GB/T 36265-2018Infrared optical glass (English PDF)

6.2 Infrared Transmittance

Infrared transmittance can be obtained through the test conducted in accordance with GB/T 36403; the average transmittance of required band can be calculated.

6.3 Impurity

Medium-wave infrared optical glass. conduct the test in accordance with impurity test method stipulated in GB/T 7962.8.

Long-wave infrared optical glass. conduct the test in accordance with impurity test method stipulated in GB/T 32561.3

6.4 Degree of Stripe

Medium-wave infrared optical glass. conduct the test in accordance with stripe degree test method stipulated in GB/T 7962.7.

Long-wave infrared optical glass. conduct the test in accordance with stripe degree test method stipulated in GB/T 32561.2.

6.5 Surface Defect

Conduct the inspection with measuring instrument and magnifier (division value <= 0.02 mm).

6.6 Crack

Please refer to Appendix B for the method of testing cracks in infrared optical glass.

6.7 Edge Chip

Conduct the inspection with measuring instrument and magnifier (division value <= 0.02 mm).

6.8 Dimensional Deviation

Deviation of length and diameter. conduct the test with measuring instrument (division value <= 0.1 mm). Randomly select 3 different positions and conduct the test; take the average value of the results.

Deviation of thickness. use measuring instrument (division value <= 0.1 mm) to measure the thickness of two symmetrical dots on the same meridian (5.0 mm from the edge); calculate the deviation of thickness; there shall be at least 4 measuring dots on each model; the maximum value of the thickness deviation shall be taken.

6.9 Resistance to Humidity

7.4 Sampling and Determination

Sampling and determination shall be implemented in accordance with stipulations in Chapter 7 in GB/T 14148-2011.

8.1 Marking

8.1.1 In terms of each batch of products, the certification shall indicate manufacturer's name and address, product standard number, nameplate, specification, quantity, batch number, exit-factory number, inspection data and exit-factory date.

8.1.2 In terms of each batch of products, the packing list shall indicate manufacturer's name and address, product standard number, nameplate, specification and quantity.

8.1.3 The external packaging box shall indicate manufacturer's name, address and trademark, product nameplate, specification, quantity, shipment date, standard number and pictorial marking of packaging shall comply with stipulations in GB/T 191.

8.2 Packaging

Isolation packaging shall be adopted in single piece of product; products shall be tightly placed in the internal packaging box. Packaging box shall be tightly filled up.

8.3 Transportation and Storage

8.3.1 Products shall be stored in dry and ventilated warehouse; keep away from rain and humidity.

8.3.2 During transportation, products shall not be collided or shaken; products shall be handled slightly. […]