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Rod Lens

Rod lenses, also known as relay lenses or image-transfer lenses, serve as the “transmission channel” in endoscopic optical systems. Their core function is to transmit, without loss, the image captured by the objective lens through multiple reflections and deliver it to the eyepiece or camera head for the physician’s observation. Made from premium optical glass and featuring a unique optical design, these lenses ensure that images can be transmitted over long distances without distortion, chromatic aberration, or vignetting. We can provide rod lenses of various sizes (diameter and length), field-of-view angles, and resolution levels according to specific customer requirements.

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Product Description

Rod lenses, also known as relay lenses or image-transfer lenses, serve as the "transmission channel" in endoscopic optical systems. Their core function is to transmit, with minimal loss, the image captured by the objective lens through multiple reflections and deliver it to the eyepiece or camera head for the physician’s observation. Made from premium optical glass and featuring a unique optical design, these lenses ensure that images can be transmitted over long distances without distortion, chromatic aberration, or vignetting. We can provide rod lenses of various sizes (diameter and length), field-of-view angles, and resolution levels according to specific customer requirements.

Product Specification Sheet

Parameter	Standard range
Diameter	Ø 1.0 mm ~ 5.0 mm
Length	Customization
Field of View (FOV)	0° ~ 80°
Resolution	≥ 50 lp/mm at 0.7 MTF
Distortion	< 3%
Color difference	Strict control
Surface accuracy	< λ/4 at 632.8 nm
Stress Birefringence	< 5 nm/cm

Size and Model

Product Model	Product Dimensions (MM)
RL-001	6.55 x 46
RL-002	2.00 × 22.90
RL-003	2.77 × 22.90
RL-004	2.77 × 29.00
RL-005	3.49 × 29.00
RL-006	2.70 x 22.20

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