like is firstly provided as shown in fig8 fig8 a 2 the concavity and convexity 8 representing interference fringe of hologram are die pressed in the information recording portion building area 9 under the effect of hot stamping fig8 b it should be noted that the front substrate 2 having concavity and convexity 8 formed by way of the steps 1 and 2 may be produced by injection molding 3 next the front substrate is roll coated with a solution which is prepared by mixing together 1 g of near infrared absorbing agent nk 2865 produced by nippon kankoh shikiso kemkyusho co ltd 100 g of photosensitive agent r 100 produced by fuji chemicals industrial co ltd and 10 g of 10 solution of ammonium dichoromate until a dried film has a thickness of 2 microns fig8 c 4 next a required mask 30 is placed on the front substrate 2 and it is then exposed to light under the operative condition of 50 mj cm 39 fig8 d 5 next the front substrate 2 is immersed for 60 sec at a temperature of 35 u00b0 c in a liquid of h 2 o so that developing is effected thereafter it is subjected to postbaking in a clean oven at a temperature of 120 u00b0 c for 30 minutes whereby an optical recording pattern layer 11b is formed fig8 e 6 next an aluminum film 11 is formed over the hologram portion building.