美国NoIR Laser www.noirlaser.com
NoIR Laser Co., LLC. 成立于1996年,已经成为激光安全防护领域的,其广泛的产品线可以满足各个激光波段的相干和非相干光源。NoIR 提供的产品全部在美国密歇根洲生产制造,并经严格的监控和检测。
美国NoIR Laser公司提供的激光防护眼镜,其采用聚碳酸酯材料。根据不同的激光波段和防护能力,多种型号和款式可供选择。
紫外激光防护眼镜
Model |
Wavelength(波长) |
OD (光密度) |
VLT(可见光透过率) |
ARG |
180-532 nm |
7+ |
48% |
EC2 |
190-398nm |
7+ |
93% |
10600nm |
7+ | ||
EC3 |
190-380nm |
5+ |
90% |
9000-11000nm |
7+ | ||
YLW |
190-450nm |
6+ |
73% |
>450-460nm |
5+ |
可见激光防护眼镜
Model |
Wavelength |
OD |
VLT |
ALX |
190-400 nm |
5+ |
25% |
820-840 nm |
6+ | ||
720-830 nm |
7+ | ||
ARG |
180-532 nm |
7+ |
48% |
AXX |
190-400 nm |
6+ |
33% |
720-810 nm |
7+ | ||
> 810-830 nm |
5+ | ||
BD1 |
190-410 nm |
5+ |
66% |
DBD |
190-534 nm |
7+ |
22% |
790-850 nm |
7+ | ||
> 960-1070 nm |
7+ | ||
765-1090 nm |
5+ | ||
> 850-960 nm |
6+ | ||
DI3 |
190-532 nm |
6+ |
32% |
785-830 nm |
5+ | ||
800-815 nm |
6+ | ||
CYN |
190-435 nm |
5+ |
36% |
730-1085 nm |
5+ | ||
755 nm |
7+ | ||
1064 nm |
7+ | ||
DIW |
190-400 nm |
5+ |
15% |
420 nm |
3.5+ | ||
585-625 nm |
2.5+ | ||
626-715 nm |
3+ | ||
DYE |
190-400 nm |
5+ |
15% |
576-600 nm |
5+ | ||
582-598 nm |
6+ | ||
585-595 nm |
7+ | ||
ELP |
190-425 nm |
5+ |
13% |
514-545 nm |
4+ | ||
532 nm |
6+ | ||
GRY |
190-532 nm |
6+ |
25% |
577 nm |
2.6+ | ||
HNE |
190-400 nm |
5+ |
18% |
625-647 nm |
5+ | ||
630-644 nm |
6+ | ||
RB2 |
190-400 nm |
6+ |
35% |
615-720 nm |
3+ | ||
651-670 nm |
4+ | ||
671-715 nm |
5+ | ||
680-710 nm |
6+ | ||
690-700 nm |
7+ | ||
RB3 |
190-400 nm |
5+ |
56% |
630-665 nm |
1.5+ | ||
680-710 nm |
5+ | ||
685-705 nm |
6+ | ||
RD2 |
190-400 nm |
5+ |
14% |
675-850 nm |
5+ | ||
680-710 nm |
6+ | ||
740-835 nm |
6+ | ||
YLW |
190-450 nm |
6+ |
73% |
>450-460 nm |
5+ | ||
DI4 |
190-400 nm |
5+ |
12% |
633 nm |
5+ | ||
662-835 nm |
5+ | ||
625-850 nm |
4+ | ||
DI6 |
190-400 nm |
5+ |
35% |
670-695 nm |
3+ | ||
815-1050 nm |
3+ | ||
1050-1080 nm |
2+ | ||
ML2 |
190-400 nm |
5+ |
17% |
630-710 nm |
3+ | ||
790-820 nm |
3+ | ||
800-810 nm |
3.5+ | ||
ML3 |
190-400 nm |
5+ |
19% |
630-660 nm |
3+ | ||
800-915 nm |
3+ | ||
780-920 nm |
2+ | ||
ML4 |
190-400 nm |
5+ |
29% |
610-715 nm |
2+ | ||
670-695 nm |
5+ | ||
790-890 nm |
3+ | ||
810-875 nm |
4+ | ||
ML6 |
190-400 nm |
5+ |
13% |
532 nm |
4.2+ | ||
690 nm |
2.8+ | ||
710 nm |
3.2+ | ||
800-810 nm |
4+ | ||
920-1035 nm |
3+ | ||
ML7 |
190-400 nm |
5+ |
13% |
532 nm |
2.5+ | ||
630-655 nm |
1.5+ | ||
795-1070 nm |
3.7+ | ||
810-1064 nm |
4+ | ||
KRR |
190-380 nm |
5+ |
18% |
606-694 nm |
5+ | ||
KRY |
190-580 nm |
5+ |
9% |
KTP |
190-435 nm |
5+ |
34% |
532-535 nm |
5+ | ||
532 nm |
6+ | ||
LIA |
180-400 nm |
5+ |
51% |
730-760 nm |
5+ | ||
750-760 nm |
7+ | ||
TP2 |
655-685 nm |
3+ |
36% |
785-830 nm |
3+ | ||
650-<655 nm |
2+ | ||
>685-690 nm |
2+ | ||
770->785 nm |
2+ | ||
>830-845 nm |
2+ | ||
TRC |
190-400 nm |
6+ |
32% |
7577-579 nm |
5+ | ||
YHD |
190-532 nm |
5.5+ |
10% |
790-820 nm |
3+ | ||
8210-865 nm |
4+ | ||
865-1095 nm |
5+ | ||
1096-1500 nm |
3+ | ||
YPL |
190-390 nm |
6+ |
7% |
560-950 nm |
3+ | ||
8210-865 nm |
1+ | ||
1064 nm |
6+ | ||
1300-1500 nm |
4.5+ | ||
ZS1 |
190-400 nm |
6+ |
34% |
659 nm |
6+ | ||
655-664 nm |
5+ | ||
ZS2 |
190-400 nm |
6+ |
19% |
532 nm |
6+ | ||
561 nm |
6+ |
红外激光防护眼镜
Model |
Wavelength |
OD |
VLT |
CYN |
190-435 nm |
5+ |
36% |
730-1085 nm |
5+ | ||
755 nm |
7+ | ||
1064 nm |
7+ | ||
DBD |
190-534 nm |
7+ |
22% |
790-850 nm |
7+ | ||
>960-1070 nm |
7+ | ||
765-1090 nm |
5+ | ||
>850-960 nm |
6+ | ||
DBY |
190-534 nm |
7+ |
35% |
960-1064 nm |
7+ | ||
925-1070 nm |
6+ | ||
850-925 nm |
5+ | ||
DI1 |
795-820 nm |
4+ |
68% |
DI2 |
180-390 nm |
6+ |
61% |
785-830 nm |
5+ | ||
800-818 nm |
5+ | ||
DI4 |
190-400 nm |
5+ |
12% |
633 nm |
5+ | ||
622-835 nm |
5+ | ||
625-850 nm |
4+ | ||
DI6 |
190-400 nm |
5+ |
35% |
670-695 nm |
3+ | ||
815-1050 nm |
3+ | ||
1050-1080 nm |
2+ | ||
DI8 |
190-400 nm |
5+ |
69% |
800-830 nm |
5+ | ||
805-825 nm |
7+ | ||
DI9 |
190-400 nm |
5+ |
63% |
820-915 nm |
2+ | ||
840-900 nm |
3+ | ||
DLS |
180-400 nm |
6+ |
49% |
785-830 nm |
7+ | ||
DRB |
190-390 nm |
6+ |
61% |
785-830 nm |
5+ | ||
800-818 nm |
6+ | ||
2700-2950 nm |
5+ | ||
DYG |
190-400 nm |
5+ |
11% |
582-585 nm |
5+ | ||
585-600 nm |
6+ | ||
950-1064 nm |
6+ | ||
EC2 |
190-398 nm |
7+ |
93% |
10600 nm |
7+ | ||
EC3 |
190-380 nm |
5+ |
90% |
9000-11000 nm |
7+ | ||
ERB |
190-398 nm |
5+ |
93% |
2940 nm |
6+ | ||
2780 nm |
5+ | ||
10600 nm |
5+ | ||
FG1 |
850-5200 nm |
3+ |
75% |
945-2300 nm |
5+ | ||
2300-2500 nm |
4+ | ||
2800-10600 nm |
5+ | ||
1010-1500 nm |
7+ | ||
FL37 |
550-1100 nm |
1.5+ |
4% |
620-1050 nm |
3+ | ||
550-1100 nm |
5+ | ||
IRD |
180-450 nm |
6+ |
19% |
770-1800 nm |
2+ | ||
820-1720 nm |
5+ | ||
870-1600 nm |
4+ | ||
940-1070 nm |
5+ | ||
IRD2 |
190-400 nm |
5+ |
34% |
850-1720 nm |
2.5+ | ||
IRD5 |
190-480 nm |
6+ |
16% |
800-1790 nm |
5+ | ||
820-950 nm |
6+ | ||
>950-1400 nm |
7+ | ||
>1400-1750 nm |
6+ | ||
ML1 |
190-400 nm |
5+ |
49% |
790-840 nm |
5+ | ||
950-1070 nm |
5+ | ||
800-820 nm |
6+ | ||
970-990 nm |
6+ | ||
ML2 |
190-400 nm |
5+ |
17% |
630-710 nm |
3+ | ||
790-820 nm |
3+ | ||
800-810 nm |
3.5+ | ||
ML3 |
190-400 nm |
5+ |
19% |
630-660 nm |
3+ | ||
800-915 nm |
3+ | ||
780-920 nm |
2+ | ||
ML4 |
190-400 nm |
5+ |
26% |
610-715 nm |
2+ | ||
670-695 nm |
5+ | ||
790-890 nm |
3+ | ||
810-875 nm |
4+ | ||
ML5 |
190-400 nm |
5+ |
23% |
755 nm |
4+ | ||
820-1720 nm |
4+ | ||
900-1100 nm |
5+ | ||
ML6 |
190-400 nm |
5+ |
13% |
532 nm |
4.2+ | ||
690 nm |
2.8+ | ||
710 nm |
3.2+ | ||
800-810 nm |
4+ | ||
920-1035 nm |
3+ | ||
ML7 |
190-400 nm |
5+ |
13% |
532 nm |
2.5+ | ||
630-655 nm |
1.5+ | ||
795-1070 nm |
3.7+ | ||
810-1064 nm |
4+ | ||
TP1 |
780-<800 nm |
2+ |
58% |
>890-920 nm |
2+ | ||
800-890 nm |
3+ | ||
YAD |
180-534 nm |
7+ |
11% |
720-730 nm |
5+ | ||
>730-740 nm |
6+ | ||
>740-1070 nm |
7+ | ||
YDA |
190-400 nm |
5+ |
10% |
532 nm |
1.5+ | ||
770-1085 nm |
5+ | ||
YGA |
190-400 nm |
5+ |
12% |
980-1070 nm |
6+ | ||
YG2 |
180-400 nm |
6+ |
25% |
720-1090 nm |
5+ | ||
750-1064 nm |
7+ | ||
YG3 |
190-534 nm |
7+ |
59% |
850-925 nm |
5+ | ||
925-1070 nm |
6+ | ||
960-1064 nm |
7+ | ||
YGN |
190-400 nm |
5+ |
33% |
532 nm |
3+ | ||
910-1070 nm |
6+ | ||
850-1075 nm |
5+ | ||
808-850 nm |
4+ | ||
YPL |
190-390 nm |
6+ |
7% |
560-950 nm |
1+ | ||
1064 nm |
6+ | ||
1300-1500 nm |
4.5+ | ||
YRB |
190-380 nm |
5+ |
59% |
950-1070 nm |
7+ | ||
808-840 nm |
4+ | ||
>840-950 nm |
5+ | ||
1064 nm |
7+ | ||
2700-2950 nm |
5+ |
1.光密度(OD)
用来表示某特定波长的激光可以通过激光防护眼镜的百分比。
例如:
OD1+:表示10%某特定波长的激光可以透过激光防护眼镜。
同理如下:
OD2+:1%
OD3+:0.1%
OD4+:0.001%
OD5+:0.0001%
OD6+:0.00001%
OD7+:0.000001%
2.可见光透过率(VLT%)
用来表示可见光可以透过激光防护眼镜的百分比。VLT%越高镜片就会越亮,视野也会越清晰。
同时,光密度(OD)会影响透光率的大小。由于我公司激光防护眼镜为吸收式,由生产工艺决定要做到光密度高就要损失一些透光率。如果对光密度的要求低些,就可以提高透光率了,这样视野就会清晰一些。
美国NoIR Laser www.noirlaser.com
NoIR Laser Co., LLC. 成立于1996年,已经成为激光安全防护领域的,其广泛的产品线可以满足各个激光波段的相干和非相干光源。NoIR 提供的产品全部在美国密歇根洲生产制造,并经严格的监控和检测。
美国NoIR Laser公司提供的激光防护眼镜,其采用聚碳酸酯材料。根据不同的激光波段和防护能力,多种型号和款式可供选择。
紫外激光防护眼镜
Model |
Wavelength(波长) |
OD (光密度) |
VLT(可见光透过率) |
ARG |
180-532 nm |
7+ |
48% |
EC2 |
190-398nm |
7+ |
93% |
10600nm |
7+ | ||
EC3 |
190-380nm |
5+ |
90% |
9000-11000nm |
7+ | ||
YLW |
190-450nm |
6+ |
73% |
>450-460nm |
5+ |
可见激光防护眼镜
Model |
Wavelength |
OD |
VLT |
ALX |
190-400 nm |
5+ |
25% |
820-840 nm |
6+ | ||
720-830 nm |
7+ | ||
ARG |
180-532 nm |
7+ |
48% |
AXX |
190-400 nm |
6+ |
33% |
720-810 nm |
7+ | ||
> 810-830 nm |
5+ | ||
BD1 |
190-410 nm |
5+ |
66% |
DBD |
190-534 nm |
7+ |
22% |
790-850 nm |
7+ | ||
> 960-1070 nm |
7+ | ||
765-1090 nm |
5+ | ||
> 850-960 nm |
6+ | ||
DI3 |
190-532 nm |
6+ |
32% |
785-830 nm |
5+ | ||
800-815 nm |
6+ | ||
CYN |
190-435 nm |
5+ |
36% |
730-1085 nm |
5+ | ||
755 nm |
7+ | ||
1064 nm |
7+ | ||
DIW |
190-400 nm |
5+ |
15% |
420 nm |
3.5+ | ||
585-625 nm |
2.5+ | ||
626-715 nm |
3+ | ||
DYE |
190-400 nm |
5+ |
15% |
576-600 nm |
5+ | ||
582-598 nm |
6+ | ||
585-595 nm |
7+ | ||
ELP |
190-425 nm |
5+ |
13% |
514-545 nm |
4+ | ||
532 nm |
6+ | ||
GRY |
190-532 nm |
6+ |
25% |
577 nm |
2.6+ | ||
HNE |
190-400 nm |
5+ |
18% |
625-647 nm |
5+ | ||
630-644 nm |
6+ | ||
RB2 |
190-400 nm |
6+ |
35% |
615-720 nm |
3+ | ||
651-670 nm |
4+ | ||
671-715 nm |
5+ | ||
680-710 nm |
6+ | ||
690-700 nm |
7+ | ||
RB3 |
190-400 nm |
5+ |
56% |
630-665 nm |
1.5+ | ||
680-710 nm |
5+ | ||
685-705 nm |
6+ | ||
RD2 |
190-400 nm |
5+ |
14% |
675-850 nm |
5+ | ||
680-710 nm |
6+ | ||
740-835 nm |
6+ | ||
YLW |
190-450 nm |
6+ |
73% |
>450-460 nm |
5+ | ||
DI4 |
190-400 nm |
5+ |
12% |
633 nm |
5+ | ||
662-835 nm |
5+ | ||
625-850 nm |
4+ | ||
DI6 |
190-400 nm |
5+ |
35% |
670-695 nm |
3+ | ||
815-1050 nm |
3+ | ||
1050-1080 nm |
2+ | ||
ML2 |
190-400 nm |
5+ |
17% |
630-710 nm |
3+ | ||
790-820 nm |
3+ | ||
800-810 nm |
3.5+ | ||
ML3 |
190-400 nm |
5+ |
19% |
630-660 nm |
3+ | ||
800-915 nm |
3+ | ||
780-920 nm |
2+ | ||
ML4 |
190-400 nm |
5+ |
29% |
610-715 nm |
2+ | ||
670-695 nm |
5+ | ||
790-890 nm |
3+ | ||
810-875 nm |
4+ | ||
ML6 |
190-400 nm |
5+ |
13% |
532 nm |
4.2+ | ||
690 nm |
2.8+ | ||
710 nm |
3.2+ | ||
800-810 nm |
4+ | ||
920-1035 nm |
3+ | ||
ML7 |
190-400 nm |
5+ |
13% |
532 nm |
2.5+ | ||
630-655 nm |
1.5+ | ||
795-1070 nm |
3.7+ | ||
810-1064 nm |
4+ | ||
KRR |
190-380 nm |
5+ |
18% |
606-694 nm |
5+ | ||
KRY |
190-580 nm |
5+ |
9% |
KTP |
190-435 nm |
5+ |
34% |
532-535 nm |
5+ | ||
532 nm |
6+ | ||
LIA |
180-400 nm |
5+ |
51% |
730-760 nm |
5+ | ||
750-760 nm |
7+ | ||
TP2 |
655-685 nm |
3+ |
36% |
785-830 nm |
3+ | ||
650-<655 nm |
2+ | ||
>685-690 nm |
2+ | ||
770->785 nm |
2+ | ||
>830-845 nm |
2+ | ||
TRC |
190-400 nm |
6+ |
32% |
7577-579 nm |
5+ | ||
YHD |
190-532 nm |
5.5+ |
10% |
790-820 nm |
3+ | ||
8210-865 nm |
4+ | ||
865-1095 nm |
5+ | ||
1096-1500 nm |
3+ | ||
YPL |
190-390 nm |
6+ |
7% |
560-950 nm |
3+ | ||
8210-865 nm |
1+ | ||
1064 nm |
6+ | ||
1300-1500 nm |
4.5+ | ||
ZS1 |
190-400 nm |
6+ |
34% |
659 nm |
6+ | ||
655-664 nm |
5+ | ||
ZS2 |
190-400 nm |
6+ |
19% |
532 nm |
6+ | ||
561 nm |
6+ |
红外激光防护眼镜
Model |
Wavelength |
OD |
VLT |
CYN |
190-435 nm |
5+ |
36% |
730-1085 nm |
5+ | ||
755 nm |
7+ | ||
1064 nm |
7+ | ||
DBD |
190-534 nm |
7+ |
22% |
790-850 nm |
7+ | ||
>960-1070 nm |
7+ | ||
765-1090 nm |
5+ | ||
>850-960 nm |
6+ | ||
DBY |
190-534 nm |
7+ |
35% |
960-1064 nm |
7+ | ||
925-1070 nm |
6+ | ||
850-925 nm |
5+ | ||
DI1 |
795-820 nm |
4+ |
68% |
DI2 |
180-390 nm |
6+ |
61% |
785-830 nm |
5+ | ||
800-818 nm |
5+ | ||
DI4 |
190-400 nm |
5+ |
12% |
633 nm |
5+ | ||
622-835 nm |
5+ | ||
625-850 nm |
4+ | ||
DI6 |
190-400 nm |
5+ |
35% |
670-695 nm |
3+ | ||
815-1050 nm |
3+ | ||
1050-1080 nm |
2+ | ||
DI8 |
190-400 nm |
5+ |
69% |
800-830 nm |
5+ | ||
805-825 nm |
7+ | ||
DI9 |
190-400 nm |
5+ |
63% |
820-915 nm |
2+ | ||
840-900 nm |
3+ | ||
DLS |
180-400 nm |
6+ |
49% |
785-830 nm |
7+ | ||
DRB |
190-390 nm |
6+ |
61% |
785-830 nm |
5+ | ||
800-818 nm |
6+ | ||
2700-2950 nm |
5+ | ||
DYG |
190-400 nm |
5+ |
11% |
582-585 nm |
5+ | ||
585-600 nm |
6+ | ||
950-1064 nm |
6+ | ||
EC2 |
190-398 nm |
7+ |
93% |
10600 nm |
7+ | ||
EC3 |
190-380 nm |
5+ |
90% |
9000-11000 nm |
7+ | ||
ERB |
190-398 nm |
5+ |
93% |
2940 nm |
6+ | ||
2780 nm |
5+ | ||
10600 nm |
5+ | ||
FG1 |
850-5200 nm |
3+ |
75% |
945-2300 nm |
5+ | ||
2300-2500 nm |
4+ | ||
2800-10600 nm |
5+ | ||
1010-1500 nm |
7+ | ||
FL37 |
550-1100 nm |
1.5+ |
4% |
620-1050 nm |
3+ | ||
550-1100 nm |
5+ | ||
IRD |
180-450 nm |
6+ |
19% |
770-1800 nm |
2+ | ||
820-1720 nm |
5+ | ||
870-1600 nm |
4+ | ||
940-1070 nm |
5+ | ||
IRD2 |
190-400 nm |
5+ |
34% |
850-1720 nm |
2.5+ | ||
IRD5 |
190-480 nm |
6+ |
16% |
800-1790 nm |
5+ | ||
820-950 nm |
6+ | ||
>950-1400 nm |
7+ | ||
>1400-1750 nm |
6+ | ||
ML1 |
190-400 nm |
5+ |
49% |
790-840 nm |
5+ | ||
950-1070 nm |
5+ | ||
800-820 nm |
6+ | ||
970-990 nm |
6+ | ||
ML2 |
190-400 nm |
5+ |
17% |
630-710 nm |
3+ | ||
790-820 nm |
3+ | ||
800-810 nm |
3.5+ | ||
ML3 |
190-400 nm |
5+ |
19% |
630-660 nm |
3+ | ||
800-915 nm |
3+ | ||
780-920 nm |
2+ | ||
ML4 |
190-400 nm |
5+ |
26% |
610-715 nm |
2+ | ||
670-695 nm |
5+ | ||
790-890 nm |
3+ | ||
810-875 nm |
4+ | ||
ML5 |
190-400 nm |
5+ |
23% |
755 nm |
4+ | ||
820-1720 nm |
4+ | ||
900-1100 nm |
5+ | ||
ML6 |
190-400 nm |
5+ |
13% |
532 nm |
4.2+ | ||
690 nm |
2.8+ | ||
710 nm |
3.2+ | ||
800-810 nm |
4+ | ||
920-1035 nm |
3+ | ||
ML7 |
190-400 nm |
5+ |
13% |
532 nm |
2.5+ | ||
630-655 nm |
1.5+ | ||
795-1070 nm |
3.7+ | ||
810-1064 nm |
4+ | ||
TP1 |
780-<800 nm |
2+ |
58% |
>890-920 nm |
2+ | ||
800-890 nm |
3+ | ||
YAD |
180-534 nm |
7+ |
11% |
720-730 nm |
5+ | ||
>730-740 nm |
6+ | ||
>740-1070 nm |
7+ | ||
YDA |
190-400 nm |
5+ |
10% |
532 nm |
1.5+ | ||
770-1085 nm |
5+ | ||
YGA |
190-400 nm |
5+ |
12% |
980-1070 nm |
6+ | ||
YG2 |
180-400 nm |
6+ |
25% |
720-1090 nm |
5+ | ||
750-1064 nm |
7+ | ||
YG3 |
190-534 nm |
7+ |
59% |
850-925 nm |
5+ | ||
925-1070 nm |
6+ | ||
960-1064 nm |
7+ | ||
YGN |
190-400 nm |
5+ |
33% |
532 nm |
3+ | ||
910-1070 nm |
6+ | ||
850-1075 nm |
5+ | ||
808-850 nm |
4+ | ||
YPL |
190-390 nm |
6+ |
7% |
560-950 nm |
1+ | ||
1064 nm |
6+ | ||
1300-1500 nm |
4.5+ | ||
YRB |
190-380 nm |
5+ |
59% |
950-1070 nm |
7+ | ||
808-840 nm |
4+ | ||
>840-950 nm |
5+ | ||
1064 nm |
7+ | ||
2700-2950 nm |
5+ |
1.光密度(OD)
用来表示某特定波长的激光可以通过激光防护眼镜的百分比。
例如:
OD1+:表示10%某特定波长的激光可以透过激光防护眼镜。
同理如下:
OD2+:1%
OD3+:0.1%
OD4+:0.001%
OD5+:0.0001%
OD6+:0.00001%
OD7+:0.000001%
2.可见光透过率(VLT%)
用来表示可见光可以透过激光防护眼镜的百分比。VLT%越高镜片就会越亮,视野也会越清晰。
同时,光密度(OD)会影响透光率的大小。由于我公司激光防护眼镜为吸收式,由生产工艺决定要做到光密度高就要损失一些透光率。如果对光密度的要求低些,就可以提高透光率了,这样视野就会清晰一些。