure focus stability under changing temperatures, and is built to meet the demanding requirements of defense, security, and industrial professionals.
With its long focal length range, continuous zoom capability, and high optical complexity, it is regarded as a premium, mission-critical infrared imaging lens.
| Product Name | Cooled Continuous Zoom Lens |
| Focal Length | 35-690mm |
| F# | 4.0 |
| Detector | 640X512-15um |
| Wavelength | 3.7-4.8um |
| Circular FOV | 15.62°x12.52°~0.8°x0.64° |
| Focus Type | Motorized Adjustable |
| Image Range | Small field of view: 100m-∞ Large field of view: 2m-∞ |
| Weight | ≤3.8kg |
| Operating Temperature | -40℃~+60℃ |
| External Coating | AR |
Characteristic | Fixed Focal Lens | Dual FOV (DFOV) Lens | Continuous Zoom Lens |
| FOV Flexibility | Fixed. Single, unchangeable perspective | Two fixed perspectives with switchable capability | Continuous, stepless adjustment across its entire range |
Operational Experience | Basic. Requires physical lens change to alter the view | Good. Rapid switching between two modes, but with a disruptive "jump" in the image | Superior. Smooth, seamless transition without losing the target |
Technical Complexity & Design | Low. Simple optical design | Medium. Incorporates a mechanism to switch between two optical paths | Extremely High. Complex optical design with moving groups to maintain performance and focus at all focal lengths |
| Relative Cost | Low | Medium | High |
| Typical Applications | Applications with a single, specific, and unchanging requirement (e.g., a fixed surveillance point) | Systems requiring both "search" (WFOV) and "identification" (NFOV) modes with a limited budget | Demanding dynamic scenarios requiring persistent tracking, fine observation, and superior situational awareness (e.g., military EO/IR systems, advanced security) |
Military & Security: For seamless tracking, reconnaissance, and identification in critical missions using UAVs and electro-optical systems.
Firefighting & Public Safety: For overall situation assessment and detailed rescue operation planning.
Industrial Inspection: For locating anomalies on large-scale equipment and then performing detailed thermal analysis.
Maritime & Aviation: For safe navigation and obstacle avoidance in low-visibility conditions.
Q1: What makes this lens different from fixed-focus lenses?
Unlike fixed lenses, it provides continuous zooming without image jumps, supporting both wide-area observation and long-range detail recognition in one system.
Q2: Does it include athermalization?
Yes. Given its long focal range, athermal design is essential to maintain focus stability across temperature changes.
Q3: Is it suitable for civilian use?
While primarily used in defense and security, it is also applied in public safety, firefighting, and advanced research projects.
Wavelength 3.7-4.8um, focal length range 32-690mm, aperture 4.0 medium-wave cooled continuous zoom infrared optical lens, AR outer coating, suitable for 640x512 medium-wave cooled detectors. Due to the wide range of operating temperatures of handheld devices, the medium-wave cooling continuous zoom lens can be used in the working environment of -40°C~+60°C, and has a wide range of uses.
It provides seamless focal length adjustment from wide-angle to long-range telephoto, enabling users to smoothly transition from broad situational awareness to detailed target recognition within a single system.
This lens integrates athermalization technology to ensure focus stability under changing temperatures, and is built to meet the demanding requirements of defense, security, and industrial professionals.
With its long focal length range, continuous zoom capability, and high optical complexity, it is regarded as a premium, mission-critical infrared imaging lens.
| Product Name | Cooled Continuous Zoom Lens |
| Focal Length | 35-690mm |
| F# | 4.0 |
| Detector | 640X512-15um |
| Wavelength | 3.7-4.8um |
| Circular FOV | 15.62°x12.52°~0.8°x0.64° |
| Focus Type | Motorized Adjustable |
| Image Range | Small field of view: 100m-∞ Large field of view: 2m-∞ |
| Weight | ≤3.8kg |
| Operating Temperature | -40℃~+60℃ |
| External Coating | AR |
Characteristic | Fixed Focal Lens | Dual FOV (DFOV) Lens | Continuous Zoom Lens |
| FOV Flexibility | Fixed. Single, unchangeable perspective | Two fixed perspectives with switchable capability | Continuous, stepless adjustment across its entire range |
Operational Experience | Basic. Requires physical lens change to alter the view | Good. Rapid switching between two modes, but with a disruptive "jump" in the image | Superior. Smooth, seamless transition without losing the target |
Technical Complexity & Design | Low. Simple optical design | Medium. Incorporates a mechanism to switch between two optical paths | Extremely High. Complex optical design with moving groups to maintain performance and focus at all focal lengths |
| Relative Cost | Low | Medium | High |
| Typical Applications | Applications with a single, specific, and unchanging requirement (e.g., a fixed surveillance point) | Systems requiring both "search" (WFOV) and "identification" (NFOV) modes with a limited budget | Demanding dynamic scenarios requiring persistent tracking, fine observation, and superior situational awareness (e.g., military EO/IR systems, advanced security) |
Military & Security: For seamless tracking, reconnaissance, and identification in critical missions using UAVs and electro-optical systems.
Firefighting & Public Safety: For overall situation assessment and detailed rescue operation planning.
Industrial Inspection: For locating anomalies on large-scale equipment and then performing detailed thermal analysis.
Maritime & Aviation: For safe navigation and obstacle avoidance in low-visibility conditions.
Q1: What makes this lens different from fixed-focus lenses?
Unlike fixed lenses, it provides continuous zooming without image jumps, supporting both wide-area observation and long-range detail recognition in one system.
Q2: Does it include athermalization?
Yes. Given its long focal range, athermal design is essential to maintain focus stability across temperature changes.
Q3: Is it suitable for civilian use?
While primarily used in defense and security, it is also applied in public safety, firefighting, and advanced research projects.
