Visible / NIR viewing card: 400-640 nm and 800-1700 nm

a. Dark conditions

• Need to be charged with visible light

• Engraved with two beam collimation cross lines

• The absorption wavelength range is printed on the card

• Dimensions (width x height): 2.10 inches x 3.40 inches

VRC2 is a credit card-sized probe card for viewing light in the wavelength range of 400-640 nm or 800-1700 nm. This durable plastic card is a light-sensitive area on its lower front surface, making it easy to locate visible or near-infrared (NIR) beams and their focal points. Before using the observation card, you need to charge it with visible light. Since the card needs to be charged to emit light, the user must constantly move the position of the incident spot in the photosensitive area to maintain the intensity of the stimulated emission light.

In order to facilitate the use during the alignment process, the detection area of the observation card is extended to the edge, and is engraved with two cross lines for laser collimation. The thickness of the reticle is approximately 0.004 inches, the diameter of the two concentric circles in the middle is approximately 0.063 inches and 0.288 inches, and the horizontal and vertical line lengths are approximately 0.512 inches.